Delineating Diversity-Based Freshwater Bioregions by Integrating Fish and Macroinvertebrates With Species Distribution Models and Spatial Clustering.

ABSTRACT: Delineating ecologically meaningful spatial units is fundamental for understanding biodiversity patterns and guiding effective conservation. Here, we delineated diversity-based freshwater bioregions across the Yangtze River Basin (YRB) by integrating multi-taxon biodiversity data with species distribution models and spatial clustering. We compiled distribution records of 391 fish species and 984 macroinvertebrate taxa across 13,716 hydrological units. MaxEnt models were used to predict species distributions based on key environmental drivers identified through principal component analysis and Mantel tests. Beta diversity was quantified using Jaccard dissimilarity, and non-metric multidimensional scaling (NMDS) ordination was applied to extract the first three ordination axes for each taxon

SUBMITTER: He Y 

PROVIDER: S-EPMC12683362 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature