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学科主题: Biology; Ecology; Evolutionary Biology
题名: Spatial and temporal extinction dynamics in a freshwater cetacean
作者: Turvey, Samuel T.1; Barrett, Leigh A.2; Hart, Tom1; Collen, Ben1; Hao Yujiang3; Zhang Lei3; Zhang Xinqiao3; Wang Xianyan3; Huang Yadong3; Zhou Kaiya4; Wang Ding3
通讯作者: Turvey, ST, Zool Soc London, Inst Zool, Regents Pk, London NW1 4RY, England
关键词: Lipotes vexillifer ; local ecological knowledge ; optimal linear estimation ; range collapse ; time-series data ; Yangtze River dolphin
刊名: PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
发表日期: 2010-10-22
DOI: 10.1098/rspb.2010.0584
卷: 277, 期:1697, 页:3139-3147
收录类别: SCI
文章类型: Article
部门归属: [Turvey, Samuel T.; Hart, Tom; Collen, Ben] Zool Soc London, Inst Zool, London NW1 4RY, England; [Barrett, Leigh A.] Vaquita Org Fdn, Oceanside, CA 92056 USA; [Hao Yujiang; Zhang Lei; Zhang Xinqiao; Wang Xianyan; Huang Yadong; Wang Ding] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Zhou Kaiya] Nanjing Normal Univ, Coll Life Sci, Jiangsu Key Lab Biodivers & Biotechnol, Nanjing 210097, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: Marine Mammal Commission ; Ocean Park Conservation Foundation Hong Kong ; People's Trust for Endangered Species ; EDGE ; NERC
类目[WOS]: Biology ; Ecology ; Evolutionary Biology
研究领域[WOS]: Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology
摘要: Geographical range contraction is a fundamental ecological characteristic of species population decline, but relatively little investigation has been conducted into general trends in the dynamic properties of range collapse. The Yangtze River dolphin or baiji (Lipotes vexillifer), probably the first large mammal species to have become extinct in over 50 years, was believed to have experienced major range collapse during its decline through progressive large-scale range contraction and fragmentation. This range-collapse model is challenged by a new dataset of 406 baiji last-sighting records collected from across the baiji's historical range during an interview survey of Yangtze fishing communities. Although baiji regional abundance may have varied across its range, analyses of the extensive new sighting series provide comprehensive evidence that baiji population decline was not associated with any major contraction in geographical range across the middle-lower Yangtze drainage, even in the decade immediately before probable global extinction of the species. Extinction risk in baiji was therefore seemingly not related to evidence of range collapse. Baiji apparently underwent large-scale periodic and seasonal movements across their range, and we propose that range contraction and fragmentation may not be general biogeographic characteristics for declining populations of mobile species in connected landscapes.
英文摘要: Geographical range contraction is a fundamental ecological characteristic of species population decline, but relatively little investigation has been conducted into general trends in the dynamic properties of range collapse. The Yangtze River dolphin or baiji (Lipotes vexillifer), probably the first large mammal species to have become extinct in over 50 years, was believed to have experienced major range collapse during its decline through progressive large-scale range contraction and fragmentation. This range-collapse model is challenged by a new dataset of 406 baiji last-sighting records collected from across the baiji's historical range during an interview survey of Yangtze fishing communities. Although baiji regional abundance may have varied across its range, analyses of the extensive new sighting series provide comprehensive evidence that baiji population decline was not associated with any major contraction in geographical range across the middle-lower Yangtze drainage, even in the decade immediately before probable global extinction of the species. Extinction risk in baiji was therefore seemingly not related to evidence of range collapse. Baiji apparently underwent large-scale periodic and seasonal movements across their range, and we propose that range contraction and fragmentation may not be general biogeographic characteristics for declining populations of mobile species in connected landscapes.
关键词[WOS]: YANGTZE FINLESS PORPOISE ; GEOGRAPHICAL RANGES ; CONSERVATION ; RISK ; FRAGMENTATION ; CONTRACTION ; COLLAPSE ; AREAS ; CHINA ; BAIJI
语种: 英语
WOS记录号: WOS:000282645700011
ISSN号: 0962-8452
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/13461
Appears in Collections:水生生物多样性与资源保护研究中心_期刊论文

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作者单位: 1.Zool Soc London, Inst Zool, London NW1 4RY, England
2.Vaquita Org Fdn, Oceanside, CA 92056 USA
3.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
4.Nanjing Normal Univ, Coll Life Sci, Jiangsu Key Lab Biodivers & Biotechnol, Nanjing 210097, Peoples R China

Recommended Citation:
Turvey, Samuel T.; Barrett, Leigh A.; Hart, Tom; Collen, Ben; Hao Yujiang; Zhang Lei; Zhang Xinqiao; Wang Xianyan; Huang Yadong; Zhou Kaiya; Wang Ding.Spatial and temporal extinction dynamics in a freshwater cetacean,PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,2010,277(1697):3139-3147
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