Variations of trophic structure and niche space in fish community along a highly regulated subtropical large river.

ABSTRACT: The trophic interactions between consumers and resources play a vital role in the stability of communities. In river systems, fragmentation of natural habitats and environmental changes alters the energy basis and community composition, consequently leading to variations in the community's trophic structure and niche space. However, our understanding of how the trophic structure responds to environmental changes is still very limited. Here, based on stable isotope data, we explored and compared trophic positions (TPs), community-wide trophic metrics, and isotope niche space of fish communities in three reaches with different hydrogeomorphic conditions along a highly regulated subtropical river over three seasons. The community trophic structure and niche space showed notable spatiotemporal

SUBMITTER: Ru H 

PROVIDER: S-EPMC9596329 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature