The newest update to the IUCN Red List has downgraded the status of the Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) from Endangered to Critically Endangered, reflecting the deteriorating state of arguably the world’s most degraded river system. The downgrade follows a survey last year that counted only 1,000 animals, a 50 percent decline from 2006.
“The Baiji (a unique freshwater dolphin) only recently went extinct on the Yangtze River,” Jonathan Baillie, Director of Conservation Programs at the Zoological Society of London says. “If we now lose the Yangtze Finless Porpoise, future generations will undoubtedly wonder if we were ignorant, incompetent or both.”
The Yangtze River ecosystem has been decimated by overpopulation, pollution, boat traffic, massive dam-building, illegal electro-fishing, and habitat loss among other impacts.
The Yangtze finless porpoise now joins a host of other animals in the river system considered Critically Endangered including the Chinese alligator (Alligator sinensis), the Yangtze sturgeon (Acipenser dabryanus), the Yangtze soft-shell turtle (Rafetus swinhoei), and the Chinese paddlefish (Psephurus gladius) which may already be extinct.
The Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) has fallen to Critically Endangered. Photo by: Xiaoqiang Wang.
(04/16/2013) A survey late last year found that the Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) population has been cut in half in just six years. During a 44-day survey, experts estimated 1,000 river porpoises inhabited the river and adjoining lakes, down from around 2,000 in 2006. The ecology of China’s Yangtze River has been decimated the Three Gorges Dam, ship traffic, pollution, electrofishing, and overfishing, making it arguably the world’s most degraded major river. These environmental tolls have already led to the likely extinction of the Yangtze river dolphin (Lipotes vexillifer), or baiji, and possibly the Chinese paddlefish (Psephurus gladius), which is one of the world’s longest freshwater fish.
(05/01/2012) Six years after the Yangtze river dolphin (Lipotes vexillifer), or baiji, was declared “functionally extinct” by scientists, another marine mammal appears on the edge of extinction in China’s hugely degraded Yangtze River. In less than two months, 32 Yangtze finless porpoises (Neophocaena asiaeorientalis asiaeorientalis), a subspecies of the finless porpoise, have been dead found in Dongting and Poyang Lakes in the Yangtze, reports the World Wide Fund for Nature (WWF).
(02/23/2010) In 2006 a survey in China to locate the endangered Yangtze River dolphin, known as the baiji, found no evidence of its survival. Despondent, researchers declared that the baiji was likely extinct. Four years later and the large charismatic marine mammal is not only ‘likely extinct’, but in danger of being forgotten, according to a surprising new study ‘Rapidly Shifting Baselines in Yangtze Fishing Communities and Local Memory of Extinct Species’ in Conservation Biology. Lead author of the study, Dr. Samuel Turvey, was a member of the original expedition in 2006. He returned to the Yangtze in 2008 to interview locals about their knowledge of the baiji and other vanishing megafauna in the river, including the Chinese paddlefish, one of the world’s largest freshwater fish. In these interviews Turvey and his team found clear evidence of ‘shifting baselines’: where humans lose track of even large changes to their environment, such as the loss of a top predator like the baiji.
(02/09/2010) The first ever national survey of pollution in China shows a nation that has paid for its economic growth in environmental pollution.