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| Effect of complex hydraulic variables and physicochemical factors on freshwater mussel density in the largest floodplain lake, China Jia, C.; Wu, C.; Huang, X.; Zhou, C.; Ouyang, S.; Liu, X.; Wu, X. (2023). Effect of complex hydraulic variables and physicochemical factors on freshwater mussel density in the largest floodplain lake, China. Ecol. Proces. 12: 15. https://dx.doi.org/10.1186/s13717-023-00427-y
In: Ecological Processes. Springer: New York. e-ISSN 2192-1709
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BackgroundHabitat degradation and flow regime alterations are two of the most prominent and common impact factors to freshwater mussel populations. Knowledge of the correlation between freshwater mussel distribution, density and habitat characteristics is important for maintaining and restoring their biodiversity and ecological functions. Information on predicting habitat suitability of freshwater mussels is lacking in China. Here, we aimed to analyze the correlation between freshwater mussel density and complex hydraulic and physicochemical variables to predict habitat suitability. ResultsThe results showed that four complex hydraulic variables (boundary Reynolds number, critical shear stress, bed roughness and mean sediment particle size) and four physicochemical variables (water temperature, chlorophyll-a, transparency and pH) were key factors for predicting habitat suitability of freshwater mussels. Freshwater mussel density was significantly correlated with Froude number, water temperature and chlorophyll-a. ConclusionsOur results confirmed that higher freshwater mussel density would be associated with areas that are stable in complex hydraulic and physicochemical variables. These results provide an important insight into the conservation of freshwater mussel diversity and their habitat restoration in China and globally. |
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