Archive for the ‘Sinharaja’ Category
Citizen Science Beginnings in a Sinharaja Restoration Plot
OSC students working under the guidance of Professor Nimal Gunatilleke, Dr. Suranjan Fernando and their teachers collect data on restoration and forest dynamics in a restored stretch of Sinharaja’s boundary forest planted with the non-native Pinus caribaea timber trees.
Sri Lanka’s ethereal Sinharaja rain forest, now more broadly understood as the Sinharaja Adiviya, has been a vital South Asian conservation success story, a magnet for ecotourists and a key location for the study of tropical rainforest dynamics. In recent years efforts to restore boundary areas that were earlier converted to non-native plantations have produced remarkable success. Last December I worked with Professor Nimal Gunatilleke and Dr. Suranjan Fernando to organize an effort to conduct citizen science with students from the Overseas School of Colombo. Our goal was to participate in the monitoring of the forest dynamics in restoration plots near the Kudawa entrance. The effort, although modest in scope, was designed to germinate and trial methods that could then be replicated by other groups of school students and interested citizens in the Sinharaja Adiviya.
Screenshot of the iNaturalist Sinharaja Biodiversity Observatory set up by the author for visiting student groups.
Sinharaja Adiviya boundary as seen in the Sinharaja Biodiversity Observatory page of the iNaturalist app.
Citizen Science in the International Baccalaureate Context
The Group IV project is an interdisciplinary project-based learning exercise that is a requirement for all Diploma (DP) science students to complete. Schools develop Group IV programs that allow candidates from the traditional science classes (Biology, Chemistry & Physics) to collaborate across disciplines to address a broad thematic question. At OSC, the interdisciplinary Environmental Systems and Societies (ES&S) class participates in this process (though it has not been a requirement). When the topic involves ecology and field work, ES&S students are expected to play a lead role. In past years OSC Group IV projects have focused on themes of tea, energy generation, urban wetlands and the OSC campus as a system. Group IV work is not formally assessed but students are required to participate and demonstrate collaboration that is evidenced in a final reflection. Thus, the focus is very much on the process rather than the product.
In the 2023-24 school year, the science department made several changes to how we conduct the Group IV project. We moved it into the traditional DP1 science field trip slot rather than have it at the end of the academic year. Secondly, we made a conscious move to design a program around Citizen Science in a way that the students would contribute to something more than an IB Diploma requirement. By good fortune, I was in touch with Professor Nimal Gunatilleke at the beginning of the school year and he was interested in getting students into the Sinharaja restoration plots to help monitor the forest dynamics and how contrasting areas were recovering. The proposed idea had a clear ecological focus but my colleagues in the department liked the idea of us all working to collect and contribute data to the effort.
SETTING THE SINHARAJA RESTORATION CONTEXT
The restoration plots that our group worked in are part of an important experiment in ecological restoration in “ever-wet” Mixed Dipterocarp Forest (MDF) that Professor Nimal Gunatilleke has been the key leader of. The plots are set in plantations of non-native Pinus caribaea that were planted on Sinharaja’s’ boundary 3-4 decades ago. Today there are still vast areas of non-native timber plantations that are awaiting restoration and the Sinharaja study was designed to test and model appropriate restoration methods. Around two decades ago key manager realized that the plantations were not producing the results originally envisioned and they (at least, initially) did not do much to support the area’s rich biodiversity. The restoration project involved thinning (rather than clear-cutting) plantations in strips and then planting key rainforest species that were appropriate from an ecological succession point-of-view. Experiments were conducted in different widths of strips (1-3 rows of pines removed) and manipulation (either no manipulation or some amount of it). Pioneer, rather than climax, species were initially planted as they would be more tolerant of the abiotic conditions in the cut strips (more light, less humidity etc.). These included “site generalist” and “restricted native” and “naturalized species of utility value.” The Pinus plantations are located in Sinharaja’s buffer zone where controlled extraction and harvests are permitted. The plants with economic value were specially designed to help get buy-in from neighboring residents.
The detailed story of the Sinharaja restoration plots has been recently published in a chapter of the book Ecological Restoration: Moving Forward Using Lessons Learned. See “Ecological Approaches to Forest Restoration: Lessons Learned from Tropical Wet Asia.” I created the maps for the Western Ghats and Sri Lankan case studies in this book but they are rather small in the final draft. I also highlight the key lessons in my October 2023 restoration article for Sanctuary Asia.
Sinharaja Adiviya restoration site map from the book Ecological Restoration: Moving Forward Using Lessons Learned (2023).
Professor Nimal Gunatilleke orients OSC students and teachers to the Sinharaja area and restoration site on the north-western Kudawa boundary.
GROUP IV FIELDWORK
We had a relatively large group including 35 DP1 students and five faculty members. Because of our size, we were spread between two different guest houses (Martin’s & the Blue Magpie Lodge). We spent our first afternoon getting oriented and doing a trial plot in the secondary forest near the REEC Center above Martin’s. Professor Gunatilleke and Dr. Suranjan led this and it was good to see the kids getting the hang of the steps despite some hungry leeches. The method of examining trees with a GBH of <1cm and between 1 and 5 cm GBH was challenging for our students to grasp but they put in a good effort. We had the Sinharaja guides working with each of our eight groups and they played a key role in identifying what was being recorded. The data was recorded on paper and also on the Survey 123 app that I had set up in Colombo based on the parameters established by our mentors.
A simplified flow diagram showing some of the key steps of the 2023 Group IV project in Sinharaja.
On our full day of data collection, we gathered the team at Martin’s and then hiked down to the restoration site. I’ve been walking by this site for many years and have been amazed and how it has changed such that it looks more like a rainforest than a plantation now (see attached historic pictures from earlier OSC studies). Nimal did a site briefing and then he and Suranjan assigned the groups to plots on the slop below the track leading to Martin’s from Kudawa village. Faculty members spread out with the groups, and we also got to work. Mechum Purnell, our secondary principal, moved between groups providing the lux readings using a Vernier probe. Science HOD, Robert LeBlanc ensured that the Chemistry aspects were being conducted properly (we measured nitrates and pH). Mohamed Haji, our new biology, teacher and I monitored several groups. Melinda Tondeur was on the road organizing a surprise birthday cake as a break after the second round of data had been collected. Tyler Echols ran back and forth to Martin’s to make sure that we had everything that was needed for the study. Each plot took about 30 minutes to study and the groups got better as they gathered more data. Unfortunately, we had to cut our day of fieldwork short when the skies opened up and it got wetter than our students were prepared for.
Notable plant species (and bracket fungi) from our time in Sinharaja.
Measuring canopy cover was an important part of the restoration study. We used the Canopeo app to get a quantitative assessment of the percentage cover of our plots. This image is taken on the old logging road leading to the research center.
WRAPPING UP
The rest of our time in Sinharaja was spent in class groups. The ES&S class spent quality time with Nimal and Savitri and got a personalized lecture on the story of Sinharaja and the efforts to restore the rainforest after the logging destruction of the 19760s and 70s. As per tradition, I planned a visit to Moulawella on our last morning. This short but physically challenging hike rewards you with a broad view over Sinharaja and the Kudawa area. I think that it is important for students to see the view, take in the grandeur and appreciate the work of past generations who worked so hard to protect this vital rainforest from destruction in the name of economic development.
Professor Gunatilleke gave a rich, illustrated presentation for the DP ES&S students and teachers in which he discussed Sinharaja’s history, its struggle for protection and subsequent years of being a site of key ecological studies.
The data that we gathered is satisfactory but it is clear that we need to do more training and preparation before the next field study. Using Survey 123 worked really well and we have all the raw data on an online database that can be shared. Working with the Sinharaja guides to identify the plants was crucial. Most students are not botanically inclined and switching gears to think about leaves, stems, GBH and plant diversity is challenging for them. Most of our students did not let that hold them back and willingly learned from our mentors and the Sinharaja guides. The ESS& students made a good attempt to record the biodiversity they saw and load it up onto iNaturalist (you can see their submissions under the Sinharaja Biodiversity Observatory). We are now looking forward to coming back later this year to continue the restoration studies in Sinharaja with the next cohort of OSC science students.
REFERENCES
Ashton, Mark et al. “Restoration pathways for rain forest in southwest Sri Lanka: A review of concepts and models.” Forest Ecology and Management 154(3):409-430. December 2001. Web.
Ashton, Mark et al. “Restoration of rain forest beneath pine plantations: A relay floristic model with special application to tropical South Asia.” Forest Ecology and Management 329:351–359. October 2014. Web.
Ashton, Peter and David Lee. Trees & Forest of Tropical Asia: Exploring Tapovan. Chicago: Chicago University Press, 2022. Print.
Ecosystem Conservation and Management Project ESCAMP. Sinharaja Forest Range Landscape Management Plan 2022. Colombo: Sri Lanka Forest Department, 2022. Print.
Florentine, Singarayer et al Ed. Ecological Restoration: Moving Forward Using Lessons Learned. Springer, 2023. Print & Web. See “Ecological Approaches to Forest Restoration: Lessons Learned from Tropical Wet Asia” for the article edited by Nimal Gunatilleke. It includes key case studies from Sinharaja, the Knuckles and the Anamalais.
Gunatilleke, C.V.S, et al. Ecology of Sinharaja Rain Forest and the Forest Dynamics Plot in Sri Lanka’s Natural World Heritage Site. Colombo: WHT Publications, 2004. Print.
Gunatilleke, C.V.S. WNPS Monthly Lecture: Saving Sinharaja. 11 December 2022. YouTube Video.
Harlin, John et al. “Turning students into citizen scientists.” Citizen Science. October 2018. Print & Web via ResearchGate.
Lockwood, Ian. “Preliminary Analysis of Land Cover in the Sinharaja Adiviya using Planet Dove Imagery.” Ian Lockwood Blog. September 2019. Web.
Lockwood, Ian. “Rewilding What Has Always Been Wild: Sri Lankan Restoration Stories” Sanctuary Asia. October 2024. Web.
Pethiyagoda, Rohan and Hiranya Sudhasinghe. The ecology and biogeography of Sri Lanka: a context for freshwater fishes. WHT Publications, 2021. Print & Web.
“Restoring a rainforest: The WNPS effort with Diyakothakanda.” Sunday Times. 2 June 2021. Web.
