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Spatial disparity of fishing activities overlapping the abrupt shifts for marine net primary production

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Abstract

Marine net primary productivity (NPP) plays an important role in regulating marine ecosystem processes, determining marine carbon sinks and maintaining marine productivity. Analyzing the characteristics and mechanisms of the interaction between overexploitation of fishery resources and the transformation of marine NPP is essential to balance marine ecosystem health and fishing activities. This study spatially overlaps the abrupt shifts of human-induced marine net primary productivity detected by breaks for additive season and trend (BFAST) algorithm with fishing activities and investigates the impact of human activities on the marine ecosystem. The results show that 47.60% of the marine areas in China’s exclusive economic zone (EEZ) had detected human-induced NPP turning points (TPs), with 43.65% of the TPs showing a negative reversal (NR) trend. The NR trend occurs in areas with high fishing intensity. High-intensity fishing activities and vulnerability to productivity and NPP TPs in the Bohai and Yellow Sea areas in China’s EEZ exacerbate spatial disparity in fishing effort and product availability. By detecting the abrupt shifts and change characteristics of marine NPP, and spatial disparity overlapping with fishing activities, this study provides some area-based sustainable solutions to support ecosystem-based fisheries management.

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All data generated or analysed during this study are included in this published article [and its supplementary information files].

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Acknowledgements

This research was funded by the National Natural Science Foundation of China Grants (No.41976208), the Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) (No. 311021004) and Internal Program of State Key Laboratory of Marine Environmental Science (No. MELRI2205). We would thank Dr. Shaobin Li, Ms. Zhiyuan Xiang and Mr. Zhen Zhang at Xiamen University for their valuable comments during the preparation of this manuscript.

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Correspondence to Yangfan Li.

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Zhao, Y., Li, Y. Spatial disparity of fishing activities overlapping the abrupt shifts for marine net primary production. Rev Fish Biol Fisheries 33, 1409–1421 (2023). https://doi.org/10.1007/s11160-023-09778-3

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  • DOI: https://doi.org/10.1007/s11160-023-09778-3

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