Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Relationships of estimated riverine fish catch to river discharge (A) and fish species richness (B) across freshwater ecoregions. Hierarchical variance partitioning was used to estimate effects of each environmental factor when discharge is included in the model (C) or removed statistically (D). Bars indicate the magnitude of positive (solid) or negative (open) effects.
