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Assessing long-term effects of multiple, potentially confounded drivers in ecosystems from species traits [Global Change Biology]

Keywords : climate change, confounding effect, invertebrates, large rivers, long-term trends, multiple drivers, species traits, water quality

par Frédéric Magné - publié le

Although species traits have the potential to disentangle long-term effects of multiple, potentially confounded drivers in ecosystems, this issue has received very little attention in the literature. We aimed at filling this gap by assessing the relative effects of hydroclimatic and water quality factors on the trait composition of invertebrate assemblages over 30 years in the Middle Loire River (France). Using a priori predictions on the long-term variation of trait-based adaptations over the three decades, we evaluated the ability of invertebrate traits to indicate the effects of warming, discharge reduction and water quality improvement.(...)

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