Interactions Between Physical, Chemical and Biological Properties of Water in Eutrophic Lake Koyama in Tottori.
Interactions Between Physical, Chemical and Biological Properties of Water in Eutrophic Lake Koyama in Tottori.
复制标题
鸟取富营养化小山湖水的物理、化学和生物特性之间的相互作用。
DOI：
10.2965/jswe.19.71
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
T. Nagai
中科院分区：
文献类型：
--
作者：
H. Fujiyama;K. Fukuta;K. Ikuta;Jun Ozasa;T. Nagai
1991年和1992年对鸟取县小山富营养化湖的物理、化学和生物特性的实际情况及其相互关系进行了调查。在这两年中，蓝绿藻都在初夏（以水藻为主）和秋季（以微囊藻为主）开花。5月和6月水体的低氮，尤其是水溶性氮，可能是水藻暴发的主要原因。鱼腥草使水中的不溶性氮丰富，鱼腥草消失后，水中的可溶氮增加。微囊藻在Anabaena消失后不久就占据了主导地位。它在十月开花。似乎很难用水体氮浓度的变化来解释微囊藻的爆发。而磷的浓度对蓝藻的生长始终是足够的。结果发现，这两种蓝绿藻都能抑制其他藻类的生长。水温在8月达到最高值，是水华爆发的主要因素之一。然而，也很难用水温的变化来解释微囊藻的爆发。CFU的峰值时间与藻类的峰值时间接近，说明细菌与藻类之间存在相互关系。
The actual conditions of physical, chemical and biological properties and interrelationship between them in the eutrophic Lake Koyama in Tottori were investigated in 1991 and 1992.In the both years, the blue-green algae made bloom in early summer (dominantly, Anabaena solitaria) and fall (dominantly, Microcystis wesenbergii). The outbreak of Anabaena might be brought about by low N, especially water soluble N of the water in May and June. Anabaena made the water rich in the non-soluble N. The soluble N of the water increased after the disappearance of Anabaena.Microcystis became dominant soon after the disappearance of Anabaena. It made bloom in October. It seemed difficult to explain the outbreak of Microcystis by the change in the N concentration of the water. The concentration of P, however, was always enough for the growth of blue-green algae. It was found out that the both blue-green algae suppressed the growth of other algae.The water temperature became maximum in August and seemed one of the major factors of bloom outbreak. It, however, was also difficult to explain the outbreak of Microcystis by the change in the water temperature.The peak time of the CFU was close to that of the algae, which suggested the interrelationship between bacteria and algae.