论文部分内容阅读
本文为高州水库轮虫调查(1988)的第三部分。各水层轮虫数量的季节变化是:上层(5米以上水层),春季占82.5%,夏季占67%,冬季占65.2%,秋季由于轮虫种群向中层(10至15米)迁移,只占46.5%;下层(20至30米)各季节轮虫数量一般少于8%。除7、8月份外,它们的最大密度都在2-4米水层。轮虫垂直变化的特点主要是由占轮虫总量83%的8种优势轮虫所形成。文中还讨论了水温、水深、风和其他因素对轮虫垂直分布的巨大影响。
This article is the third part of the Gaozhou reservoir rotifer survey (1988). The seasonal variation of the number of rotifer in each aquifer is that in the upper layer (above 5 meters of water layer), 82.5% in spring, 67% in summer and 65.2% in winter. In autumn, due to the migration of rotifer population to middle layer (10 to 15 meters) Only 46.5%; the number of rotifers in the lower level (20 to 30 meters) in each season is generally less than 8%. With the exception of July and August, their maximum density is in the 2-4 m water layer. The vertical variation of rotifers is mainly characterized by eight dominant rotifers, accounting for 83% of the total number of rotifers. The article also discusses the huge impact of water temperature, depth, wind and other factors on the vertical distribution of rotifers.