- Popular Article2014Surprise sighting in SpitiThe Hindu in School, 6 August
- Journal Article2014Roads emerging as a critical threat to leopards in India?Cat News 60 Spring 2014 (30)Download
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Leopards (Panthera pardus) face severe threat from poaching, loss of habitat and killing in retaliation to conflict. However, in India a new threat appears to be emerging in the form of vehicle accident mortalities. In the past 60 months 23 leopards have been recorded as killed due to road accidents in the southern Indian state of Karnataka alone. When roads overlap with important wildlife habitats, considerable scrutiny and critical conservation planning is urgently required
- Journal Article2014Local and Landscape Correlates of Primate Distribution and Extinction in Upper Brahmaputra ValleyConservation Biology 28(1): 95-106Download
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Habitat fragmentation affects species distribution and abundance, and drives extinctions. Es- calated tropical deforestation and fragmentation have confined many species populations to habitat rem- nants. How worthwhile is it to invest scarce resources in conserving habitat remnants within densely settled production landscapes? Are these fragments fated to lose species anyway? If not, do other ecologi- cal, anthropogenic, and species-related factors mitigate the effect of fragmentation and offer conservation opportunities? We evaluated, using generalized linear models in an information-theoretic framework, the effect of local- and landscape-scale factors on the richness, abundance, distribution, and local extinction of 6 primate species in 42 lowland tropical rainforest fragments of the Upper Brahmaputra Valley, northeastern India. On average, the forest fragments lost at least one species in the last 30 years but retained half their original species complement. Species richness declined as proportion of habitat lost increased but was not significantly affected by fragment size and isolation. The occurrence of western hoolock gibbon (Hoolock hoolock) and capped langur (Trachypithecus pileatus) in fragments was inversely related to their isolation and loss of habitat, respectively. Fragment area determined stump-tailed (Macaca arctoides) and northern pig-tailed macaque occurrence (Macaca leonina). Assamese macaque (Macaca assamensis) distribution was affected negatively by illegal tree felling, and rhesus macaque (Macaca mulatta) abundance increased as habitat heterogeneity increased. Primate extinction in a fragment was primarily governed by the extent of divergence in its food tree species richness from that in contiguous forests. We suggest the conservation value of these fragments is high because collectively they retained the entire original species pool and individually retained half of it, even a century after fragmentation. Given the extensive habitat and species loss, however, these fragments urgently require protection and active ecological restoration to sustain this rich primate assemblage.
- Thesis2014An investigation into the interactions among wild ungulates and livestock in the temperate forests of Kaj-i-nagManipal University, Manipal, Karnataka
- Popular Article2014கோடியக்கரை: விருந்தாளிப் பறவைகளின் உல்லாச விடுதி. (On Point Calimere Wildlife Sanctuary)தி இந்து நாளிதழ். The Hindu Tamil News Daily. 22th July 2014.
Jeganathan, P. (2014). கோடியக்கரை: விருந்தாளிப் பறவைகளின் உல்லாச விடுதி - தி இந்து நாளிதழ் உயிர்மூச்சு இணைப்பில், ‘இயற்கையின்வாசலில்’தொடர் எண் – 3. 22th July 2014. Kodiyakkarai: Virunthalip paravaigalin ullasa viduthi – Iyarkayin Vaasalil ArticleSeries No.3 (On Point Calimere Wildlife Sanctuary). The Hindu Tamil News Daily. 22th July 2014.
- Journal Article2014Photographic records of the Ratel Mellivora capensis from the southern Indian state of KarnatakaSmall Carnivore Conservation, 50, 42-44.
Understanding about the occurrence and distribution of the Ratel Mellivora capensis from the Indian subcontinent is hindered by the animal’s elusive nature. The first photographic evidence of Ratel for the southern Indian state of Karnataka comprises 41 camera-trap records from Cauvery Wildlife Sanctuary. During January–March 2014, Ratels were detected in the sanctuary’s different forest types broadly in proportion to camera-trapping effort therein. A wider occupancy survey, using a range of methods including camera-trapping, would help obtain a better understanding of the distribution of this cryptic species in Karnataka and neighbouring regions.
