- Popular Article2012புலியா?பறவையா?எதுஉசத்தி? (An article on another article written by Madhusudan Katti on Warbler vs Tigers)புதிய தலைமுறை. 9ஆகஸ்டு 2012. Puthiya Thalaimurai. 9th August 2012.
புலியா? பறவையா? எதுஉசத்தி?. காக்கைக்குருவிஎங்கள்ஜாதிதொடர்-5. புதியதலைமுறை. 9ஆகஸ்டு 2012. [Jeganathan, P. (2012).Puliya? Paravaiya? Ethu Usathi?. Kakkai Kuruvi Engal Jathi-Series, Article No.5 Puthiya Thalaimurai. 9th August 2012. (An article on another article written by Madhusudan Katti on Warbler vs Tigers)]
- Popular Article2012காட்டு நீரோடையின் மெல்லிசை மன்னன். (On Malabar Whistling Thrush)புதிய தலைமுறை. 2ஆகஸ்டு 2012 Puthiya Thalaimurai. 2nd August 2012
- Journal Article2012Distance-related thresholds and influence of the 2004 tsunami on damage and recovery patterns of coral reefs in the Nicobar IslandsCurrent Science 102:1199–1205
The earthquake and tsunami of 2004 resulted in the devastation of marine and coastal ecosystems across the Indian Ocean. However, without adequate baseline information it has been difficult to properly gauge its full impact. The reefs of the Nicobar Islands in the Bay of Bengal lie on a path that ranges from 190 to 500 km from Banda Aceh, the epicentre of the 2004 tsunami. In 2008, we recorded benthic damage as a result of the tsunami to reefs off 14 Nicobar Islands across a gradient of distance from the epicentre. A clear pattern was observed in the demographic structure of the most abundant coral genera, Acropora and Porites across the distance gradient. Significantly, for the largest coral individuals of both genera (> 50 cm diameter), there were distinct threshold effects – their abundance declining dramatically in reefs closer than 350 km from the epicentre. Corals between 20 and 50 cm diameter also increased with distance from the epicentre, but in a more linear fashion. Smaller size classes either showed no apparent trend (Acropora) or decreased linearly (Porites) with distance. These gen- era represent very different life-history strategies: Acropora is fast-growing and highly susceptible to a range of disturbances, while Porites typically grows slowly but is resistant to disturbance. The fact that both genera showed similar thresholds indicates that, close to the epicentre, the impact of the earthquake and tsunami was large enough to override any species- specific resistance. Also, algal cover was also much higher than at locations further north, linked to higher coral mortality at these locations. However, the fact that smaller size class coral individuals were rela- tively abundant and even increased close to the ep centre indicates possible paths of reef recovery after the catastrophe.
- Popular Article2012A problem landscape in the Western GhatsHornbill, April-June, 2012 : 4-8
- Journal Article2012Trends in extinction and persistence of diurnal primates in Upper Brahmaputra ValleyOryx 46(2): 308-311Download
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The historical deforestation of the Upper Brahmaputra Valley in the Indian state of Assam has resulted in the transformation of its once-contiguous lowland rainforests into many isolated forest fragments that are still rich in species, including primates. We report the recent history and current status of six diurnal primates in one large (2,098 ha) and three small (, 500 ha) fragments of the Upper Brahmaputra Valley. We censused primates in the small fragments during 2002, 2005, 2009, in the large fragment in 2008, and used other published census data to derive population trends. We also used key informant surveys to obtain historical occurrence data for these populations. Our analyses reveal the recent extinction of some populations and the simultaneous long-term persist- ence of others in these fragments over 16 years. Most populations appeared to have declined in the small fragments but primate abundance has increased signific- antly in the largest fragment over the last decade. Addressing the biomass needs of the local human populations, which appears to drive habitat degradation, and better protection of these forests, will be crucial in ensuring the future survival of this diverse and unique primate assemblage in the last rainforest fragments of the human-dominated Upper Brahmaputra Valley.
- Report2012NCF Annual Report 2012
- Popular Article2012சிட்டுக்குருவிகள் உண்மையிலேயே அழிந்து வருகின்றனவா? (Are House Sparrows really declining? and on citizensparrow results)தினமணி நாளிதழ் – கொண்டாட்டம் இணைப்பில். 22 ஏப்ரல் 2012. Dinamani – Tamil Newspaper. 22nd April 2012.
