%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Villenave, Cécile
%A Saj, S.
%A Attard, E.
%A Klumpp, K.
%A Le Roux, X.
%T Grassland management history affects the response of the nematode community to changes in above-ground grazing regime
%D 2011
%L PAR00008679
%G ENG
%J Nematology
%@ 1388-5545
%K defoliation ; ecological indices ; functional guilds ; grassland ; grazing ; (de)-intensification ; urea
%M ISI:000298162200011
%N Part 8
%P 995-1008
%R 10.1163/138855411x574558
%U https://www.documentation.ird.fr/hor/PAR00008679
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2023-06/010086607.pdf
%V 13
%W Horizon (IRD)
%X Changes in grassland management induce disturbances that influence both soil functioning and soil fauna. This study aimed at determining the extent to which the composition of a grassland soil nematode community could be altered by a shift of grazing regime and the potential feedback that these alterations could provoke on grassland functioning. Therefore, we monitored the composition of the soil nematode community (i.e., plant-, bacterial-and fungal-feeders, omnivores and carnivores) of mesocosms that were sampled from two contrasted long-term field trials (high vs low grazing treatments) and subsequently subjected to high or no grazing for 2 years. The soil nematofauna responded faster and more strongly to the application of an intensive grazing regime on a previously extensively exploited system than the other way round. The application of an intensive grazing regime induced a significant increase in numbers of bacterial feeders and a decrease of the relative abundance of fungal-feeding nematodes. The nematofaunal community structure was determined by both the past and current grazing regimes throughout the 2 years of monitoring. Observed effects on soil microbivores seemed to reflect the 'immediate' above-ground primary production potential and to follow micro-organism dynamics. On the other hand, observed effects on root-feeding nematodes seemed to reflect the integral effect of past and current grazing regimes on plant community root biomass and quality.
%$ 074 ; 076