Patterns in and predictors of stream and river macroinvertebrate genera and fish species richness across the conterminous USA | Knowledge and Management of Aquatic Ecosystems

Anthropogenic impact on freshwater habitats, communities and ecosystem functioning

Open Access

Fig. 2

Fish species and macroinvertebrate genera richness at the individual site and various regional scales. Fine-grained regional richness is based on Omernik Level-III ecoregions and level-4 Hydrologic Units (HUCs). Coarse-grained regional richness is based on nine aggregated Omernik ecoregions and level-2 HUCs. Boxes are the interquartile ranges, lines in the boxes are medians, and the whiskers are 5th/95th percentiles.

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