- Popular Article2012தட்டான் பார்க்கலாம் வாங்க (Lets watch Odonates)துளிர். ஜனவரி 2012. பக்கம் 16-18 / Thulir. Science monthly magazine for Kids. January Pp 7-10
தட்டான்பார்க்கலாம்வாங்க.துளிர். ஜனவரி 2012. பக்கம் 16-18. [Jeganathan, P. (2012).Thattan Pakkalam Vanga.Thulir. Science monthly magazine for Kids. January Pp 7-10(Lets watch Odonates)]
- Popular Article2012சின்னஞ்சிறுகுருவே…(On Ants)புதிய தலைமுறை. 26ஜூலை 2012. Puthiya Thalaimurai. 26th July 2012.
- Popular Article2012The fading of an invisible mapThe Hindu, February 11th, Magazine Section
- Popular Article2012As the crow flies…The Hindu in School, 25 April
Jeganathan, P. (2012). As the crow flies… The Hindu in School, 25April.
- Popular Article2012Dugongs, mermaids of the seaThe Hindu in School, 26 September
- Popular Article2012A home for the house sparrowThe Hindu in School, 18 April
Jeganathan, P. (2012). A home for the house sparrow. The Hindu in School, 18 April.
- Popular Article2012A thousand leopards in the SeaThe Hindu in School, 29 September
- Journal Article2012Conservation needs of the Coconut Crab (Birgus latro) on the Nicobar Islands, IndiaOryx, 46: 175-178.Download
PDF, 139 KB
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.
- Popular Article2012Trans-Himalaya: In the shadows of a giantCare4Nature
- Journal Article2012Methodological, temporal and spatial factors affecting modelled occupancy of resident birds in the perennially cultivated landscape of Uttar Pradesh, IndiaLandscape Ecology 27: 59-71. doi:10.1007/s10980-011-9666-3.
Biodiversity persistence in non-woody tropical farmlands is poorly explored, and multispecies assessments with robust landscape-scale designs are sparse. Modeled species occupancy in agricultural mosaics is affected by multiple factors including survey methods (convenience-based versus systematic), landscape-scale agriculture-related variables, and extent of remnant habitat. Changes in seasonal crops can additionally alter landscape and habitat conditions thereby influencing species occupancy. We investigated how these factors affect modeled occupancy of 56 resident bird species using a landscape-scale multi-season occupancy framework across 24 intensively cultivated and human-dominated districts in Uttar Pradesh state, north India. Convenience-based roadside observations provided considerable differences in occupancy estimates and associations with remnant habitat and intensity of cultivation relative to systematic transect counts, and appeared to bias results to roadside conditions. Modeled occupancy of only open-area species improved with increasing intensity of cultivation, while remnant habitat improved modeled occupancy of scrubland, wetland and woodland species. Strong seasonal differences in occupancy were apparent for most species across all habitat guilds. Further habitat loss will be most detrimental to resident scrubland, wetland and woodland species. Uttar Pradesh’s agricultural landscape has a high conservation value, but will require a landscape-level approach to maintain the observed high species richness. Obtaining ecological information from unexplored landscapes using robust landscape-scale surveys offers substantial advantages to understand factors affecting species occupancy, and is necessary for efficient conservation planning.
- Popular Article2012Of tamarind and toleranceThe Hindu Magazine, 17 June 2012, page 4.
Link to this article here.
- Popular Article2012No mermaid fairytaleDown to Earth, August issue
- Popular Article2012காணாமல் போகும் சாலையோர உலகம் (On disappearing roadside trees)Puthiya Thalaimurai, Tamil Weekly Magazine, 30 August
காணாமல் போகும் சாலையோர உலகம். காக்கைக் குருவி எங்கள் ஜாதி தொடர்-8. புதிய தலைமுறை. 30ஆகஸ்டு 2012. [Jeganathan, P. (2012).Kanamal Pogum Salaiyora Ulagam. Kakkai Kuruvi Engal Jathi-Series, Article No.8 Puthiya Thalaimurai. 30th August 2012. (On disappearing roadside trees)]
- Popular Article2011Elusive Malabar civetDeccan Herald Spectrum, 25 January 2011, page 4.Download
PDF, 190 KB
Have we really lost another mammal species from India? If not, what has become of the Malabar civet? Intrigued, Divya Mudappa sets out to look for the species in the Western Ghats along with NIAS researcher Nandini, only to find the Indian civet. The Malabar civet, she says, is rare in museum collections too, and even a bad photograph of a wild Malabar civet would be better than none at all.
