The impact of summer Yangtze river runoff fluctuations on estuarine fronts dynamics and zooplankton communities from 2016 to 2023 DOI Creative Commons

Yepeng Xu,

Fangping Cheng,

Xiao Ma

et al.

Frontiers in Marine Science, Journal Year: 2025, Volume and Issue: 12

Published: March 20, 2025

Estuarine fronts, which arise from the convergence of distinct water masses, exhibit considerable spatial and temporal variability play a crucial role in shaping ecological dynamics within estuarine ecosystems. Despite their importance, due to limited data, there’s inefficiency understanding on how biological communities, particularly zooplankton, respond these dynamic environmental features. The Yangtze River Estuary (YRE), transitional zone between East China Sea, is an ideal place study response zooplankton communities as freshwater discharge, offshore waters, Taiwan Warm Current converge here form sediment plume fronts summer. We investigate variables including temperature, salinity, turbidity, Chlorophyll (Chl ) YRE during summer 2016 2023, examine differences distribution community dominant factors controlling variation different runoff years. Our findings found that appeared around 122.5°E except drought years (2022 2023); extended 123.5°E beyond wet (2016, 2020 2021), while shrank 123°E were classified into low-salinity, moderate-salinity, high-salinity groups spatially most years, but low-salinity group had not been detected extreme year 2022. During flood nearshore species such Oithona brevicornis , Centropages dorsispinatus Cladocera exhibited notable increase dominance, favored euryhaline like Microsetella rosea . Furthermore, salinity temperature all played significant roles only important factor These results implied prominent shaped collectively; contrast, disappeared variation. Besides, extremely low 2022 has shown lead obvious changes might affect fisheries stocks require concern.

Language: Английский

The impact of summer Yangtze river runoff fluctuations on estuarine fronts dynamics and zooplankton communities from 2016 to 2023 DOI Creative Commons

Yepeng Xu,

Fangping Cheng,

Xiao Ma

et al.

Frontiers in Marine Science, Journal Year: 2025, Volume and Issue: 12

Published: March 20, 2025

Estuarine fronts, which arise from the convergence of distinct water masses, exhibit considerable spatial and temporal variability play a crucial role in shaping ecological dynamics within estuarine ecosystems. Despite their importance, due to limited data, there’s inefficiency understanding on how biological communities, particularly zooplankton, respond these dynamic environmental features. The Yangtze River Estuary (YRE), transitional zone between East China Sea, is an ideal place study response zooplankton communities as freshwater discharge, offshore waters, Taiwan Warm Current converge here form sediment plume fronts summer. We investigate variables including temperature, salinity, turbidity, Chlorophyll (Chl ) YRE during summer 2016 2023, examine differences distribution community dominant factors controlling variation different runoff years. Our findings found that appeared around 122.5°E except drought years (2022 2023); extended 123.5°E beyond wet (2016, 2020 2021), while shrank 123°E were classified into low-salinity, moderate-salinity, high-salinity groups spatially most years, but low-salinity group had not been detected extreme year 2022. During flood nearshore species such Oithona brevicornis , Centropages dorsispinatus Cladocera exhibited notable increase dominance, favored euryhaline like Microsetella rosea . Furthermore, salinity temperature all played significant roles only important factor These results implied prominent shaped collectively; contrast, disappeared variation. Besides, extremely low 2022 has shown lead obvious changes might affect fisheries stocks require concern.

Language: Английский

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