“Report on visit to Diyakothakanda Forest Restoration Site on 16 April 2018.” WNPS Roar: Ecological Restoration.” 2018. Web.
Sinharaja Biodiversity Observatory. iNaturalist Project. Web.
From Reef to Rainforest Part 2 (Sinharaja)
OSC’s annual Geography IA field study combines face-to-face interviews in the Kudawa area with biodiversity encounters in and around Sinharaja’s rainforest. Students worked in small teams to interview a broad range of respondents and learn about their home gardens, and lives in a challenging economic situation. The emblematic Sri Lanka Blue Magie (Urocissa ornata) is a species that we saw at our guest house (Martin’s Jungle Lodge) and heard on the edges of the forest boundary during the course of the fieldwork.
Within a week of returning from the Maldives (see previous post) I was in the field again-this time in the northwestern edges of Sri Lanka’s Sinharaja rainforest. This was the 19th OSC group that I have brought here (not including DofE teams). Villagers and Forest Department officials protecting the World Heritage Site are familiar with OSC groups and our studies are based on these relationships. Four of the students who had been on the Maldives field study were also in the Geography class, so the five of us were really immersed in field-based experiential education in May! Our goal was to conduct a household survey that would help students write individual internal assessment reports. This year’s cohort included six students with the support of three adults. Desline Attanayake was back again providing key logistical support and helping the students to make bridges with the community. Our friend Sushma Sen, a former KIS & Woodstock teacher who has been working in the OSC math department for the last two years, joined us. This year’s field study was characterized by solid data collection (we ended up with 58 complete surveys), relatively good weather (with almost no rain during the days) and rich encounters with a variety of people and rainforest creatures.
Portraits from Kudawa (clockwise from upper left): Desline and Mali on the trail to the Sinharaja research center, the artist Iresha and her husband at Kudawa bridge, guide Ranjit sporting a new Sinahraja t-shirt, Sushma going to see Sri Lanka frogmouths, the author and the six Class of 2024 students, Inoka the granddaughter-in-law of Martin Wijesinghe, Indramanaya cooking up (exceedingly delicious) pol-rotis on a granite slab, owner at the spurfowl home at Katala Patala. Bottom: A classic home garden scene with a traditional adobe house (the owners have moved into a cement block home while keeping the older structure intact).
Setting the Course
I usually try to visit Sinharaja and stay at Martin’s once or twice in the months preceding our Geography field study. This year I went in February and was accompanied by several friends including Nirosha, Rumeth & Priyanath. This spring trip was more personal and allowed me to focus on getting pictures of birds, amphibians and other species. It is also a time when migrants are sound and there is potential to see and photograph rarities. Many of the species from this post were photographed on that visit. It was surprisingly wetter in February than May-the complete opposite of what you would normally expect.
Sinharaja amphibians and butterflies (taken in February). From top: Long-snouted tree frog (Taruga longinasus), Purple Mormon (Papilio polymnestor), Ceylon tree nymph (Idea iasonia) Hallow snouted shrub frog (Pseudophilautus cavirostris)
Common Survey Analysis & Findings (thus far)
My approach to gathering sufficient quantitative data for the Geography IA continues to involve using a common survey with a variety of questions that help each student answer their own fieldwork (research) question. We now have a pool of standard questions that stay the same every year -this allows longitudinal analysis. Students then add their own questions focusing on themes of energy, overall wealth, education, health and resources. There were significant findings from the 2023 survey. Firstly, students gained an appreciation for the hard work and challenges of running a home garden in Sri Lanka. Secondly, we saw that there had been a spike in electricity costs mirroring national trends. Tourism to Sinharaja is still recovering and visitor numbers are not yet back to pre-pandemic levels. Further analysis is underway as the students crunch the numbers over the summer. They will hand in rough drafts that I give feedback on before the final IA is submitted in October.
Examples of the home gardens near Kudawa. Virtually every plant in the garden serves some useful purpose that helps farmers be close to self-sufficiency in terms of food needs.
Home gardens are small private holdings where families practice a combination of subsistence and (small-scale) commercial agriculture. The home of Kudawa almost all depend on tea, grown on relatively small plots (1 -2 acres). Families are versatile and creative with other crops that they grow (manioc, banana, cinnamon, papaya, coconut etc.). Self-sufficiency in a time of economic challenge is a benefit but home gardens struggle to stay out of poverty. The 2019 import ban on key inputs (fertilizers and pesticides) greatly affected yields- something that our results showed. Several families now have one or two members that work as Forest Department employees or as private guides. This collage shows a work shed of a home garden near Katala Patala.
VIDEO INTERVIEWS
Map from ESRi’s Survey 123 showing responses from the IA survey on electricity usage in 2023.
MAP OF 2023 WALKS
https://www.google.com/maps/d/u/0/edit?mid=1Lu6WJfXJlcK8_gNKtjcFds06YvhLYNg&usp=sharing
2023 OSC Geography class with their teachers, Chandralatha, her sister & Chamara the guide at Martin’s Lodge.
PAST BLOG POSTS ON SINHARAJA IA
Geography IA Trip 2021 (Cancelled because of COVID)
SELECTED REFERENCES
De Silva, Anslem and Kanishka Ukuwela & Dilan Chathuranga. A Photographic Guide to the Amphibians of Sri Lanka. Oxford: John Beaufoy Publishing, 2021. Print.
DeZoysa, Neela and Rhyana Raheem. Sinharaja: A Rainforest in Sri Lanka. Colombo: March for Conservation, 1990. Print.
Geiger, Klaus. “Characterizing the traditional tree-garden systems of southwest Sri Lanka.” Tropical Resources (Yale School of the Environment Tropical Resources Institue). 2014. Web.
Gunatilleke, C.V.S, et al. Ecology of Sinharaja Rain Forest and the Forest Dynamics Plot in Sri Lanka’s Natural World Heritage Site. Colombo: WHT Publications, 2004. Print.
Humke, Matthew. Tourism Assessment Report: Sinharaja Forest Reserve Complex. Colombo: Ecosystem Conservation and Management Project (ESCAMP).July 2018. Web. Kotagama, Sarath W and Eben Goodale. “The composition and spatial organization of mixed-species flocks in a Sri Lankan rainforest.” Forktail. 2004. Print & Web.
Liyanage, L. P. K. et al. “Assessment of Tourist and Community Perception with Regard to Tourism Sustainability Indicators: A Case Study of Sinharaja World Heritage Rainforest, Sri Lanka.” World Academy of Science, Engineering and Technology International Journal of Social and Business Sciences. Vol 12 No. 7. 2018. Web.
Lockwood, Ian. “Into the Wet: Field Notes From Sri Lanka’s Wet Zone.” Sanctuary Asia. August/September 2007. 3-11. Print. PDF.
Lockwood, Ian. “Montane Biodiversity in the Land of Serendipity.” Sanctuary Asia. July 2010. Print.
Lockwood, Ian. “Sinharaja: The Heart of South Asian Biodiversity.” Sanctuary Asia. April 2020. PDF
Singhalage Darshani, Nadeera Weerasinghe and Gehan de Silva Wijeratne. A Naturalist’s Guide to the Flowers of Sri Lanka. Colombo: Vijitha Yapa Publications, 2018. Print.
Sinharaja Forest Reserve: 2020 Conservation Outlook Assessment. IUCN. Web.
Sri Lanka Survey Department. Sheets 80_x & 81_x (1:10,000) 2nd Edition. Colombo: 2017. Maps & Spatial Data.
Warakagoda. Deepal et. al. Birds of Sri Lanka (Helm Field Guides). London: Helms Guides, 2012. Print.
Wijeyeratne, Gehan de Silva. Sri Lankan Wildlife (Bradt Guides). Bucks, England: Bradt Travel Ltd. 2007. Print.
Vigallon, S. The Sinharaja Guidebook for Eco-Tourists. Colombo: Stamford Lake Publications, 2007. Print.
Defying the Odds (again ) in Sinharaja
OSC’s annual DP Geography field study in Sinharaja investigates patterns of land use, home garden agriculture and the impact of tourism in the shadow of a critical Sri Lankan protected area.
In the DP geography class, current patterns and cases studies play a vital role in helping students understand broad concepts such as power, change, globalization and economic development. The ongoing political and economic crisis in Sri Lanka has been an unfortunately clear case study that provides multiple teachable moments. During recent field work students from OSC’s Class of 2023 witnessed these issues in real life, as seen in surveys of a rural settlement near Sinharaja rainforest.
At the end of April OSC’s IB DP2 Geography class spent four days conducting field research in village areas next to Sinharaja rainforest. This UNESCO-designated World Heritage site located the south-western “wet zone” of the country is well known for its rich biodiversity. OSC classes have been conducting field work in Sinharaja since 2005 and we have established a positive relationship with the community. The location offers ideal conditions for student learning, inquiry and field work on socio-economic, tourist and land-use themes. As usual, we were privileged to stay at Martin’s Wijesinghe’s Jungle Lodge. He sadly passed away last November but his daughters are continuing to provide a fine, basic guest house for people interested in learning about the area.
Kudawa fieldwork and SInharaja explorations are accomplished on foot in a variety of settings.
The Class of 2023 geography class is composed of seven young men and women from six different countries. The class embraced the learning opportunities, didn’t complain about the leeches and seemed to relish the village meals and local vegetables. Thevuni and Thisathma, as Sinhala speaking individuals, played a key role. The other team members including Huirong, Josh, Lucca Sam and Sara all played important supporting roles. OSC’s logistic coordinator Desline Attanayake provided support in the interviews and took part in all aspects of the study. We hired three Sinharaja guides each day and they were essential in leading us through home gardens and helping the students to get a better understanding of the area. The surveys were gathered on foot in rain or shine. We also interacted with two different groups of university professors and students that were in Sinharaja at the same time. It was intriguing to learn about their studies and see how others conduct academic research in this unique rainforest ecosystem.
OSC’s DP Geography students conducting field work in the Kudawa village area in April 2022. Each of the students had an individual research question that could be answered through a face-to-face survey. Their questions were combined into a common 50 question survey that was loaded onto the Survey 123 app. Responses were also collected on paper as a backup. Over the course of two full days of house to house visits 48 responses were collected in the Kudawa area.
