[Seasonal dynamics of macrozoobenthos community structure in Xiangxi River].
To study the seasonal dynamics of macrozoobenthos community in Xiangxi River, the individuals of macrozoobenthos in the River were quantitatively monitored. A total of 197 taxa belonging to 6 class and 68 families were collected, among which, Baetis spp., Epeorus spp., and Nemoura spp. were the dominant groups, and their compositions varied with seasons. The macrozoobenthos community was most complicated in winter, followed by in spring and autumn, and the simplest in summer. Gather-collector was the main component of functional feeding groups in Xiangxi River system, followed by scraper, predator, and filter-collector, while shredder only accounted for a small part. Canonical correspondence analysis showed that the factors affecting the macrozoobenthos community were dissimilar among seasons. In summer and autumn, nutrients had greater effects; and in all seasons, water depth had definite effects.
Jiang
Wan-Xiang
WX
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China. jiangwx99@163.com
Jia
Xing-Huan
XH
Zhou
Shu-Chan
SC
Li
Feng-Qing
FQ
Tang
Tao
T
Cai
Qing-Hua
QH
D000818:Animals; D002681:China; D005618:Fresh Water / Q000032:analysis; D007448:Invertebrates / Q000145:classification / Q000254:growth & development* / Q000502:physiology*; D011157:Population Dynamics; D045483:Rivers; D012621:Seasons