%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Cauvy-Fraunie, S.
%A Andino, P.
%A Espinosa, R.
%A Calvez, Roger
%A Jacobsen, D.
%A Dangles, Olivier
%T Ecological responses to experimental glacier-runoff reduction in alpine rivers
%D 2016
%L fdi:010067655
%G ENG
%J Nature Communications
%@ 2041-1723
%K EQUATEUR ; ANDES ; ANTISANA GLACIER ; ZONE TROPICALE
%M ISI:000379091500001
%P art. 12025 [7 ]
%R 10.1038/ncomms12025
%U https://www.documentation.ird.fr/hor/fdi:010067655
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers16-08/010067655.pdf
%V 7
%W Horizon (IRD)
%X Glacier retreat is a worldwide phenomenon with important consequences for the hydrological cycle and downstream ecosystem structure and functioning. To determine the effects of glacier retreat on aquatic communities, we conducted a 4-year flow manipulation in a tropical glacier-fed stream. Compared with an adjacent reference stream, meltwater flow reduction induces significant changes in benthic fauna community composition in less than 2 weeks. Also, both algal and herbivore biomass significantly increase in the manipulated stream as a response to flow reduction. After the flow reduction ceased, the system requires 14-16 months to return to its pre-perturbation state. These results are supported by a multi-stream survey of sites varying in glacial influence, showing an abrupt increase in algal and herbivore biomass below 11% glacier cover in the catchment. This study shows that flow reduction strongly affects glacier-fed stream biota, prefiguring profound ecological effects of ongoing glacier retreat on aquatic systems.
%$ 036 ; 062