https://doi.org/10.82144/be229cd4 https://seamap.env.duke.edu/dataset/559 https://www.gbif.org/dataset/9bc44547-ec0b-4496-994a-cb950cbfe98b https://obis.org/dataset/0e1e9f4c-2e74-41f6-8d9d-df50ee034a46 Zhao Xiujiang Institute of Hydrobiology, Chinese Academy of Sciences Primary contact zhaoxiujiang@foxmail.com www.ihb.ac.cn OBIS-SEAMAP Marine Geospatial Ecology Lab, Duke University

A328 LSRC building Durham NC 27708 US

seamap-contact@duke.edu https://seamap.env.duke.edu OBIS-SEAMAP Marine Geospatial Ecology Lab, Duke University

A328 LSRC building Durham NC 27708 US

seamap-contact@duke.edu https://seamap.env.duke.edu distributor Zhao Xiujiang Institute of Hydrobiology, Chinese Academy of Sciences Primary contact zhaoxiujiang@foxmail.com www.ihb.ac.cn owner 2025-07-31 eng Original provider: Zhao Xiujiang, Institute of Hydrobiology, Chinese Academy of Sciences Dataset credits: Zhao Xiujiang, Institute of Hydrobiology, Chinese Academy of Sciences Wang Ding, Institute of Hydrobiology, Chinese Academy of Sciences Abstract: The Yangtze finless porpoise (<i>Neophocaena phocaenoides asiaeorientalis</i>) 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. Occurrence GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type.xml Observation GBIF Dataset Subtype Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_subtype.xml Marine Biology Visual sighting N/A 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). This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC) 4.0 License. https://seamap.env.duke.edu/dataset/559 Oceans 112.198 121.372 32.301 29.441 2006-11-06 2006-12-13 Scientific names are based on the Integrated Taxonomic Information System (ITIS). subspecies Neophocaena phocaenoides asiaeorientalis Yangtze finless porpoise The purpose of this study was to search for baiji and evaluate the status of Yangtze finless porpoise. notPlanned Zhao Xiujiang Institute of Hydrobiology, Chinese Academy of Sciences Primary contact zhaoxiujiang@foxmail.com www.ihb.ac.cn NA NA NA Zhao Xiujiang owner NA zd_559 2025-07-31T14:33:04-04:00 dataset Xiujiang, Z. 2013. Yangtze finless porpoise in Yangtze River, China 2006. Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/be229cd4. OBIS-SEAMAP Dataset Page UTF-8 Interactive map https://seamap.env.duke.edu/dataset/559 FGDC Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/559/fgdc EML Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/559/eml OBIS-SEAMAP zd_559 zd_559 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.