Institution
French Institute of Pondicherry
Facility•Puducherry, India•
About: French Institute of Pondicherry is a facility organization based out in Puducherry, India. It is known for research contribution in the topics: Holocene & Vegetation. The organization has 168 authors who have published 238 publications receiving 5663 citations.
Topics: Holocene, Vegetation, Evergreen, Biodiversity, Monsoon
Papers published on a yearly basis
Papers
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TL;DR: The extent of the trait data compiled in TRY is evaluated and emerging patterns of data coverage and representativeness are analyzed to conclude that reducing data gaps and biases in the TRY database remains a key challenge and requires a coordinated approach to data mobilization and trait measurements.
Abstract: Plant traits-the morphological, anatomical, physiological, biochemical and phenological characteristics of plants-determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research spanning from evolutionary biology, community and functional ecology, to biodiversity conservation, ecosystem and landscape management, restoration, biogeography and earth system modelling. Since its foundation in 2007, the TRY database of plant traits has grown continuously. It now provides unprecedented data coverage under an open access data policy and is the main plant trait database used by the research community worldwide. Increasingly, the TRY database also supports new frontiers of trait-based plant research, including the identification of data gaps and the subsequent mobilization or measurement of new data. To support this development, in this article we evaluate the extent of the trait data compiled in TRY and analyse emerging patterns of data coverage and representativeness. Best species coverage is achieved for categorical traits-almost complete coverage for 'plant growth form'. However, most traits relevant for ecology and vegetation modelling are characterized by continuous intraspecific variation and trait-environmental relationships. These traits have to be measured on individual plants in their respective environment. Despite unprecedented data coverage, we observe a humbling lack of completeness and representativeness of these continuous traits in many aspects. We, therefore, conclude that reducing data gaps and biases in the TRY database remains a key challenge and requires a coordinated approach to data mobilization and trait measurements. This can only be achieved in collaboration with other initiatives.
882 citations
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TL;DR: In this article, Holocene and Pleistocene sediments from an arid tropical region in Ethiopia have been analyzed for their phytolith content, presented as detailed counts and diagrams according to the Twiss classification.
237 citations
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TL;DR: This work introduces 12 different forms of functional rarity along gradients of species scarcity and trait distinctiveness and highlights the potential key role offunctional rarity in the long-term and large-scale maintenance of ecosystem processes.
Abstract: Rarity has been a central topic for conservation and evolutionary biologists aiming to determine the species characteristics that cause extinction risk. More recently, beyond the rarity of species, the rarity of functions or functional traits, called functional rarity, has gained momentum in helping to understand the impact of biodiversity decline on ecosystem functioning. However, a conceptual framework for defining and quantifying functional rarity is still lacking. We introduce 12 different forms of functional rarity along gradients of species scarcity and trait distinctiveness. We then highlight the potential key role of functional rarity in the long-term and large-scale maintenance of ecosystem processes, as well as the necessary linkage between functional and evolutionary rarity.
233 citations
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TL;DR: In this article, the authors present an R package designed to compute both AGB/AGC estimate and its associated uncertainty from forest plot datasets, using a Bayesian inference procedure.
Abstract: 1. Estimating forest above-ground biomass (AGB), or carbon (AGC), in tropical forests has become a major
concern for scientists and stakeholders. However, AGB assessment procedures are not fully standardized and
even more importantly the uncertainty associated with AGB estimates is seldom assessed.
2. Here, we present an R package designed to compute both AGB/AGC estimate and its associated uncertainty
from forest plot datasets, using a Bayesian inference procedure. The package builds upon previous work on
pantropical and regional biomass allometric equations and published datasets by default but it can also
integrate unpublished or complementary datasets in many steps.
3. BIOMASS performs a number of standard tasks on input forest tree inventories: i) tree species
identification, if available, is automatically corrected; ii) wood density is estimated from tree species identity;
iii) if height data are available, a local height-diameter allometry may be built; else height is inferred from
pantropical or regional models; iv) finally, AGB/AGC are estimated by propagating the errors associated with
all the calculation steps up to the final estimate. R code is given in the paper and in the appendix for
illustration purpose.
4. The BIOMASS package should contribute to improved standards for AGB calculation for tropical forest
stands, and will encourage users to report the uncertainties associated with stand-level AGB/AGC estimates
in future studies.
232 citations
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TL;DR: The BioTIME database contains raw data on species identities and abundances in ecological assemblages through time to enable users to calculate temporal trends in biodiversity within and amongst assemblage using a broad range of metrics.
Abstract: Motivation: The BioTIME database contains raw data on species identities and abundances in ecological assemblages through time. These data enable users to calculate temporal trends in biodiversity within and amongst assemblages using a broad range of metrics. BioTIME is being developed as a community-led open-source database of biodiversity time series. Our goal is to accelerate and facilitate quantitative analysis of temporal patterns of biodiversity in the Anthropocene.Main types of variables included: The database contains 8,777,413 species abundance records, from assemblages consistently sampled for a minimum of 2 years, which need not necessarily be consecutive. In addition, the database contains metadata relating to sampling methodology and contextual information about each record.Spatial location and grain: BioTIME is a global database of 547,161 unique sampling locations spanning the marine, freshwater and terrestrial realms. Grain size varies across datasets from 0.0000000158 km(2) (158 cm(2)) to 100 km(2) (1,000,000,000,000 cm(2)).Time period and grainBio: TIME records span from 1874 to 2016. The minimal temporal grain across all datasets in BioTIME is a year.Major taxa and level of measurement: BioTIME includes data from 44,440 species across the plant and animal kingdoms, ranging from plants, plankton and terrestrial invertebrates to small and large vertebrates.
231 citations
Authors
Showing all 193 results
Name | H-index | Papers | Citations |
---|---|---|---|
Victoria Reyes-García | 58 | 310 | 11456 |
Eric Maire | 57 | 380 | 14148 |
Mohan K. Balasubramanian | 47 | 130 | 6238 |
Marcia C. Inhorn | 44 | 137 | 6673 |
Pierre Couteron | 38 | 115 | 4799 |
Anja Rammig | 37 | 106 | 7489 |
Raphaël Pélissier | 35 | 101 | 5317 |
Narayanaswamy Parthasarathy | 31 | 65 | 3661 |
Maxime Réjou-Méchain | 31 | 64 | 4368 |
Raphaël Mathevet | 27 | 105 | 2288 |
Christophe Proisy | 25 | 64 | 2348 |
François Munoz | 25 | 116 | 2857 |
Doris Barboni | 25 | 50 | 2234 |
Cédric Gaucherel | 24 | 67 | 1737 |
Isabelle Guérin | 24 | 151 | 2254 |