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Jean-Philippe Puyravaud

Jean-Philippe Puyravaud
Sigur Nature Trust

phD

About

82
Publications
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Introduction
I am a landscape ecologist interested in animal population connectivity. I am familiar with GIS (GRASS, QGIS).

Publications

Publications (82)
Article
Full-text available
We address the issue of spatial justice with reference to Asian elephant conservation and the handling of animals perceived to be problematic in the Sigur region, Nilgiris Biosphere Reserve, southern India. In this village-dotted region, the need to create corridors to facilitate elephant movement was challenged by tourism operators. The courts rul...
Article
Full-text available
Habitat fragmentation results in loss of genetic variation in populations and increases inbreeding processes that are measurable by genetic markers. The fragmented forests of Eastern Ghats-Central India support around 3000 Asian elephants (Elephas maximus L.), of which 2000 are in Odisha state. We obtained samples of fresh elephant dung from four p...
Article
Full-text available
Management of wildlife depends mostly on scientific data; ignoring this can lead to unintended consequences. We take the case study of the wild male Asian Elephant Rivaldo of the Sigur Region, who was translocated out of his range. Rivaldo returned to his home range within a few days, which could have been expected if scientific publications had be...
Article
Full-text available
Asian elephants are endangered while they have faced ~70% population decline in India in the last 60 years. Climate change projections indicate exacerbation of ongoing habitat loss (>40%) by 2070, potentially impacting genetic structure of wild elephants across India. Therefore, we provide consolidated baseline data on genetic diversity and structu...
Technical Report
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This paper explains how an elephant could be de-habituated to human food and prevented to enter villages
Article
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Aim Palms are an iconic, diverse and often abundant component of tropical ecosystems that provide many ecosystem services. Being monocots, tree palms are evolutionarily, morphologically and physiologically distinct from other trees, and these differences have important consequences for ecosystem services (e.g., carbon sequestration and storage) and...
Article
Full-text available
Many wildlife species survive in human-modified landscapes and understanding the opinions of those who share space with wildlife will aid conservation efforts. Using a questionnaire, we assessed the presence of 12 mammal species in 78 tea plantations in the Nilgiris, southern India. We obtained data on (i) plantation size, location, and elevation,...
Article
Full-text available
Aim: Palms are an iconic, diverse and often abundant component of tropical ecosystems that provide many ecosystem services. Being monocots, tree palms are evolutionarily, morphologically and physiologically distinct from other trees, and these differences have important consequences for ecosystem services (e.g., carbon sequestration and storage) an...
Article
Full-text available
Leaf stomatal density is known to covary with leaf vein density. However, the functional underpinning of this relation, and how it scales to whole‐plant water transport anatomy, is still unresolved. We hypothesized that the balance of water exchange between the vapour phase (in stomata) and liquid phase (in vessels) depends on the consistent scalin...
Article
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Lantana camara is a dominant invasive shrub in many protected areas of India including the Nilgiri Biosphere Reserve (NBR). We conducted a study to assess the regeneration potential of endemic native (shola) trees under different levels of Lantana infestation in the upper plateau of NBR. A total of 61 plots in a total area of 0.73ha were sampled, o...
Article
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Damages by the Asian elephant (Elephas maximus) range from crop raiding to loss of human lives, and understanding the underlying causes thereof could help reduce such incidents. Land-use change could be among the major causes of elephant incidents since they are long-lived and tend to have particular home ranges. To test this hypothesis, we assesse...
Article
The aim of the present study was to develop a statistical model for biomass estimation of an invasive shrub Lantana camara, and to assess the role of tree canopy cover in determining its invasion density and above ground biomass. The study was carried out in patches of tropical montane evergreen 'shola' forests that differed in disturbance regimes...
Article
Full-text available
Aim Climate change alters the water cycle, potentially affecting the distribution of species. Using an ensemble of species distribution models (SDMs), we predicted changes in distribution of the Asian elephant in South Asia due to increasing climatic variability under warming climate and human pressures. Location India and Nepal. Methods We compi...
