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Abundance and conservation status of the Yangtze finless porpoise in the Yangtze River, China
Zhao, Xiujiang1,2; Barlow, Jay3; Taylor, Barbara L.3; Pitman, Robert L.3; Wang, Kexiong1; Wei, Zhuo1; Stewart, Brent S.4; Turvey, Samuel T.5; Akamatsu, Tomonari6; Reeves, Randall R.7; Wang, Ding1; Wang, D, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2008-12-01
Source PublicationBIOLOGICAL CONSERVATION
ISSN0006-3207
Volume141Issue:12Pages:3006-3018
Abstractmiddle and lower reaches of the Yangtze River, China. It is the only freshwater population of porpoises in the world and is currently listed as Endangered by IUCN. In November and December 2006 we used two boats and line transect methods to survey the entire current range of the population, except for two lakes (Poyang and Dongting). Sighting results were similar for both boats, so we pooled all data and analyzed them using two line transect models and a strip transect model. All models produced similar estimates of abundance (1111, 1225 and 1000). We then added independent estimates of the number of porpoises from the two lakes for a total estimate of approximately 1800 porpoises. Our findings indicate that the population continues to decline and that its distribution is becoming more fragmented. Our current estimate in the main river is slightly less than half the estimate from surveys between 1984 and 1991 (which was probably an underestimate). We also found an apparent gap in the distribution of porpoises between Yueyang and Shishou (similar to 150 km), where sightings had previously been common. Continued threats to Yangtze finless porpoises include bycatch in unregulated and unselective fishing, habitat degradation through dredging, pollution and noise, vessel strikes and water development. Immediate protective measures are urgently needed to ensure the persistence of finless porpoises in the Yangtze River. The survey design and analytical methods developed in this study might be appropriate for surveys of cetaceans in other river systems. (c) 2008 Elsevier Ltd. All rights reserved.; middle and lower reaches of the Yangtze River, China. It is the only freshwater population of porpoises in the world and is currently listed as Endangered by IUCN. In November and December 2006 we used two boats and line transect methods to survey the entire current range of the population, except for two lakes (Poyang and Dongting). Sighting results were similar for both boats, so we pooled all data and analyzed them using two line transect models and a strip transect model. All models produced similar estimates of abundance (1111, 1225 and 1000). We then added independent estimates of the number of porpoises from the two lakes for a total estimate of approximately 1800 porpoises. Our findings indicate that the population continues to decline and that its distribution is becoming more fragmented. Our current estimate in the main river is slightly less than half the estimate from surveys between 1984 and 1991 (which was probably an underestimate). We also found an apparent gap in the distribution of porpoises between Yueyang and Shishou (similar to 150 km), where sightings had previously been common. Continued threats to Yangtze finless porpoises include bycatch in unregulated and unselective fishing, habitat degradation through dredging, pollution and noise, vessel strikes and water development. Immediate protective measures are urgently needed to ensure the persistence of finless porpoises in the Yangtze River. The survey design and analytical methods developed in this study might be appropriate for surveys of cetaceans in other river systems. (c) 2008 Elsevier Ltd. All rights reserved.
SubtypeArticle
KeywordRiver Cetacean Distribution Endangered Finless Porpoise (Neophocaena Phocaenoides) Line Transect
Department[Zhao, Xiujiang; Wang, Kexiong; Wei, Zhuo; Wang, Ding] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Zhao, Xiujiang] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China; [Barlow, Jay; Taylor, Barbara L.; Pitman, Robert L.] SW Fisheries Sci Ctr, NOAA Fisheries, La Jolla, CA 92037 USA; [Stewart, Brent S.] Hubbs SeaWorld Res Inst, San Diego, CA 92109 USA; [Turvey, Samuel T.] Zool Soc London, Inst Zool, London NW1 4RY, England; [Akamatsu, Tomonari] Fisheries Res Agcy, NRIFE, Kamisu, Ibaraki 3140408, Japan; [Reeves, Randall R.] Okapi Wildlife Associates, Hudson, PQ J0P 1H0, Canada
Subject AreaBiodiversity Conservation ; Ecology ; Environmental Sciences
DOI10.1016/j.biocon.2008.09.005
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationNational Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018] ; National Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018] ; National Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018] ; National Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018]
Indexed BySCI
Language英语
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS SubjectBiodiversity Conservation ; Ecology ; Environmental Sciences
WOS IDWOS:000261574900009
WOS KeywordNEOPHOCAENA-PHOCAENOIDES-ASIAEORIENTALIS ; SOTALIA-FLUVIATILIS ; INIA-GEOFFRENSIS ; BANGLADESH ; CETACEANS ; DOLPHINS ; AMAZON ; BAIJI
Funding OrganizationNational Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018] ; National Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018] ; National Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018] ; National Basic Research Program of China [2007CB411600]; National Natural Science Foundation of China [30730018]
Citation statistics
Cited Times:83[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/7948
Collection期刊论文
Corresponding AuthorWang, D, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.SW Fisheries Sci Ctr, NOAA Fisheries, La Jolla, CA 92037 USA
4.Hubbs SeaWorld Res Inst, San Diego, CA 92109 USA
5.Zool Soc London, Inst Zool, London NW1 4RY, England
6.Fisheries Res Agcy, NRIFE, Kamisu, Ibaraki 3140408, Japan
7.Okapi Wildlife Associates, Hudson, PQ J0P 1H0, Canada
Recommended Citation
GB/T 7714
Zhao, Xiujiang,Barlow, Jay,Taylor, Barbara L.,et al. Abundance and conservation status of the Yangtze finless porpoise in the Yangtze River, China[J]. BIOLOGICAL CONSERVATION,2008,141(12):3006-3018.
APA Zhao, Xiujiang.,Barlow, Jay.,Taylor, Barbara L..,Pitman, Robert L..,Wang, Kexiong.,...&Wang, D, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.(2008).Abundance and conservation status of the Yangtze finless porpoise in the Yangtze River, China.BIOLOGICAL CONSERVATION,141(12),3006-3018.
MLA Zhao, Xiujiang,et al."Abundance and conservation status of the Yangtze finless porpoise in the Yangtze River, China".BIOLOGICAL CONSERVATION 141.12(2008):3006-3018.
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