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题名: River Dolphins Can Act as Population Trend Indicators in Degraded Freshwater Systems
作者: Turvey, Samuel T.1; Risley, Claire L.2; Barrett, Leigh A.3; Hao Yujiang4; Ding, Wang4
通讯作者: Turvey, ST (reprint author), Zool Soc London, Inst Zool, Regents Pk, London NW1 4RY, England.
关键词: YANGTZE FINLESS PORPOISE ; TOP PREDATORS ; EXTINCTION RISK ; LIFE-HISTORY ; SPECIES RICHNESS ; CLIMATE-CHANGE ; CONSERVATION ; BIODIVERSITY ; CHINA ; FISHERIES
刊名: PLOS ONE
发表日期: 2012-05-29
DOI: 10.1371/journal.pone.0037902
卷: 7, 期:5, 页:e37902
收录类别: SCI
文章类型: Article
部门归属: [Turvey, Samuel T.] Zool Soc London, Inst Zool, London NW1 4RY, England; [Risley, Claire L.] Univ Liverpool, Neston, Cheshire, England; [Barrett, Leigh A.] Freshwater Dolphin CIC, Madrid, Spain; [Hao Yujiang; Ding, Wang] Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan, Peoples R China
WOS标题词: Science & Technology
资助者: Marine Mammal Commission; Ocean Park Conservation Foundation Hong Kong; People's Trust for Endangered Species; Zoological Society of London's (ZSL's) EDGE of Existence programme; Natural Environment Research Council (NERC) Postdoctoral Fellowship; Royal Society University Research Fellowship
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
摘要: Conservation attention on charismatic large vertebrates such as dolphins is often supported by the suggestion that these species represent surrogates for wider biodiversity, or act as indicators of ecosystem health. However, their capacity to act as indicators of patterns or trends in regional biodiversity has rarely been tested. An extensive new dataset of >300 last-sighting records for the Yangtze River dolphin or baiji and two formerly economically important fishes, the Yangtze paddlefish and Reeves' shad, all of which are probably now extinct in the Yangtze, was collected during an interview survey of fishing communities across the middle-lower Yangtze drainage. Untransformed last-sighting date frequency distributions for these species show similar decline curves over time, and the linear gradients of transformed last-sighting date series are not significantly different from each other, demonstrating that
英文摘要: Conservation attention on charismatic large vertebrates such as dolphins is often supported by the suggestion that these species represent surrogates for wider biodiversity, or act as indicators of ecosystem health. However, their capacity to act as indicators of patterns or trends in regional biodiversity has rarely been tested. An extensive new dataset of >300 last-sighting records for the Yangtze River dolphin or baiji and two formerly economically important fishes, the Yangtze paddlefish and Reeves' shad, all of which are probably now extinct in the Yangtze, was collected during an interview survey of fishing communities across the middle-lower Yangtze drainage. Untransformed last-sighting date frequency distributions for these species show similar decline curves over time, and the linear gradients of transformed last-sighting date series are not significantly different from each other, demonstrating that these species experienced correlated population declines in both timing and rate of decline. Whereas species may be expected to respond differently at the population level even in highly degraded ecosystems, highly vulnerable (e.g. migratory) species can therefore display very similar responses to extrinsic threats, even if they represent otherwise very different taxonomic, biological and ecological groupings. Monitoring the status of river dolphins or other megafauna therefore has the potential to provide wider information on the status of other threatened components of sympatric freshwater biotas, and so represents a potentially important monitoring tool for conservation management. We also show that interview surveys can provide robust quantitative data on relative population dynamics of different species.
关键词[WOS]: YANGTZE FINLESS PORPOISE ; TOP PREDATORS ; EXTINCTION RISK ; LIFE-HISTORY ; SPECIES RICHNESS ; CLIMATE-CHANGE ; CONSERVATION ; BIODIVERSITY ; CHINA ; FISHERIES
语种: 英语
WOS记录号: WOS:000305349600039
ISSN号: 1932-6203
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16795
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.Univ Liverpool, Neston, Cheshire, England
3.Freshwater Dolphin CIC, Madrid, Spain
4.Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan, Peoples R China

Recommended Citation:
Turvey, Samuel T.; Risley, Claire L.; Barrett, Leigh A.; Hao Yujiang; Ding, Wang.River Dolphins Can Act as Population Trend Indicators in Degraded Freshwater Systems,PLOS ONE,2012,7(5):e37902
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