Research of role, biodiversity, and material metabolism in oligotrophic lakes

Akan-Punk湖位于寡核学水平，并在结构化期间产生小型植物（<2微米）的有机物质。在对比度，较大尺寸的植物浮游酮（>20微米，主要diatoms）在循环周期内主导。In May， phytoplankton distributed in deep layer （before formation of thermocline） derived from large sized phytoplankton （mainly diatoms） grown in surface layer （or near）。那些缓慢地下降到底部，保持了20%的光电合成活动，与表面层中的光电浮游生物活动相比。这个湖的初级产品是由皮托普兰克在5月和11月的循环期生产的，Inawashiro酸和寡核湖的生物量水平如此低，与阿坎-潘克湖相比。虽然营养浓缩水平很低，但这个湖在COY-D22-D2需要植物的光合作用（<0.5毫克C/升）。在分解有机物m中，细菌的增加和人口数目 ... More atter was also low （<5 X10-D15-D1 cells/l） as compared to neutral oligotrophic lake。这些事实意味着这个湖泊中有机物质的代谢与湖泊的一般类型有很大的不同。这个湖泊的生物多样性也与一般湖泊有明显的不同。主要生产酸湖的限制因素，湖泊中有机物质的起源，其分解剂必须在未来的未来清除。欧洲巴拉托湖研究了比较生物多样性的变化和寡光湖中主要植物浮游酮物种的选择，以及这一湖主导的Aphanizomenon flos-aqae， Anabaena sp. And Microcystis aeruginosa （Cyanophyce）。也是从五月至七月的水位上升中选择这些物种，但这种选择并不能证明原因。在这个湖上，营养集中，正磷酸盐集中的特殊变化，对水的温度是非常重要的。巴拉托湖生物多样性在最少集中的细胞人口中的主要代谢基础上升了水温度和磷酸盐集中的情况。Less（低）

Lake Akan-Panke is in oligotrophic level, and small sized phytoplankton (<2μm) produced organic matter dominated in stratified period. In contrast, large sized phytoplankton (>20μm, mainly diatoms) dominated in circulation period. In May, phytoplankton distributed in deep layer (before formation of thermocline) derived from large sized phytoplankton (mainly diatoms) grown in surface layer (or near). Those sank slowly to the bottom, and maintained 20% of photosynthetic activity as compared to the activity of phytoplankton in the surface layer. Primary production in this lake was maintained by picophytoplankton except for May and November in circulation period.Acid and oligotrophic Lake Inawashiro was so low level for biomass of phytoplankton as compared to Oligotrophic Lake Akan-Panke. Although nutrient concentration was so low level, this lake was lack in COィイD22ィエD2 needed for photosynthesis of phytoplankton (<0.5 mgC/l). In addition, population number of bacteria decomposed organic m … More atter was also low (<5X10ィイD15ィエD1 cells/l) as compared to neutral oligotrophic lake. These facts mean that metabolism of organic matter in this lake is so different to general type of lake. Biodiversity of this lake is also markedly different to general lakes. The limiting factor in acid lake for primary production, origin of organic matter in lake, and its decomposer must be made clear in near future.Eutrophic Lake Barato was researched to compared the variation in biodiversity and selection of dominant phytoplankton species in oligotrophic lake, and this lake dominated Aphanizomenon flos-aqae, Anabaena sp. And Microcystis aeruginosa (Cyanophyce). Although these species selected from May to July raised water temperature, the selection could not be proved the reason. In this lake, nutrient concentration, excepcially change of orthophosphate concentration, was so important with water temperature. Change of biodiversity in Lake Barato at least concerned cell population dominant diatom besides raise of water temperature and orthophosphate concentration. Less