Cluster analysis of tuna purse seine fishery in the Western and Central Pacific

Hu Qiwei; Chen Xinjun; Xu Liangqi; Yu Jing

doi:10.3969/j.issn.0253-4193.2016.12.007

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Hu Qiwei, Chen Xinjun, Xu Liangqi, Yu Jing. Cluster analysis of tuna purse seine fishery in the Western and Central Pacific[J]. Haiyang Xuebao, 2016, 38(12): 66-75. doi: 10.3969/j.issn.0253-4193.2016.12.007

Citation:

Hu Qiwei, Chen Xinjun, Xu Liangqi, Yu Jing. Cluster analysis of tuna purse seine fishery in the Western and Central Pacific[J]. Haiyang Xuebao, 2016, 38(12): 66-75. doi: 10.3969/j.issn.0253-4193.2016.12.007

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Cluster analysis of tuna purse seine fishery in the Western and Central Pacific

doi: 10.3969/j.issn.0253-4193.2016.12.007

1.
College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
2.
College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306, China;National Distant-water Fisheries Engineering Research Center, Shanghai 201306, China;Collaborative Innovation Center for Distant-water Fisheries, Shanghai 201306, China
3.
Shanghai Fisheries Company, Shanghai 200090, China
4.
South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China

Received Date: 2016-06-06

Abstract

Abstract

According to production statistics from tuna purse seine fishery during 1995 to 2010, cluster analysis of purse seine fishery by year and month different time scale is analyzed. Combined with sea surface temperature (SST) and Niño 3.4 zone index, the causes of different fishing ground type are discussed. The studies shown that the frequency distribution of abnormal weather events (El Niño and La Niña events)are closely related to the class of clustering results of fishing ground in a monthly time scale, which can be divided into the following phases, i.e. January to March, April to June, July to September and October to December, this results is basically consistent with the time range of clustering results of fishing ground. Compared with center of clustering fishing ground and classification statistical of El Niño and La Niña events, it is found that the type of abnormal climate event associated with the results of clustering. Under the same category, the first category is in 1995 and 1997 with strong El Niño years, the second category is 1998, 2007 and 2009 with normal year, the third category is 2010 with a strong La Niña year, the fourth category is 1999, 2000 and 2001 with La Niña years, the fifth category is 1996 and 2008 with La Niña Year, and category VI is 2002 and 2004 with El Niño years. It is concluded that the changing annual fishing grounds has a strong correlation with the occurrence of El Niño and La Niña events, the index of the El Niño and La Niña can be used to predict the changes of fishing grounds at year and month scales.
- the Western and Central Pacific,
- tuna purse seine fishery class,
- cluster analysis,
- sea surface temperature,
- El Niñ,
- o

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References(15)

References

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