筼筜湖浮游植物细胞裂解率的时空变化

Temporal and spatial feature of phytoplankon in the Yuandang Lake

酶测定法作为现场测定浮游植物裂解速率的方法已被广泛应用于各种水体环境中。本论文对厦门市筼筜湖的浮游植物裂解速率的时空变化展开调查,探讨了浮游植物裂解速率的时空变化及其影响因素。调查期间,测定了内湖与外湖的溶解性酯酶活性,颗粒态酯酶活性及浮游植物裂解速率,同时测定了水体的叶绿素浓度及其他环境参数。综合分析各种指标,结果显示:浮游植物细胞裂解速率在空间上变化不大,时间上变化较大。在七月份由于水体中的病毒含量较高,浮游植物裂解速率较高。裂解速率在八月份与九月份降低,并且其数值变化不大。

The enzyme assay for determining the phytoplankton cell lysis rate has been widely utilized indifferent water environments. In this paper, we investigated the phytoplankton cell lysis rate in the Yuandang Lake so as to explore the spatial and temporal change and its influencing factors. During the investigation, the dissolved esterase activity, esterase activity in particulate and phytoplankton lysis rate were determined in the inner and outer lakes. The chlorophyll concentration in water and other environmental parameters were also measured. The results showed that phytoplankton cell lysis rate did not change spatially, but it changed temporally. The concentration of virus in water was higher in July, leading to a higher rate of phytoplankton lysis. The lysis rate of phytoplankton in the Yuandang Lake was decreased in August and September, and its value did not change obviously during that period.