登入選單
返回Google圖書搜尋
其他書名
Status Survey and Conservation Action Plan
出版IUCN, 1997
主題Nature / Birdwatching GuidesNature / Environmental Conservation & ProtectionNature / Animals / WildlifeNature / Endangered SpeciesScience / Environmental ScienceScience / Life Sciences / Zoology / General
ISBN28317042199782831704210
URLhttp://books.google.com.hk/books?id=DrEF0ga0IdgC&hl=&source=gbs_api
註釋Grebes are specialized waterbirds which inhabit marshlands and reed-fringed lakes. Their dependence on wetlands is total and as a result they are particularly vulnerable to changes in ecosystems and their deterioration. So adapted are they to the wetlands they inhabit that they are an ideal indicator of the health of wetlands and the changes taking place, changes often imperceptible to humans. Since c. 1970, two of the 22 recognized species of grebes have gone extinct and two others are in a critical situation. One of the greatest threats to their survival is loss of habitat. This action plan reviews the threats to grebes throughout the world and their current status and proposes a series of eight priority actions to ensure their survival.