CAJ | 학술논문

通过对2003年8～12月潭江下游及黄茅海入海口16个采样点采集的17种底栖动物进行分析.结果表明,各调查站位底栖动物的栖息密度范围为0～440 ind/m2,平均栖息密度为143.44 ind/m2.底栖动物的生物量范围为0～91.08 g/m2,平均生物量为21.71 g/m2.生物多样性在0～1.61,说明该调查水域大型底栖动物种类组成具有种类少,数量大,生物多样性指数不高的特点.如果按照多样性指数评价水体水质的标准,则该水体基本属于中污染到重污染类型,但同时软体动物高的生物量和密度指示该水体水体水质尚清洁.因此,在以底栖动物的多样性指数来评价水质时,还要结合环境指示种及优势种进行分析.
통과대2003년8～12월담강하유급황모해입해구16개채양점채집적17충저서동물진행분석.결과표명,각조사참위저서동물적서식밀도범위위0～440 ind/m2,평균서식밀도위143.44 ind/m2.저서동물적생물량범위위0～91.08 g/m2,평균생물량위21.71 g/m2.생물다양성재0～1.61,설명해조사수역대형저서동물충류조성구유충류소,수량대,생물다양성지수불고적특점.여과안조다양성지수평개수체수질적표준,칙해수체기본속우중오염도중오염류형,단동시연체동물고적생물량화밀도지시해수체수체수질상청길.인차,재이저서동물적다양성지수래평개수질시,환요결합배경지시충급우세충진행분석.
The zoobenthos collected from 16 sampling stations in lower reaches of Tan River and Huangmao Bay from Aug to Dec of 2003 were analyzed.Zoobenthos density in the 16 sampling stations ranged between 0-440 ind/m2, and the biomass ranged between 0-91.08 g/m2,the average density and biomass were 143.44 ind/m2 and 21.71 g/m2, respectively.The Shannon-Wiener diversity ranged between 0-1.61.Zoobenthos in the investigated area are lack of species, rich in density and low in diversity.Water quality of Lower reaches of Tan River and Huangmao Bay was estimated to be moderate or high polluted according to diversity index.However, high density of Mollusca indicated clearer water.Since zoobenthos diversity may be affected by physical character of the bottom, when zoobenthos diversity was used to assess water quality, species composition should also be considered.