- Popular Article2014Marmot in mealsSAEVUSDownload
PDF, 451 KB
Talks about dog depredation in the snow leopard habitat.
- Popular Article2014Survival of the fittestThe Hindu (Young World), 8 July
- 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.
- Poster2014Plant-Animal InteractionsDownload
PDF, 2.99 MB
Butterflies, Bats, Pollination, Hornbills, Macaques, Fruit Bats, Civets, Kernel
- 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.
PDF, 15.3 MB
Dollarbird, Chack-Chack, Flying Insects, Beetles, Lizards, Tamil
PDF, 32.2 MB
Two-headed Snake, Earthworms, Insect Larvae, Flattened Tail, Tamil
- Journal Article2014Tilting at wildlife: reconsidering human–wildlife conflict2014 Fauna & Flora International, Oryx, 1–4, doi:10.1017/S0030605314000799Download
PDF, 102 KB
Conflicts between people over wildlife are widespread and damaging to both the wildlife and people involved. Such issues are often termed human–wildlife conflicts. We argue that this term is misleading and may exacerbate the problems and hinder resolution. A review of 100 recent articles on human–wildlife conflicts reveals that 97 were between conservation and other human activities, particularly those associated with livelihoods. We suggest that we should distinguish between human–wildlife impacts and human–human conflicts and be explicit about the different interests involved in conflict. Those representing conservation interests should not only seek technical solutions to deal with the impacts but also consider their role and objectives, and focus on strategies likely to deliver long-term solutions for the benefit of biodiversity and the people involved.
- Poster2014Reptiles of the Western Ghatssupported by Critical Ecosystem Partnership FundDownload
PDF, 193 MB
Hemidactylus Sataraensis, Geckoella Deccanensis, Hemidaectylus Prashadi, Cat Skinks(Ristella Beddomei), Hemidaectylus Anamallensis, Cnemaspis, Salea, Calotes Grandisquamis, Kaestlea, Otocryptis Beddomei
- Poster2014Reptiles of the Western Ghats - Dracosupported by Critical Ecosystem Partnership FundDownload
PDF, 6.32 MB
Draco Dussumieri, Dewlaps, Patagium
- Poster2014Tortoise and TurtlesDownload
PDF, 7.04 MB
Indian Pond Terrapin, Cochin Forest Cane Turtle, Travancore Tortoise, Tamil
- Poster2014In The RainforestDownload
PDF, 5.55 MB
Black Eagle, Scarlet Minivet, Indian Giant Squirrel, Great Hornbill, White-bellied Woodpecker, Pompadour Pigeon, White-bellied Blue Flycatcher, Butterfly, Lion-tailed Macaque, Bettle, Southern Green Calotes, Termites, King Cobra, Frog, Damselflies, Fungi, Malabar Whistling Thrush, Mouse Deer, Leopard Cat, Leaf-nosed Bat, Malabar Spiny Doormouse, Brown Palm Civet, Large Brown Flying Squirrel, Fruit Bat, Spot-bellied Eagle Owl
- Poster2014Chital and SambarDownload
JPG, 753 KB
Chital(Spotted Deer), Sambar, Snarling, Leopards, Tigers
- Poster2014Invertebrates of the Western Ghats - Scorpionssupported by Critical Ecosystem Partnership FundDownload
PDF, 4.37 MB
Scorpions, Trichobothria, Pectine, Exoskeleton, Heterometrus
- Journal Article2014Accounting for false positives improves estimates of occupancy from key informant interviewsDiversity and Distributions 20: 223-235Download
PDF, 443 KB
Much research in conservation biogeography is fundamentally dependent on obtaining reliable data on species distributions across space and time. Such data are now increasingly being generated using various types of public surveys. These data are often integrated with occupancy models to evaluate distributional patterns, range dynamics and conservation status of multiple species at broad spatio-temporal scales. Occupancy models have traditionally corrected for imperfect detection due to false negatives while implicitly assuming that false positives do not occur. However, public survey data are also prone to false-positive errors, which when unaccounted for can cause bias in occupancy estimates. We test whether false positives in a dataset collected from public surveys lead to overestimation of species site occupancy and whether estimators that simultaneously account for false-positive and false-negative errors improve occupancy estimates.
Western Ghats, India.
We fit occupancy models that simultaneously account for false positives and negatives to data collected from a large-scale key informant interview survey for 30 species of large vertebrates. We tested their performance against standard occupancy models that account only for false negatives.
Standard occupancy models that correct only for false negatives tended to overestimate species occupancy due to false-positive errors. Occupancy models that simultaneously accounted for false positives and negatives had greater support [lower Akaike's information criterion (AIC)] and, consistent with predictions, generated systematically lower occupancy estimates than standard models. Furthermore, accounting for false positives improved the accuracy of occupancy estimates despite the added complexity to the statistical estimator.
Integrating large-scale public surveys with occupancy modelling approaches is a powerful tool for informing conservation and management. However, in many if not most cases, it will be important to explicitly account for false positives to ensure the reliability of occupancy estimates obtained from public survey datasets such as key informant interviews, volunteer surveys, citizen science programmes, historical archives and acoustic surveys.
- Report2014Hornbill Nest Adoption Programme- 2014 breeding season
- Journal Article2014Genetic diversity and population structure of Lantana camara in India indicates multiple introductions and gene flow.Plant Biology. 16(3): 651-658.Download
PDF, 278 KB
Lantana camara is a highly invasive plant, which has spread over 60 countries and island groups of Asia, Africa and Australia. In India, it was introduced in the early nineteenth century, since when it has expanded and gradually established itself in almost every available ecosystem. We investigated the genetic diversity and population structure of this plant in India in order to understand its introduction, subsequent range expansion and gene flow. A total of 179 individuals were sequenced at three chloroplast loci and 218 individuals were genotyped for six nuclear microsatellites. Both chloroplasts (nine haplotypes) and microsatellites (83 alleles) showed high genetic diversity. Besides, each type of marker confirmed the presence of private polymorphism. We uncovered low to medium population structure in both markers, and found a faint signal of isolation by distance with microsatellites. Bayesian clustering analyses revealed multiple divergent genetic clusters. Taken together, these findings (i.e. high genetic diversity with private alleles and multiple genetic clusters) suggest that Lantana was introduced multiple times and gradually underwent spatial expansion with recurrent gene flow.
- 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
PDF, 705 KB
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 Article2014மக்கள் விஞ்ஞானிகளே, வாருங்கள்! (On various citizen science project initiatives in India)25th November 2014.
Jeganathan, P. (2014). மக்கள் விஞ்ஞானிகளே, வாருங்கள்! - தி இந்து நாளிதழ் உயிர்மூச்சு இணைப்பில், ‘இயற்கையின் வாசலில்’ தொடர் எண் – 21. 25th November 2014. Makkal Vingnanigale Varungal!– Iyarkayin Vaasalil ArticleSeries No.21 (On various citizen science project initiatives in India). The Hindu Tamil News Daily. 25th November 2014.
- Poster2014Dhole or Wild DogDownload
PDF, 6.92 MB
Coordinated Hunts, Sambar, Leopard, Chital, Tamil