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Exploring the Spatial and Temporal Distribution of Frigate Tuna (Auxis thazard) Habitat in the South China Sea in Spring and Summer during 2015-2019 Using Fishery and Remote Sensing Data

文献类型： 外文期刊

作者： Zhou, Xingxing 1 ; Chen, Zuozhi 1 ; Xiong, Pengli 1 ; Cai, Yancong 1 ; Li, Jie 1 ; Zhang, Peng 1 ; Zhang, Jun 1 ; Li, Miao 1 ; Fan, Jiangtao 1 ;

作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Peoples R China

2.Shanghai Ocean Univ, Coll Marine Sci, Shanghai 201306, Peoples R China

3.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou 511458, Peoples R China

4.Minist Agr & Rural Affairs, Key Lab Sustainable Utilizat Open Sea Fishery, Guangzhou 510300, Peoples R China

关键词： Auxis thazard; habitat suitability index; generalized additive model; environmental factors; South China Sea

期刊名称：FISHES （ 影响因子：3.17； 五年影响因子：3.098 ）

ISSN：

年卷期： 2022 年 7 卷 5 期

页码：

收录情况： SCI

摘要： Frigate tuna Auxis thazard fishery is considered a potential marine resource in the open South China Sea (SCS). However, little is known about the spatial and temporal distribution of its habitat, and how this may respond to environmental changes. Using fish survey and remote sensing data from 2015-2019, we applied generalized additive models to identify relationships between environmental factors and the distribution of A. thazard in the SCS. To examine seasonal patterns in the habitat of A. thazard in the SCS, we generated a habitat suitability index model using environmental factors screened by generalized additive models. Results showed that A. thazard migrates from south to north in the SCS, and its suitable habitat is patchily distributed. Significant environmental factors affecting the habitat of A. thazard distribution were different in different seasons; we demonstrated A. thazard to be sensitive to Chl-a in spring (optimum 0.155, optimal range similar to 0.1252-0.1840), and in summer to be sensitive to SST (optimum 30.405, optimal range similar to 29.789-31.021) and SSH (optimum 0.741, optimal range similar to 0.618-0.864). Suitable habitat in spring occurs mainly in northeastern areas, while in summer it occurs mainly around the southeastern Nansha Islands. Compared with that in spring, the area of suitable habitat increases in summer, as does the habitat suitability index of the entire sea area. These results improve our understanding of environmental factors that affect the distribution of A. thazard habitat in the SCS, and provide a scientific basis for the development and management of A. thazard resources.

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