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Yangtze finless porpoise in Yangtze River, China 2006
Zhao, X.J., J. Barlow, B.L. Taylor, R.L. Pitman, K.X. Wang, Z. Wei, B.S. Stewart, S.T. Turvey, T. Akamatsu, R.R. Reeves and D. Wang. 2008. Abundance and conservation status of the Yangtze finless porpoise in the Yangtze River, China. Biological Conservation. 141(12): 3006-3018

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Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

The purpose of this study was to search for baiji and evaluate the status of Yangtze finless porpoise. more

The Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis) is endemic to the 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). When on-effort, one boat surveyed 3,100 km with 240 sightings and a mean group size of 1.87 resulting in 0.077 sightings/km, while the other boat surveyed 3,065 km with 198 sightings and a mean group size of 2.05 resulting in 0.065 sightings/km. Baiji was announced to be likely extinct after this range-wide survey since not a single baiji was found during this survey (Turvey et al. 2007). [Turvey, S.T., R.L. Pitman, B.L. Taylor, J. Barlow, T. Akamatsu, L.A. Barrett, X.J. Zhao, R.R. Reeves, B.S. Stewart, K.X. Wang, Z. Wei, X.F. Zhang, L.T. Pusser, M. Richlen, J.R. Brandon and D. Wang. 2007. First human-caused extinction of a cetacean species?. Biology Letters. 3(5): 537-540.]

Biology > Mammals
Fresh water, I, Pacific, Cetacea

Geographical coverage
I, Pacific [Marine Regions]

Temporal coverage
6 November 2006 - 13 December 2006

Taxonomic coverage
Cetacea [WoRMS]

Chinese Academy of Sciences; Institute of Hydrobiology, moredata owner

Related datasets
Published in:
OBIS-SEAMAP: Spatial Ecological Analysis of Megavertebrate Populations, more

Based on this dataset
Zhao, X. et al. (2008). Abundance and conservation status of the Yangtze finless porpoise in the Yangtze River, China. Biol. Conserv. 141(12): 3006–3018., more

Dataset information:

Dataset status: Completed
Data type: Data
Data origin: Research: field survey
Metadatarecord created: 2012-11-27
Information last updated: 2012-11-27
All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy