Quantitative assessment of fish assemblages on artificial reefs using acoustic and conventional netting methods, in Xiangshan Bay, Zhejiang Province, China
文献类型： 外文期刊
作者： Yuan, Xingwei 1 ; Jiang, Yazhou 1 ; Zhang, Hui 1 ; Jin, Yan 1 ; Ling, Jianzhong 1 ;
作者机构： 1.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Minist Agr & Rural Affairs, Key Lab East China Sea Fishery Resources Exploita, Shanghai 200090, Peoples R China
关键词： acoustic survey; artificial reefs; bottom trammel net; dominant species; fish assemblages; Xiangshan Bay
期刊名称：JOURNAL OF APPLIED ICHTHYOLOGY （ 影响因子：0.612； 五年影响因子：0.82 ）
ISSN： 0175-8659
年卷期： 2021 年 37 卷 3 期
页码：
收录情况： SCI
摘要： Artificial reefs are often deployed by many countries for the purpose of enhancing fishing after a period of several years. The objective of this study was to analyze the effect of a pilot artificial reef system deployment in enhancing the demersal fish assemblages, investigated using both acoustic methods and bottom trammel nets, during four years between 2011 and 2017, in Xiangshan Bay, Zhejiang Province, China. Comparisons of community indices, including fish biomass, species richness and species diversity, indicated relatively consistent trends between the control sites and the artificial reefs following their deployment in 2012. Fish density, represented by the value of the nautical area scattering coefficient, and fish biomass were significantly higher on the artificial reefs than at the control sites in 2015 and 2017, and species richness and diversity were significantly greater at the reefs from 2013 to 2017. Blackhead seabream (Acanthopagrus schlegelii) and false kelpfish (Sebastiscus marmoratus) were the dominant fishes on the artificial reefs, and the average body lengths of these two species were significantly greater 40 and 64 months after deployment. Thus, construction of the artificial reefs appears to have achieved their primary purpose as fish-attraction devices, thereby contributing to ecological restoration in Xiangshan Bay.
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