The crab community structure and its relationship with environment factors in the Nanji Islands ground shallow sea area waters

Xie Xu; Yu Cungen; Cai Houcai; Zheng Ji; Chen Wandong; Wu Erwei; Xia Lujun; Bi Siyao

doi:10.3969/j.issn.0253-4193.2017.10.006

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Xie Xu, Yu Cungen, Cai Houcai, Zheng Ji, Chen Wandong, Wu Erwei, Xia Lujun, Bi Siyao. The crab community structure and its relationship with environment factors in the Nanji Islands ground shallow sea area waters[J]. Haiyang Xuebao, 2017, 39(10): 65-77. doi: 10.3969/j.issn.0253-4193.2017.10.006

Citation:

Xie Xu, Yu Cungen, Cai Houcai, Zheng Ji, Chen Wandong, Wu Erwei, Xia Lujun, Bi Siyao. The crab community structure and its relationship with environment factors in the Nanji Islands ground shallow sea area waters[J]. Haiyang Xuebao, 2017, 39(10): 65-77. doi: 10.3969/j.issn.0253-4193.2017.10.006

Citation:

Xie Xu, Yu Cungen, Cai Houcai, Zheng Ji, Chen Wandong, Wu Erwei, Xia Lujun, Bi Siyao. The crab community structure and its relationship with environment factors in the Nanji Islands ground shallow sea area waters[J]. Haiyang Xuebao, 2017, 39(10): 65-77. doi: 10.3969/j.issn.0253-4193.2017.10.006

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The crab community structure and its relationship with environment factors in the Nanji Islands ground shallow sea area waters

doi: 10.3969/j.issn.0253-4193.2017.10.006

1.
Marine Fishery College, Zhejiang Ocean University, Zhoushan 316022, China
2.
Nanji Islands National Marine Nature Reserve Administration, Pingyang 325401, China

Received Date: 2017-01-09
Rev Recd Date: 2017-05-13

Abstract

Abstract

Based on the data obtained via the marine biological resources surveys of the Nanji Islands ground shallow sea area waters in November, 2013 and in February, May and September,2014, characteristics of crabs community including species composition, dominant species and biodiversity, were analyzed, and the related environmental factors were also examined. A total of 21 species, belonging to 12 genera in 7 families, were identified. The dominant species are Portunus trituberculatus, Charybdis bimaculataand Charybdis bimaculata. The species composition rather than dominant species showed clear seasonal changes. The maximum and minimum number of crab species were found in autumn and winter, respectively. The distribution of caught fisheries resources along water depths was documented that the morespecies were found at depths of 20-30 m and less species were found at depth of 30-40 m. The Shannon-Weaver diversity index of community in summer were lower than other seasons, and along water depths decreased from 10-20 m to 30-40 m, which means the Shannon-Weaver diversity index of crab community was in inverse proportion of the depth. Further redundancy analysis showed that water depth, temperature and salinity were the main environmental factors influencing crab species composition and community structure in this coastal conservation area.
- crab,
- diversity,
- community structure,
- environmental factors,
- Nanji Islands ground shallow sea area waters

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References(26)

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