深圳杨梅坑人工鱼礁区投礁前后大型底栖动物种类组成的变化

Change in species composition of macrobenthic fauna before and after administration of artificial reefs in Yangmeikeng in Shenzhen

根据深圳杨梅坑人工鱼礁区投礁前(2007年4月)和投礁后(2008年5月)2个航次调查所获底泥中大型底栖动物的资料,探讨了人工鱼礁对大型底栖动物种类组成的影响。结果表明:投礁一年后,人工鱼礁对大型底栖动物的养护作用已初步显现,海域内大型底栖动物种类数由投礁前的20种提高到34种,环节动物的比例有所增加;投礁后海域内大型底栖动物群落的种类组成也发生了较大变化,投礁前后的种类相似性仅为23.3%,优势种发生了较为明显的变化,由投礁前的方格皱纹蛤Periglypta lacerate变为投礁后的方格皱纹蛤Periglypta lacerate、弦毛内卷齿蚕Aglaophamus lyrochaeto和单鳃虫Nothria holobranchiata。

The change in species composition of macrobenthic fauna was described by the survey data from April of 2007（before establishment of artificial reefs） to May of 2008（after establishment of artificial reefs） to evaluate the influence of artificial habitat in Yangmeikeng in Shenzhen,Guangdong province,China.The protective effect on macrobenthic fauna was observed one year after the reefs had been put,the number of macrobenthos species increasing from 20 species to 34 species.The proportion of Molluscs was found to increase in all groups.The species composition of the macrobenthic fauna changed significantly after the reefs were put,with the similarity of only 23.3% before and after reefs administration,and dominant species changed from Periglypta lacerate before reefs establishment to Periglypta lacerate,Aglaophamus lyrochaeto and Nothria holobranchiata after then.