Each of the students explored an individual geographic research question but pooled all of their sub-questions into a single survey that small groups could run. The survey of 50 questions could take up to 20-30 minutes with introductions and a look around their properties. The respondents were gracious with their time and several teams were invited to have refreshments. With three different teams going in different directions we collected 48 different interviews. Responses were collected using Survey 123 a GIS-enabled data gathering app that all the students could run off their phones (we also recorded every response on paper). This allows students to map their results and do basic spatial analysis on the findings using ArcGIS, the GIS software package that they are learning to operate.
It’s amazing how much you can see on a relatively short visits to Sinharaja. This collage features amphibians and reptiles from the IA trip that were photographed while on our walks or in the evening near Martin’s.
Sri Lanka Green Pit Viper (Trimeresurus trigonocephalus) that we found on a night walk looking for frogs. It was not as docile as the individual that we had seen during the day.
Long-snout(ed) Tree Frogs (Taruga longinasus) photographed in Sinharaja during the IA visit. Female on the left and two different males in the center and right. This is an endemic species closely associated with the lowland rainforest in Sri Lanka’s wet zone. I hear it every time I visit Sinharaja but they are usually in the canopy and are tricky to find. On this trip with my geography students pre-monsoon showers had dampened conditions and a few were at eye level. I’ve posted images of the other two Taruga sp. in earlier posts.
In addition to conducting the surveys, students got a flavor of being ecotourists in a tropical forest. They walked the different forest trails, encountered birds, snakes and spiders, and soaked their feet in jungle streams. Just before returning to Colombo on Saturday we hiked up Moulawella peak to take in the full extent of Sinharaja. It was a challenging adventure but all members of the team made it up and down safely. The sky was exceptionally clear and we could see the Indian Ocean in the south and east and Sri Pada in the north. It helped round off an exhilarating adventure in geographic learning. The students are now working on processing their data and writing up their IA reports.
On our last day the class and I did the traditional Moulawella hike before heading back to Colombo. It a short but tough climb up through secondary and then primary forest to the ride and peak with its panoramic view over the western part of Sinharaja rainforest. The experience gives hikers a sense and appreciation of Sinharaja and its conservation value. We were blessed with clear weather such that we could see the seas in the south and Sri Pada looking to the north.
Moulawella south panoramic view (April 2022)-a view that I was eager to share with Professors Nimal & Savitri Gunatilleke.
Here is a new way of looking at the same image-through a Panoramic viewer.
OSC’s Class of 2023 IBDP Geography class- continuing a tradition of learning about the rainforest and its hinterlands through the support of Martin Wijesinghe’s family.
PAST BLOG POSTS ON SINHARAJA IA
Geography IA Trip 2021 (Cancelled because of COVID)
SELECTED REFERENCES
De Silva, Anslem and Kanishka Ukuwela. A Naturalist’s Guide to the Reptiles of Sri Lanka. Colombo: Vijitha Yapa Publishing, 2017. Print.
De Silva, Anslem and Kanishka Ukuwela & Dilan Chathuranga. A Photographic Guide to the Amphibians of Sri Lanka. Oxford: John Beaufoy Publishing, 2021. Print.
DeZoysa, Neela and Rhyana Raheem. Sinharaja: A Rainforest in Sri Lanka. Colombo: March for Conservation, 1990. Print.
Gunatilleke, C.V.S, et al. Ecology of Sinharaja Rain Forest and the Forest Dynamics Plot in Sri Lanka’s Natural World Heritage Site.Colombo: WHT Publications, 2004. Print.
Kotagama, Sarath W and Eben Goodale. “The composition and spatial organization of mixed-species flocks in a Sri Lankan rainforest.” Forktail. 2004. Print & Web.
Liyanage, L. P. K. et al. “Assessment of Tourist and Community Perception with Regard to Tourism Sustainability Indicators: A Case Study of Sinharaja World Heritage Rainforest, Sri Lanka.” World Academy of Science, Engineering and Technology International Journal of Social and Business Sciences. Vol 12 No. 7. 2018. Web.
Lockwood, Ian. “Into the Wet: Field Notes From Sri Lanka’s Wet Zone.” Sanctuary Asia. August/September 2007. 3-11. Print. PDF.
Lockwood, Ian. “Montane Biodiversity in the Land of Serendipity.” Sanctuary Asia. July 2010. Print.
Lockwood, Ian. “Sinharaja: The Heart of South Asian Biodiversity.” Sanctuary Asia. April 2020. PDF
Singhalage Darshani, Nadeera Weerasinghe and Gehan de Silva Wijeratne. A Naturalist’s Guide to the Flowers of Sri Lanka. Colombo: Vijitha Yapa Publications, 2018. Print.
Sri Lanka Survey Department. Sheets 80_x & 81_x (1:10,000) 2nd Edition. Colombo: 2017. Maps & Spatial Data.
Warakagoda. Deepal et. al. Birds of Sri Lanka (Helm Field Guides). London: Helms Guides, 2012. Print.
Wijeyeratne, Gehan de Silva. Sri Lankan Wildlife (Bradt Guides). Bucks, England: Bradt Travel Ltd. 2007. Print.
Vigallon, S. The Sinharaja Guidebook for Eco-Tourists. Colombo: Stamford Lake Publications, 2007. Print.
Remembering Martin Wijesinghe (a Personal Narrative)
Poster of Martin Wijesinghe. The picture captures a rare mischievous smile taken in 2015 during an OSC DP Geography IA visit. The three endemic species were all photographed within sight of his guest house while he was alive. (all photos by the author).
In November last year Martin Wijesinghe passed away at the advanced age of 82. He was and continues to be intimately associated with the remarkable story of the protection of a logged forest that became the resplendent Sinharaja Man & Biosphere reserve. This large area of lowland and montane tropical rainforest in the Rakwana hills of south western Sri Lanka was a bleak and unappreciated landscape five decades ago. The forest was the site of industrial logging before a hard fought non-violent citizen’s campaign in the 1970s put a stop to that plan. Nearly 50 years later, Sinharaja has made an astounding recovery, illustrating the resilience of nature to recover after harmful human activities. Martin lived through this period of transition serving in the agency that sought to profit from timber and then becoming a guardian and voice for its conservation.
In Sri Lanka, Martin’s story is the stuff of legends. He worked in the Forest Department serving in a variety of roles. He started as a cook but when his sharp naturalist skills were recognized he extended himself into guiding and supporting researchers who were studying forest dynamics and species in the early 1980s. He had interactions with leading scientists such as Professor Balasubramaniyam, P.B. Karunarathne, Nimal and Savitri Gunatilleke, Peter Ashton and Sarath Kotagama. My understanding is that it was Professor Kotagama that encouraged Martin to set up a guest house for bird watchers in the early 1990s. Uditha Wijesena’s blog post from 2016 on Martin details these facets of his beginnings as a conservationist. By the turn of the century Martin was known as the man to go to if you wanted to know about Sinharaja.
Snapshots from my first visit to Sinharaja with Anna Lockwood in March 2000. From top: catching a ride to Sinhagala with a researcher (note the open roads that are now under the forest canopy), Ian with Martin after one of the long hikes, with the two Finnish birdwatchers on the veranda at Martin’s place. (photos taken by Anna Lockwood)
Early Personal Forays
I first heard about Martin through publications from the Oriental Bird Club (OBC). In the mid-1990s I was dipping my toes in the world of serious birdwatching and become a member of the OBC. Birding complimented my interest in natural history, landscapes and efforts to document their changes in key South Asian habitats. I had just started working as a teacher in Bangladesh and one of my first steps was to invest in a pair of Leica Trinovid binoculars (a purchase that took a good year of saving to afford). On weekends I started going on birding expeditions with the towering pioneers of the field in Bangladesh including Dave Johnson, Paul Thompson, Ronnie Halder and Enam Ul Haque. Their stories and articles from the OBC’s journals led me to Thailand and also helped me better understand the unique birds of the southern Western Ghats. In 1997 the OBC published a thin but enormously valuable supplement entitled A Birdwatcher’s Guide to Sri Lanka (part of OBC Bulletin). The pamphlet written by Gehan de Silva Wijeyeratne, Lester Perera, Jeevan William, Deepal Warakagoda and Nirma de Silva Wijeyeratne emphasized the importance of Sinharaja as the key site to visit for most Sri Lankan endemics and notable species. In those days there was only one place to stay at in Sinharaja and it was run by a man named Martin.
In April 2000 my cousin Anna and I found ourselves negotiating rough, monsoon-gouged roads in an uncertain direction towards the Kudawa entrance of Sinharaja. Sri Lanka, its food, culture and people were familiar because of our family’s long connections in the northern areas of the island. Our grandfather Edson had been a birder accompanying Sid Bunker on many an outing in the wetlands and coastal areas around Vaddukkodai in the 1940-60s. Now a half century later the grandkids were on their own adventure in a very different part of this diverse island.
The route to Martin’s was not clear and our van driver was new to the area. At the time, Sinharaja was far off the beaten path for most tourists. The driver became quite agitated in the final few kilometers as the old logging road wound its way up through small home gardens and tea plantations from Kudawa to Martin’s place. It took 4-5 hours from Colombo (today we can do the trip in 2.5 hours thanks to the vastly improved roads). Upon arrival we were greeted by Martin and his family. His place was simple with 3-5 rooms that were grouped around his family home and a plot of tea on the edge of the forest. There was no power or solar-heated water but we were in a superb birding location. A partially covered verandah with a dining table was where we spent most of the time when we weren’t walking. It overlooked the edge of secondary forest that had been logged three decades earlier. Across the valley towering emergent trees created a wall of undisturbed rainforest vegetation. We sipped tea and waited for different feathered delights to fly over. Anna and I dedicated four days to Sinharaja and had a chance to explore the key trails to the Research Center, Sinhagala and Moulawella peaks. In the evenings we spoke with Martin, enjoyed the company of two very serious Finnish birdwatchers and tallied our lists of species seen.
