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：
14380277
负责人：
IZAWA Masako
金额：
$ 7.68万
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：
2002
资助国家：
日本
起止时间：
2002 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14380277/
关键词：
Iriomote Island Iriomote National Park Insular environment Iriomote cat Conservation of island ecosystem Invasive species Reptiles of Ryukyu Archipelago Plants of Ryukyu Archipelago 島嶼生態系カエル類種の多様性ヒサカキ属爬虫類遺伝的多様性外来種系統地理学

项目摘要

This project aims to conduct the inclusive surveys and to discuss the total management procedure of island ecosystem of the Iriomote Island, in Ryukyu Archipelago, Japan. The study focused first on the Iriomote cat as the key species of this island ecosystem, secondly on the fauna and flora at the lower trophic level in community and environmental factors, and thirdly on the assessment of habitat condition including the artificial effects.1.We obtained the field data on the ecology of the Iriomote cat, especially home range, habitat utilization and movement pattern, partly using the GIS data, and analyzed the affecting biological and non-biological factors. Furthermore, we compared the results with those of the Tsushima leopard cat, which was also the insular species of wild felid.2.We analyzed the three factors closely relating to the ecology of Iriomote cats, abundance and diversity of Amphibia, land development and occurrence of traffic accidents.3.Taxonomical and biogeographical surveys were conducted on fauna and flora of this island. Especially, detailed analysis were done on reptiles and plant species together with South-eastern Asia samples.4.We conducted the situation and effects by two invasive species those were considered to have a strong impact on fauna of this island, feral cat and marine toad.Based on these results, we discussed the conservation of the endangered Iriomote cat and ecosystem of Iriomote Island. The situation and affecting factors of Iriomote cats and characteristics of terrestrial fauna and flora of this area were clarified in this project. Future surveys on the detailed analysis should be needed to understand the Iriomote ecosystem.

该项目旨在进行包容性调查并讨论日本琉球群岛西表岛岛屿生态系统的总体管理程序。该研究首先关注作为该岛生态系统关键物种的西表猫，其次关注群落和环境因素中较低营养级的动植物群，第三关注包括人为影响在内的栖息地条件评估。 1.我们部分利用GIS数据，获取了西表猫生态的现场数据，特别是活动范围、栖息地利用和运动模式，并分析了影响其的生物和非生物因素。此外，我们还与对马豹猫（也是野生猫科动物的岛种）的结果进行了比较。2.分析了与西表猫的生态、两栖动物的丰度和多样性、土地开发和发生密切相关的三个因素。 3.对该岛的动植物进行了分类学和生物地理调查。特别是，对爬行动物和植物物种以及东南亚样本进行了详细分析。4.我们对两种被认为对该岛动物群有强烈影响的入侵物种（野猫和海蟾蜍）的状况和影响进行了调查。基于这些结果，我们讨论了濒临灭绝的西表猫和西表岛生态系统的保护。本项目明确了西表猫的现状和影响因素以及该地区的陆生动植物群特征。未来的调查需要进行详细分析，以了解西表生态系统。