Available here: http://www.deccanherald.com/content/131706/elusive-malabar-civet.html
- Report2011Long-term hornbill nest and roost monitoring in Pakke Wildlife Sanctuary and Tiger Reserve (2003-2010).Unpublished Report. Submitted to Arunachal Pradesh Forest Department, Itanagar, Arunachal Pradesh, November 2011.
- Journal Article2011Moisture and nutrients determine the distribution and richness of India’s large herbivore species assemblageBasic and Applied Ecology 12(7): 634-642Download
PDF, 346 KB
The goal of this study was to test whether body-mass based foraging principles, guided by plant available moisture (PAM) and plant available nutrients (PAN), could explain large mammalian herbivore species distribution and richness in India. We tested (1) whether the occurrence of larger-bodied herbivore species increases with PAM, but is independent of PAN, (2) whether the occurrence of smaller-bodied herbivore species decreases with PAM, but increases with PAN, and (3) whether herbivore species richness is highest in areas with intermediate PAM and high PAN. We analyzed the distribution and richness of the 16 large (>10 kg) herbivore species found in sub-Himalayan mainland India. Since the distributions of large herbivores in India have been altered by historic human activity, we only used India's largest 76 protected areas as data points, with respect to PAM (log10(rainfall/potential evapotranspiration)), PAN (soil cation exchange capacity), elevation, tree cover, and fire frequency. Using regression and null models to analyze the data, we found positive relations between PAM and the occurrences of the larger-bodied species (elephant and gaur), and negative relations between PAM and the occurrences of smaller-bodied species (chinkara, four-horned antelope and blackbuck). We also found positive relations between the occurrence of the smaller-bodied species and PAN. Large herbivore species richness in India is highest in Kanha and Indravati, areas with high PAN and intermediate PAM. We found that elevation, tree cover and fire frequency were insignificant predictors of herbivore species richness, although elevation and tree cover explained the distribution of a few species. Based on our null model analyses results, we conclude that moisture and soil nutrients are important in determining large herbivore species distribution and richness in sub-Himalayan India.
- Poster2011Important Plants of the Nilgiri Rangessupported by Whitley Fund For NatureDownload
PDF, 18.4 MB
Nilgiri Biosphere Reserve, Wild Balsams,Impatiens, Nilgiri Wood Orchid, Calanthe Triplicata, Anaphalis Neelgheryana, Eulalia Phaeothrix, Disporum Leschenaulitanum, Cyathea milgiriensis, Hedyotis Verticillaris, Impatiens Levingei, Impatiens Scapiflora, Impatiens Acaulis, Nothapodytes Nimmoniana
- Journal Article2011Less than wild? Commensal primates and wildlife conservationJournal of Biosciences 36: 749-753
- Journal Article2011Agricultural intensification, rainfall patterns, and large waterbird breeding success in the extensively cultivated landscape of Uttar Pradesh, IndiaBiological Conservation 144: 3055-3063. doi:10.1016/j.biocon.2011.09.012
In countries with high human populations, using agricultural areas as multifunctional systems to produce food for humans and retain wildlife may be an efficient conservation strategy for many species. Inclusion of natural habitat and species requirements on agricultural landscapes explicitly into planning processes are precluded by lack of information on drivers of species persistence. Climate change is an additional emerging complexity, and adaptation plans for agricultural landscapes are biased towards intensification to secure long-range food production. I examine the conservation potential of an agricultural landscape in two districts of Uttar Pradesh, north India where agricultural intensification and altered rainfall patterns are predicted to occur. I assess stressors affecting breeding success over eight years of two large waterbirds of conservation concern – Sarus Cranes and Black-necked Storks. Both species had high breeding success that improved with total rainfall and more wetlands in breeding territories. Agricultural and township expansions deteriorated territory quality and reduced breeding success. Sarus Crane populations were predicted to decline relatively rapidly if development activities continued to displace breeding pairs. Black-necked Storks appeared resilient over the long-term notwithstanding reduced breeding success in low-rainfall years. Waterbird nesting habitats (wetlands and trees) were retained in Uttar Pradesh as community lands by villages and by state government via legal provisions suggesting the utility of multiple conservation approaches. Incorporating species requirements explicitly, alongside traditional land use practices conducive for habitat conservation, into adaptation planning and conservation policy will be necessary to retain long-term multifunctionality of such agricultural landscapes.
- Report2011Framing ecologically sound policy on linear intrusions affecting wildlife habitats: Background paper for the National Board for Wildlife, Ministry of Environment and Forest, India.
PDF available at iMinistry of Environment and Forest, India, website. Click here to download.