சிட்டுக் குருவிகள் உண்மையிலேயே அழிந்து வருகின்றனவா? தினமணி நாளிதழ் – கொண்டாட்டம் இணைப்பில். 22 ஏப்ரல் 2012.[Jeganathan, P. (2012). Sittukuruvigal unmayileye azinthu varukindranava? Dinamani – Tamil Newspaper. Date 22nd April 2012 (Are House Sparrows really declining? and on citizensparrow results)]
- Journal Article2012Conservation of the Asian small-clawed otter (Aonyx cinereus) in human-modified landscapes, Western Ghats, IndiaTropical Conservation Science 5: 67-78.Download
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Conservation in human-modified landscapes is important for riparian animals as their habitats extend linearly beyond adjoining protected areas. We examined occupancy and intensity of habitat use of Asian small-clawed otters in coffee and tea plantations and an adjoining protected area in the Western Ghats. We sampled 66 stream segments of 500 m length, using spraints as an indicator of habitat use. Several variables characterising the stream and shoreline were also measured. Occupancy, corrected for detection of spraints, was >0.75 in all three land use types, indicating widespread use of the riparian ecosystem in human-modified landscapes. Intensity of habitat use, however, was much lower in tea (2.08 spraints/500 m) and coffee (2.42) plantations than in the protected area (3.86). Using GLMs we identified the abundance of potential refuges (such as boulders and fallen trees), which was greater in the protected area, as the major factor influencing intensity of habitat use. Shoreline diversity, which was lowest in the tea plantation, might also be another factor. The retention of much of the riparian vegetation and the presence of forest fragments which provide refuges have led to wide occupancy of the tea and coffee plantations although with less intensive use. Sand mining, fishing and infrequent poaching might be other reasons for the relatively low use of human-modified landscape. This study highlights the need to retain remnant forests and riparian vegetation, and to control some human activities for integrated management of species like the small-clawed otter in both protected areas and adjoining human-modified habitats.
- Popular Article2012The world of bats: echolocationThe Hindu in School, 9 May
- Popular Article2012Shared parentingHindu Survey of the Environment, July 2012, pp. 88-97.Download
PDF, 8.61 MB
A programme to adopt hornbill nests in Arunachal Pradesh is giving these great birds a chance to survive in Pakke,
- Popular Article2012The fading of an invisible mapThe Hindu, February 11th, Magazine Section
- Popular Article2012Twinkle, twinkle, little batThe Hindu in School 2 May
- Popular Article2012கூடுகட்டவாகுருவி. (On House Sparrows)புதிய தலைமுறை. 19ஜூலை 2012 Puthiya Thalaimurai. 19th July 2012
- Popular Article2012The sheep that isn'tThe Hindu in School, 20 June
- Popular Article2012Expedition North AndamanThe Hindu in School, 12 September
- Popular Article2012Crows, but not quite...The Hindu in School, 4 July
- Popular Article2012Dolphins for the GovernorThe Hindu in School, 22 August
- Popular Article2012No mermaid fairytaleDown to Earth, August issue
- Journal Article2012Conservation needs of the Coconut Crab (Birgus latro) on the Nicobar Islands, IndiaOryx, 46: 175-178.Download
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We describe the distribution of the coconut crab Birgus latro, categorized as Data Deficient on the IUCN Red List, local perspectives towards the species, and its conservation needs on the Nicobar Islands in the eastern Indian Ocean. The species is threatened with extinction across most of its range and in India it is found only on a few islands in the Andaman and Nicobar archipelagoes. We carried out informal discussions with Nicobari commu- nities to examine issues regarding conservation of the species and conducted timed searches in areas where coconut crabs were likely to be found. The discussions revealed that there are social taboos against hunting the coconut crab on most of the Nicobar Islands. However, on some islands these taboos are not being followed and community members may hunt the crab for consumption. Athough the coconut crab is legally protected under the Indian Wildlife Protection Act none of the villagers were aware of this. Of the six islands surveyed we recorded the presence of 17 and 14 crabs on two islands, respectively. On four islands villagers reported the presence of the crab prior to the tsunami of 2004, and on two of these islands the species may now be locally extinct. A small population size and a fragmented distribution in areas of coconut planta- tions suggest that the species is threatened. We recommend monitoring and detailed research on the ecology and genetics of the coconut crab, along with community-based conservation initiatives to conserve the species and its habitat.
- Working Paper2012Beyond the borders: wildlife conservation in landscapes fragmented by plantations crops in IndiaNCF Working Paper 1, Nature Conservation Foundation, Mysore.Download
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In regions of tropical forest, there is now global interest in bringing conservation efforts outside designated protected areas into the mainstream in landscapes with agricultural production and plantations such as of coffee, tea, rubber, and oil palm. Here, we describe the context and challenges of landscape-scale conservation amidst plantations and forests and other tropical ecosystems in India.