印度尼西亚加里曼丹中部牛牛湖开放水域与浮下大型浮游植物群浮游植物种类组成比较

Ardianor, S. Gumiri, S. Higashi
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摘要

在芦潭湖浮游植物垫下共发现74种浮游植物,其中浮游植物垫下IR高于开放水域OW。绿藻类、硅藻类和绿藻类居多。IR下密度和生物量高于OW,叶绿素-a则相反。然而,从统计上看,即使大型植物的存在略微归因于IR中浮游植物的高多样性和丰度,OW与IR之间也没有显著差异。通过双因素方差分析,两个站点的叶绿素-a均在低潮期高于高潮期。小球藻sp1。3-way方差分析和MCA分析表明,丰富的浮游植物种类间的密度差异显著。CCA结果表明,水位变化对其他物化因子的影响较大,通过对物化参数的约束,溶解氧、水位和温度与庐潭湖OW和IR测点部分丰富的浮游植物种类呈显著相关。
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Comparison of Phytoplankton Species Composition Between Open Water and Beneath Floating Macrophyte Mat in An Oxbow Lake of Central Kalimantan, Indonesia
A total of 74 species of phytoplankton were found in Lake Lutan where beneath the floating macrophyte mat, IR was higher than at open water zone, OW. Euglenoids, Diatoms and Chlorophytes predominantly occurred. Density and biomass were higher at IR than OW, and chlorophyll-a was the opposite. Statistically, it was, however, no significantly different between OW and IR, even if the presence of macrophytes slightly attributed high diversity and abundance of phytoplankton in IR. Chlorophyll-a was detected higher in low than in high water period on both sites by 2-ways ANOVA. Chlorella sp1. was significant in density among abundant phytoplankton species by 3-ways ANOVA and MCA. CCA revealed water level fluctuation greatly influenced other physico-chemical factors, and by constraining physico-chemical parameters, dissolved oxygen, water level and temperature were significantly correlated with some abundant species of phytoplankton at OW and IR sites of Lake Lutan.
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