@article{fdi:010072712,
  title = {{E}nvironmental and spatial filters of zooplankton metacommunities in shallow pools in high-elevation peatlands in the tropical {A}ndes},
  author = {{H}errera, {E}. {Q}. and {J}acobsen, {D}. and {C}asas, {J}. and {D}angles, {O}livier},
  editor = {},
  language = {{ENG}},
  abstract = {{U}nderstanding metacommunity organisation in freshwater ecosystems is particularly important at high elevation in the tropical {A}ndes, as this region is considered an important biodiversity hotspot with many endemic species threatened by climate change. {H}igh levels of dispersal at the regional scale and strong environmental filters at the local scale are thought to structure aquatic communities in these systems. {H}owever, metacommunity organisation patterns at the limit of aquatic life (>4,500ma.s.l.) remain largely unknown. {G}iven the extreme environmental conditions experienced by organisms at high elevation, environment filters would be expected to play a greater role than spatial filters in community assemblages. {W}e assessed the effects of environmental and spatial filters on zooplankton ({C}ladocera), to gain insight into metacommunity organisation in the shallow high-elevation pools of the tropical {A}ndes. {W}e sampled zooplankton communities and assessed nine environmental variables, for 200 pools from 20 peatlands in the {C}ordillera {R}eal of {B}olivia. {W}e performed redundancy and variation partitioning analyses on both abundance and presence/absence data, to evaluate the contribution of environmental and spatial processes (geographic and elevation distances) to cladoceran metacommunity assembly at different spatial scales. {W}e identified 18 cladoceran species, eight of which were endemic to the {A}ndes. {W}e found that both environment and spatial filters made a significant contribution to the structuring of cladoceran communities at higher spatial scales (i.e. intervalleys and within valleys), whereas only the environmental filter operated at small spatial scales (i.e. within peatlands). {E}levation had a significant effect on cladoceran community variation (e.g. 6.9% within valleys, for abundance data), but not on species diversity. {S}imilar patterns were obtained with presence/absence data. {M}acrophyte cover, pool area and p{H} were the most important variables explaining community variation and the species diversity of cladocerans at pool level. {T}hese results suggest that species sorting is probably the main process generating variation in cladoceran communities at all spatial scales. {A}t larger spatial scales (intervalleys and within valleys), limited dispersal may also filter species composition. {W}e identified factors significantly contributing to the variation observed, but their overall explanatory power was low. {T}his finding highlights the difficulties involved in evaluating the response of aquatic organisms to their environment and suggests that other environmental variables should be considered. {M}oreover, frequent and unpredictable disturbances and high stochasticity probably operate simultaneously with environmental filters to structure zooplankton organisation in these unique and harsh aquatic systems.},
  keywords = {{C}ladocera ; environmental harshness ; metacommunity organisation ; peatlands ; tropical {A}ndes ; {BOLIVIE} ; {ANDES} ; {CORDILLERA} {REAL} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{F}reshwater {B}iology},
  volume = {63},
  numero = {5},
  pages = {432--442},
  ISSN = {0046-5070},
  year = {2018},
  DOI = {10.1111/fwb.13079},
  URL = {https://www.documentation.ird.fr/hor/fdi:010072712},
}