南黄海鳀鱼产卵场大型底栖生物次级生产力研究

根据2001至2003年南黄海鳀鱼产卵期在鳀鱼产卵场33个站考察采集的大型底栖生物定量样品资料,利用Brey's(1990)的经验公式对调查海区进行了大型底栖生物栖息密度、生物量、次级生产力和P/B值的研究计算.结果表明,该海域大型底栖生物平均栖息密度为194.3 ind.m-2,平均生物量以去灰干重计,为4.08 g m-2,平均次级生产力以去灰干重计,为4.09 g m-2a-1.研究表明,生物量和次级生产力受水深的影响.平均P/B值在研究海域为1.32a-1.对研究结果与整个南黄海、渤海和东海的结果进行了比较与讨论,证明生产力随水深的加大而降低,P/B值随水温升高而升高.图2表1参25

SECONDARY PRODUCTION OF MACROBENTHOS FROM THE ANCHOVY SPAWNING GROUND IN THE SOUTHERN YELLOW SEA

Based on the data obtained in 2001 ～ 2003 from 33 stations, the secondary production of macrobenthos from the anchovy spawning ground in the southern Yellow Sea was studied using Brey's (1990) empirical formula. The results showed that the mean abundance was 194.3 ind. m-2, mean biomass in AFDW was 4.08 g m-2, and mean annual secondary production was 4.09 g (AFDW) m-2 a-1. There was a high production center from the Shandong Peninsula southeast to the Jiaozhou Bay. The biomass and production of macrobenthos should be affected by water depth. The average annual macrobenthic P/B ratio of in the research area was 1.32 a-1. The results were compared and discussed with all those obtained from the southern Yellow Sea, the Bohai Bay and the East China Sea. It is confirmed that the community production decreases with water depth and P/B ratio increases with water temperature. Fig 2, Tab 1, Ref 25