Seasonal dynamics of phytoplankton in two warm temperate reservoirs: association of taxonomic composition with temperature
Seasonal dynamics of phytoplankton in two warm temperate reservoirs: association of taxonomic composition with temperature
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DOI：
10.1093/plankt/fbi095
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发表时间：
2006-01-01
影响因子：
2.1
通讯作者：
Chrzanowski, TH
中科院分区：
文献类型：
--
作者：
Grover, JP;Chrzanowski, TH
浮游植物组成的变化，观察了2.7年在两个温暖的温带水库在得克萨斯州中北部，乔池湖（JPL）和山湖（EML），并分析了温度，光照，溶解营养盐，悬浮物营养比和水文变量。浮游植物组成和环境变量的主要变化是季节性的，与年温度循环密切相关。浮游植物的组成是每年周期性的，与丝状蓝藻，羽状硅藻和绿藻占主导地位的夏季，而其他绿藻，中心硅藻，隐藻，甲藻和其他鞭毛虫要么占主导地位，在其他季节或保持丰富的全年。几个主要类群的季节性动态可以表示的生态位响应模型的基础上，温度单独，虽然在许多环境变量的季节性变化可能有助于浮游植物组成的变化。这种季节性变化主导了这些数据，但浮游植物组成和环境变量的年际变化也出现在研究后期的干燥天气。
Variations in phytoplankton composition were observed over 2.7 years in two warm temperate reservoirs in north central Texas, Joe Pool Lake (JPL) and Eagle Mountain Lake (EML), and analysed in relation to temperature, light, dissolved nutrients, seston nutrient ratios and hydrological variables. The dominant variations in both phytoplankton composition and environmental variables were seasonal and strongly related to the annual temperature cycle. Phytoplankton composition was annually periodic, with filamentous cyanobacteria, pennate diatoms and chlorophytes dominant in summer, while other chlorophytes, centric diatoms, cryptophytes, dinoflagellates and other flagellates either dominated in other seasons or remained abundant year round. The seasonal dynamics of several major taxa could be represented by a niche response model based on temperature alone, although seasonal variations in many environmental variables likely contributed to variation in phytoplankton composition. Such seasonal variations dominated these data, but interannual variation in phytoplankton composition and environmental variables also appeared to result from dry weather late in the study.