Article
Full-text available
Xylem conduit diameter (Dmax) of woody angiosperm adults scales with plant size and widens from stem apex downwards. We hypothesized that, notwithstanding relative growth rate (RGR), growth form or leaf habit, woody seedling conduit Dmax scales linearly with plant size across species; this scaling should be applicable to all vegetative organs, with...
Article
Full-text available
Knowledge about the biogeographic affinities of the world’s tropical forests helps to better understand regional differences in forest structure, diversity, composition, and dynamics. Such understanding will enable anticipation of region-specific responses to global environmental change. Modern phylogenies, in combination with broad coverage of spe...
Article
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Landscape connectivity between protected areas is crucial for the conservation of megafauna. But often, corridor identification relies on expert knowledge that is subjective and not spatially synoptic. Landscape analysis allows generalization of expert knowledge when satellite tracking or genetic data are not available. The Nilgiri Biosphere Reserv...
Presentation
Full-text available
Multiple facets of ecological rarity reflect the ability of species (i) to establish and persist locally (local rarity), (ii) to spread and occupy a large area (regional rarity), and (iii) to occupy diverse environmental contexts (habitat rarity). We expect that these dimensions reflect distinct ecological, biogeographical and evolutionary drivers....
Poster
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Poster presented at the 6th World Congress on Mountain Ungulates and 5th International Symposium on Mouflon, held in Nicosia, Cyprus, 28th August to 1st September 2016.
Article
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The Nilgiri Tahr (Nilgiritragus hylocrius Ogilby, 1838) has not been comprehensively surveyed in the southern Western Ghats, India. Here we present results of a survey conducted in 2012 and 2013 in 25 sites where Nilgiri Tahr was reported in Agastyamalai range south of the Shencottah gap. The objectives of the survey were to assess population statu...
Article
A ratio-based logistic model developed to assess elephant harvest rates, based on a study at Nagarhole Tiger Reserve in India, was recommended as a management tool to control human–elephant conflict through culling. Considering this reserve among others violates an assumption of the logistic model: isolation. Nevertheless, assuming this violation w...
Article
Full-text available
The high species richness of tropical forests has long been recognized, yet there remains substantial uncertainty regarding the actual number of tropical tree species. Using a pantropical tree inventory database from closed canopy forests, consisting of 657,630 trees belonging to 11,371 species, we use a fitted value of Fisher’s alpha and an approx...
Article
Full-text available
We compiled records of 291 elephant deaths over a 33-year period (1979–2011) from the Mudumalai Tiger Reserve and the reserved forests of Nilgiri North and South divisions of southern India from the databases of the Tamil Nadu Forest Department, the Wildlife Protection Society of India and the Nilgiri Wildlife and Environment Association. We tested...
Article
Full-text available
The high species richness of tropical forests has long been recognized, yet there remains substantial uncertainty regarding the actual number of tropical tree species. Using a pantropical tree inventory database from closed canopy forests, consisting of 657,630 trees belonging to 11,371 species, we use a fitted value of Fisher's alpha and an approx...
Article
Full-text available
Purpose – The Ministry of Environment and Forest, Government of India, set up the Western Ghats Ecology Expert Panel (WGEEP) in March 2010 to provide guidelines for improved management within the Western Ghats biodiversity hotspot. The WGEEP's Mandate was to identify ecologically sensitive areas (ESAs). The Panel submitted their report in 2011 but...
Article
Full-text available
An ecological review of the WGEEP report (2011) and environmental management planning in India Jean-Philippe Puyravaud Priya Davidar Access to this document was granted through an Emerald subscription provided by 172729 [] For Authors If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors serv...
Article
Full-text available
Swamps represent a relatively understudied ecosystem in many regions, which contrasts markedly with the research attention which other wetlands and Mangrove ecosystems have received. In the upper Nilgiris of southern India, montane swamps are restricted to geographic areas with flat surfaces and bounded by different edge transition vegetation types...
Article
Full-text available
Abstract. Swamps represent a relatively understudied ecosystem in many regions, which contrasts markedly with the research attention which other wetlands and Mangrove ecosystems have received. In the upper Nilgiris of southern India, montane swamps are restricted to geographic areas with flat surfaces and bounded by different edge transition vegeta...