In 2005, married to Raina and with our son Lenny aged 18 months, I returned to Sri Lanka to teach IB Diploma Geography and Environmental Systems at the Overseas School of Colombo. Previous to my arrival, there was low enthusiasm for conducting the required IA field work. It was an anxious time as the war was raging in the north of the island. In my job interviews I proposed conducting the field work using the safe and homey location of Martin’s as a base. Laurie McLellan, the Head of the School, seemed interested and perhaps my enthusiasm for both Sinharaja and Sri Lanka helped secure my contract. On my first visit with students in October 2005 I was lucky to be able to request Professor Kotagama and his PhD student Chaminda Pradeep Ratnayake to accompany us. That really helped as I started to establish learning and data collection routines for the students in the forest. Over the years the focus of the data collection has gone from ecology-oriented studies to looking at human interactions in the landscape outside of the protected area boundaries. The learning experiences were successful (we recently completed the 17th IA study) and we continue to come back for annual studies-usually in May at the end of the DP1 academic year.
Martin’s Forest Lodge played host to OSC classes over the final 16 years of his life. The place grew in a somewhat haphazard manner; new rooms were added and the verandah area was enlarged. Around 2018 grid electricity was extended to Kudawa. Sadly the home-made dynamos that Martin had rigged up went into disrepair. Meanwhile the secondary forest grew and today there are virtually no signs of the ravages of the logging in the 1970s. When you stay at Martin’s it is a true home stay and after a few nights you are part of the family. That family is now global and includes most serious birders and naturalists who have visited Sri Lanka as well as the many Sri Lankans who visit regularly. I always enjoy interacting with other visitors who have come to Martin’s with a similar approach to escaping the city in search of Sinharaja’s serenity and enormous diversity. I’ve crossed paths with Deepal Warakagoda, Sarinda Unamboowe, Michal & Nancy van der Poorten, Vimukthi Weeratunga, Uditha Hettige, Dulan Ranga Vidanapathirana, Mevan Piyasena and many others while at Martin’s.
Martin has left us with a legacy of love and respect for Sinharaja and Sri Lanka’s rainforests. Through his life and efforts so many of us have learnt to love what previous generations might have dismissed as a leech-infested, jungle only worth its weight in timber.
Over the years OSC geography students have had a chance to speak with Martin and learn more about his experiences in Sinharaja.
OSC students from the class of 2020 speaking with Martin. Luca asking questions next to Rashmi and Anouk. Josh and Arnav are also seen while Savi, Seth and Neha are out of the frame. Taken on the delayed IA study that happened in September 2019.
REFERENCES
de Silva Wijeyeratne Gehan, Lester Perera, Jeevan William, Deepal Warakagoda and Nirma de Silva Wijeyeratne. “A Birdwatcher’s Guide to Sri Lanka.” OBC Bulletin Supplement. 1997. Link.
de Silva Wijeyeratne Gehan. Birds of Sri Lanka: A Pictorial Guide and Checklist. Colombo: Jetwings, 2010. Web.
Gunatilleke, Nadidra. “Martin Wijesinghe: Unofficial ‘caretaker’ of Sinharaja.” Daily News. 1 April 2019. Web.
Raṇasiṃha, Ḍaglas Bī. The Faithful Foreigner: Thilo Hoffmann, the Man who Saved Sinharaja. 2015. Colombo: A. Baur & Co. (Pvt.) Ltd , 2015. Print.
Wijesena, Uditha. “Martin Wijesinghe ……of Sinharaja Fame.” Uditha Wijesena Blog. 2016. Web.
Wijesinghe, Martin. “Nesting of Green-billed Coucals Centropus chlororhynchos in Sinharaja, Sri Lanka.” Forktail 1999. Web.
Down South Musings
Room with an exquisite view at the Rainforest Ecolodge
The last three years have seen a series of unexpected events disrupt life, the economic bedrock and learning activities here in Sri Lanka. The Easter bombing on April 21, 2019 caused an initial body blow to the country. We were just getting our feet back on the ground when the COVID pandemic swept the world and caused the first lockdown in March 2020. Now in the spring of 2022, as the COVID problem has receded a political and economic mess of unprecedented scale has engulfed the country. The Overseas School of Colombo, where I teach and lead key experiential education programs, has managed these challenges with wisdom, creativity and fortitude. A casualty of the initial response was the cancellation of most sports and field trips for the better part of a year. That was hard on students and as well as teachers like me who based learning activities on getting students outside of the traditional classroom. In January this year, in the face of lingering doubts, we were able to defy odds and run our annual secondary Week Without Walls program Explore Sri Lanka!. One of the trips, affectionately entitled Down South, encapsulated the challenge and joy of running these learning experiences during such challenging times.
I designed the Down South learning experience to expose students to the culture and natural history of southern Sri Lanka off the tourist beaten path. It joins a host of other Microtrips that are designed to get small groups of OSC students and teachers into the different corners of Sri Lanka where they can learn about the rich history, culture and ecology of our island home. In past years we had sent groups to the Hambantota area with a service focus. The new Down South itinerary was designed to build on the geographic focus while incorporating some of the kinds of learning experiences (hiking, bird watching, natural history etc.) that have made the Sri Lanka Highlands microtrip so successful. Our team included 17 DP1 and MYP5 students, Desline Attanayake (OSC’s logistics coordinator), Melinda Tondeur (our new French teacher) and myself.
A collage of species as seen by the Down South Experience Sri Lanka team in southern Sri Lanka. From upper left clockwise wrapped around the leech sock image: Pseudophilautus poppiae at Enasalwaththa (Rainforest Ecolodge area), Sri Lanka Woodshrike (Tephrodornis affinis) at Kahandamodara, a different Pseudophilautus sp. also at Enasalwaththa and a Blue-Tailed Bee-eater (Merops philippinus) at Bundala NP.
Dry Zone Component
We spent the first three days based out of Back of Beyond’s Kahandamodara wellness center and then transitioned into the south-eastern Rakwana hills at the Rainforest Ecolodge. Few OSC students have stayed at a Back of Beyond property before their WWW experiences (OSC families are more likely to patronize the fabulous large hotels and resorts on the island). I appreciate Back of Beyond for their sublime locations, minimalistic yet tasteful approach, ecological design ethic, exceptional Sri Lankan cuisine and hardworking staff. Kahandamodara has a spacious campus with good dry zone vegetation and access to a relatively lonely stretch of beach on the southernmost coast near Tangalle. There are several bungalows, a pool and common area/yoga studio which makes it ideal for medium-size (under 20) school groups.
The significant day trip to us to the 2nd Century BCE Buddhist ruins and hermitage at Situlpawwa and then Bundala National Park. Situlpawwa is one of my favorite sites and had been a destination for an early WWW trip (with the Class of 2013). It is located within the protective boundaries of Yala but few visitors, other than religious pilgrims, go to Situlpawwa. In its sprawling area you can explore low hills, dagobas, monastic caves and pathways on foot. From the granite hillocks you get sweeping views over Yala’s forested interiors. Wildlife sightings are good-our class was astonished by the elephants, wild boar and sambar deer begging for food at the parking lot. My favorite sighting was a fly over by dozens of Malabar Pied Hornbills when our family visited Situlpawwa last year. We were standing at the Dagoba and they flew by at eye level, one wave after another heading east. The Down South group spent the second half of the day doing a jeep safari around Bundala. As is usually the case, we were the only jeeps in the protected area and enjoyed excellent sightings of birds including several rarities.
Down South group members climbing a hillock at Situlpawwa.
Bundala National Park is an excellent place to get non-birders excited about the joys of observing, photographing and identifying feathered creatures.
An osprey (Pandion haliaetus) at Bundala National Park. Though these birds are common in many areas around the world they are quite rare in this part of Sri Lanka. We were thrilled to observe it in excellent afternoon light.
Rainforest Component
Mid-week we boarded our buses and moved north west up to Deniyaya and the edges of Sinharaja Rainforest at Enasalwaththa. The vegetation in the rolling hills and home gardens changed as we entered the wet zone and transitioned to the 1,000 meter plateau in this edge of the rainforest. Our two night say was a reminder that the Rainforest Ecolodge is a spell-binding and activity-rich area to bring our students too. We did a series of morning, daytime and nocturnal hikes looking to see as much of the biodiversity that Sinharaja is so well known for. Bird life was quite good. Flock activity seemed to be less than my earlier visit but we had a good encounter with a relatively rare Legge’s Hawk Eagle (Nisaetus kelaarti). Blue Magpies (Urocissa ornata) fly right through the property in the morning and they are sometimes followed by Red Face Malkohas (Phaenicophaeus pyrrhocephalus) and other endemics . I found the frog watching to be especially rewarding. After quite a bit of hard looking with JagathJayawardana, the capable guide at the hotel, we found Pseudophilautus poppiae one of the critically endangered green frogs that has a narrow range in these hills and Morningside. Another interesting find was a Tarantula (Poecilotheria sp. of some sort) that lives in a dead log near the Ecolodge and regularly come out to awe guests.
OSC students birding at the Rainforest Ecolodge (right, both images) and Situlpawwa (left).
OSC students and teachers on the trail near the Rainforest Ecolodge. Left: DP1 students Huirong, Eleez & Thevuni Center: Desline & Melinda warding off leeches with a homebrew spray and socks. Right: MYP5 students Chirath, Yali, Leonie and Vansh at the stream (our destination on the waterfall hike).
Arboreal biodiversity near the Rainforest Ecolodge: The stunningly glorious endemic creeper Kenrikcia walkeri flanked by Legge’s Hawk Eagle (Nisaetus kelaarti).
The endemic Sri lanka Blue Magpie (Urocissa ornata) in forest near the Rainforest Ecolodge.
Amphibians and arachnid at Enasalwaththa (Rainforest Ecolodge area). From top to bottom: Pseudophilautus sp. (perhaps poppiae) in forest /tea plantation edge. Unidentified tarantula (Poecilotheria sp. of some sort) at the hotel gate. Nannophrys ceylonensis from a wet rock face to the west of the Rainforest Ecolodge.
Montane forest canopy at Enasalwaththa (Rainforest Ecolodge area). Taken in 2020 during a flowering of the principal canopy species Shorea trapezifolia. This was printed as a 20″20″ fine art print in a series of given to departing OSC faculty members in 2021.
The weather was good to us-cool and relatively dry as it usually is during the short dry season in January/February. A rain shower on our last day at the Ecolodge helped bring out the amphibians and I was happy about that. The clouds and blue sky (opening photo) were spectacular as we packed up to leave. The whole group would have gladly extended our stay. Nevertheless, we had a good sense of accomplishment returning to campus free of sickness and incident after so many rich experiences. The other WWW groups came in with a similar sense of elation, having beaten the odds to pull off this experience of learning across our island home.
