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Habitat fragmentation prevents species from tracking climate change

Climate changeaffectsbiodiversity globally, by forcing species to shift their distribution to track the changes in temperature. An international collaboration between scientists from France, Sweden, the Netherlands and Finland shows, in an article published in the journal Ecology Letters,that habitat fragmentation caused by human activity affects distribution shifts in butterfly species and, hence, their capacity to cope with climate change.

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Vespa velutina frelon

Not just honeybees: predatory habits of Vespa velutina (Hymenoptera: Vespidae) in France

Our results suggest that V. velutina is a generalist opportunistic predator targeting mostly locally abundant prey. While the species may have an impact on honeybees, its generalist, opportunistic behaviour on abundant insects suggests a minor impact on wild species.

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Syrphe porte-plume (Sphaerophoria scripta), un visiteur assidu de la moutarde blanche (Sinapis alba) du printemps à l’automne. (©Benoît Geslin)

No off-season for insect pollinators in the city!

In the city, the seasonal patterns of activity of insect pollinators could be disturbed by the urban microclimate as well as by the presence of ornamental flora. To study this phenomenon, Vincent Zaninotto and his collaborators monitored the activity of insect pollinators in Paris and in the natural environment, from late winter to autumn. In […]

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spatial heterogeneity

Persistence of soil organic carbon caused by functional complexity

Soil carbon persistence can be understood through the lens of decomposers as a result of functional complexity derived from the interplay between spatial and temporal variation of molecular diversity and composition. For example, co-location alone can determine whether a molecule is decomposed, with rapid changes in moisture leading to transport of organic matter and constraining the fitness of the microbial community, while greater molecular diversity may increase the metabolic demand of, and thus potentially limit, decomposition.

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protistes

Environmental pulse disturbances disproportionately affect large body size species

Smaller organisms are typically more abundant than larger ones, which is a fundamental characteristic of ecological communities. How environmental pulse disturbances affect these « abundance pyramids » remains poorly understood. In a study recently published in Ecology Letters, researchers from iEES Paris and the University of Zürich showed that disturbances which are not size-selective still […]

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Savanne

Integrative Ecology : from Mechanisms to Ecosystem services “EMS” Team

Team publications Team members Pas de traduction pour cette page. Nous cherchons à comprendre et analyser expérimentalement ou par des observations, puis à représenter par des modèles couplés, les grands cycles de la matière (nutriments minéraux, carbone) en prenant en compte à la fois des processus classiquement étudiés en écologie des écosystèmes (ex : nitrification ou […]

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abeille

Ecology and Evolution of Interaction Networks “EERI” Team

Team publications Team members In the context of current large pressures exerted by human populations on natural communities, ecological sciences often cannot provide adequate predictions or management decisions. One reason is the intrinsic complexity of ecosystems. The EERI team tries to handle a part of this complexity by focusing on the structure, functioning and evolution […]

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