Distribution of Mudskipper and Living Things in the Tideland Area of the Ariake Sea and Changes of its Environment

有明海潮间带弹涂鱼及生物的分布及其环境变化

基本信息

批准号：
02302082
负责人：
WATANABE Kiyoshi
金额：
$ 6.4万
依托单位：
Saga University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1992
项目状态：
已结题

项目摘要

The Results obtained by the studies which were carried out over the periods from 1990 to 1992 are summarized as follows:1. The numerical models for the current simulation of the Ariake Sea using the finite difference method and finite element one were developed. As the results, the numerical simulation of the current in the sea where the boundary conditions change with time were enabled. The complex flow patterns in the Ariake Sea were understood.2. The detail structures of flow near the shallow sea bottom were clarified on the basis of the field data. The pheological properties and mechanisms of resuspension of the bottom mad of tideland in the interior parts of the Ariake Sea were made clear.3. The simple and high sensitive methods of flow injection analysis of phosphate in the sea water and specific determination of the trace amounts of copper(II) in the natural waters using the homolysis reaction of porphyrin were developed. The determination of trace amounts of phosphate in the sea water by light scattering were first made in the field of analytical chemistry.4. The spatial distribution and temporal variations of the nitrogen compounds, and the relationship between the behavior of phosphate and nitrogen compounds and the environmental factors in the sea water of tideland area of the interior parts of the Ariake Sea were clarified.5. The nematoda fauna in the protected and unprotected area of mudskipper in the tideland of the interior parts of the Ariake Sea were made clear, and the relationship between nematode fauna and mudskipper's habitat was discussed.The appearance and distribution of mudskipper's larvae and juveniles and young shell of jackknife clam, and the relationship between those and environmental factors of tideland were clarified. In addition, the method for increase of mudskipper were developed.

1990年至1992年的研究结果如下： 1．使用有限差分法和有限元法开发了当前有明海模拟的数值模型。结果，可以对边界条件随时间变化的海流进行数值模拟。了解了有明海的复杂水流模式。 2．根据现场数据，阐明了浅海底附近流的详细结构。明确了有明海内陆滩涂底部的气候特征和再悬浮机制。 3．建立了简单、高灵敏度的流动注射分析海水中磷酸盐和利用卟啉均裂反应特异性测定天然水中痕量铜(II)的方法。光散射法测定海水中痕量磷酸盐是分析化学领域首次进行的。 4．明确了有明海内陆滩涂区海水中氮化合物的空间分布和时间变化，以及磷酸盐和氮化合物的行为与环境因子的关系。 5．明确了有明海内陆滩涂弹涂鱼保护区和非保护区的线虫区系，探讨了线虫区系与弹涂鱼栖息地的关系。弹涂鱼幼虫和幼贝的形态和分布阐明了刀蛤的生长规律及其与滩涂环境因子的关系。此外，还开发了弹涂鱼的增加方法。