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- W3098639828 abstract "Agricultural areas are currently expanding in the world. It resulted in the decline of biodiversity, affectingecosystem functioning and the provision of ecosystem services associated. To decrease the pressure ofagricultural activities, we should better manage the ecosystem services delivered by natural enemies, suchas carabids. Carabids are usually considered as providers of ecosystem functions, such as pest regulation.The objective of this study was to investigate the effect of five different crops (Wheat, Sugar beet, Oilseedrape, Pea and Barley) under non-inversion tillage on carabid communities’ dynamics during spring. Wequantified three diversity indices (abundance-activity, number of species and equitability index) and usedfunctional-trait based approach, the communities’ diet profiles, as an evaluation of the ecosystem servicesdelivered by carabid’s community. The study was conducted every year from 2009 to 2012 in 5 sites locatedin the Seine et Marne region. The carabid communities were recorded from 67 fields cropped with: oilseedrape (9 fields), winter wheat (27 fields), sugar beet (12 fields), spring barley (11 fields) and spring pea (8fields). Carabids were sampled using three replicate pitfall traps per field, each fulfilled with a saturated saltsolution containing a small amount of strong detergent as a preservative. The carabids were sampled oncetime every month during four months, from March to June. 33 621 individuals have been trapped in 4 yearsand 11 carabid species represented each at least 2% of the total abundance-activity. In all crop, totalabundance-activities significantly increased during the year as the number of species. Contrary to the indicesrelated to taxonomic diversity, the equitability indices did not significantly change during the year in allsampled crops. Crops were characterised by significantly different composition of carabid species in April,May and June but not in March. Concerning the diet profile, the expression of phytophagous significantlyincreased while the expression of zoophagous significantly decreased with time, whatever the cropconsidered. Despite great differences between crops, ecosystem services delivered by carabid’s communitychanged similarly during spring. According to the crop studied, agricultural practices were probably notexplaining changes in carabid communities and demonstrated strong influences of resources availability. Thelatter seemed to be the main cause of changes in diet characteristics of carabid communities. To maximiseecosystem services related to pest regulation, it seems necessary to better understand the influences ofresources used by carabid in order to control their diet expression." @default.
- W3098639828 created "2020-11-23" @default.
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- W3098639828 date "2017-09-25" @default.
- W3098639828 modified "2023-10-12" @default.
- W3098639828 title "Comparisons of temporal changes in carabid communities inhabiting five different crops" @default.
- W3098639828 hasPublicationYear "2017" @default.
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