- Popular Article2014Marmot in mealsSAEVUSDownload
PDF, 451 KB
Talks about dog depredation in the snow leopard habitat.
- Journal Article2014Multi-scale factors influencing human attitudes towards snow leopards and wolves.Conservation Biology DOI: 10.1111/cobi.12320
- Journal Article2014Vigorous Dynamics Underlie a Stable Population of the Endangered Snow Leopard Panthera uncia in Tost Mountains, South Gobi, MongoliaPLoS One. DOI: 10.1371/journal.pone.0101319
- Journal Article2014Bats in Indian coffee plantations: doing more good than harm?Current Science 107: 1958-1960.Download
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Many bat species occur in Indian coffee plantations and despite sporadic reports of damage to commercial coffee crops, the literature shows little evidence for these claims. Measures that have been proposed to ‘control’ fruit bats are likely to be ineffective and even counter-productive. Instead, insect-eating bats should be encouraged by planters as they help control herbivorous and disease-carrying insects, while fruit bats pollinate flowers and disperse seeds of many useful plants and shade tree species. More research is needed to quantify any crop damage caused by bats and to look for sustainable solutions where necessary.
PDF also available here: http://www.currentscience.ac.in/Volumes/107/12/1958.pdf
- Popular Article2014இலை வெட்டி மர்மம். (On Leafcutter Bee)தி இந்து நாளிதழ். The Hindu Tamil News Daily. 2nd September 2014.
Jeganathan, P. (2014). இலை வெட்டி மர்மம் -தி இந்து நாளிதழ் உயிர்மூச்சு இணைப்பில், ‘இயற்கையின் வாசலில்’ தொடர்எண் – 9. 2nd September 2014. Ilaivetti Marmam– Iyarkayin Vaasalil ArticleSeries No.9 (On Leafcutter Bee). The Hindu Tamil News Daily. 2nd September 2014.
- Popular Article2014இலையில்லை, நாம் இல்லை. (On Leaves and why are young leaves are red)தி இந்து நாளிதழ். The Hindu Tamil News Daily. 21st October 2014.
Jeganathan, P. (2014). இலையில்லை, நாம் இல்லை - தி இந்து நாளிதழ் உயிர்மூச்சு இணைப்பில், ‘இயற்கையின் வாசலில்’ தொடர் எண் – 16. 21st October 2014. Ilaiyillai Namillai – Iyarkayin Vaasalil ArticleSeries No.16 (On Leaves and why are young leaves are red). The Hindu Tamil News Daily. 21st October 2014.
PDF, 6.79 MB
White-cheeked Barbet, Coppersmith Barbet, Green Plumage, Stout Beaks
PDF, 2.25 MB
Colour Morphs, Forests, Grasslands, Chital, Barking Deer, Rodents, Domestic Livestock, Stray Dogs, Tamil
- Poster2014Malabar Spiny DoormouseDownload
PDF, 2.44 MB
Rodent, Nocturnal Species, Forage, Lianas, Tamil
- Popular Article2014விசிறிவாலியின் நடன தரிசனம். (On Yellow-bellied Fantail and other fantails of India)தி இந்து நாளிதழ். The Hindu Tamil News Daily. 19th August 2014.
Jeganathan, P. (2014). விசிறி வாலியின் நடன தரிசனம் - தி இந்து நாளிதழ் உயிர்மூச்சு இணைப்பில், ‘இயற்கையின்வாசலில்’தொடர்எண் – 7. 19th August 2014. Visirivaliyin Nadana Darisanam– Iyarkayin Vaasalil ArticleSeries No.7 (On Yellow-bellied Fantail and other fantails of India). The Hindu Tamil News Daily. 19th August 2014.
- Journal Article2014The response of birds and mixed-species bird flocks to human-modified landscapes in Sri Lanka and southern IndiaForest Ecology and Management 329: 384–392Download
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While there is no substitute for undisturbed forest, secondary forests and agroforests are increasingly common in tropical areas and may be critical to conservation plans. We compared the diversity and abundance of birds and the characteristics of mixed-species bird flocks in forests inside protected reserves to ‘‘buffer’’ areas, consisting of degraded forests and non-native timber plantations at reserve boundaries, and to agricultural areas. We monitored a network of 57 transects placed over an altitudinal gradient (90–2180 masl) in Sri Lanka and southern India, collecting 398 complete flock observations and 35,686 observations of birds inside and outside of flocks over two years. Flocks were rarely found in agri- cultural areas. However, the density of flocks in buffer areas was similar to that in forests, although buffer flocks were smaller in average flock size and differed significantly in composition, as measured by the proportion of species that were classified, from the literature, as forest interior or open-landscape species. While flock composition was distinct between agricultural, buffer and forest areas, the differences in the composition of flocks was not as great as the differences between the overall communities in these different habitats. Considering buffer transects alone, pine plantations retained fewer forest interior species in flocks than did forests, and small areas of agriculture and abandoned agriculture attracted open-landscape species. Though clearly not equivalent to protected forests, degraded forests and agroforests in buffer areas still hold some conservation value, with forest species found particularly in mixed-species flocks in these human-modified habitats.
