• Corpus ID: 160818028

Mesurer la biodiversité pour comprendre l'effet des perturbations sur les commutés végétales : apport des caractéristiques écologiques et évolutives des espèces

@inproceedings{Turcati2011MesurerLB,
  title={Mesurer la biodiversit{\'e} pour comprendre l'effet des perturbations sur les commut{\'e}s v{\'e}g{\'e}tales : apport des caract{\'e}ristiques {\'e}cologiques et {\'e}volutives des esp{\`e}ces},
  author={Laure Turcati},
  year={2011}
}
Mon travail de these avait pour objectif d’etudier deux indicateurs de biodiversite tenant compte des caracteristiques des especes, la specialisation ecologique et la diversite phylogenetique, afin d’evaluer leur apport pour la comprehension des causes et des consequences des modifications des communautes vegetales. Nos resultats montrent que la specialisation moyenne des communautes peut etre un bon indicateur de reponse de la biodiversite a une perturbation (ici la fragmentation des habitats… 

Figures and Tables from this paper

Fragmentation of Forest Ecosystems and Connectivity Between Sacred Groves and Forest Reserves in Southeastern Benin, West Africa

This study shows that despite their limited spatial extent, SGs are key landscape features that play a vital role in local biodiversity conservation and suggest that forest isolation is potential threat for conservation of biological and structural diversity.

References

SHOWING 1-10 OF 233 REFERENCES

A specialist-generalist classification of the arable flora and its response to changes in agricultural practices

This study shows that the concept of generalist/specialist species is particularly relevant to understand the effect of anthropogenic disturbances on the evolution of plant community composition and that ecological theories developed in stable environments are valid in highly disturbed environments such as agro-ecosystems.

The apportionment of quadratic entropy: a useful alternative for partitioning diversity in ecological data

Many methods that study the diversity within hierarchically structured populations have been developed in genetics. Among them, the analysis of molecular variance (AMOVA) (Excoffier et al., 1992) has

Can traits predict species' vulnerability? A test with farmland passerines in two continents

  • M. Pocock
  • Environmental Science
    Proceedings of the Royal Society B: Biological Sciences
  • 2010
The models had poor ability to predict species' vulnerability in one region from trait–population trend relationships from a different region, and must be considered if such trait-based models are used to inform conservation priorities.

Partitioning of functional diversity reveals the scale and extent of trait convergence and divergence

Partitioning functional diversity within and among communities revealed that both trait convergence and divergence occur in the formation of assemblages from the local species pool, suggesting the existence of ecological redundancy among communities.

Disturbance Alters the Phylogenetic Composition and Structure of Plant Communities in an Old Field System

This study supports the notion that disturbed plots are more clustered than expected, rather than ‘undisturbed’ plots being more overdispersed, suggesting that disturbed plant communities are being more strongly influenced by environmental filtering of conserved niche traits.

Less lineages - more trait variation: phylogenetically clustered plant communities are functionally more diverse.

Within lineages, species are not randomly assembled into communities, contradicting Neutral Theory, and evidence for evolutionary divergence in trait-states as well as present-day mutual exclusion among related, similar species is found, suggesting that functional diversity of communities increased due to past and present interactions between species within lineages.

Predicting changes in community composition and ecosystem functioning from plant traits: revisiting the Holy Grail

A framework using concepts and results from community ecology, ecosystem ecology and evolutionary biology to provide a linkage between traits associated with the response of plants to environmental factors and traits that determine effects of plants on ecosystem functions is presented.

Eigenvector estimation of phylogenetic and functional diversity

The results indicated that the variance of the phylogenetic component of body mass estimated within assemblages was highly correlated with a common measure of functional diversity (Rao’s Q), and a general approach based on phylogenetic eigenvectors provides similar results when compared to other metrics of FD and PD.

The merging of community ecology and phylogenetic biology.

Several key areas are reviewed in which phylogenetic information helps to resolve long-standing controversies in community ecology, challenges previous assumptions, and opens new areas of investigation.

Phylogenetic diversity: a quantitative framework for measurement of priority and achievement in biodiversity conservation

The utility of PD was demonstrated in four case studies: state of the environment reporting, with changes in avian faunas resulting from extinctions quantified as indicators of the state of biodiversity at Global, New Zealand and Waikato region scales, and changes in available habitat quantifiedAs indicators of pressures on biodiversity in the Waikatos region.
...