Study on the maintenance system and conservation of the island ecosystem of Iriomote National park

西表国立公园岛屿生态系统维护体系及保护研究

基本信息

批准号：
11480152
负责人：
IZAWA Masako
金额：
$ 3.97万
依托单位：
University of the Ryukyus
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11480152/
关键词：
Iriomote cat Iriomote National Park Habitat use Veterinary study Conservation of ecosystem Reptiles Invasive species 島嶼生態系保全希少動物 GIS 齢査定繁殖特性動物相伝染性ウィルスキシノウエトカゲ

项目摘要

This project aims to conduct the inclusive surveys and discuss the management procedure of island ecosystem of the Iriomote, in Ryukyu archipelago, Japan. The study focused first on the Iriomote cat as the top of food chain of this island, secondly on the fauna of this island, and thirdly on the assessment of habitat condition including the effect of human activity.1. We obtained an annual life cycle of the Iriomote cat, which is one of the most important points to consider both of its ecology and conservation. Furthermore, continuous surveys clarified that the density and spacing pattern of this species varied between habitats in the island and that some males largely moved area to area. Habitat analysis using the radio-tracking data and GIS data has started.2. Clinical pathological examinations on rescued and dead Iriomote cats.3. Ecological, taxonomical, biogeographical surveys were conducted on fauna of Iriomote Island. Especially detailed analysis was done on reptiles together with South-eastern Asia samples. And ecological data were collected on the crested serpent eagle as well.4. Distribution and some ecological data on two invasive species, feral cats and soft-shelled turtles, were collected. Concerning to feral cats, possibilities of competition with Iriomote cats and infection of disease were suggested and pattern of dispersion of soft-shelled turtles was analyzed using allozyme electrophoresis.Based these results, conservational problems of the Iriomote cat and other endangered species of Iriomote Island were suggested. Important data on the Iriomote cat, fauna in Iriomote Island and interrelationship between them were obtained in this project. To the inclusive understanding of Iriomote ecosystem, we need the detailed ecology of each animals, comprehensive survey on whole island community, survey on flora and forest and human activity.

该项目旨在对日本琉球群岛西表岛的岛屿生态系统进行包容性调查并讨论管理程序。该研究首先关注的是该岛食物链顶端的西表猫，其次关注该岛的动物群，最后评估栖息地条件，包括人类活动的影响。1．我们获得了西表猫的年度生命周期，这是考虑其生态和保护的最重要的点之一。此外，持续的调查表明，该物种的密度和间距模式在岛上的不同栖息地之间存在差异，并且一些雄性在很大程度上会从一个地区迁移到另一个地区。利用无线电跟踪数据和GIS数据进行栖息地分析已经开始。2．西表猫获救及死亡的临床病理检查。 3．对西表岛的动物群进行了生态、分类、生物地理学调查。对爬行动物和东南亚样本进行了特别详细的分析。并对冠蛇雕进行了生态学数据的采集。 4．收集了野猫和甲鱼这两种入侵物种的分布和一些生态数据。对于野猫，提出了与西表猫竞争和感染疾病的可能性，并利用同种酶电泳分析了甲鱼的扩散模式。根据这些结果，提出了西表岛猫和其他濒危物种的保护问题。建议。该项目获得了有关西表岛猫、西表岛动物群以及它们之间相互关系的重要数据。为了全面了解西表岛生态系统，需要对每种动物进行详细的生态学调查，对整个岛屿群落进行全面的调查，对植物和森林以及人类活动进行调查。