NDLI: Degradation of icefishes (Salangidae) in the Yangtze River basin of China: threats and strategies

Content Provider	Springer Nature Link
Author	Wang, Zhongsuo Shi, Jieqiang Xu, Chongren Lei, Guangchun
Copyright Year	2008
Abstract	The Yangtze River basin has been a major area in terms of icefish diversity conservation and fisheries. In the past two to five decades, however, the wild icefish resources have degraded continuously in both the brackish estuary and freshwater portions of the basin. Stocks have declined in all icefish fisheries, resulting in an annual fishing yield decrease from the maximum of 4,000 metric tons to less than 1,300 metric tons in this river basin. The stocks decline significantly (t = −6.74, df = 1, p < 0.001) correlated with icefish fishing stress in the estuary. Meanwhile, species composition changed markedly with smaller sized icefish species increased relative to the number of larger ones in terms of their relative abundances. Following the stocks decline and size reduction, icefish commercial value decreased to the point that 91.9% of the traditional icefish-producing waters (57 out of 62) terminated their icefish fisheries and some species became locally extinct. Based on the degradation process, we suggest that these changes in stock size and species diversity are the result of overfishing and habitat loss and degradation. We propose a number of measures aimed at the conservation and restoration of the wild icefish resources in the Yangtze River basin.
Starting Page	109
Ending Page	117
Page Count	9
File Format	PDF
ISSN	03781909
Journal	Environmental Biology of Fishes
Volume Number	86
Issue Number	1
e-ISSN	15735133
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-07-22
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Stock decline Local extinction Economic extinction Habitat Diversity Conservation Nature Conservation Environment Animal Systematics/Taxonomy/Biogeography Zoology Freshwater & Marine Ecology
Content Type	Text
Resource Type	Article
Subject	Aquatic Science Ecology, Evolution, Behavior and Systematics

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