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学科主题: Biodiversity Conservation; Ecology; Environmental Sciences
题名: Rapidly Shifting Baselines in Yangtze Fishing Communities and Local Memory of Extinct Species
作者: Turvey, Samuel T.1; Barrett, Leigh A.2; Hao Yujiang3; Zhang Lei3; Zhang Xinqiao3; Wang Xianyan3; Huang Yadong3; Zhou Kaiya4; Hart, Tom1; Wang Ding3
通讯作者: Turvey, ST, Zool Soc London, Inst Zool, Regents Pk, London NW1 4RY, England
关键词: baiji ; generational amnesia ; local ecological knowledge ; perceptions ; traditional ecological knowledge ; Yangtze paddlefish ; Yangtze River dolphin
刊名: CONSERVATION BIOLOGY
发表日期: 2010-06-01
DOI: 10.1111/j.1523-1739.2009.01395.x
卷: 24, 期:3, 页:778-787
收录类别: SCI
文章类型: Article
部门归属: [Turvey, Samuel T.; Hart, Tom] 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 ; ZSL's EDGE of Existence programme ; Natural Environment Research Council
类目[WOS]: Biodiversity Conservation ; Ecology ; Environmental Sciences
研究领域[WOS]: Biodiversity & Conservation ; Environmental Sciences & Ecology
摘要: Local ecological knowledge can provide a unique source of data for conservation, especially in efforts to investigate the status of rare or possibly extinct species, but it is unlikely to remain constant over time. Loss of perspective about past ecological conditions caused by lack of communication between generations may create "shifting baseline syndrome," in which younger generations are less aware of local species diversity or abundance in the recent past. This phenomenon has been widely discussed, but has rarely been examined quantitatively. We present new evidence of shifting baselines in local perception of regional species declines and on the duration of "community memory" of extinct species on the basis of extensive interviews with fishers in communities across the middle-lower Yangtze basin. Many Yangtze species have experienced major declines in recent decades, and the Yangtze River dolphin or baiji (Lipotes vexillifer) and Yangtze paddlefish (Psephurus gladius) may have become extinct during the 21(st) century. Although informants across all age classes were strongly aware of the Yangtze ecosystem's escalating resource depletion and environmental degradation, older informants were more likely to recognize declines in two commercially important fish species, Reeves' shad (Tenualosa reevesii) and Yangtze pufferfish (Takifugu fasciatus), and to have encountered baiji and paddlefish in the past. Age was also a strong predictor of whether informants had even heard of baiji or paddlefish, with younger informants being substantially less likely to recognize either species. A marked decrease in local knowledge about the Yangtze freshwater megafauna matched the time of major population declines of these species from the 1970s onwards, and paddlefish were already unknown to over 70% of all informants below the age of 40 and to those who first started fishing after 1995. This rapid rate of cultural baseline shift suggests that once even megafaunal species cease to be encountered on a fairly regular basis, they are rapidly forgotten by local communities.
英文摘要: Local ecological knowledge can provide a unique source of data for conservation, especially in efforts to investigate the status of rare or possibly extinct species, but it is unlikely to remain constant over time. Loss of perspective about past ecological conditions caused by lack of communication between generations may create "shifting baseline syndrome," in which younger generations are less aware of local species diversity or abundance in the recent past. This phenomenon has been widely discussed, but has rarely been examined quantitatively. We present new evidence of shifting baselines in local perception of regional species declines and on the duration of "community memory" of extinct species on the basis of extensive interviews with fishers in communities across the middle-lower Yangtze basin. Many Yangtze species have experienced major declines in recent decades, and the Yangtze River dolphin or baiji (Lipotes vexillifer) and Yangtze paddlefish (Psephurus gladius) may have become extinct during the 21(st) century. Although informants across all age classes were strongly aware of the Yangtze ecosystem's escalating resource depletion and environmental degradation, older informants were more likely to recognize declines in two commercially important fish species, Reeves' shad (Tenualosa reevesii) and Yangtze pufferfish (Takifugu fasciatus), and to have encountered baiji and paddlefish in the past. Age was also a strong predictor of whether informants had even heard of baiji or paddlefish, with younger informants being substantially less likely to recognize either species. A marked decrease in local knowledge about the Yangtze freshwater megafauna matched the time of major population declines of these species from the 1970s onwards, and paddlefish were already unknown to over 70% of all informants below the age of 40 and to those who first started fishing after 1995. This rapid rate of cultural baseline shift suggests that once even megafaunal species cease to be encountered on a fairly regular basis, they are rapidly forgotten by local communities.
关键词[WOS]: PSEPHURUS-GLADIUS MARTENS ; GULF-OF-CALIFORNIA ; ECOLOGICAL KNOWLEDGE ; CHINESE PADDLEFISH ; CONSERVATION ; BIODIVERSITY ; FISHERIES ; RIVER ; BIOLOGY ; MANAGEMENT
语种: 英语
WOS记录号: WOS:000277690900020
ISSN号: 0888-8892
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/13477
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.; Hao Yujiang; Zhang Lei; Zhang Xinqiao; Wang Xianyan; Huang Yadong; Zhou Kaiya; Hart, Tom; Wang Ding.Rapidly Shifting Baselines in Yangtze Fishing Communities and Local Memory of Extinct Species,CONSERVATION BIOLOGY,2010,24(3):778-787
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