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.

中文翻译：

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浙江省象山湾采用声网法和常规网法定量评估人工鱼礁上鱼群的情况

许多国家经常部署人工鱼礁，目的是在几年后加强捕鱼。这项研究的目的是分析在2011年至2017年的四年中，在浙江省象山湾进行的试点人工礁石系统部署对增强沉鱼组合的影响，采用声学方法和底部特拉梅尔网进行了调查。对包括鱼类生物量，物种丰富度和物种多样性在内的社区指数进行的比较表明，控制点和人工鱼礁在2012年部署后之间的趋势相对一致。鱼类密度（由海域散射系数的值表示）和鱼类生物量在2015年和2017年，人工鱼礁的比例明显高于控制点，人工珊瑚礁上的主要鱼类是拟棘鱼（Acanthopagrus schlegelii）和假海藻（Sebastiscus marmoratus），部署后40个月和64个月，这两个物种的平均体长明显增加。因此，人工鱼礁的建设似乎已经达到了吸引鱼类的主要目的，从而为象山湾的生态恢复做出了贡献。