2022 OSC Down South group at the waterfall near to the Rainforest Ecolodge.
INTERACTIVE MAP OF DOWN SOUTH
Route map of the Down South WWW learning experience.
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PAST WWW TRIPS
- WWW 2013 Sinharaja
- WWW 2014 Dry Zone
- WWW 2015 Sri Lanka Highlands
- WWW 2016 Sri Lanka Highlands
- WWW 2017 Sri Lanka Highlands
- WWW 2018 Sri Lanka Highlands
- WWW 2019 Sri Lanka Highlands
- WWW 2020 Sri Lanka Highlands
- WWW 2021 -CANCELLED (COVID)
FURTHER READING & REFERENCES
De Silva, Anslem and Kanishka Ukuwela. A Naturalist’s Guide to the Reptiles of Sri Lanka. Colombo: Vijitha Yapa Publications, 2017. Print.
De Silva, Anslem and Kanishka Ukuwela & Dilan Chathuranga. A Photographic Guide to the Amphibians of Sri Lanka. Oxford: John Beaufoy Publishing, 2021. Print.
Somaweera, Ruchira & Nilusha. Lizards of Sri Lanka: A Colour Guide With Field Keys. Frankfurt: Edition Chimaira 2009. Print.
Warakagoda. Deepal et. al. Birds of Sri Lanka (Helm Field Guides). London: Helms Guides, 2012. Print.
This post was started in February but the final draft of this post was published on 7 May 2022 and then backdated as I catch up on happenings.
Sri Lankan Rainforest Forays in the Time of the Pandemic
Collage of Sri Lankan (mostly) endemic birds seen in eastern and western Sinharaja. Clockwise from left: Layard’s Parakeet (Psittacula calthrapae), Sri Lanka Spurfowl (Galloperdix bicalcarata), Sri Lanka Frogmouth (Batrachostomus moniliger) and Sri Lanka Blue magpie (Urocissa ornata). The Frogmouth, of course, is also found in the Western Ghats of southern India.
Aside from the IA field study last September (described in the previous post) I have had the opportunity to take several other short visits to Sinharaja. Two of these were to the Kudawa side and the third was a visit to the Rainforest Ecolodge in south-eastern Sinharaja. These trips were mainly designed for my mind and spirit to get a break from city life. One was a solo trip while two involved time with Lenny and our friends Nirosha and Rashmi Bopitiya. Of course, there were opportunities to look for and photograph birds, amphibians, reptiles and plants in the rainforest landscape.
Eastern Sinharaja sub-montane forest with flowering canopy.
South-Eastern Sinharaja
The south-eastern side of Sinharaja is far less visited and in my personal case it had been several years since I has last been (see WWW blog post from 2012 and 2013). Lenny and I took a father and son trip at the beginning of our winter holidays. The drive is longer than the Kudawa entrance (about four vs 2 hours) but the site and situation of the Rainforest Ecolodge makes it worthwhile. We had three nights at a time when visitation was relatively low and there were reasonable deals to make it an attractive place to stay. We did a few short hikes abut mostly enjoyed simply walking on the access roads through healthy montane rainforest. I am drawn to the exquisite sub montane forest in this area and there are numerous places to get canopy level perspectives. During our stay several key trees including Shorea trapezifolia were in flower. We had several good walks with the Rainforest Ecolodge naturalist who helped in the discovery of several key frog species seen in this post. Otherwise Lenny and I wandered on the access roads where we encountered several mixed-species flocks. The same flocks flew right through the hotel area and one didn’t have to go too far to see many of Sri Lanka’s spectacular endemic birds.
Scenes from the Rainforest Ecolodge in south-eastern Sinharaja. Set on the edge of a tea garden at 1000 meters, the hotel utilizes recycled containers and minimalist steel structures to give visitors a unique and intimate sense of the sub-montane rainforest.
Selected frogs from Sinharaja (From top): Reticulate Tree Frog (Pseudophilautus reticulatus) and the Cheeky shrub frog (Pseudophilautus procax) from the Rainforest ecolodge area. Common Hourglass Tree-frogs (Polypedates cruciger) laying eggs near Kudawa. Sri Lanka rock frog (Nannophrys ceylonensis) at a stream near the Rainforest Ecolodge. Help with identification and lighting thanks to Vasanth at the Rainforest Ecolodge. Dulan Ranga Vidanapathirana helped confirm species for me and I have loaded these up on iNaturalist.
Clockwise from left: Sri Lankan Giant Squirrel (Ratufa macroura) in south-eastern Sinharaja, Purple-faced langur (Semnopithecus vetulus) also near the rainforest ecolodge. Strobilanthes lupulina on the road east of Kudawa village.
Slaty-legged Crake (Rallina eurizonoides), a rare winter migrant visitor. This one was hanging around the kitchen drain at Martin’s Forest Lodge. This was my first sighting in Sinharaja, but apparently they are seen in many of home gardens during the winter season.
North-Western Sinharaja
The Kudawa entrance has been, of course, much quieter because of the COVID situation. On two trips there in December and March I focused on looking for birds and reptiles. On my solo trip in late December I walked with my assigned guide, Ratna and explored out to the research station and then up to Moulawella peak. The hikes were good but my best sightings came from Martin’s where I spotted several rarities while having tea and appreciating the space and solitude. A rather shy Slaty-legged Crake (Rallina eurizonoides) stepped out in the afternoon to look for something to eat in the drain outlet. My camera was set up and ready to go such that I got a few brief shots without my tea getting cold. Another highlight was spending time at Ratnasiri’s hide. This neighbor of Martin is building a small cottage on the road above Kudawa and has set up a simple hide where visitors can observe Sri Lanka Spurfowl and other difficult to see endemics. I had an early morning spurfowl encounter that produced dark photos and an exhilarating sound recording (click below).
Village & forest scenes on the edge of Sinharaja (from upper left): Pepper (Piper nigrum) from a home garden drying, a gourd for tapping Kithul, Raja (Anoectochilus regalis) orchid, road passing through Morapitiya, vine (Coscinium fenestratum) and leeches on my sock.
Collage of Sri Lankan endemic birds seen in eastern and western Sinharaja on the three visits. Red faced Malkoha (Phaenicophaeus pyrrhocephalus), Serendib Scops Owl (Otus thilohoffmanni), Green-billed coucal (Centropus chlororhynchos), Sri Lanka Scimitar Babbler (Pomatorhinus melanurus), Sri Lanka Gray hornbill (Ocyceros gingalensis) and Sri Lanka Green Pigeon (Treron pompadora).
In March Lenny and I came back to Kudawa and Martin’s with our friend Nirosha and her daughter Rashmi (from OSC’s Class of 2021). We enjoyed a morning of birding with Thilak, the superb independent guide who has established himself as one of the most knowledgeable birders in the area. Sure enough, we had fine sightings of a nesting SL Gray hornbill (Ocyceros gingalensis) and Chestnut-backed Owlet (Glaucidium castanotum) and mixed-species flock. On our return Thilak found a roosting Serendib Scops Owl (Otus thilohoffmanni) which we quietly observed and then photographed. Once again it was found in mixed Pinus caribaea and secondary forest. I find it intriguing that this rare bird species, so new to science, is found in a habitat that has been a monoculture plantation and is now recovering on its way back to being healthy rainforest. This observations seems to support the idea that Pinus caribaea are good intermediate species to establish rainforest in retorsion efforts (see Ashton et al).
Otus thilohoffmanni strip with a 600mm lens in RAW.
Final choice of the 200-500mm lens series Serendib Scops Owl (Otus thilohoffmanni)
A male Lyre-head (or Hump-nosed) Lizard (Lyriocephalus scutatus) in Sinharaja rainforest. This large species is surely one of the most resplendent of Sri Lanka’s many endemic lizards. It is also completely unique (it has its own genus) and there is nothing else in South Asia that looks like it. I’m always on the look out for them when in the rainforest and it has been nearly 10 years since I last saw a male (on the epic Kudawa-Sinhagala-Deniyaya trek in 2012 see https://ianlockwood.wordpress.com/…/a-path-less…/ ).
This individual was found by the sharp-eyed genius guide Thilak Ellawelage at the end of a day with many great bird sightings. He spotted it in the forest above Martin’s and I was able to photograph it both that afternoon and then next morning. Help with holding the strobes was provided by Nirosha Bopitiya (afternoon) and Ranjith (morning), the FD guide working with us. This is a morning shot taken with a 105 mm lens and two Godox strobes (one in a cumbersome but quite effective studio diffuser).
For the last several trips I have been on the lookout for the endemic Hump(or Lyre) Nosed Lizard (Lyriocephalus scutatus). I have had good sightings in past years but I’m working on better lighting with multiple flash units and a diffuser. Thilak spotted a mature male near to Martin’s and alerted us to it as he was on his way down in the evening. With the help of Nirosha I was able to get a few images that evening and then I came back and found it on my won the next day for another session. Earlier in the year I had bought a Beetle Diffuser from Varun GB in India and this was my first attempt at putting into action in the field. The results are good but later experiments showed that I need to have the flash unit closer to the subject.
Sri Lanka Spurfowl (Galloperdix bicalcarata) at Ratnasiri’s hide. For many years this has been one of the most difficult endemic birds to photographs. That all changed when guides realized that spurfowl were regular visitors to home gardens drains on the edge of the forest.
On our final morning we walked down to Ratnasiri’s to look for the spurfowl. There was another group of Sri Lankan photographers led by Chintika De Silva so we gave them a chance and then spent time in the hide later. While we were waiting Rashmi spotted two large frogs climbing up a tree. These turned out to be part of a group of Common Hourglass Tree-frogs (Polypedates cruciger). Although its name suggests that it easy to see (its conservation status is “least concern”) we enjoyed a really unique gathering. A total of six individuals put on a show of courtship and then mating in broad daylight. The smaller males, clinging to the back of the females whipped up and fertilized the eggs being laid over a small spring. That evening, fulfilled by our many sightings and interactions with the people of Kudawa, we returned to Colombo. On our drive out we passed under dark cumulonimbus clouds and, soon enough, a torrential downpour brought relief to the hills. It was the kind of heavy rains that kicks off the life cycle for the tree-frogs we had been observing that morning.
