COMPARISON OF HABITAT SUITABILITY INDEX MODELS FOR PURPLEBACK FLYING SQUID (Sthenoteuthis oualaniensis) IN THE OPEN SOUTH CHINA SEA
文献类型: 外文期刊
第一作者: Zhou, W. F.
作者: Zhou, W. F.;Xu, H. Y.;Li, A. Z.;Cui, X. S.;Xu, H. Y.;Li, A. Z.;Chen, G. B.
作者机构: Minist Agr, Key Lab East China Sea & Ocean Fishery Resources, Shanghai 200090, Peoples R China;Shanghai Ocean Univ, Coll Marine Sci, Shanghai 201306, Peoples R China;Chinese Acad Fishery Sci, South China Sea Fishery Res Inst, Guangzhou 510300, Guangdong, Peoples R China
关键词: ocean remote sensing; SCS; ecological model; fishery resources; catch per unit effort
期刊名称:APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH ( 2020影响因子:0.711; 五年影响因子:0.796 )
ISSN: 1589-1623
年卷期: 2019 年 17 卷 2 期
收录情况: SCI
摘要: Fisheries resources in inshore regions of the South China Sea (SCS) have been depleted by overfishing. Purpleback flying squid (Sthenoteuthis oualaniensis) fishery is considered as a potential resource in the open SCS. However, little is known about their optimal habitat. Here, habitat suitability index (HSI) models were constructed using the external envelope and arithmetic mean methods to identify optimal habitats of purpleback flying squid. The matched fishery and environmental data (sea surface temperature, sea surface height anomaly, and ocean net primary productivity data) were collected from 2010 to 2014 in the open SCS. We calculated catch per unit effort (CPUE) and fishing effort to estimate the suitability index. The estimated suitable ranges for sea surface temperature, sea surface height anomaly, and net primary productivity were 27.1-30.4 degrees C, 0-0.15 cm, and 236.2-492.8 mg C/m(2) d based on the HSI model incorporating fishing effort. The corresponding suitable ranges estimated by the HSI model incorporating CPUE were 27.4-30.7 degrees C, 0.03-0.18 cm, and 238.4-475.5 mg C/m(2) d, respectively. When HSI values for 2014 were >0.6, the HSI model based on fishing effort explained 72.6% of the fishing effort and the average CPUE was 4.29 t/d. The HSI model based on CPUE explained 66.39% of the fishing effort for 2014 and the average CPUE was 4.23 t/d. The accuracy of the forecasting model based on fishing effort was higher than that based on CPUE. This HSI model can be used to aid in the management and conservation of purpleback flying squid in the SCS.
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