Article
Full-text available
The Man and Biosphere Program of UNESCO (MAB) was a pioneer in recognizing the role of local communities in the conservation of biodiversity. Biosphere reserves of MAB were designed with a core zone with maximum protection, a buffer zone with regulated activities, and a transition zone outside the reserve proper. The transition zone is where experi...
Article
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Similipal Tiger Reserve is a large insurgent-affected protected area (PA) located in the northern Eastern Ghats, India, with a resident tribal population of about 12,500. In 2007-08, we carried out a survey of conservation attitudes among 217 men and women (>20 years old) and documented their perceptions of wildlife and forest decline over a 20-yea...
Article
Full-text available
The study presented was carried out in 1978 with the support of the Asian Elephant Specialist Group (AsESG) of the International Union for the Conservation of Nature (IUCN) Species Survival Commission (SSC). Its objective was to investigate the impediments to elephant movement in the Nilgiri Hills, in the Western Ghats of India, in an attempt to su...
Article
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Bengal Florican Houbaropsis bengalensis is one of the most critically threatened birds of the world. The species has restricted distribution within the Indian subcontinent extending southeast to parts of Cambodia and Vietnam. The population of the species is being monitored in Nepal since 1982. The most recent study on the species shows a precipito...
Article
Full-text available
We assessed the factors influencing the perceived decline of Eriochrysisrangacharii, a rare endemic swamp grass species of the Nilgiri plateau (Western Ghats ofIndia), which had been listed as "presumed extinct" for over 100 years in the Red Data Book ofIndian Plants. This grass is used by the Todas, a local ethnic community, to thatch their temple...
Data
Full-text available
We conducted a survey in Kerala from December 2009 to March 2010 to document Nilgiri Tahr Nilgiritragus hylocrius (Ogilby) populations in fourteen sites that ranged from Neyyar Wildlife Sanctuary in the southern Western Ghats to Silent Valley, north of the Palghat Gap. The total sightings of the Nilgiri Tahr over the course of the survey were 235 a...
Article
Full-text available
India sustains some of the world's most imperiled forests. The Forest Survey of India recently announced that forest cover in India had expanded by nearly 5% over the past decade. This result, while technically accurate, is misleading. The Forest Survey estimates forest cover by using automated algorithms to analyze satellite imagery—an approach th...
Article
Full-text available
India sustains some of the world's most imperiled forests, which encompass parts of three recognized biodiversity hotspots ([ 1 ][1]). How are these crucial forests faring? In 2009, the Forest Survey of India (FSI) announced ostensibly good news: Indian forests had expanded by nearly 5% over the
Poster
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Ecological studies predominantly collect detailed data on habitat use and species interactions at the local scale. In contrast, biogeographic research often uses relatively sparse data from across a species range to model species distribution. Conservation biogeography requires predicting distributions at a broad scale while capturing sufficient lo...
Article
We tested whether local abundance of rain forest trees in the medium elevation wet forests of the southern Western Ghats (WG) was related to environmental tolerance, life form, and geographical range. We selected trees in medium elevation wet forests (750–1700 m asl) of the southern WG, using two data bases: a small plot (30 × 30 m) data base of 28...
Article
Deforestation in tropical countries has been partly attributed to the non-sustainable harvesting of forest biomass by local communities. We conducted a survey among 786 households in 31 agricultural villages adjoining the eastern boundary of the Kalakad–Mundanthurai Tiger Reserve, in the southern Western Ghats to see whether household wealth, socia...
Article
Full-text available
The Western Ghats of India and Sri Lanka biodiversity hotspot is often regarded as one unit because of shared biogeographical history. However, recent studies suggest that certain faunal components, particularly in the wet zones are distinct. This article looks at the existing information on species richness and endemicity of taxa in both regions....
Article
Full-text available
We assessed collection intensity of forest products in three regions of the Western Ghats: Kogar, Sigur and KMTR with differing population densities and levels of forest protection. Fuel-wood was intensively collected in all three regions; fodder and green leaves in predominantly agricultural regions and cattle manure in Sigur. Agriculture, wage la...