Selected heat maps from three different visit to Sinharaja (two in December 2020 and the final trip in March 2021)
Snapshots from the March 2021 visit to Sinharaja. From Left: Rashmi, Martin, Chandralatha, Nirosha, Lenny & Ian at the forest lodge. Martin on his verandah. Lenny, Ratnasiri and Rashmi at his new cottage.
SELECTED REFERENCES
Ashton, P.M.S and S. Gamage, I. A. U. N. Gunatilleke and C. V. S. Gunatilleke. “Restoration of a Sri Lankan Rainforest: Using Caribbean Pine Pinus caribaea as a Nurse for Establishing Late-Successional Tree Species.” Journal of Applied Ecology. 1997, 34 . Web via JSTOR.
De Silva, Anslem. Amphibians of Sri Lanka: A Photographic Guide to Common Frogs, Toad Caecilians. Published by author, 2009. Print.
De Silva, Anslem and Kanishka Ukuwela. A Naturalist’s Guide to the Reptiles of Sri Lanka. Colombo: Vijitha Yapa Publishing, 2017. Print.
DeZoysa, Neela and Rhyana Raheem. Sinharaja: A Rainforest in Sri Lanka. Colombo: March for Conservation, 1990. Print.
Gunatilleke, C.V.S, et al. Ecology of Sinharaja Rain Forest and the Forest Dynamics Plot in Sri Lanka’s Natural World Heritage Site. Colombo: WHT Publications, 2004. Print.
Harrison, John. A Field Guide to the Birds of Sri Lanka. UK: Oxford University Press, 1999. Print.
Kotagama, Sarath W and Eben Goodale. “The composition and spatial organization of mixed-species flocks in a Sri Lankan rainforest.” Forktail. 2004. Print & Web.
Liyanage, L. P. K. et al. “Assessment of Tourist and Community Perception with Regard to Tourism Sustainability Indicators: A Case Study of Sinharaja World Heritage Rainforest, Sri Lanka.” World Academy of Science, Engineering and Technology International Journal of Social and Business Sciences. Vol 12 No. 7. 2018. Web.
Lockwood, Ian. “Into the Wet: Field Notes From Sri Lanka’s Wet Zone.” Sanctuary Asia. August/September 2007. 3-11. Print. PDF.
Lockwood, Ian. “Montane Biodiversity in the Land of Serendipity.” Sanctuary Asia. July 2010. Print.
Lockwood, Ian. “Preliminary Analysis of Land Cover in the Sinharaja Adiviya using Planet Dove Imagery.” Ian Lockwood Blog. September 2019. Web.
Singhalage Darshani, Nadeera Weerasinghe and Gehan de Silva Wijeratne. A Naturalist’s Guide to the Flowers of Sri Lanka. Colombo: Vijitha Yapa Publications, 2018. Print.
Sri Lanka Survey Department. Sheets 80_x & 81_x (1:10,000) 2nd Edition. Colombo: 2017. Maps & Spatial Data.
Warakagoda, Deepal et. al. Birds of Sri Lanka (Helm Field Guides). London: Helms Guides, 2012. Print.
Wikramanayake, Eric. “Sri Lankan Moist Forests Ecoregion: An Imperiled Island Rainforest.” The Encyclopedia of Conservation. 2020. Web.
Wijeyeratne, Gehan de Silva. Sri Lankan Wildlife (Bradt Guides). Bucks, England: Bradt Travel Ltd. 2007. Print.
Vigallon, S. The Sinharaja Guidebook for Eco-Tourists. Colombo: Stamford Lake Publications, 2007. Print.
Sinharaja: The IA Must Go On
OSC’s class of 2021 DP Geography class. Standing from left: Kevin, Satwik, Imandi, Talia, Ashvini, Rukshi and Rika. Kneeling: the author and Rashmi (Class of 2020). Photograph courtesy of Desline Attanayake
In Sri Lanka we have been living through an age of disruption-first with senseless bombing in April 2019 and then with the ongoing COVID-19 pandemic. The impact to the island’s tourism industry has been profound. Flights were cancelled in the spring of 2020 and the country went into lock down. At the time of writing the country was experiencing being called a 2nd wave of the virus. This all had an impact on Sinharaja, the resplendent rainforest that has a thriving, low-impact model of ecotourism at its two major entrances. It has served as a place for exploration and learning both at a personal level and for my students of the Overseas School of Colombo.
The IA Must Go On
In hindsight, the first quarter of the 2020-21 school year experienced a relative lull from the pandemic storm and we ran face-to-face classes. During that time I was able to take my small cohort of seven Class of 2021 DP Geography students to Sinharaja to complete their field work for their Internal Assessment (IA). The final report they produce is an important milestone along the 18-month journey of the course. It normally counts for between 20-25 % of their overall grade but because exams have been cancelled two years in a row, the IA is the only piece of work that the IB has to assess students. This school year it is slated to count for 35% of overall grades but it is likely that it will have a greater impact on how grades are allocated. Many schools have been forced to cancel field work and we were fortunate to be able to squeeze our trip in when the COVID situation was relatively stable.
We had four days based out of Martin’s Forest Lodge. Desline was able to support the trip and we were supported by Rashmi who had just graduated and knew the data collection routines really well. Both of them enjoy birds and other creatures and we were a strong team. During our time the students were able to conduct 59 separate interviews in four teams of two. They used Survey 123 again and were able to explore the impact of COVID on lives and tourism. Over the next few months they processed and analyzed the data, mapped their sites and then produced final internal assessments (IA) reports. The GIS maps that students use to support their data and analysis had to be created in January during a relatively brief period of face to face teaching. Given that IB exams were cancelled this year it is gratifying that they had such rich experiences to build their internal assessments on.
Captions for Above Images
(Upper left) Satwik & Ashvini interviewing a tuk-tuk driver in western Kudawa.
(Upper right) Talia & Imandi interviewing Sunil, one of the most senior guides working at the Kudawa entrance.
(Lower right) Ashvini & Rukshi on the Sinhagala trail as we retreated back to the research station in the rain.
(Lower center) We got caught in a downpour looking for pit-vipers on the trail leading to Sinhagala. Talia & Imandi are prepared with an umbrella and jacket.
(Lower left) Talia & Imandi interviewing a family on the road to the west of Kudawa. They make a living growing tea on a small parcel of land.
(Center left) Thilak, Sinharaja’s talented and well known private guide, clears a tree that had fallen across the road leading to Martin’s lodge.
Captions:
(Top Left Image) Home Garden near Kudawa village showing a mix of tea, coconut and other crops. The ridge above has a mix of Pinus sp. plantation and secondary forest with Alstonia macrophylla.
(Upper right image) Tea fields in a home garden in the area west of Kudawa village. Typically a field of tea is supplemented with a variety of other fruit and vegetable-bearing plant like this papaya tree. The shade tree is Gliricidia sepium, which is nitrogen fixing and used as an organic nutrient supplement.
(Middle right image) Forest Department Map of the Sinharaja Rainforest Complex showing the updated boundaries from 2019. This and several other maps are on display at the Kudawa entrance.
(Lower image) Scrub areas on the Sinharaja buffer near Kudawa being prepared for a new generation of tea plants.
The recently painted bus stand shelter pays artistic tribute to the denizens of Sinharaja. The COVID pandemic has forced a steep drop in visitor numbers.
Past Blog Posts on Sinharaja
SELECTED REFERENCES
DeZoysa, Neela and Rhyana Raheem. Sinharaja: A Rainforest in Sri Lanka. Colombo: March for Conservation, 1990. Print.
Lockwood, Ian. “Into the Wet: Field Notes From Sri Lanka’s Wet Zone.” Sanctuary Asia. August/September 2007. 3-11. Print. PDF.
Vigallon, S. The Sinharaja Guidebook for Eco-Tourists. Colombo: Stamford Lake Publications, 2007. Print.
Sinharaja 2019 Geography IA Field Studies
Serendib Scops Owl (Otus thilohoffmanni) on the Sinharaja boundary. Spotted with the excellent help of Warsha and the good company of Desline, Luca and Rashmi.
In April this year the unprecedented attacks on churches and hotels shook the stability and relative peace that Sri Lanka has enjoyed in the ten years since the conclusion of the Civil War. One of the minor impacts of the events was the suspension of field trips for almost all schools, including OSC. That meant a delay in the annual field study that I have been running in Sinharaja since 2005. My students were disappointed but they understood the situation and I made plans to conduct the study in the early parts of the 2019-20 school year.
The students in the Class of 2020 IBDP Geography class are a special bunch: they enjoy each other’s company, love to engage in field work (regardless of leeches and wet conditions) and are not fazed by time away from their mobile phones. The group of eight includes class clowns, aspiring activists, experts in GIS, individuals determined to get good grades and several dedicated birdwatchers. There are five Sinhala-speaking individuals who played a key role in the interviews that are at the heart of the data collection.
In September, after receiving the green light to conduct our field work, the class packed up a bus and headed south to Sinharaja. There we spent four days conducting field research in the home gardens on the north-western edge of Sinharaja rainforest. OSC’s logistic coordinator Desline Attanayake provided support in the interviews and fully took part in all aspects of the study. We hired four Sinharaja guides each day and they were essential in leading us through home gardens and helping the students to better understand the area. Some of them like, Chandra (Sri Lanka’s 2nd female guide in Sinharaja) , have been working with OSC groups for more than 10 years and they know our format and aims well. All of the surveys were gathered on foot in rain or shine. We now have a deep and intimate relationship with the area. The Kudawa village and forest on this side of Sinharaja offer ideal conditions for student learning, inquiry and field work on socio-economic, tourist and land-use themes. Martin’s Wijesinghe inimitable Forest Lodge, was once, again the base of operations. We appreciate the forest access and family-like atmosphere that he extends to our OSC groups.
Nisaetus sp. on the road up from Kudawa to Martin’s Forest Lodge. I’m not 100% sure of the identity of this individual. Most likely a Changeable Hawk Eagle (Nisaetus cirrhatus) but also possibly a juvenile Legge’s Hawk Eagle (Nisaetus kelaarti).
