A study on influence of different environmental factors weights on the habitat model for <i>Scomber japonicus</i>

Yi Wei; Guo Ai; Chen Xinjun

doi:10.3969/j.issn.0253-4193.2017.12.009

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Yi Wei, Guo Ai, Chen Xinjun. A study on influence of different environmental factors weights on the habitat model for Scomber japonicus[J]. Haiyang Xuebao, 2017, 39(12): 90-97. doi: 10.3969/j.issn.0253-4193.2017.12.009

Citation:

Yi Wei, Guo Ai, Chen Xinjun. A study on influence of different environmental factors weights on the habitat model for Scomber japonicus[J]. Haiyang Xuebao, 2017, 39(12): 90-97. doi: 10.3969/j.issn.0253-4193.2017.12.009

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A study on influence of different environmental factors weights on the habitat model for Scomber japonicus

doi: 10.3969/j.issn.0253-4193.2017.12.009

1.
College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
2.
College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;Marine Fisheries Research of Zhejiang, Zhoushang 316021, China;Key Laboratory of Oceanic Fisheries Exploration, Ministry of Agriculture, Shanghai 201306, China;National Engineering Research Center for Oceanic Fisheries, Shanghai 201306, China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai 201306, China

Received Date: 2017-04-19
Rev Recd Date: 2017-07-06

Abstract

Abstract

Scomber japonicus is a pelagic fish that inhabits the western Pacific Ocean. Understanding the distribution of its fishery and the relationship with marine environmental factors could help us to make reasonable use of the fishery stock. In this study, based on the production data of S.japonicus from July to September, 2003-2011, as well as sea surface temperature (SST), gradient of sea surface temperature (GSST),sea surface height (SSH) and fishing effort to establish the suitability index (SI) through using normal distribution function. This study used different weights to establish habitat suitability index (HSI) through using arithmetic weighted model (AWM), and using production data of July to September in 2012 to verify. The results show that the monthly suitable weights of SST, STG and SSH from July to September is 0.5, 0.25, 0.25; 0.8, 0.1, 0.1, and 0, 1.0, 0. According to the data during July to September in 2012, we found that the main fishing ground is distributed in the waters with HSI greater than 0.6, and the monthly proportion of fishing effort and catch from July to September was 85.87% and 92.55%, 76.74% and 86.69%, 51.83% and 56.11%. It is concluded that in different months different environmental factors have different effects on the distribution of S.japonicus fishery. This study laid the foundation for better predicting the fishing grounds of S.japonicus.
- Scomber japonicus,
- habitat suitability index,
- oceanic environmental factor,
- arithmetic weighted mean model

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References(34)

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