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agroforesterie

Cirad – Crop diversification enhances yields, biodiversity and ecosystem services

The article, published in Global Change Biology on 18 July 2021, assembles for the first time a substantial body of empirical evidence on the positive impacts of cultivated biodiversity on agroecosystems.
Crop diversification was found to enhance crop production by 14% and associated biodiversity by almost 25%. Water quality was improved by 50%, pest and disease control by over 63% and soil quality by 11%.

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papillon

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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Ver plat

Obama chez moi! The invasion of metropolitan France by the land planarian Obama nungara(Platyhelminthes, Geoplanidae)

Obama nungara is a species of land flatworm originating from South America; the species was recently described and distinguished from a similar species, Obama marmorata. Obama nungara has invaded several countries of Europe, but the extent of the invasion has not been thoroughly mapped.

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Tour Eiffel

Urban Ecosystems: A dialog between Scientists and Paris City Managers

For more than 10 years, the City of Paris and the Institute of Ecology and Environmental Sciences of Paris have been collaborating on various issues of urban ecology. From these multiform collaborations at the interface between fundamental research and concrete techniques for the management of urban environments, several advances have been made on both scientific […]

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