Seasonal variation in community structure and body length of dominant copepods around artificial reefs in Xiaoshi Island, China   总被引：2，自引：0，他引：2  

孙晓红  梁振林  邹吉新  王龙祥 《中国海洋湖沼学报》2013,31(2):282-289

This study aims to investigate the seasonal variations in copepod community structure and prosome length of dominant species from March 2009 to January 2010 around artificial reefs in Xiaoshi Island,Yellow Sea,Weihai,China.Samples were collected using two types of plankton net(Model I and Model II) for different-sized copepods.The number of taxon was calculated from the data of both the net types,while the copepod abundance was done using the samples from Model II only.Sixteen species of planktonic copepods,including 5 dominant species,were recorded.Results reveal that Oithona similis was the first dominant species from March to June,and was replaced by Paracalanus parvus in September;both dominated the copepod community in January.Acartia hongi was the second dominant species from March to September.Centropages abdominalis was the third dominant species from March to June,and was replaced by O.similis in September and Corycaeus affinis in January.C.affinis was the fourth dominant species in September.Population density of the dominant copepods was compared with that of other similar regions.We found that the dominant species were mostly small copepods(<1 mm) except for adult Centrapages abdominalis.Seasonal variation in prosome length of O.similis,C.abdominalis,and C.affinis,and their copepodites were studied for the first time in China.For P.parvus and A.hongi,seasonal trends in prosome length variation were similar with those in Jiaozhou Bay,Yellow Sea,Qingdao,China,in a similar temperate domain.The results are helpful for future calculation of copepod biomass and production,and for investigation of the relationship between copepods and fish resources.  相似文献   

鼠尾藻生长、藻体成分及其生境的初步研究   总被引：1，自引：0，他引：1  

姜宏波  田相利  董双林  缪国荣  邹吉新  包杰 《海洋湖沼通报》2009,(2)

对威海小石岛附近海区鼠尾藻(Sargassum thunbergii)的生长、藻体成分和水体中氮、磷等营养元素的月份变动情况进行了初步研究.结果表明,研究海区水体中硝酸氮的含量具有明显的月份变化,5～10月含量较低,11～4月含量较高;相对于硝酸态氮,氨氮的含量较低,随月份变动也较小;总无机氮的含量变化与硝酸氮含量变化趋于一致;总无机磷含量随月份的变动也较大,在2～6月含量较低,11～1月含量较高.鼠尾藻生长有着明显的月份变化,4～5月生长最快,6～7月藻体达到最大长度;侧枝一般在4月开始出现,7月达到最长.对鼠尾藻体内的碳、氮、磷、碳水化合物以及色素进行测定的结果表明,鼠尾藻体内的碳含量变化较小,一般在25.6%～33.0%之间;氮的含量变化较大,12～5月含量较高,超过3%,7～11月含量较低,低于3%;磷的含量也具有很大的波动,在11～4月含量较高,5～10月含量较低.色素含量具有明显的月份变化,12～3月含量较高,7～10月含量较低.碳水化合物含量在4～7月时较高,最低出现在8～9月.  相似文献