CAJ | 학술논문

根据2008年9月~2009年2月在胶州湾中部海域进行的逐月定点底拖网调查,对该海域秋、冬季大型无脊椎动物群落结构及多样性变化进行了初步研究.结果表明,胶州湾秋、冬季共捕获大型无脊椎动物60种,其中甲壳动物和软体动物是主要的无脊椎动物类群;优势种组成具有较明显的月间变化,主要为口虾蛄Oratosquilla oratoria、短蛸Octopus ocellatus、脊腹褐虾Crangon affinis等湾内定居性种类及洄游性较小的种类.Margalef种类丰富度指数范围为1.998~4.669,自9月起逐月递减,11月达到最低值,随后又逐月升高,2月达到最高值;Shannon-Wiener多样性指数和Pielou均匀度指数范围分别为1.325~2.500和0.422~0.693,逐月变化趋势与物种丰富度指数基本一致.多样性指数与海域温度、盐度和深度等环境因子均无显著性相关.多元统计分析表明,胶州湾中部海域秋、冬季大型无脊椎动物群落可划分为2个时间组群;组群间群落种类组成结构差异不显著.
근거2008년9월~2009년2월재효주만중부해역진행적축월정점저타망조사,대해해역추、동계대형무척추동물군락결구급다양성변화진행료초보연구.결과표명,효주만추、동계공포획대형무척추동물60충,기중갑각동물화연체동물시주요적무척추동물류군;우세충조성구유교명현적월간변화,주요위구하고Oratosquilla oratoria、단소Octopus ocellatus、척복갈하Crangon affinis등만내정거성충류급회유성교소적충류.Margalef충류봉부도지수범위위1.998~4.669,자9월기축월체감,11월체도최저치,수후우축월승고,2월체도최고치;Shannon-Wiener다양성지수화Pielou균균도지수범위분별위1.325~2.500화0.422~0.693,축월변화추세여물충봉부도지수기본일치.다양성지수여해역온도、염도화심도등배경인자균무현저성상관.다원통계분석표명,효주만중부해역추、동계대형무척추동물군락가화분위2개시간조군;조군간군락충류조성결구차이불현저.
Based on the monthly bottom trawl surveys in the central waters of Jiaozhou Bay from September 2008 to February 2009, a preliminary study on the variations of community structure and diversity of macroinvertebrates during autumn and winter was carried out. The results indicated that there were 60 macroinvertebrate species caught in all, among which, crustaceans and mollusks were the major components. The dominant species varying among months were mainly the resident species and seasonal migratory ones such as mantis shrimp (Oratosquilla oratoria), shortarm octopus (Octopus ocellatus) and Japanese sand shrimp (Crangon affinis). Margalef's species richness index, fluctuating between 1.998 and 4.669 1, decreased from September 2008, then reached the lowest value in December 2008, and finally increased to its highest value in February 2009. The ranges of the Shannon-Wiener diversity index and Pielou's evenness index were 1.325~2.500 and 0.422~0.693 respectively. The variations of both indices basically followed the same tendency with that of species richness index. There was no positive correlation between species diversity index and environmental factors, i.e. temperature, salinity and depth measured at the spot. The analysis of multivariate methods showed that two temporal groups were identified for macroinvertebrate community during autumn and winter. There were no distinct differences in species compositions of community structure between these two groups.