Threshold responses of floating meadow fish communities to floodplain forest cover in the lower Amazon River.

ABSTRACT: Forest cover is positively associated with fish biomass and fisheries yield in the Amazon River floodplain, and many species enter flooded forests to feed, spawn, or seek refuge from predation. Floating macrophyte beds, known as floating meadows, in Amazon floodplains support high fish diversity and serve as nursery habitat for many fishes of high commercial importance. We surveyed fish from floating meadows in floodplain lakes along the lower Amazon River to evaluate variation in fish abundance in relation to forest cover and local environmental variables. Species associations with forest cover were estimated with threshold indicator taxa analysis (TITAN2). The analysis identified taxa that gradually increased in abundance and occurrence as forest cover increased. Many species gradually i

SUBMITTER: Grinstead S 

PROVIDER: S-EPMC12658946 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature