- Journal Article2018Herpetofaunal survey in rainforest remnants of the Western Ghats, IndiaThe Herpetological Bulletin 146: 8-17.Download
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We undertook amphibian and reptile surveys in six rainforest remnants of the Anamalai Hills in the Western Ghats, India. Over a two-month period, 36 species of herpetofauna were recorded from these remnants, including one species of caecilian, 19 frog species, 8 lizard species and 8 species of snake. Six species were either critically endangered or endangered. We also recorded one species of frog (Nyctibatrachus acanthodermis) outside of its type locality for the first time since its original description. The study demonstrated the presence of several threatened species of herpetofauna in these small forest remnants, the protection and restoration of which are important for the conservation of biodiversity in the Western Ghats.
- Journal Article2018Physiological stress responses in wild Asian elephants Elephas maximus in a human-dominated landscape in the Western Ghats, southern IndiaGeneral and Comparative EndocrinologyDownload
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Increasing anthropogenic pressures on forests, especially in the tropical regions of the world, have restricted several large mammalian species such as the Asian elephant to fragmented habitats within human-dominated landscapes. In this study, we assessed the effects of an anthropogenic landscape and its associated conflict with humans on the physiological stress responses displayed by Asian elephants in the Anamalai Hills of the Western Ghats mountains in south India. We have quantified faecal glucocorticoid metabolite (FGM) concentrations in focal individual elephants within and across herds, inhabiting both anthropogenic and natural habitats, and evaluated their physiological responses to different socio-ecological situations between November 2013 and April 2014. Physiological stress responses varied significantly among the tested elephant age- and sex categories but not across different types of social organisation. Adults generally showed higher FGM concentrations, even in the absence of stressors, than did any other age category. Males also appeared to have higher stress responses than did females. Although there was no significant variation in mean stress levels between elephants on the plateau in the absence of human interactions and those in adjacent, relatively undisturbed forest habitats, FGM concentrations increased significantly for adult and subadult individuals as well as for calves following drives, during which elephants were driven off aggressively by people. Our study emphasises the general importance of understanding individual variation in physiology and behaviour within a population of a seriously threatened mammalian species, the Asian elephant, and specifically highlights the need for long-term monitoring of the stress physiology and behavioural responses of individual elephants across both human-dominated and natural landscapes. Such studies would not only provide comprehensive insights into the adaptive biology of elephants in changing ecological regimes but also aid in the development of effective management and conservation strategies for endangered populations of the species.
- Popular Article2018Kolap Paravaigal கோலப் பறவைகள்The Hindu Tamil News Daily, Uyirmoochu Supplement. 27th January
Jeganathan, P. (2018). Kolap Paravaigal (On birds in Pongal Kolam (Rangoli) in Tamil Nadu). The Hindu Tamil News Daily, Uyirmoochu Supplement. 27th January 2018.Link here.
- Popular Article2018Paravai Thangigal பறவைத் தாங்கிகள்The Hindu Tamil News Daily, Uyirmoochu Supplement. 17th February 2018
Jeganathan, P. (2018). Paravai Thangigal (On natural and artificial bird perches). The Hindu Tamil News Daily, Uyirmoochu Supplement. 17th February 2018.Link here.
- Popular Article2018Nadiyai Nadi நாடியை நாடிThe Hindu Tamil News Daily, Uyirmoochu Supplement. 8th September 2018.
Jeganathan, P. (2018). Nadiyai Nadi (On watching Lesser Noddy in Tamil Nadu). The Hindu Tamil News Daily, Uyirmoochu Supplement. 8th September 2018.Link here.
- Journal Article2018Understanding perceptions of people towards lion-tailed macaques in a fragmented landscape of the Anamalai Hills, Western Ghats, IndiaPrimate Conservation 32: 11 pp.Download
PDF, 2.24 MB
The fragmentation of the rainforests of India’s Western Ghats mountains has left the endemic lion-tailed macaque sur- viving in numerous forest patches in a mosaic of commercial tea and coffee plantations. On the Valparai Plateau, Anamalai Hills, some macaque groups have evidently altered their behavior, becoming habituated to people, suffering from frequent roadkill, and facing problems related to people feeding them and their use of open waste dumps. We carried out a questionnaire survey around three rainforest fragments (Puthuthottam, Korangumudi, Old Valparai) and the town of Valparai to understand people’s percep- tions towards macaques, and to identify appropriate conflict-mitigation measures. Macaques near Korangumudi and Old Valparai rarely ventured near residences, and most people were unaware of their presence. Respondents in and around Puthuthottam were aware of the macaques, and most (68%) had negative perceptions of them because the macaques often visited houses in the area. Most respondents (87%) believed that macaques visited houses in search of food and garbage, and 84% reported that macaques were doing this only over the last 10 years. Housing conditions influenced people's perceptions: people living in tiled-roof houses that were vulnerable to incursions by the macaques had higher negative perceptions (84.5%) compared to people living in asbestos-roof and concrete structures. To reduce negative interactions with people and promote harmonious human-macaque co-existence, we suggest implementing a combination of measures that would involve plantation management, conservation orga- nizations, and the state forest and municipal authorities. The measures include cost-effective monkey-proofing of houses, regular garbage collection, preventing open waste disposal and the feeding of macaques, mitigating the effects of roads, and promoting people’s awareness, rainforest restoration, and the use of native shade trees in plantations.
