Ecological River Health Assessment Using Multi-Metric Models in an Asian Temperate Region with Land Use/Land Cover as the Primary Factor Regulating Nutrients, Organic Matter, and Fish Composition.

ABSTRACT: This study was performed to determine the ecological health of a temperate river over nine years (2011-2019); it also analyzed the trophic structure and linkage of nutrients (nitrogen [N] and phosphorus [P]), sestonic chlorophyll-a (CHL-a), and the top trophic fish in the Asian monsoon region. Water chemistry, trophic indicators, and tolerance guilds were primarily influenced by land use and land cover (LULC); the magnitude of variation was also related to geographic elevation, artificial physical barriers (weirs), and point sources. Levels of nutrients, organic matter, and CHL-a largely influenced by the intensity of the monsoon seasonality for a particular LULC and stream order. Mann-Kendall tests based on a long-term annual dataset showed that annual organic matter and CHL-a increased o

SUBMITTER: Mamun M 

PROVIDER: S-EPMC9368116 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature