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Studiies on the biodiversity in sand dun lakes distributedin Niigaat and Aomori Prefecture

新泻县和青森县分布的沙丘湖生物多样性研究

基本信息

批准号：
17510193
负责人：
FUKUHARA Haruo
金额：
$ 2.41万
依托单位：
Niigata University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

项目摘要

Distribution of sand dune lakes which were fed from the spring water around sand dunes in Japan is restricted to Niigata and Aomori Prefecture. Its have been estimated to be high biodiversity because of mass amount of macrophytes. But, recently they have damaged by hard lakeshore, such as concrete and sampling of mass sand for architectural use. Urgent studies for sand dune lakes, particularly focused to biodiversity and eutrophication of lakes were conducted in Niigata and Aomori. Limnological description and researches on fauna and flora were conducted in sixty-five sand dune lakes (Niigata: 26, Aomori 39). Many species of benthic invertebrates, 173 taxa belonging to 5 phyla from Niigata and Kubikisand dune lake group, 196 taxa belonging to 8 phyla from Byoubusan sand dune lake group, 135 taxa belonging to 5 phyla from Shimokita sand dune lake group were recorded during study. Distribution of ten endangered species of invertebrates such as Cercion plagiosum from Niigata, 12 species such as Culumenella prashadi from Byoubusan were reported. Many species of aquatic macrophytes, 43 species such as Eulyale ferox including halophytes from Niigata, 10 species such as Caldesia parnasifflria from Byoubusan and 12 species such as Najas yezoensis from Shimokita were also reported. Our results show the protection of biodiversity in sand dune lakes in Japan is urgently needed.

在日本，由沙丘周围的泉水补给的沙丘湖的分布仅限于新泻和青森县。由于有大量的水生植物，因此被认为是高度生物多样性的。但是，最近他们已经损坏了硬湖岸，如混凝土和采样的大量沙子用于建筑用途。在新泻和青森进行了沙丘湖紧急研究，特别侧重于湖泊的生物多样性和富营养化。对65个沙丘湖（新泻：26个，青森：39个）进行了湖泊学描述和动物群和植物群研究。结果表明，新泻沙丘湖群和久美山沙丘湖群共记录到底栖无脊椎动物5门173种，白釜山沙丘湖群共记录到8门196种，下北沙丘湖群共记录到5门135种。报道了新泻的条纹尾水鱼等10种濒危无脊椎动物和碧釜山的普氏库蚊等12种濒危无脊椎动物的分布。此外，还报道了许多水生植物，其中包括来自新泻的盐生植物Eulyale ferox等43种，来自釜山的Caldesia parnasifflria等10种，来自下北的Najas yezoensis等12种。我们的研究结果表明，在日本沙丘湖泊的生物多样性保护是迫切需要的。