Each of the students explored an individual geographic research question but pooled all of their sub-questions into a single survey that small groups could run. The actual survey of 48 questions could take up to 20-30 minutes with introductions and a look around their properties. The respondents were gracious with their time and several teams were invited to have refreshments. With four different teams going in different directions we collected 55 different interviews. Once again, we collected responses using Survey 123 a GIS-enabled data gathering app that all the students could run off their phones (we also recorded every response on paper). This allows students to map their results and do basic spatial analysis on the findings using ArcGIS, the GIS software package that they are learning to operate.
The view south from Moulawella Peak. I take this composite panorama of Sinharaja rainforest canopy every time I have the privilege of sitting on top of this beautiful mountain. Soon after, the first drops started to fall on us and we headed down.
Another view of the endemic Serendib Scops Owl (Otus thilohoffmanni) on the Sinharaja boundary. Spotted with the excellent help of Warsha and the good company of Desline, Luca and Rashmi.
In addition to conducting the surveys, students got a flavor of being ecotourists in a tropical forest. They walked the different forest trails, encountered birds, snakes and spiders, and soaked their feet in jungle streams. Before returning to Colombo on Saturday we hiked up Moulawella peak to take in the full extent of Sinharaja. It was a challenging adventure and we encountered mid-morning shower that thoroughly soaked the group on the descent. But all members of the team made it up and down safely. A highlight of the trip was having an encounter with the rare and endemic Serendib Scops Owl (Otus thilohoffmanni). It helped round off an exhilarating adventure in geographic learning.
Past Blog Posts on Sinharaja
SELECTED REFERENCES
De Silva, Anslem. Amphibians of Sri Lanka: A Photographic Guide to Common Frogs, Toad Caecilians. Published by author, 2009. Print.
De Silva, Anslem and Kanishka Ukuwela. A Naturalist’s Guide to the Reptiles of Sri Lanka. Colombo: Vijitha Yapa Publishing, 2017. Print.
DeZoysa, Neela and Rhyana Raheem. Sinharaja: A Rainforest in Sri Lanka. Colombo: March for Conservation, 1990. Print.
Gunatilleke, C.V.S, et al. Ecology of Sinharaja Rain Forest and the Forest Dynamics Plot in Sri Lanka’s Natural World Heritage Site.Colombo: WHT Publications, 2004. Print.
Harrison, John. A Field Guide to the Birds of Sri Lanka. UK: Oxford University Press, 1999. Print.
Kotagama, Sarath W and Eben Goodale. “The composition and spatial organization of mixed-species flocks in a Sri Lankan rainforest.” Forktail. 2004. Print & Web.
Liyanage, L. P. K. et al. “Assessment of Tourist and Community Perception with Regard to Tourism Sustainability Indicators: A Case Study of Sinharaja World Heritage Rainforest, Sri Lanka.” World Academy of Science, Engineering and Technology International Journal of Social and Business Sciences. Vol 12 No. 7. 2018. Web.
Lockwood, Ian. “Into the Wet: Field Notes From Sri Lanka’s Wet Zone.” Sanctuary Asia. August/September 2007. 3-11. Print. PDF.
Lockwood, Ian. “Montane Biodiversity in the Land of Serendipity.” Sanctuary Asia. July 2010. Print.
Singhalage Darshani, Nadeera Weerasinghe and Gehan de Silva Wijeratne. A Naturalist’s Guide to the Flowers of Sri Lanka. Colombo: Vijitha Yapa Publications, 2018. Print.
Sri Lanka Survey Department. Sheets 80_x & 81_x (1:10,000) 2nd Edition. Colombo: 2017. Maps & Spatial Data.
Warakagoda, Deepal et. al. Birds of Sri Lanka (Helm Field Guides). London: Helms Guides, 2012. Print.
Wijeyeratne, Gehan de Silva. Sri Lankan Wildlife (Bradt Guides). Bucks, England: Bradt Travel Ltd. 2007. Print.
Vigallon, S. The Sinharaja Guidebook for Eco-Tourists. Colombo: Stamford Lake Publications, 2007. Print.
Preliminary Analysis of Land Cover in the Sinharaja Adiviya using Planet Dove Imagery
Figure 1: Sinharaja Adiviya (or greater Sinharaja area) mapped with Planet Dove imagery. Reduced in size to fit this post.
In March this year I attended a fascinating talk entitled “Sinharaja: From a Timber Reserve to a Biological Treasure Trove. What next?” by Nimal and Savitri Gunatilleke at the BMICH in Colombo. The lecture was sponsored by the WNPS in their monthly lecture series. There were several aspects of the talk reflecting back on their decades of research in Sri Lanka’s preeminent forest. Initially, Savitri did botanical studies documenting the diversity of plants in Sinharaja in the period before mechanical logging started (1960s-77). They were witness to a period of commercial logging and recovery to a world-renowned UNESCO-designated world heritage site. The Gunatilleke’s experiments with rainforest restoration were of particular interest to me, given the lessons that these examples hold for similar non-native plantation areas across the Western Ghats/Sri Lankan biodiversity hotspot. In the lecture, both spoke of the broader Sinharaja area of forest fragments and large patches that are connected or satellites to the core area-something they identified as the Sinharaja Adiviya.
At the same time, I was interested in mapping land cover and forest types in study areas that I take students to for fieldwork. Up to this stage, our DP Geography studies in Sinharaja have utilized Survey Department 1:50,000 and 1:10,000 land use data. It comes as a shape file with the data that I have purchased from their map sales office. This data is satisfactory but we have found significant omissions and inaccuracies in the Kudawa area where OSC students conduct fieldwork (much of the data is based on surveys conducted in the early 1980s).
Forest types and land cover are a key part of the Sinharaja story. Literature about the area’s successful conservation refers to primary and secondary forests as well as Pinus caribaea plantations (along the border). Yet, I couldn’t locate GIS-ready shapefiles of boundaries of these forest types. The Forest Department has files based on its 2010 forest cover map but these are, thus far, not in the public sphere. I had mapped the area using a Landsat tile from 2005 (published in my blog in 2012) but this was before I had learned how to conduct a supervised classification of a raster image.
Home garden landscape on the border with Sinharaja rainforest (north west side). (September 2019)
Pinus caribaea plantation in the Sinharaja buffer zone undergoing ecological succession as part of an ecological restoration effort. This area was once dominated by a monoculture community. The intervention of conservationists in thinning pine trees and planting appropriate native species is helping to return it to the climax lowland rainforest community. See linked articles by Professors Mark Ashton, Nimal Gunatillike and others for details of these efforts. (September 2019)
Primary/ridge forest below Moulawella Peak in the Sinharaja core zone. This area did not experience any logging in the period of commercial exploitation in the 1960s-70s. (September 2019)
A Brief Literature Review
A review of land cover analysis in Sinharaja shows that only a few studies have been published to date. The most significant, publicly available study looking at land cover change in Sinharaja was conducted by Buddhika Madurapperuma and Janak Kuruppuarchchi in 2014 (see link). Their analysis used Landsat ETM data between 1993 and 2005 in an area slightly larger than the Sinharaja boundary provided by the Forest Department. They used a Normalized Difference Vegetation Index (NDVI) and Burn Index (BI) to assess changes in three years (2001, 1993 and 2005). The study is thorough but the data that they use is coarse and it is difficult to get a sense of the land cover patterns at a large scale. They conclude with an acknowledgment that ground surveys need to be conducted to better understand the change. Thanura Madusanka Silva published a study entitled “Land Cover Changes of a Tropical Forest Buffer Zone” in 2018 that used Sri Lanka Survey Department data to assess changes in land use in the Kudawa area (see link). This study is based on secondary data and not satellite imagery and it concludes that major change has occurred in home garden areas. There may be other studies that I have missed but the field of land cover change in Sinharaja, as seen in satellite imagery, is ripe for further study.
Figure 2: Supervised classification of land cover based on Planet Dove imagery. Because the images were not collected on the same flight, there are some unavoidable gaps and seams, that are visible on close inspection.
Planet Dove Methodology and Results
Two years ago I became familiar with Planet Dove imagery and saw that it might provide a solution in my attempts to classify land cover in the Sinharaja area. Planet Dove’s constellation of 120+ satellites, which revisit the same areas every day, offers a new opportunity to visualize and analyze any area of the earth. At the beginning of 2019 I successfully applied to Planet’s Education and Research program and was able to download a host of tiles of study areas. I found a series of cloud-free scenes from December 2018 and downloaded them. These are from around December 18 but some were collected at slightly different dates. Using ArcGIS, I mosaiced these various tiles so that I had most of the area Sinharaja Adiviya covered. Because the images were not collected on the same flight there is some unavoidable gaps and visible seams, that are visible on close inspection. The improved spatial resolution of 3-5m means that it is easier to distinguish between different land cover types (lowland rainforest, vs, Pinus caribaea plantation, for example). Initially I worked on a map using the non-visible near infrared (NIR 780-860 nm) layer to highlight vegetation (see figure 1).
In the second part of my efforts, I conducted a supervised classification using tools in ArcGIS’s Spatial Analyst extension toolbar. For land cover type, I collected between 5 and 10 training samples and merged each of them into their own distinct land cover type. The classified image (Figure 2) clearly highlights the dense lowland rainforest pockets in a landscape dominated by home garden and tea agriculture. The effort to categorize the Pinus caribaea plantation was partially successful. However, there are errors with some of the classification. For example, plantation in the midst of dense (primary) forest near Moulawella peak.
Conclusion/Future
In the next attempt I plan to collect more training samples in the hopes of getting a more accurate picture of the land cover patterns. A focused study on the pine forest in the buffer area near Kudawa deserves attention. Some of these areas are being successfully restored to their original lowland rainforest vegetation type and time a change study would be illuminating. There are areas of the landscape that I am very familiar with (the Kudawa tourist and village zone) while I have far less personal experience in other areas like western Sinharaja and the various forest fragments. Further studies of landcover need to be verified with ground truthing in the field.
Figure 3: The Kudawa area of Sinharaja with classification of land cover based on Planet Dove imagery. In this image I have highlighted the popular tourist area around the settlement of Kudawa. The lower part of the map experienced mechanical logging 40+ years ago (some of it is encircled in red). The stream running down to the Sinharaja ticket gate is not depicted on this map and is missing from Survey Department 1:10,000 sheets that were used for the hydro/stream layer.
