Trophic gauntlet effects on fisheries recovery: a case study in Sansha Bay, China

Low biological productivity causes ecosystem energy deficiency. Sansha Bay is an important spawning and nursery ground for migratory fish in the East China Sea (ECS). There is significant mariculture in this area, but stock enhancement programs and seasonal fishery closures have failed to recover po...

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Autores principales:	Bin Xie, Cheng Huang, Ya Wang, Xijie Zhou, Guogan Peng, Yancheng Tao, Jiaju Huang, Xiaoqing Lin, Lingfeng Huang
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	high nutrient low chlorophyll ecopath stable isotope mariculture sansha bay larimichthys crocea Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/d3d81ef1b34c4b70a5f21632068826a4
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spelling	oai:doaj.org-article:d3d81ef1b34c4b70a5f21632068826a42021-11-11T14:23:42ZTrophic gauntlet effects on fisheries recovery: a case study in Sansha Bay, China2096-41292332-887810.1080/20964129.2021.1965035https://doaj.org/article/d3d81ef1b34c4b70a5f21632068826a42021-01-01T00:00:00Zhttp://dx.doi.org/10.1080/20964129.2021.1965035https://doaj.org/toc/2096-4129https://doaj.org/toc/2332-8878Low biological productivity causes ecosystem energy deficiency. Sansha Bay is an important spawning and nursery ground for migratory fish in the East China Sea (ECS). There is significant mariculture in this area, but stock enhancement programs and seasonal fishery closures have failed to recover populations of the commercially important species, Larimichthys crocea. We want to figure out the potential reason of unsuccessful L. crocea resource in recent 30 years. In this study, the trophic status of L. crocea, the food source proportions of L. crocea and zooplankton, and the food web structure and functioning of Sansha Bay was analyzed. A high nutrient low chlorophyll phenomenon was observed: this prevented harmful algal blooms, and phytoplankton growth was restrained by intensive macroalgal culture, resulting in a low abundance of zooplankton in Sansha Bay. Phytoplankton was the most important food source of zooplankton, and zooplankton was the greatest food source of juvenile L. crocea. Analyzed L. crocea suffered from starvation. Crucially, most of the phytoplankton was not used efficiently in the Sansha Bay ecosystem. This study suggests that trophic bottleneck, caused by food limitation, is a potential reason for unsuccessful fishery recovery in enclosed bay with macroalgal culture.Bin XieCheng HuangYa WangXijie ZhouGuogan PengYancheng TaoJiaju HuangXiaoqing LinLingfeng HuangTaylor & Francis Grouparticlehigh nutrient low chlorophyllecopathstable isotopemariculturesansha baylarimichthys croceaEcologyQH540-549.5ENEcosystem Health and Sustainability, Vol 7, Iss 1 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	high nutrient low chlorophyll ecopath stable isotope mariculture sansha bay larimichthys crocea Ecology QH540-549.5
spellingShingle	high nutrient low chlorophyll ecopath stable isotope mariculture sansha bay larimichthys crocea Ecology QH540-549.5 Bin Xie Cheng Huang Ya Wang Xijie Zhou Guogan Peng Yancheng Tao Jiaju Huang Xiaoqing Lin Lingfeng Huang Trophic gauntlet effects on fisheries recovery: a case study in Sansha Bay, China
description	Low biological productivity causes ecosystem energy deficiency. Sansha Bay is an important spawning and nursery ground for migratory fish in the East China Sea (ECS). There is significant mariculture in this area, but stock enhancement programs and seasonal fishery closures have failed to recover populations of the commercially important species, Larimichthys crocea. We want to figure out the potential reason of unsuccessful L. crocea resource in recent 30 years. In this study, the trophic status of L. crocea, the food source proportions of L. crocea and zooplankton, and the food web structure and functioning of Sansha Bay was analyzed. A high nutrient low chlorophyll phenomenon was observed: this prevented harmful algal blooms, and phytoplankton growth was restrained by intensive macroalgal culture, resulting in a low abundance of zooplankton in Sansha Bay. Phytoplankton was the most important food source of zooplankton, and zooplankton was the greatest food source of juvenile L. crocea. Analyzed L. crocea suffered from starvation. Crucially, most of the phytoplankton was not used efficiently in the Sansha Bay ecosystem. This study suggests that trophic bottleneck, caused by food limitation, is a potential reason for unsuccessful fishery recovery in enclosed bay with macroalgal culture.
format	article
author	Bin Xie Cheng Huang Ya Wang Xijie Zhou Guogan Peng Yancheng Tao Jiaju Huang Xiaoqing Lin Lingfeng Huang
author_facet	Bin Xie Cheng Huang Ya Wang Xijie Zhou Guogan Peng Yancheng Tao Jiaju Huang Xiaoqing Lin Lingfeng Huang
author_sort	Bin Xie
title	Trophic gauntlet effects on fisheries recovery: a case study in Sansha Bay, China
title_short	Trophic gauntlet effects on fisheries recovery: a case study in Sansha Bay, China
title_full	Trophic gauntlet effects on fisheries recovery: a case study in Sansha Bay, China
title_fullStr	Trophic gauntlet effects on fisheries recovery: a case study in Sansha Bay, China
title_full_unstemmed	Trophic gauntlet effects on fisheries recovery: a case study in Sansha Bay, China
title_sort	trophic gauntlet effects on fisheries recovery: a case study in sansha bay, china
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/d3d81ef1b34c4b70a5f21632068826a4
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Trophic gauntlet effects on fisheries recovery: a case study in Sansha Bay, China

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