文献类型：期刊文献

英文题名：Relationships between environmental variables and spatial and temporal distribution of jack mackerel (Trachurus japonicus) in the Beibu Gulf, South China Sea

作者：Feng, Yuting[1];Shi, Haiyi[1];Hou, Gang[1];Zhao, Hui[1,2];Dong, Changming[2,3]

机构：[1]Guangdong Ocean Univ, Fac Chem & Environm Sci, Zhanjiang, Peoples R China;[2]Southern Marine Sci & Engn Guangdong Lab, Zhuhai, Peoples R China;[3]Nanjing Univ Informat Sci & Technol, Ocean Modeling & Observat Lab, Nanjing, Peoples R China

年份：2021

卷号：9

外文期刊名：PEERJ

收录：SCI-EXPANDED(收录号：WOS:000718109500006)、、Scopus(收录号：2-s2.0-85118773859)、WOS

基金：This study was supported by the National Natural Science Foundation of China (grant 42076162) , the Natural Science Foundation of Guangdong Province of China (grant 2020A1515010496) , the National Natural Science Foundation of China (No. 31702347) , undergraduate innovation and Entrepreneurship training program of Guangdong province (S202010566005) , the start-up project of Guangdong Ocean University (R19006) , and by the Postgraduate Education Innovation Project of Guangdong Ocean University (521005041) . The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

语种：英文

外文关键词：Trachurus japonicus; Environment factors; Remote sensing; Spatiotemporal distribution; Generalized additive models; Beibu Gulf

外文摘要：The jack mackerel (Trachurus japonicus) is both a dominant pelagic fish species and an important fishing target in the Beibu Gulf, South China Sea. However, the resource status of this species fluctuates dramatically, and it has recently been added to a "red list"of threatened species of the International Union for Conservation of Nature (IUCN). Despite its economic importance and decreasing population status, limited research on its spatiotemporal distribution has been undertaken over the last decades. In order to evaluate the most crucial factors that influence the spatiotemporal variability of T. japonicus and to determine GAM performance and predictability, we analyze catch per unit effort (CPUE) of T. japonicus from Beibu Gulf over four seasons (months) from 2013 to 2014. A generalized additive model (GAMs) is populated with water depth and remotely sensed sea surface temperature (SST), sea surface salinity (SSS), sea surface chlorophyll-a concentration (Chl-a) and sea level anomaly (SLA). The CPUE of T. japonicus varies seasonally, with higher CPUE in summer and autumn than in spring and winter, and the highest CPUE in summer. GAM results explain 57% of the deviation explained in CPUE, with the most important variables being SLA, Month, Depth, SSS, and SST , each explaining 21.2%, 18.7%, 10.7%, 5.1%, and 1.3% of the variation in CPUE, respectively. This species occurs mainly between 50 and 75 m depth, SSS values 32.3-33.5 PSU and SST 25-30.5 degrees C. High CPUE sites occur near SLA <= 0 m, on the edge of cold eddies, and there is a certain catch near the sea surface with SLA >= 0 m. The spatial and temporal distribution of T. japonicus is affected by the season and the marine hydrological environment. This study might contribute to a better understanding of the distributional patterns of T. japonicus as well as provide a basis for sustainable management in the Beibu Gulf.