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题名: Distribution patterns of Yangtze finless porpoises in the Yangtze River: implications for reserve management
作者: Zhao, X.1, 2; Wang, D.1; Turvey, S. T.3; Taylor, B.4; Akamatsu, T.5, 6
通讯作者: Wang, D (reprint author), Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.
关键词: acoustic survey ; encounter rate ; finless porpoise ; habitat preferences ; line transect sampling ; moving average ; reserve design
刊名: ANIMAL CONSERVATION
发表日期: 2013-10-01
DOI: 10.1111/acv.12019
卷: 16, 期:5, 页:509-518
收录类别: SCI
文章类型: Article
部门归属: [Zhao, X.; Wang, D.] Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Peoples R China; [Zhao, X.] China Three Gorges Corp, Beijing, Peoples R China; [Turvey, S. T.] Zool Soc London, Inst Zool, London NW1 4RY, England; [Taylor, B.] SW Fisheries Sci Ctr, NOAA Fisheries, La Jolla, CA USA; [Akamatsu, T.] Fisheries Res Agcy, NRIFE, Ibaraki, Japan; [Akamatsu, T.] Japan Sci & Technol Agcy, CREST, Tokyo, Japan
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China [30730018, 31170501]; Knowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-EW-Z-4]; Ministry of Agriculture of China; China Three Gorges Corporation
类目[WOS]: Biodiversity Conservation ; Ecology
研究领域[WOS]: Biodiversity & Conservation ; Environmental Sciences & Ecology
摘要: The Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) is a highly threatened cetacean endemic to the middle and lower reaches of the Yangtze River that has suffered a dramatic decline in recent decades. We characterize and quantify recent distribution patterns of porpoises in the Yangtze River in order to facilitate strategic management of existing in situ cetacean reserves and maximize effective utilization of limited conservation resources. We calculated porpoise relative abundance (encounter rate) using a 1-km moving average along the Yangtze main stem based on a combined visual and acoustic survey conducted in 2006. We then evaluated conservation priority areas based on encounter rates along the river. High-porpoise density areas (>0.20porpoiseskm(-1)) cover approximately one-third (33.9%, 599km) of the survey area and contain approximately two-thirds of the porpoise population, making them priority areas for porpoise conservation. In contrast, low-porpoise density areas (0.05porpoiseskm(-1)) cover 28.8% (509km) of the survey area but contain only 4.5% of the porpoise population, and may already be of little value for porpoise conservation. Five high-priority porpoise conservation sites and five sections that now contain few or no surviving porpoises are identified. Proposed spatial modifications to existing reserves and associated conservation recommendations are made for five existing protected areas along the Yangtze main stem, and we emphasize that some additional river sections should urgently be designated as new protected areas given their high porpoise density. Our approach for identifying conservation priorities may provide lessons for reserve design and management in other protected area networks.
英文摘要: The Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) is a highly threatened cetacean endemic to the middle and lower reaches of the Yangtze River that has suffered a dramatic decline in recent decades. We characterize and quantify recent distribution patterns of porpoises in the Yangtze River in order to facilitate strategic management of existing in situ cetacean reserves and maximize effective utilization of limited conservation resources. We calculated porpoise relative abundance (encounter rate) using a 1-km moving average along the Yangtze main stem based on a combined visual and acoustic survey conducted in 2006. We then evaluated conservation priority areas based on encounter rates along the river. High-porpoise density areas (>0.20porpoiseskm(-1)) cover approximately one-third (33.9%, 599km) of the survey area and contain approximately two-thirds of the porpoise population, making them priority areas for porpoise conservation. In contrast, low-porpoise density areas (0.05porpoiseskm(-1)) cover 28.8% (509km) of the survey area but contain only 4.5% of the porpoise population, and may already be of little value for porpoise conservation. Five high-priority porpoise conservation sites and five sections that now contain few or no surviving porpoises are identified. Proposed spatial modifications to existing reserves and associated conservation recommendations are made for five existing protected areas along the Yangtze main stem, and we emphasize that some additional river sections should urgently be designated as new protected areas given their high porpoise density. Our approach for identifying conservation priorities may provide lessons for reserve design and management in other protected area networks.
关键词[WOS]: FRESH-WATER CETACEAN ; NEOPHOCAENA-PHOCAENOIDES ; CONSERVATION ; ABUNDANCE ; EXTINCTION ; LAST ; ASIAEORIENTALIS ; DOLPHINS ; TRENDS ; COUNT
语种: 英语
WOS记录号: WOS:000330037000007
ISSN号: 1367-9430
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19965
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.Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Peoples R China
2.China Three Gorges Corp, Beijing, Peoples R China
3.Zool Soc London, Inst Zool, London NW1 4RY, England
4.SW Fisheries Sci Ctr, NOAA Fisheries, La Jolla, CA USA
5.Fisheries Res Agcy, NRIFE, Ibaraki, Japan
6.Japan Sci & Technol Agcy, CREST, Tokyo, Japan
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