CAJ | 학술논문

2009年10月在辽东湾西部海域进行了14个站位的大型底栖动物调查,共发现大型底栖动物99种,其中多毛类44种,软体动物13种,甲壳动物39种,其他类群3种.调查海域内IRI指数排名前十位的种中,多毛类和甲壳动物各占60%和40%,其中前三位的是日本双边帽虫(Amphictene japonica)、二齿半尖额涟虫(Hemileucon bidentatus)和滩拟猛钩虾(Harpiniopsis vadiculus).调查海域内大型底栖动物的总平均丰度为2387.1个/m2,总平均生物量为11.16 g/m2,整个调查海域内大型底栖动物呈现出高丰度低生物量的现状.调查海域内大型底栖动物的香农-威纳多样性指数为0.8881~4.626,平均值为3.556;丰富度指数为1.197~5.474,平均值为3.426;均匀度指数为0.213~0.9248,平均值为0.7714.以40%的相似性尺度,取样站可被划分为5个大型底栖动物站组.通过大型底栖动物多样性分析,本文认为该海域的底栖生态状况良好.
2009년10월재료동만서부해역진행료14개참위적대형저서동물조사,공발현대형저서동물99충,기중다모류44충,연체동물13충,갑각동물39충,기타류군3충.조사해역내IRI지수배명전십위적충중,다모류화갑각동물각점60%화40%,기중전삼위적시일본쌍변모충(Amphictene japonica)、이치반첨액련충(Hemileucon bidentatus)화탄의맹구하(Harpiniopsis vadiculus).조사해역내대형저서동물적총평균봉도위2387.1개/m2,총평균생물량위11.16 g/m2,정개조사해역내대형저서동물정현출고봉도저생물량적현상.조사해역내대형저서동물적향농-위납다양성지수위0.8881~4.626,평균치위3.556;봉부도지수위1.197~5.474,평균치위3.426;균균도지수위0.213~0.9248,평균치위0.7714.이40%적상사성척도,취양참가피화분위5개대형저서동물참조.통과대형저서동물다양성분석,본문인위해해역적저서생태상황량호.
Macrobenthos was investigated at 14 stations in the western waters of Liaodong Bay in October 2009. In total, 99 species were found, including 44 species of Polychaeta, 13 species of Mollusca, 39 species of Crustacea, and 3 species of other taxonomies. Polychaeta and Crustacea were accounted for 60%and 40%respectively in the top 10 IRI;the top three were Amphictene japonica , Hemileucon bidentatus and Harpiniopsis vadiculus . The av-erage abundance of macrobenthos was 2387.1 ind./m2, and the average biomass was 11.16 g/m2 in the sampling sites. The range of Shannon-Wiener index of macrobenthos in the investigated waters was 0.8881~4.626, with an average of 3.556. The range of corresponding Margalef’s richness index was 1.197~5.474, with an average of 3.426. The range of Pielou's evenness index was 0.213~0.9248, with an average of 0.7714. A total of five macrobenthic groups were split out from these stations at 40%similarity. According to the result of this investigation, the macrobenthic community structure was not disturbed.