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Increased Sediment Deposition Triggered by Climate Change Impacts Freshwater Pearl Mussel Habitats and Metapopulations by Damiano Baldan; Jens Kiesel; Christoph Hauer; Sonja C. Jähnig; Thomas Hein is a Environmental Science article available to read on EtoBox.

What is Increased Sediment Deposition Triggered by Climate Change Impacts Freshwater Pearl Mussel Habitats and Metapopulations about?

## Abstract The freshwater pearl mussel Margaritifera margaritifera is a benthic organism sensitive to hydrological regime alterations and habitat degradation driven by excessive fine bed material deposit (FBMD). Both issues are potentially exacerbated by climate change. Understanding how climate change affects future mussel habitats and the dispersal among them (dependent on the brown trout as fish host) can support the planning of effective conservation actions. To project the impacts of climate change on the mussel, a semi‐mechanistic modelling cascade was implemented for the Aist catchment in Austria (630 km^2^), including a hydrological model, a hydraulic model, Random Forest Models for FBMD accumulation risk and Species Distribution Models. Two climate change models (RCPs 4.5 and 8.5) for two future horizons (2060 and 2090) were considered. A graph‐based assessment of the structural connectivity was used to measure the probability of successful dispersal. Results show a reduction of peak discharge that cascades into a widespread reduction in shear stresses during high flow. The mussel's habitats, defined by hydraulics (i.e. patches with low shear stresses during high flow), a

Who reads Increased Sediment Deposition Triggered by Climate Change Impacts Freshwater Pearl Mussel Habitats and Metapopulations?

Author

Damiano Baldan; Jens Kiesel; Christoph Hauer; Sonja C. Jähnig; Thomas Hein

Publisher

Wiley

Published

2021

Language

EN

Field

Environmental Science (Physical Sciences)