CAJ | 학술논문

为掌握黄海中南部头足类的群落结构及数量分布,作者根据2010~2011年间春、秋、冬3个季节的底拖网调查资料,对黄海中南部头足类的种类组成、生物量分布及生物多样性进行了研究。结果显示：3个季节共捕获头足类13种,隶属3目6科6属。各季节的优势种及其生物量比重分别为：春季——双喙耳乌贼(Sepiola birostrata)50.07%、秋季——针乌贼(Sepia esculenta)40.88%、冬季——枪乌贼(Loligospp.)68.20%。各季节头足类平均资源密度分别为春季4.85 kg/km2、秋季2.52 kg/km2、冬季12.72 kg/km2,春秋两季间差异性不显著(P>0.05),冬季与其他两季差异性显著(P<0.05)。黄海中南部不同季节头足类的生物量分布变化较大,春季以西南及东北部密度最高,秋季以西南部密度最高,冬季以中部及东北部密度最高。头足类在各水深的垂直分布随季节变化。无论根据生物量还是丰度,种类丰富度指数、均匀度指数及 Shannon-Wiener 指数等多样性指数均以冬季最高,其次是春季,秋季最低。春季与冬季群落结构相似性较高,秋季与其他两个季节的群落结构相似性均较低。与1998~2000年同期相比,头足类种类数增加5种,相对资源密度增长了12%,枪乌贼类的生物量比重仍最高,耳乌贼类的比重提高,太平洋褶柔鱼的比重则大幅下降。
위장악황해중남부두족류적군락결구급수량분포,작자근거2010~2011년간춘、추、동3개계절적저타망조사자료,대황해중남부두족류적충류조성、생물량분포급생물다양성진행료연구。결과현시：3개계절공포획두족류13충,대속3목6과6속。각계절적우세충급기생물량비중분별위：춘계——쌍훼이오적(Sepiola birostrata)50.07%、추계——침오적(Sepia esculenta)40.88%、동계——창오적(Loligospp.)68.20%。각계절두족류평균자원밀도분별위춘계4.85 kg/km2、추계2.52 kg/km2、동계12.72 kg/km2,춘추량계간차이성불현저(P>0.05),동계여기타량계차이성현저(P<0.05)。황해중남부불동계절두족류적생물량분포변화교대,춘계이서남급동북부밀도최고,추계이서남부밀도최고,동계이중부급동북부밀도최고。두족류재각수심적수직분포수계절변화。무론근거생물량환시봉도,충류봉부도지수、균균도지수급 Shannon-Wiener 지수등다양성지수균이동계최고,기차시춘계,추계최저。춘계여동계군락결구상사성교고,추계여기타량개계절적군락결구상사성균교저。여1998~2000년동기상비,두족류충류수증가5충,상대자원밀도증장료12%,창오적류적생물량비중잉최고,이오적류적비중제고,태평양습유어적비중칙대폭하강。
In order to understand the community structure and distribution of Cephalopoda in central and southern Yellow Sea, the species composition, biomass distribution and stock of Cephalopoda were analyzed, based on the data collected by bottom trawl surveys in spring, autumn, and winter of 2010-2011. A total of 13 species of Cepha-lopoda, belonging to 3 orders, 6 families, and 6 genus, were harvested. Sepiola birostrata(50.07%) in Spring,Sepia esculenta (40.88%) in autumn, andLoligospp.(68.20%)in winter, were dominant by biomass. The Cephalopoda resource density was the highest in winter (12.72 kg/km2), followed by that in spring (4.85 kg/km2), and was the lowest in autumn (2.52 kg/km2). The difference was not significant( (P>0.05)) between spring and autumn. While the differences between winter and other seasons were significant (P<0.05). The spatial distribution of Cephalopoda biomass was greatly different between 3 seasons. The biomass density was the highest in the northeast and southwest in spring, in the southwest in autumn, and in the center and the northeast in winter. The vertical distri-bution of Cephalopoda biomass changed in different seasons. The biodiversity of Cephalopoda was analyzed, and the results showed that the diversity index including Margalef richness, Pielou evenness and Shannon-Wiener di-versity were the highest in winter, then in spring, and the lowest in autumn. The community similarity was also analyzed and the results showed that the community similarity index was the highest between spring and winter. Comparing 2010-2011 with 1998-2000, the number of Cephalopoda species increased by 5 species, and biomass density increased by 12%.Loligospp. was still the dominant biomass species. The biomass proportion of Sepiolidae spp. increased andTodarodes pacificusdeclined greatly.