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Environmental effects on the spatiotemporal variability of purpleback flying squid in Xisha-Zhongsha waters, South China Sea

文献类型： 外文期刊

作者： Yu, Jing 1 ; Hu, Qiwei 1 ; Tang, Danling 4 ; Chen, Pimao 1 ;

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

2.Guangdong Prov Key Lab Fishery Ecol & Environm, Guangzhou 510300, Guangdong, Peoples R China

3.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai 20030, Peoples R China

4.Chinese Acad Sci, South China Sea Inst Oceanog, Guangdong Key Lab Ocean Remote Sensing, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China

关键词： Sthenoteuthis oualaniensis; Environmental effects; Spatiotemporal variability; Generalized additive models; Xisha-Zhongsha waters

期刊名称：MARINE ECOLOGY PROGRESS SERIES （ 影响因子：2.824； 五年影响因子：3.09 ）

ISSN： 0171-8630

年卷期： 2019 年 623 卷

页码：

收录情况： SCI

摘要： The purpleback flying squid Sthenoteuthis oualaniensis is an important ecological and fishery species in the South China Sea (SCS). This study investigated environmental effects on the spatiotemporal variability of S. oualaniensis in Xisha-Zhongsha waters, SCS, using generalized additive models (GAMs); results showed that 43.06% of the total variation in S. oualaniensis catch per unit effort (CPUE) was explained by these factors. Based on the stepwise GAMs, the most important factor was sea surface temperature (SST), with a contribution of 14.80 %, followed by longitude, month, chlorophyll a (chl a) concentration, and latitude, with contributions of 8.8, 5.94, 5.90, and 3.09 %, respectively. Year and sea surface height anomaly (SSHA) each had a slight influence on the model, explaining approximately 2.97 and 2.10 % of the variation in S. oualaniensis CPUE, respectively. S. oualaniensis was mainly distributed between 14-18 degrees N and 110-115 degrees E, where SSTs were 27-28.5 degrees C, chl a concentrations were 0.11-0.15 mg m(-3), and at the periphery of eddies where the SSHA was close to 0 m. Analysis of the center of gravity for S. oualaniensis showed that the population shifted southwards by 2 degrees latitude in the spring of 2008, during La Nina conditions. The findings of this study can help to better the understanding of the movement of S. oualaniensis in Xisha-Zhongsha waters and promote better fishery management under a changing climate.

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