摘要
于2009年8月在微山湖取样进行了小型底栖生物的调查研究.结果表明,夏季小型底栖生物平均丰度为341±132ind.10cm-2,平均生物量为152.7±58.0μgdwt.10cm-2.共鉴定出5个小型底栖生物类群.其中,按丰度自由生活线虫为最优势类群,比例达97.9%;其他类群依次为桡足类、介型类、甲壳类幼体和动吻类.小型底栖生物分布在2～5cm的次表层沉积物的比例为61.1%,线虫分布在2～5cm的比例为61.7%.本研究为进一步了解小型底栖生物群落、种类组成,以及为淡水底栖生态系统结构和功能的深入研究提供参考.
A sampling meiobenthos were studied about Weishan lake in summer, 2009 （August）. The results showed that the average meiobenthos abundance was 341±132ind·10cm^-2, average biomass was 152. 7±58.0 μgdwt·10cm^-2. In our study, five groups of small benthic organisms were i- dentified. According to the abundance, free-living nematodes were the most dominant group, which dominance was 97. 9%; Other groups followed according to priority were Copepoda, Ostracoda, Nauplii and Kinorhyncha. Distribution of meiobenthos was 61.1% in the 2-5 cm surface sediments, while nematodes in the 2-5 cm were 61.4%. Our studies could supply reference to the futher research on the small benthic communities, species composition, as well as the research on structure and function of freshwater benthic ecosystem.
出处
《聊城大学学报（自然科学版）》
2009年第4期51-54,共4页
Journal of Liaocheng University:Natural Science Edition
基金
山东省中青年科学家奖励基金课题(2006BS02014)