Article
Aim We assessed the rates of turnover of tree species with distance (beta diversity) in wet forests of the Western Ghats (WG) complex of India to see whether climate, topographic variation or species traits influence beta diversity. Location The Western Ghats is a chain of mountains about 1600 km in length, running parallel to the western coast of...
Article
We evaluated the conservation attitudes of the local villagers living adjacent to the Kalakad-Mundanthurai Tiger Reserve in southern India 6 years after implementation of a World Bank funded eco-development project. We assessed attitudes towards three facets of conservation: the tiger, an emblematic species signifying India's commitment to wildlife...
Data
The Western Ghats of India and Sri Lanka biodiversity hotspot is often regarded as one unit because of shared biogeographical history. However, recent studies sug-gest that certain faunal components, particularly in the wet zones are distinct. This article looks at the ex-isting information on species richness and endemicity of taxa in both regions...
Article
Full-text available
Rural communities often depend on forest resources for their livelihood, but non-sustainable extraction of these resources can result in the loss of biodiversity. To assess the impact of resource extraction on forest vegetation, we conducted a study in the dry deciduous forests adjoining the eastern boundary of the Kalakad-Mundanthurai Tiger Reserv...
Article
Aim  We assessed the effects of latitude, altitude and climate on the alpha diversity of rain forest trees in the Western Ghats (WG) of India. We tested whether stem densities, dominance, the prevalence of rarity, and the proportion of understorey trees are significantly correlated with alpha diversity.Location  The WG is a chain of mountains c. 16...
Article
Understanding why there are so many kinds of tropical trees requires learning, not only how tree species coexist, but what factors drive tree speciation and what governs a tree clade's diversification rate. Many report that hybrid sterility evolves very slowly between separated tree populations. If so, tree species rarely originate by splitting of...
Article
Understanding why there are so many kinds of tropical trees requires learning, not only how tree species coexist, but what factors drive tree speciation and what governs a tree clade???s diversification rate. Many report that hybrid sterility evolves very slowly between separated tree populations. If so, tree species rarely originate by splitting o...
Article
Full-text available
Understanding why there are so many kinds of tropical trees requires learning, not only how tree species coexist, but what factors drive tree speciation and what governs a tree clade’s diversification rate. Many report that hybrid sterility evolves very slowly between separated tree populations. If so, tree species rarely originate by splitting of...
Article
Full-text available
The Red Data Book of Indian Plants considers that Eriocillysis rallgacharii C. E. C. Fisch. is extinct. However, this grass is very much utilized, because the Todas, a tribe of the high plateau of the Nilgiris, employ it as a thatching material for their temples and their traditional houses. It also provides fodder to their buffaloes. This plant, w...
Book
En Inde, comme dans une grande partie de la zone intertropicale, les forêts continuent à régresser sous l'effet combiné de l'inflation démographique, de politiques de développement ravageuses et de la mondialisation des marchés. Le présent volume est consacré au cas de la forêt qui couvre les Ghâts occidentaux, chaîne bordière du plateau du Deccan....
Article
Full-text available
The Red Data Book of Indian Plants (RDB) is a reference manual that lists threatened angiosperms, gymnosperms and pterydophytes. Because it is widely used as an analytical tool and is a major reference for impact assessments on vegetation, it is important that the RDB be as comprehensive and up to date as possible. This study is an attempt to cross...
Article
Aim The objective of this study was to document succession from grassland thickets to rain forest, and to provide evidence for their potential as restoration tools. Location The Linganamakki region (State of Karnataka) of the Central Western Ghats of India. Method We selected thirty vegetation thickets ranging from 4 to 439 m2 in area in the vicini...
Article
Research into interspecific variation in functional traits is important for our understanding of trade‐offs in plant design and function, for plant functional type classifications and for understanding ecosystem responses to shifts in species composition. Interspecific rankings of functional traits are a function of, among other factors, ontogeneti...
Article
Full-text available
Different authors utilize different formulae to calculate the annual rate of change of forest cover (or its opposite, the annual rate of deforestation) and use different terms to describe it. This generates confusion. I suggest that the annual rate of change of forest cover should be calculated as: r=(1/(t2−t1))×ln(A2/A1). This formula is derived f...