摘要
根据1998-2004年春、夏、秋、冬四季对胶州湾进行大面站综合调查监测的底栖生物多毛类资料,分析了多毛类优势种的季节变化和年际变化。结果表明:不同季节多毛类优势种组成和优势地位出现一定的变化,但不倒翁虫(Sternaspisscutata)、寡鳃齿吻沙蚕(Nephtysoligobranchia)和中蚓虫(Mediomastuscaliforniensis)在各季度月优势地位相对稳定;考察1998-2004年不同年份的多毛类优势种,发现不倒翁虫、寡鳃齿吻沙蚕在各个年份均居优势地位,变化较小,而其它的种类在不同的年份出现一定的变化,2003年和2004年索沙蚕(Lumbrinerislatreilli)优势度居首位,而在其它年度则没有成为优势种,这可能反映了近年来胶州湾生态环境出现了一定变化;通过考察主要优势种的分布和密度变化,可以发现这几个主要种都是广分布的小型种,在底质颗粒较细,有机质含量丰富的海域,不倒翁虫、中蚓虫、寡鳃齿吻沙蚕等数量较大;而在水流湍急、底质为砾石的7号和9号站,则很少分布。
The seasonal and yearly changes of dominant polychaete species were studied based on samples from 1998 to 2004 （sampling in February, May, August, and November every year）. The results showed that the dominant polychaete species composition changes seasonally. The three species; Sternaspis scutata, Nephtys oligobranchia and Mediomastus californiensis were the dominant ones every season. Sternaspis scutata and Nephtys oligobranchia were yearly dominant species from 1998 to 2004. The results also showed that all the dominant species were wide-ranged and small-sized species. The main factor governing the distribution of the dominant polychaete species was sediment. The fine sediment containing rich nutrition is favor to the dominant polychaete species, otherwise there is few in the coarse gravel [Acta Zoologica Sinica 52 （1）- 63-69, 2006]
出处
《动物学报》
SCIE
CAS
CSCD
北大核心
2006年第1期63-69,共7页
ACTA ZOOLOGICA SINICA
基金
中国科学院知识创新项目(No.KZCX3SW214)资助~~
