Long-term zooplankton community records (1996?2017) for Lake Suwa (Japan)
Long-term zooplankton community records (1996?2017) for Lake Suwa (Japan)
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诹访湖（日本）的长期浮游动物群落记录（1996？2017）
DOI：
10.1007/s11284-017-1528-2
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发表时间：
2017
影响因子：
2
通讯作者：
Chang Kwang-Hyeon
中科院分区：
文献类型：
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作者：
Sakamoto Masaki;Nagata Takamaru;Hanazato Takayuki;Miyabara Yuichi;Ha Jin-Yong;Park Ho-Dong;Toda Hideshige;Oh Hye-Ji;Oda Yusuke;Chang Kwang-Hyeon
富营养化对水生态系统的影响仍然是水生态学中的一个重要课题，然而，最近在高度富营养化水体中的水质恢复的成功提出了新的研究潜力，关于再富营养化。通过恢复活动成功地减少了污水处理的营养负荷，导致浮游植物组成和生物量的巨大变化，特别是蓝藻优势的替代。在日本中部的浅水富营养化湖泊Suwa湖，由于20世纪70年代以来的水质恢复努力，已经出现了恢复。湖泊营养状态由富营养向中营养的改善伴随着各种变化，如浮游植物、底栖无脊椎动物和反食性池塘胡瓜鱼生物量迅速减少，水生植被（主要是浮叶植物）生物量增加。在再富营养化过程中，浮游动物是重要的，因为它们是湖泊生态系统中主要的次级生产者。1996年以来，因湖泊处于微囊藻水华严重的富营养化状态，信州大学内陆水环境研究教育中心每两周采集一次浮游动物样本，分析其种类组成。作为浅水富营养化系统中再富营养化的代表性湖泊，我们的浮游动物数据集可以用来了解生态系统结构和功能的变化。
The impact of eutrophication on aquatic ecosystems remains an important topic in aquatic ecology; however, recent successes in water quality restoration in highly eutrophicated water bodies present new research potential regarding re-oligotrophication. Successfully reducing nutrient loading from sewage treatment through restoration activities, induces large changes in phytoplankton composition and biomass, particularly replacement of cyanobacterial dominance. In Lake Suwa, a shallow eutrophic lake in central Japan, recovery has occurred due to water quality restoration efforts since the 1970s. The improvement of lake trophic state from hypertrophic to mesotrophic is accompanied by various changes, such as rapid decreases in biomass of phytoplankton, benthic invertebrates and planktivorous pond smelt, and increases in biomass of aquatic vegetation, mainly floating leaved plants. During re-oligotrophication, zooplankton are important because they are major secondary producers in lake ecosystems. In Lake Suwa, the Research and Education Center for Inland Water Environment, Shinshu University has collected bi-weekly zooplankton samples and analyzed species composition since 1996, when the lake was in a hypertrophic state with serious Microcystis blooms. Lake Suwa is one representative lake for re-oligotrophication in a shallow eutrophic system, and our zooplankton dataset can be used to understand the changes in ecosystem structure and function.