- Journal Article2014Occurrence of Small-toothed Palm Civet Arctogalidia trivirgata in Dampa Tiger Reserve, Mizoram, North-east IndiaSmall Carnivore Conservation 50: 47-49.Download
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Single Small-toothed Palm Civets Arctogalidia trivirgata were seen and photographed on two consecutive nights in March 2014 in Dampa Tiger Reserve, Mizoram, India. They visited a fruiting tree used also by Masked Palm Civet Paguma larvata and Common Palm Civet Paradoxurus hermaphroditus. The present note describes the observation, adding to the few recent records of A. trivirgata from North-east India. The sighting was close to the location of a 1995 sighting of Stripe-backed Weasel Mustela strigidorsa, another species rarely recorded in the region. We suggest further targeted spotlighting and camera-trap surveys for better documentation of the occurrence and distribution of small carnivores in Dampa.
- Poster2014சிறுத்தையை அறிந்துகொள்வோம்Poster produced in collaboration with Wildlife Conservation Society.Download
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சிறுத்தை-மனிதன் எதிர்கொள்ளலைப் பற்றிய விளக்கச் சுவரிதழ்.
- Poster2014Larval connectivity in Lakshadweep
- Popular Article2014Gardeners of the rainforestSaevus, November 2014, pp. 19-23.
- Poster2014Invertebrates of the Western Ghats - Spiderssupported by Critical Ecosystem Partnership FundDownload
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Spiders, Spinnerets, Arachnura, Giant Wood Spiders
- Popular Article2014Fancy sea fanThe Hindu in School, 24 December
- Poster2014Pigeons and DovesDownload
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Emerald Dove, Laughing Dove, Green Imperial Pigeon, Nilgiri Woodpigeon, Tamil
- Journal Article2014Acoustic identification of bats in the southern Western Ghats, IndiaActa Chiropterologica 16: 213–222Download
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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
- Poster2014Tortoise and TurtlesDownload
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Indian Pond Terrapin, Cochin Forest Cane Turtle, Travancore Tortoise, Tamil
- Poster2014Venomous SnakesDownload
PDF, 20.2 MB
Malabar Pit Viper, Striped Coral Snake, Large-scaled Pit Viper, Hump-nosed Pit Viper, Spectacled Cobra, Common Krait, Rats, Heat-sensitive Pit, Tamil
- Journal Article2014Vigorous dynamics underlie a stable population of the endangered snow leopard Panthera uncia in Tost Mountains, South Gobi, Mongolia 12Plos ONE 9(7): e101319. doi:10.1371/journal.pone.0101319
Population monitoring programmes and estimation of vital rates are key to understanding the mechanisms of population growth, decline or stability, and are important for effective conservation action. We report, for the first time, the population trends and vital rates of the endangered snow leopard based on camera trapping over four years in the Tost Mountains, South Gobi, Mongolia. We used robust design multi-season mark-recapture analysis to estimate the trends in abundance, sex ratio, survival probability and the probability of temporary emigration and immigration for adult and young snow leopards. The snow leopard population remained constant over most of the study period, with no apparent growth (l = 1.08+20.25). Comparison of model results with the ‘‘known population’’ of radio-collared snow leopards suggested high accuracy in our estimates. Although seemingly stable, vigorous underlying dynamics were evident in this population, with the adult sex ratio shifting from being male-biased to female-biased (1.67 to 0.38 males per female) during the study. Adult survival probability was 0.82 (SE+20.08) and that of young was 0.83 (SE+20.15) and 0.77 (SE +20.2) respectively, before and after the age of 2 years. Young snow leopards showed a high probability of temporary emigration and immigration (0.6, SE +20.19 and 0.68, SE +20.32 before and after the age of 2 years) though not the adults (0.02 SE+20.07). While the current female-bias in the population and the number of cubs born each year seemingly render the study population safe, the vigorous dynamics suggests that the situation can change quickly. The reduction in the proportion of male snow leopards may be indicative of continuing anthropogenic pressures. Our work reiterates the importance of monitoring both the abundance and population dynamics of species for effective conservation.
- Poster2014King CobraDownload
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Snakes, Tropical Moist Forests, Monitor Lizards, Other Snakes, Tamil
- Poster2014Spotting Elephant SignsDownload
JPG, 353 KB
Dung, Herd, Inefficient Digestion, Debark, Tuskers, Deciduous Forests, Grewia, Teak
PDF, 9.71 MB
Fishing Spiders, Leucauge, Lynn Spider, Giant Wood Spider, Acusilas