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Non-native introductions influence fish body size distributions within a dryland river [Ecosphere]

Keywords : biodiversity–ecosystem function, invasive species, Lower Colorado River Basin, response–effect traits, Verde River

par Frédéric Magné - publié le

A contemporary challenge in ecology is assessing the ecosystem effects of multispecies introductions. Quantifying shifts in body sizes, a common trait with which many per capita rates of ecosystems functioning scales, provide an important way forward. Evidence suggests that freshwater fish introductions have altered species-level body size distributions globally, but it is difficult to interpret their functional consequences because animals contribute to ecosystem functioning at the individual level at smaller spatial scales. In this study, we determine whether these macroecological patterns hold for individual size distributions (ISDs) at local scales.(...)

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