CAJ | 학술논문

2007-2008年在珠江八个入海口进行4个季节的生态调查数据,探讨了珠江八个入海口水域浮游桡足类的种类组成、多样性指数和丰度等指标及其与环境因素之间的关系,分析了优势种的季节数量变动及对浮游桡足类总数量的影响,并将本研究水域与珠江口外海水控制区浮游桡足类的生态特征做了比较.结果显示:周年共鉴定38种浮游桡足类,隶属3目10科23属.其中春季25种,夏季28种,秋季23种,冬季21种.优势种主要有中华异水蚤(Acartiella sinensis)、指状许水蚤(Schmackeria inopinus)、中华窄腹剑水蚤(Limnoithona sinensis)等种类,季节更替明显.四季平均丰度的变化趋势为春季(79.06 ind./L)>夏季(56.11 ind./L)>秋季(17.52 ind./L)>冬季(14.62 ind./L).珠江口夏季浮游桡足类出现的种类数和物种多样性指数均为四季最高.相关性分析表明,春季高锰酸盐指数对浮游桡足类分布的影响极为显著,夏、秋季对浮游桡足类的分布影响显著的环境因子分别为溶解氧和硅酸盐.
2007-2008년재주강팔개입해구진행4개계절적생태조사수거,탐토료주강팔개입해구수역부유뇨족류적충류조성、다양성지수화봉도등지표급기여배경인소지간적관계,분석료우세충적계절수량변동급대부유뇨족류총수량적영향,병장본연구수역여주강구외해수공제구부유뇨족류적생태특정주료비교.결과현시:주년공감정38충부유뇨족류,대속3목10과23속.기중춘계25충,하계28충,추계23충,동계21충.우세충주요유중화이수조(Acartiella sinensis)、지상허수조(Schmackeria inopinus)、중화착복검수조(Limnoithona sinensis)등충류,계절경체명현.사계평균봉도적변화추세위춘계(79.06 ind./L)>하계(56.11 ind./L)>추계(17.52 ind./L)>동계(14.62 ind./L).주강구하계부유뇨족류출현적충류수화물충다양성지수균위사계최고.상관성분석표명,춘계고맹산염지수대부유뇨족류분포적영향겁위현저,하、추계대부유뇨족류적분포영향현저적배경인자분별위용해양화규산염.
To study seasonal characteristics of planktonic copepods in 8 estuaries of Pearl River,the investigations in 4 seasons from May 2007 to February 2008 were performed.The species composition,diversity and abundance as well as their relationships with environmental factors in 8 estuaries of Pearl River were studied.Moreover,analysis of the quantitative changes of dominant species and the effects on the total number of planktonic copepods as well as the comparison of planktonic copepods ecological characteristics in the studied waters and controled waters off the Pearl River Estuary were performed.Total of 38 species were identified,among which,Acartiella sinensis,Schmackeria inopinus and Limnoithona sinensis were dominant species and obvious seasonal variations were observed.The average abundance of planktonic copepods of four seasons was 41.83 ind./L,and the highest was in spring (79.06 ind./L) ,followed by summer (56.11 ind./L) and autumn (17.52 ind./L) ,winter (14.62 ind./L) was lowest.Species number and diversity index were the highest in summer.Correlation analysis showed that in spring,CODMn had extremely significant impact on the distribution of planktonic copepods in spring,and it is dissolved oxygen and silicate that were the environmental factors which affected significantly the distribution of planktonic copepods in summer and autumn respectively.