- Popular Article2012Bird Migrations: Adaptations and threatsThe Hindu in School, 31 October
- Popular Article2012Attack of the killer fungusThe Hindu in School, 1 August
- Popular Article2012Gowa of Ladakh!The Hindu in School, 11 July
- Popular Article2012Crows, but not quite...The Hindu in School, 4 July
- Popular Article2012The sheep that isn'tThe Hindu in School, 20 June
- Popular Article2012Twinkle, twinkle, little batThe Hindu in School 2 May
- 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.
- Report2012NCF Annual Report 2012
- Popular Article2012சிட்டுக்குருவிகள் உண்மையிலேயே அழிந்து வருகின்றனவா? (Are House Sparrows really declining? and on citizensparrow results)தினமணி நாளிதழ் – கொண்டாட்டம் இணைப்பில். 22 ஏப்ரல் 2012. Dinamani – Tamil Newspaper. 22nd April 2012.
சிட்டுக் குருவிகள் உண்மையிலேயே அழிந்து வருகின்றனவா? தினமணி நாளிதழ் – கொண்டாட்டம் இணைப்பில். 22 ஏப்ரல் 2012.[Jeganathan, P. (2012). Sittukuruvigal unmayileye azinthu varukindranava? Dinamani – Tamil Newspaper. Date 22nd April 2012 (Are House Sparrows really declining? and on citizensparrow results)]
- Popular Article2012ஒரு மழைக்காட்டு விதையின் பயணம். (The Journey of a Rainforest seed)தினமணி நாளிதழ் – கொண்டாட்டம் இணைப்பில். 11 மார்ச் 2012. Dinamani- Tamil Newspaper. 11th March 2012.
ஒரு மழைக்காட்டு விதையின் பயணம். தினமணி நாளிதழ் – கொண்டாட்டம் இணைப்பில். 11 மார்ச் 2012. [Jeganathan, P. (2012).Oru Mazaikkatu vithaiyin payanam.Dinamani- Tamil Newspaper. Date: 11thMarch (The Journey of a Rainforest seed)]
- Popular Article2012மரமும் மரியேனும். (On old trees and Marianne North)புதிய தலைமுறை. 18அக்டோபர் 2012. Puthiya Thalaimurai. 18th October 2012.
- Popular Article2012காட்டுக்குள்ளே ஷூட்டிங். (On impact of cinema shooting in wild habitats)புதிய தலைமுறை. 11அக்டோபர் 2012. Puthiya Thalaimurai. 11th October 2012.
- Popular Article2012அதிரப்பள்ளியும்அமிதாபச்சனும். (On Athirapalli Waterfalls,Dr. Amitha bachan’swork on Great Hornbills)புதிய தலைமுறை. 13 செப்டம்பர் 2012. Puthiya Thalaimurai. 13th September 2012.
அதிரப்பள்ளியும்அமிதாபச்சனும். காக்கைக்குருவிஎங்கள்ஜாதிதொடர்-10. புதியதலைமுறை. 13 செப்டம்பர் 2012.[Jeganathan, P. (2012).Athirapalliyum Amitha bachanum. Kakkai Kuruvi Engal Jathi-Series, ArticleNo.10Puthiya Thalaimurai. 13th September 2012. (On Athirapalli Waterfalls,Dr. Amitha bachan’swork on Great Hornbills)]
- Popular Article2012காடென்ன செய்தது நமக்கு? (On what can we do for Wildlife conservation?)புதிய தலைமுறை. 1 நவம்பர் 2012. Puthiya Thalaimurai. 1st November 2012.
- Popular Article2012பூஞ்சைக்கு வந்த மவுசே! (On Fungi)புதிய தலைமுறை. 25அக்டோபர் 2012. Puthiya Thalaimurai. 25th October 2012.
- Popular Article2012A problem landscape in the Western GhatsHornbill, April-June, 2012 : 4-8
- Popular Article2012களைகள் ஓய்வதில்லை. (On Invasive Alien Plants)புதிய தலைமுறை. 27 செப்டம்பர் 2012. Puthiya Thalaimurai. 27th September 2012.
- Popular Article2012நம் முகத்தில் முழித்த நரி (On Golden Jackal conservation)புதிய தலைமுறை. 20செப்டம்பர் 2012. Puthiya Thalaimurai. 20th September 2012.
- Journal Article2012Distance-related thresholds and influence of the 2004 tsunami on damage and recovery patterns of coral reefs in the Nicobar IslandsCurrent Science 102:1199–1205
The earthquake and tsunami of 2004 resulted in the devastation of marine and coastal ecosystems across the Indian Ocean. However, without adequate baseline information it has been difficult to properly gauge its full impact. The reefs of the Nicobar Islands in the Bay of Bengal lie on a path that ranges from 190 to 500 km from Banda Aceh, the epicentre of the 2004 tsunami. In 2008, we recorded benthic damage as a result of the tsunami to reefs off 14 Nicobar Islands across a gradient of distance from the epicentre. A clear pattern was observed in the demographic structure of the most abundant coral genera, Acropora and Porites across the distance gradient. Significantly, for the largest coral individuals of both genera (> 50 cm diameter), there were distinct threshold effects – their abundance declining dramatically in reefs closer than 350 km from the epicentre. Corals between 20 and 50 cm diameter also increased with distance from the epicentre, but in a more linear fashion. Smaller size classes either showed no apparent trend (Acropora) or decreased linearly (Porites) with distance. These gen- era represent very different life-history strategies: Acropora is fast-growing and highly susceptible to a range of disturbances, while Porites typically grows slowly but is resistant to disturbance. The fact that both genera showed similar thresholds indicates that, close to the epicentre, the impact of the earthquake and tsunami was large enough to override any species- specific resistance. Also, algal cover was also much higher than at locations further north, linked to higher coral mortality at these locations. However, the fact that smaller size class coral individuals were rela- tively abundant and even increased close to the ep centre indicates possible paths of reef recovery after the catastrophe.
- Journal Article2012Patterns of species participation across multiple mixed-species flock types in a tropical forest in northeastern India.Journal of Natural History. 46(43-44):2749–2762.Download
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We studied mixed-species bird flocks in northeastern India to (a) develop a framework for quantifying species participation in mixed-species flocks, (b) characterize the ecology and behaviour of participant species, and (c) explore mechanisms influencing the coexistence of different mixed-species flock types. To characterize participation in mixed-species flocks, we implement a new method incorporating species abundances, minimizing potential biases in measuring participation arising from differences in the availability of flocking species. There are at least three distinct flock types in the lowland forests of northeastern India; these flock types differ in the body mass and vertical stratum use of participant species. The “core” of mixed-species flocks was composed of a species group that differed much more in their foraging method in comparison with “attendant” species. The exchange of benefits and minimization of interspecific competition might lead to, and maintain, heterogeneity in foraging methods among core species of mixed-species flocks.