CAJ | 학술논문

研究了洋山港海域桡足类的周年生态特征.结果显示,洋山港桡足类的优势种为四刺窄腹剑水蚤(Limnoithona tetraspina)、太平洋纺锤水蚤(Acartia pacifica)、真刺唇角水蚤(Labidocera euchaeta)、针刺拟哲水蚤(Paracalanus aculeatus)、双毛纺锤水蚤(Acartia bifilosa)、小毛猛水蚤(Microsetella norvegica)、瘦拟哲水蚤(Paracalanus gracilis)和小拟哲水蚤(Paracalanus parvus);桡足类丰度季节变化显著(F=2.11, P<0.05),春(28.44个/L±19.16个/L)>夏(18.60个/L±14.81个/L)>冬(10.98个/L±3.65个/L)>秋(10.57个/L±4.45个/L);生物量则为夏(12359.1 mg/L±18438.1 mg/L)>秋(7796.6 mg/L±1348.6 mg/L)>冬(2944.8 mg/L±1680.9 mg/L)>春(1401.0 mg/L±1057.3 mg/L).桡足类丰度的周年变化呈现双峰型特征,生物量变化呈现单峰型特征.多变量分析显示,优势种的数量变化对洋山港桡足类群落丰度和生物量的季节变化起主要作用.小洋山码头受人类干扰严重,桡足类丰度和多样性与大洋山码头已出现差异,春、冬季小洋山码头的多样性指数(H′)高于大洋山码头,除秋季外,小洋山码头的均匀度指数(J)都高于大洋山码头.
연구료양산항해역뇨족류적주년생태특정.결과현시,양산항뇨족류적우세충위사자착복검수조(Limnoithona tetraspina)、태평양방추수조(Acartia pacifica)、진자진각수조(Labidocera euchaeta)、침자의철수조(Paracalanus aculeatus)、쌍모방추수조(Acartia bifilosa)、소모맹수조(Microsetella norvegica)、수의철수조(Paracalanus gracilis)화소의철수조(Paracalanus parvus);뇨족류봉도계절변화현저(F=2.11, P<0.05),춘(28.44개/L±19.16개/L)>하(18.60개/L±14.81개/L)>동(10.98개/L±3.65개/L)>추(10.57개/L±4.45개/L);생물량칙위하(12359.1 mg/L±18438.1 mg/L)>추(7796.6 mg/L±1348.6 mg/L)>동(2944.8 mg/L±1680.9 mg/L)>춘(1401.0 mg/L±1057.3 mg/L).뇨족류봉도적주년변화정현쌍봉형특정,생물량변화정현단봉형특정.다변량분석현시,우세충적수량변화대양산항뇨족류군락봉도화생물량적계절변화기주요작용.소양산마두수인류간우엄중,뇨족류봉도화다양성여대양산마두이출현차이,춘、동계소양산마두적다양성지수(H′)고우대양산마두,제추계외,소양산마두적균균도지수(J)도고우대양산마두.
To understand the annual variation of the copepod community structure, abundance, dominant species and diversity in the Yangshan Port, samples were collected monthly from March 2009 to February 2010. The results showed that the dominant species were Limnoithona tetraspina, Acartia pacifica, Labidocera euchaeta, Paraca-lanus aculeatus, Acartia bifilosa, Microsetella norvegica, Paracalanus gracilis and Paracalanus parvus. The sea-sonal variation in the mean abundance was remarkable(F=2.11, P<0.05), and the order from high to low was spring (28.44 ind/L±19.16 ind/L), summer (18.60 ind/L±14.81 ind/L), winter (10.98 ind/L±3.65 ind/L), and autumn (10.57 ind/L±4.45 ind/L). The order of biomass from high to low was summer (12359.1 mg/L±18438.1 mg/L), autumn (7796.6 mg/L±1348.6 mg/L), winter (2944.8 mg/L±1680.9 mg/L), and spring (1401.0 mg/L±1057.3 mg/L). The copepod abundance showed single peak in one year, and the copepod biomass showed double peaks in one year. The results of multivariate analysis showed that the variation of dominant species made a great contribution to the variation of copepod community. Xiaoyang was the main shipping docks with bigger ship flux than Dayang. The copepod community had already showed difference between Dayang and Xiaoyang. The Shannon Weaver index of Xiaoyang was higher than that of Dayang both in spring and winter. But the Pielou index of Xiaoyang was higher than Dayang in spring, summer and winter.