首页|期刊导航|中国海洋湖沼学报（英文版）|Modeling a habitat suitability index for the eastern fall cohort of Ommastrephes bartramii in the central North Pacific Ocean
中国海洋湖沼学报（英文版）2011，Vol.29Issue(3)：493-504,12.DOI:10.1007/s00343-011-0058-y
Modeling a habitat suitability index for the eastern fall cohort of Ommastrephes bartramii in the central North Pacific Ocean
Modeling a habitat suitability index for the eastern fall cohort of Ommastrephes bartramii in the central North Pacific Ocean
摘要
Abstract
The eastern fall cohort of the neon flying squid, Ommastrephes bartramii, has been commercially exploited by the Chinese squid jigging fleet in the central North Pacific Ocean since the late 1990s. To understand and identify their optimal habitat, we have developed a habitat suitability index (HSI) model using two potential important environmental variables - sea surface temperature (SST) and sea surface height anomaly (SSHA) - and fishery data from the main fishing ground (165°-180°E) during June and July of 1999-2003. A geometric mean model (GMM), minimum model (MM) and arithmetic weighted model (AWM) with different weights were compared and the best HSI model was selected using Akaike's information criterion (AIC). The performance of the developed HSI model was evaluated using fishery data for 2004. This study suggests that the highest catch per unit effort (CPUE) and fishing effort are closely related to SST and SSHA. The best SST- and SSHA-based suitability index (SI) regression models were SISST-bsed = 0.7SIeffort-SST + 0.3 SICPUE-SST, and SISSHA-based = 0.5SIeffon-SSHA + 0.5SICP,UE-SSHA,respectively, showing that fishing effort is more important than CPUE in the estimation of SI. The bestHSI model was the AWM, defined as HSI=0.3SISST-based+ 0.7SISSHA-based, indicating that SSHA is moreimportant than SST in estimating the HSI of squid. In 2004, monthly HSI values greater than 0.6 coincidedwith the distribution of productive fishing ground and high CPUE in June and July, suggesting that themodels perform well. The proposed model provides an important tool in our efforts to develop forecastingcapacity of squid spatial dynamics.关键词
model/habitat suitability index/eastern fall cohort of Ommastrephes bartramii/fishing effort/CPUE/central North Pacific OceanKey words
model/habitat suitability index/eastern fall cohort of Ommastrephes bartramii/fishing effort/CPUE/central North Pacific Ocean引用本文复制引用
CHEN Xinjun,TIAN Siquan,LIU Bilin,CHEN Yong..Modeling a habitat suitability index for the eastern fall cohort of Ommastrephes bartramii in the central North Pacific Ocean[J].中国海洋湖沼学报（英文版）,2011,29(3):493-504,12.基金项目
Supported by the PhD Programs Foundation of Ministry of Education of China (No.20093104110002),the National High Technology Research and Development Program of China (863 Program) (Nos.2007AA092201,2007AA092202),the National Natural Science Foundation (No.NSFC40876090) and the Shanghai Leading Academic Discipline Project (No.S30702).Y.Chen's involvement in the project was partially supported by the Shanghai Dongfang Scholar Program （No.20093104110002）