- Popular Article2014How corals got their colourThe Hindu in School, 29 October
- Popular Article2014Perils of oil palmNewslink (Aizawl), 20 August 2014, page 2.
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Cultivated Vanilla, Lady's Slipper Orchids, Epiphytes
- Poster2014Shola GrasslandsDownload
JPG, 776 KB
Shola, Mosses, Epiphytes, Wild Balsams, Kurinji, Rhodendron, Orchids, Nilgiri Tahr, Nilgiri Pipit, White-bellied Shortwing, Tamil
- Poster2014Decomposition and Nutrient CyclingDownload
PDF, 3.73 MB
Beetles, Termites, Earthworms, Bacteria, Fungi, Tamil
- Journal Article2014Seagrasses in the age of sea turtle conservation and shark overfishingFrontiers in Marine Science 1:28. doi: 10.3389/fmars. 2014.00028.Download
PDF, 1.95 MB
Efforts to conserve globally declining herbivorous green sea turtles have resulted in promising growth of some populations. These trends could significantly impact critical ecosystem services provided by seagrass meadows on which turtles feed. Expanding turtle populations could improve seagrass ecosystem health by removing seagrass biomass and preventing of the formation of sediment anoxia. However, overfishing of large sharks, the primary green turtle predators, could facilitate turtle populations growing beyond historical sizes and trigger detrimental ecosystem impacts mirroring those on land when top predators were extirpated. Experimental data from multiple ocean basins suggest that increasing turtle populations can negatively impact seagrasses, including triggering virtual ecosystem collapse. Impacts of large turtle populations on seagrasses are reduced in the presence of intact shark populations. Healthy populations of sharks and turtles, therefore, are likely vital to restoring or maintaining seagrass ecosystem structure, function, and their value in supporting fisheries and as a carbon sink.
- Popular Article2014Nitya in the rainforestThe Hindu in School, 16 July
- Journal Article2014Acoustic identification of bats in the southern Western Ghats, IndiaActa Chiropterologica 16: 213–222Download
PDF, 347 KB
Bats play crucial roles in ecosystems, are increasingly used as bio-indicators and are an important component of tropical diversity. Ecological studies and conservation-oriented monitoring of bats in the tropics benefit from published libraries of echolocation calls, which are not readily available for many tropical ecosystems. Here, we present the echolocation calls of 15 species from the Valparai plateau in the Anamalai Hills, southern Western Ghats of India: three rhinolophids (Rhinolophus beddomei, R. rouxii (indorouxii), R. lepidus), one hipposiderid (Hipposideros pomona), nine vespertilionids (Barbastella leucomelas darjelingensis, Hesperoptenus tickelli, Miniopterus fuliginosus, M. pusillus, Myotis horsfieldii, M. montivagus, Pipistrellus ceylonicus, Scotophilus heathii, S. kuhlii), one pteropodid (Rousettus leschenaultii) and one megadermatid (Megaderma spasma). Discriminant function analyses using leave-one-out cross validation classified bats producing calls with a strong constant frequency (CF) component with 100% success and bats producing frequency modulated (FM) calls with 90% success. For five species, we report their echolocation calls for the first time, and we present call frequencies for some species that differ from those published from other parts of the species’ ranges. This exemplifies the need for more local call libraries from tropical regions to be collected and published in order to record endemic species and accurately identify species whose calls vary biogeographically.
PDF also available here: http://dx.doi.org/10.3161/150811014X683408
- Popular Article2014பச்சைநிறமே,மரகதப்பச்சைநிறமே! (On Stream Glory Damselfly and streams of Western Ghats).தி இந்து நாளிதழ். The Hindu Tamil News Daily. 15th July 2014.
Jeganathan, P. (2014).பச்சைநிறமே, மரகதப்பச்சைநிறமே! - திஇந்துநாளிதழ்உயிர்மூச்சுஇணைப்பில், ‘இயற்கையின்வாசலில்’தொடர்எண் – 2. 15th July 2014. Pachai Nirame, Maragatha Pachai Nirame! – Iyarkayin Vaasalil ArticleSeries No.2 (On Stream Glory Damselfly and streams of Western Ghats). The Hindu Tamil News Daily. 15th July 2014. (The Hindu link here and personal blog link here).