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@ARTICLE{VanLooy:829876,
      author       = {Van Looy, Kris and Piffady, Jérémy and Floury, Mathieu},
      title        = {{A}t what scale and extent environmental gradients and
                      climatic changes influence stream invertebrate communities?},
      journal      = {The science of the total environment},
      volume       = {580},
      issn         = {0048-9697},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2017-03492},
      pages        = {34 - 42},
      year         = {2017},
      abstract     = {In a context of increasing landscape modifications and
                      climatic changes, scale hierarchy becomes an ever more
                      crucial issue to integrate in the analysis of drivers and
                      stressors of biological communities, especially in river
                      networks. To cope with this issue, we developed (i) spatial
                      hierarchical models of functional diversity of stream
                      invertebrate communities to assess the relative influence of
                      local- vs. regional-scale factors in structuring community
                      assembly, and (ii) analysis of metacommunity elements to
                      determine the ecological processes behind the structuring.
                      The spatial structuring of benthic invertebrate communities
                      was investigated over 568 sites in South-eastern France.
                      Community structure was mainly driven by the altitudinal
                      gradient and spring flow variation at broad scales, with
                      functional diversity gradually decreasing with elevation and
                      being maximized at intermediate levels of flow variability.
                      According to the ‘elements of metacommunity structure’
                      analysis, the prevailing influence of the altitudinal
                      gradient was also supported by a Clementsian structuration
                      of invertebrate communities. Conversely, the influence of
                      observed climatic changes in temperature and rainfall was
                      weak and observed only at fine scales. As a result, natural
                      environmental filters were stronger drivers of the
                      functional diversity of communities than human-induced
                      stressors (e.g. water pollution and hydromorphological
                      alterations). More broadly, our results suggest that
                      management needs to embrace the possibilities of gathering
                      high spatial and taxonomical resolution data when analysing
                      and predicting flow variation and climate change effects in
                      order to preserve and restore functionally diverse
                      communities. Moreover, to develop environmental flow schemes
                      or restoration and climate change adaptation strategies for
                      freshwater communities, local and regional processes need to
                      be addressed simultaneously; equally responsible as drivers
                      of community diversity},
      cin          = {IBG-3},
      ddc          = {333.7},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255)},
      pid          = {G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000395353600005},
      doi          = {10.1016/j.scitotenv.2016.12.009},
      url          = {https://juser.fz-juelich.de/record/829876},
}