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Forêts et services écosystémiques. Effet des éléments boisés sur les pollinisateurs dans les paysages agricoles

Abstract : In natural ecosystems and agrosystems, pollination is often characterized as a crucial ecosystem service in decline. It is mainly provided by domestic and wild bees, which actually contribute to yield and quality of 75% of crops for 35% of food production. Due to the decline in pollinator diversity and abundance, widely measured for fifty years, pollination efficiency is now threatened. This pollinator crisis is much debated and has been linked to agricultural intensification, especially to the fragmentation and loss of semi-natural habitats in landscapes. Several studies suggest that the species richness and abundance of crop pollinators decrease with distance from or surrounding proportion of semi-natural habitats. Based upon the hypothesis that forest edge may enhance pollinator activity and communities through a habitat complementation effect rather than acting as real population sources, our project aims at measuring the effects of forest vicinity on crop pollinator assemblages. We'll sample bees (Apoidea) in a study design composed of insect-pollinated crops (including orchards), surrounded by forests or woodland fragments. Results about scale-dependant effects of the landscape context will be useful to optimize the management of land mosaics.
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Conference papers
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https://hal.inrae.fr/hal-02593305
Contributor : Migration Irstea Publications <>
Submitted on : Friday, May 15, 2020 - 5:07:53 PM
Last modification on : Tuesday, February 16, 2021 - 12:09:34 PM

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  • HAL Id : hal-02593305, version 1
  • IRSTEA : PUB00028922

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Christophe Bouget. Forêts et services écosystémiques. Effet des éléments boisés sur les pollinisateurs dans les paysages agricoles. Pollinisation, le gîte et le couvert, Jun 2010, Paris, France. pp.23. ⟨hal-02593305⟩

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