- Report2018Population assessment of the Nilgiri tahr (Nilgiritragus hylocrius) using the Double-observer Survey method in the Anamalai Tiger ReserveTechnical Report, Nature Conservation Foundation, Mysore, India
- Journal Article2018Breeding biology of Great Hornbill Buceros bicornis in tropical rainforest and human-modified plantation landscape in Western Ghats, IndiaOrnithological Science, 17:205-216Download
PDF, 356 KB
Loss of mature tropical forests to agricultural expansion often creates landscapes with forest fragments embedded within a matrix of human-modified habitats and land uses. Such habitat fragmentation may be detrimental to species with specialized habitat and foraging requirements and their ability to persist in such landscapes may depend on their adaptability to habitat modification. Great Hornbills Buceros bicornis, among the largest birds in Asian tropical rainforests, depend on large trees for nesting and a diverse array of patchily distributed fruiting trees. In the human-modified landscape of the Anamalai Hills, India, we compared the breeding biology and nesting behaviour of Great Hornbills in contiguous rainforest (N=3 nests) and in modified habitat consisting of coffee plantations and rainforest fragments (N=5 nests). The nesting cycle of seven of the eight nests monitored varied between 114 and 130 days. Nest provisioning behaviour was similar in contiguous forest and modified habitat in terms of visitation and food delivery rates, but visitation tended to be higher and food delivery rate lower during the nestling phase than during incubation. As expected, tree density and native food plant diversity were lower in modified habitat than in continuous forest. The diversity of food provisioned was lower in modified habitat with a 57.5% dietary overlap with contiguous forest. Hornbills in the modified habitat of coffee plantations used non-native tree species for nesting and foraging, indicating their adaptability to modified landscapes.
- Journal Article2018Seasonal variation in wildlife roadkills in plantations and tropical rainforest in the Anamalai Hills, Western Ghats, IndiaCurrent Science. 114(3): 619-626.
- Journal Article2018Whose habitat is it anyway? Role of natural and anthropogenic habitats in conservation of charismatic speciesTropical Conservation Science 11: 1-5.Download
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Developmental activities have been one of the major drivers of conversion of natural forest areas into mosaics of forest fragments, agriculture, and plantations, threatening the existence of wildlife species in such altered landscapes. Most conservation research and actions are protected area centric and seldom addresses the importance of landscape matrices around these protected areas in providing habitats to a wide range of species. In this article, we bring out the crucial role of natural and anthropogenic habitats for the existence of three charismatic species, namely, Asian elephants, leopard, and lion-tailed macaques. The larger public perception of where the animals should be and where the animals actually are is also discussed. We emphasize that, while habitat generalists often adapt behaviorally and ecologically to modified landscapes, habitat specialists, such as the lion-tailed macaques could find survival harder, with increasing anthropogenic pressures and loss of their habitats.
- Book2018Pillars of Life: Magnificent Trees of the Western GhatsNature Conservation Foundation, Mysore.
For millions of years, the forests of the Western Ghats mountains have been home to a host of extraordinary trees. These range from the peculiar conifer, Nageia, whose family origins can be traced back to the age of the dinosaurs, to the grand trees in the rudraksh family, to the jack and fig trees that occupy a familiar presence in India’s forests and countryside. This book showcases thirty remarkable tree species through beautiful illustrations and artwork. It conveys the wonder arising from the beauty, the diversity, the individuality, and magnificence of trees in the Western Ghats, and evokes a greater sensitivity to the diverse values and enrichment that trees bring to our lives.
Foreword by Pradip Krishen
Botanical Illustrations by Nirupa Rao
Sketches by Sartaj Ghuman
Available here: https://www.instamojo.com/NCF/pillars-of-life/
- Book Chapter2018Expanding nature conservation: considering wide landscapes and deep histories.Pages 249-267 in G. Cederlöf and M. Rangarajan (editors), 'At Nature's Edge: The Global Present and Long-Term History,' Oxford University Press, New Delhi. 331 pp.
- Book2017Birds of Cauvery and MM Hills Wildlife Sanctuary (Kannada) - Pocket guideProduced under the Integrated Tiger Habitat Conservation Programme supported by IUCN and KfWDownload
PDF, 1.04 MB
A pocket guide to common birds of Cauvery and MM hills Wildlife Sanctuaries in a handy, foldable format. Illustrations are available on 137 species, with winter migrants, marked separately. This pocket guide has 10 panels with bird illustrations laminated for protection and easy to use in the field. The pocket guide is in Kannada, with bird names listed in both Kannada and English.
Supporting conservation outreach in India, this guide has been produced as part of Integrated Tiger Habitat Conservation Programme supported by IUCN and KfW. These pocket guides are being distributed free of cost to schools, community members, social leaders and others in the project landscape.