SELECTED REFERENCES (Land Cover Focus)
Ashton, Mark et al. “Restoration pathways for rain forest in southwest Sri Lanka: A review of concepts and models.” Forest Ecology and Management 154(3):409-430. December 2001. Web.
Ashton, Mark et al. “Restoration of rain forest beneath pine plantations: A relay floristic model with special application to tropical South Asia.” Forest Ecology and Management 329:351–359. October 2014. Web.
Gunatilleke, Nimal, C.V.S. Gunatilleke and M.A.A. Dilhan. “Plant Biogeography and Conservation of the South Western Hill Forests of Sri Lanka.” The Raffles Bulletin of Zoology, 2005. No. 12 9-22. Web.
Gunatilleke, C.V.S, et al. Ecology of Sinharaja Rain Forest and the Forest Dynamics Plot in Sri Lanka’s Natural World Heritage Site. Colombo: WHT Publications, 2004. Print.
Lockwood, Ian. “Into the Wet: Field Notes From Sri Lanka’s Wet Zone.” Sanctuary Asia. August/September 2007. 3-11. Print. PDF.
Madurapperuma Buddhika and Kuruppuarachchi Janaka.“Detecting Land-cover Change using Mappable Vegetation Related Indices: A Case Study from the Sinharaja Man and the Biosphere Reserve.” Journal of Tropical Forestry and Environment Vol.4, No 01 (2014) 50-58. May 2014. Web.
Madusanka, Thanura. “Land Cover Changes of Tropical Forest Buffer zone A case study of Kudawa Village, Sinharaja forest buffer zone; Sri Lanka.” International Journal of Scientific and Research Publications. October 2018. Web.
Ministry of Mahaweli Development and Environment. Proceedings of the Stakeholder Workshop on Landscape Planning & Management. 29 September 2017. Web. See page 10 for Sinharaja map.
Planet Team. Planet Application Program Interface: In Space for Life on Earth. San Francisco, CA. 2017. Web.
Sri Lanka Survey Department. District Land Use Maps. 1983. Print/Web.
UN-REDD Programme. Sri Lanka’s Forest Reference Level submission to the UNFCCC. January 2017. Web.
Wijesooriya W. A. D. A. and, C. V. S. Gunatilleke. “Buffer Zone of the Sinharaja Biosphere Reserve in Sri Lanka and Its Management Strategies.” Journal of the National Science Foundation of Sri Lanka. 31(1–2), 57. June 2003. Web.
Sri Lanka Mountain Traverse (Part I)
A collage of diversity: highlights from 10 days of traversing Sri Lanka’s mountain zones.
Sri Lanka’s modest island boundaries hosts a rich assemblage of habitats with unique life forms that contribute to its status as one of 36 global biodiversity hotspots (together with the Western Ghats of India). Several of these places-namely Sinharaja rainforest and the Central Highlands -are also recognized by UNESCO as World Heritage Sites. In mid-June this year my son Lenny and I took an unforgettable ten day south-north traverse through the three most important mountain ranges of Sri Lanka looking to explore themes of endemism.
The Rakwana Hills (including Sinharaja), Central Highlands and Knuckles range share certain geographic and vegetation patterns and yet have distinct species with very restricted distributions. They are all in the “wet zone” receiving between 2,500-6,000 mm of rain (see SL Biodiversity Clearing House Mechanism) . In May this year I read a new article by Sri Lankan amphibian guru Madhava Meegaskumbura and colleagues entitled “Diversification of shrub frogs (Rhacophoridae, Pseudophilautus) in Sri Lanka – Timing and geographic context” (see Molecular Phylogenetics and Evolution and the summary by Dilrukshi Handunnetti in Mongabay). The authors highlight the genus Pseudophilautus in the three ranges and their connections to shrub frogs in the Western Ghats. They delve deep into the species at a molecular level that is beyond most of us but I was fascinated by the role of mountain geography in the species’ distribution. This got me thinking about doing a single traverse through the same ranges at the onset of the South West Monsoon.
About the same time, Lenny was formulating an approach to his IB MYP5 personal project. This culminating exercise challenges students to pick their own project, make a product or produce an outcome and then reflect deeply on the process. He had been fascinated by our (thus far, futile) search for the rare point endemic marbled streamlined frog (Nannophrys marmorata) in the Knuckles range. With a little encouragement from his parents, Lenny decided to explore broad themes of endemism in Sri Lanka using the medium of photography.
Primary ridge forest in Western Sinharaja. These relatively inaccessible areas were never logged during the mechanized logging period (1960s-mid 1970s). The prominent tree species is Shorea trapezifolia from the Dipterocarpaceae family.
Sinharaja West
We started our 10 day traverse, driving southwards from Colombo on the expressway in the middle of heavy monsoon showers. Our first three days and two nights were spent in the western side of Sinharaja, staying with the incomparable Martin Wijeysinghe at his Jungle Lodge. There were showers on all days but this was low season and there were few tourists (and no migrant birds). The road that had been re-paved from the Kudawa ticket office up to the entrance to the core zone entrance was nearly complete and opened for the first time. The impact of this controversial project appeared less harmful than had been projected by concerned citizens and journalists (See the Daily Mirror on 12 February 2019). Pavement stones had been used on the road and a concrete lining put on the storm drain that runs parallel down the road. There were some trees that had been felled and large patches of Strobilanthes and other shrubs cleared. But these should recover within a season or two. If there is one lesson from Sinharaja’s conservation story in the last 40 years it is that the rainforest system is resilient and is able to recover from human disturbance remarkably well. That doesn’t suggest that we should be complacent about conservation and restoration efforts but we do need to give the system a chance to rebound.
Lenny, Amy and I had visited Martin’s for two nights in February along with our friend Mangala Karaunaratne and his two kids. That trip had been rewarding with good sighting of the Golden Civet Cat (Paradoxurus zeylonensis), Blue Magpies (Urocissa ornata), Hump Nosed Lizard (Lyriocephalus scutatus) and several other species. A few of the images are included here, as they paved the way for a deeper exploration of the area.
The extremely rare Golden Palm Civet Cat (Paradoxurus zeylonensis) at Martin’s lodge. This individual made regular night visits for several months but has stopped coming (as of June 2019). (photo taken in January 2019)
Our highlights with endemics in the western part of Sinharaja in June mainly involved birds. We did look for frogs around Martin’s but were not that successful in this early stage of our mountain traverse. During our three days we had rewarding encounters with a Green Billed Coucal (Centropus chlororhynchos), a pair of Sri Lanka Frogmouths (Batrachostomus moniliger), Blue Magpies (Urocissa ornata) and a Green Pit Viper (Trimeresurus trigonocephalus). Thilak, the very talented independent guide, helped us locate a solitary Chestnut Backed Owlet (Glaucidium castanotum). We did encounter a mixed feeding flock during our first walk to the research station. It included some of the usual endemics but we didn’t have a good opportunity to photograph them. A visitor from Singapore staying at Martin’s was very lucky and saw both the Serendib Scops Owl (Otus thilohoffmanni) and the extremely rare Sri Lanka Bay Owl (Phodilus assimilis) in the same area while we were there.
A male Malabar trogon (Harpactes fasciatus) that was part of a mixed species feeding flock near the Sinharaja research station. Regular readers may recognize that this species is one of my favorite species to encounter and photograph. Previous posts from Silent Valley and the Palani Hills have feature Malabar Trogons and a future post from Thattekad (Kerala)will highlight another exquisite individual.
Sri Lanka Green Pit Viper (Trimeresurus trigonocephalus) near the upper Core Zone entrance on Sinharaja’s west side.
Sri Lanka Blue Magpie (Urocissa ornata) visiting Martin’s lodge, in search of months and insects around tea time before breakfast.
Sri Lanka Keelback (Xenochrophis asperrmus) at the ticket gate of the Kudawa entrance to Sinharaja.
The endemic and diminutive Chesnut Backed Owlet (Glaucidium castanotum) was one that took special help to find. Lenny and I were assisted by Thilak, the independent guide, in our search for owls and he found this individual outside of the park boundaries. Just was we were setting up and getting shots with a 200-500 the skies opened up and we were forced to leave before we wanted to. The light was so low and the bird was at least 20 meters away and I was forced to use a strobe.
(to be continued in Part II/IV)
REFERENCES (for all four parts)
Amphibian Survival Alliance. Web.
De Silva, Anslem. Amphibians of Sri Lanka: A Photographic Guide to Common Frogs, Toad Caecilians. Published by author, 2009. Print.
De Silva, Anslem and Kanishka Ukuwela. A Naturalist’s Guide to the Reptiles of Sri Lanka. Colombo: Vijitha Yapa Publishing, 2017. Print.
Gunatilleke, C.V.S. A Nature Guide to the World’s End Trail, Horton Plains. Colombo: Department of Wildlife Conservation, 2007. Print.
Gunatilleke, I.A.U.N, and C.V.S. Gunatilleke and M.A.A. Dilhan. “Plant Biogeography and Conservation of the South Western Hill Forests of Sri Lanka.” The Raffles Bulletin of Zoology, 2005. No. 12 9-22. Web.
Handunnetti, Dilrukshi. “How India’s shrub frogs crossed a bridge to Sri Lanka – and changed forever.” Mongabay. 1 May 2019. Web.
Kotagama, Sarath and Gamini Ratnavira. An Illustrated Guide to the Birds of Sri Lanka. Colombo: FOGSL, 2010. Print.
Meegaskumbura, Madhava et al. “Conservation and biogeography of threatened Amphibians of Eastern Sinharaja.” Froglog. Issue 100. January 2012. Web.
Meegaskumbura, Madhava et al. “Diversification of shrub frogs (Rhacophoridae, Pseudophilautus) in Sri Lanka-Timing and geographic context.” Molecular Phylogenetics and Evolution. 2019. Web.
Pethiyagoda, Rohan. Horton Plains: Sri Lanka’s Cloud Forest National Park. Colombo: WHT, 2013. Print.
Protected Planet. Sri Lanka PA Boundaries. August 2019.
Senevirathna, Ishanda. The Peeping Frogs of Nuwara Eliya. Colombo: Jetwings, 2018. Print.
Somaweera, Ruchira and Nilusha Somaweera. Lizards of Sri Lanka. A Colour Guide with Field Keys. Frankfurt: Edition Chimaira, 2009. Print.
MAP OF THE JOURNEY
