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River Dolphins Can Act as Population Trend Indicators in Degraded Freshwater Systems
Turvey, Samuel T.1; Risley, Claire L.2; Barrett, Leigh A.3; Hao Yujiang4; Ding, Wang4; Turvey, ST (reprint author), Zool Soc London, Inst Zool, Regents Pk, London NW1 4RY, England.
2012-05-29
Source PublicationPLOS ONE
ISSN1932-6203
Volume7Issue:5Pages:e37902
AbstractConservation 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; 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.
SubtypeArticle
KeywordYangtze Finless Porpoise Top Predators Extinction Risk Life-history Species Richness Climate-change Conservation Biodiversity China Fisheries
Department[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
DOI10.1371/journal.pone.0037902
WOS HeadingsScience & Technology
Funding OrganizationMarine 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 ; 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 ; 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 ; 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
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000305349600039
WOS KeywordYANGTZE FINLESS PORPOISE ; TOP PREDATORS ; EXTINCTION RISK ; LIFE-HISTORY ; SPECIES RICHNESS ; CLIMATE-CHANGE ; CONSERVATION ; BIODIVERSITY ; CHINA ; FISHERIES
Funding OrganizationMarine 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 ; 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 ; 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 ; 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
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/16795
Collection水生生物多样性与资源保护研究中心_期刊论文
Corresponding AuthorTurvey, ST (reprint author), Zool Soc London, Inst Zool, Regents Pk, London NW1 4RY, England.
Affiliation1.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
GB/T 7714
Turvey, Samuel T.,Risley, Claire L.,Barrett, Leigh A.,et al. River Dolphins Can Act as Population Trend Indicators in Degraded Freshwater Systems[J]. PLOS ONE,2012,7(5):e37902.
APA Turvey, Samuel T.,Risley, Claire L.,Barrett, Leigh A.,Hao Yujiang,Ding, Wang,&Turvey, ST .(2012).River Dolphins Can Act as Population Trend Indicators in Degraded Freshwater Systems.PLOS ONE,7(5),e37902.
MLA Turvey, Samuel T.,et al."River Dolphins Can Act as Population Trend Indicators in Degraded Freshwater Systems".PLOS ONE 7.5(2012):e37902.
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