- Journal Article2017Successional status, seed dispersal mode and overstorey species influence tree regeneration in tropical rain-forest fragments in Western Ghats, IndiaJournal of Tropical Ecology 33: 270-284. DOI: 10.1017/S0266467417000219
The effects of fragmentation and overstorey tree diversity on tree regeneration were assessed in tropical rain forests of the Western Ghats, India. Ninety plots were sampled for saplings (1–5 cm diameter at breast height (dbh); 5×5-m plots) and overstorey trees (>9.55 cm dbh; 20×20-m plots) within two fragments (32 ha and 18 ha) and two continuous forests. We tested the hypotheses that fragmentation and expected seed-dispersal declines (1) reduce sapling densities and species richness of all species and old-growth species, and increase recruitment of early-successional species, (2) reduce the prevalence of dispersed recruits and (3) increase influence of local overstorey on sapling densities and richness. Continuous forests and fragments had similar sapling densities and species richness overall, but density and richness of old-growth species declined by 62% and 48%, respectively, in fragments. Fragments had 39% lower densities and 24% lower richness of immigrant saplings (presumed dispersed into sites as conspecific adults were absent nearby), and immigrant densities of old-growth bird-dispersed species declined by 79%. Sapling species richness (overall and old-growth) increased with overstorey species richness in fragments, but was unrelated to overstorey richness in continuous forests. Our results show that while forest fragments retain significant sapling diversity, losses of immigrant recruits and increased overstorey influence strengthen barriers to natural regeneration of old-growth tropical rain forests.
- Dataset2017Data from: Successional status, seed dispersal mode and overstorey species influence tree regeneration in tropical rain-forest fragments in Western Ghats, IndiaDryad Digital Repository. https://doi.org/10.5061/dryad.vd0nn.2
Dataset available from the Dryad Digital Repository:
Osuri AM, Chakravarthy D, Mudappa D, Raman TRS, Ayyappan N, Muthuramkumar S, Parthasarathy N (2017) Successional status, seed dispersal mode and overstorey species influence tree regeneration in tropical rain-forest fragments in Western Ghats, India. Journal of Tropical Ecology 33(4): 270-284. https://doi.org/10.1017/S0266467417000219
- Journal Article2017From intent to action: A case study for the expansion of tiger conservation from southern IndiaGlobal Ecology and Conservation, 9: 11–20Download
PDF, 2.61 MB
To conserve a large, wide-ranging carnivore like the tiger, it is critical not only to maintain populations at key habitat sites, but also to enable the persistence of the species across much larger landscapes. To do this, it is important to establish well-linked habitat networks where sites for survival and reproduction of tigers are complemented by opportunities for dispersal and colonization. On the ground, expanding protection to areas with a potential for tiger recovery still remains the means of operationalizing the landscape approach. Yet, while the gazetting of protected areas is necessary to enable this, it is not sufficient. It is essential to benchmark and monitor the process by which establishment of protected areas must necessarily be followed by management changes that enable a recovery of tigers, their prey and their habitats. In this paper, we report a case study from the Cauvery and Malai Mahadeshwara Hills Wildlife Sanctuaries of southern India, where we document the infrastructural and institutional changes that ensued after an unprecedented expansion of protected areas in this landscape. Further, we establish ecological benchmarks of the abundance and distribution of tigers, the relative abundance of their prey, and the status of their habitats, against which the recovery of tigers in this area of vast conservation potential may be assessed over time.
- Book Review2017Marangal- Ninaivilum Punaivilum: Vanakathukuriya Noolமரங்கள் - நினைவிலும் புனைவிலும்: வணக்கத்துக்குரிய நூல்The Hindu Tamil News Daily, Uyirmoochu Supplement.
Jeganathan, P. (2017). Marangal- Ninaivilum Punaivilum: Vanakathukuriya Nool (Book review on Marangal- Ninaivilum Punaivilum). The Hindu Tamil News Daily, Uyirmoochu Supplement. 29th April 2017.Link here.
- Popular Article2017Sengal Narai darisanamum, aaru mani kuruviyin azaippum. செங்கால் நாரையின் தரிசனமும், ஆறு மணிக்குருவியின் அழைப்பும்The Hindu Tamil Magazine-Sitirai Special issue–April 2017.
Jeganathan, P. (2017). Sengal Narai darisanamum, aaru mani kuruviyin azaippum (On the wildlife and wild places of Villupuram District). The Hindu Tamil Sitirai Malar (சித்திரை மலர்). The Hindu Magazine-Sitirai Special issue–April 2017.
Full article can be seen in this blog here
- Popular Article2017Thamilagathil thenbadum azivin vilimbil ulla paravaigal . தமிழகத்தில் தென்படும் அழிவின் விளம்பில் உள்ள பறவைகள்Manorama Year Book (in Tamil) 2017.
Jeganathan, P. (2017). Thamilagathil thenbadum azivin vilimbil ulla paravaigal (Threatened birds of Tamil Nadu). Manorama Year Book 2018. Malayala Manorama Press, Kottayam – 686 001. December 2017.
- Popular Article2017Oru Paravai Pola Mithakirene. ஒரு பறவை போல மிதக்கிறேனே.The Hindu Tamil News Daily, Uyirmoochu Supplement. 14th January