thumbnail

Extinction rates in North American freshwater fishes, 1900-2010

BioScience

By:

Links

Abstract

Widespread evidence shows that the modern rates of extinction in many plants and animals exceed background rates in the fossil record. In the present article, I investigate this issue with regard to North American freshwater fishes. From 1898 to 2006, 57 taxa became extinct, and three distinct populations were extirpated from the continent. Since 1989, the numbers of extinct North American fishes have increased by 25%. From the end of the nineteenth century to the present, modern extinctions varied by decade but significantly increased after 1950 (post-1950s mean = 7.5 extinct taxa per decade). The modern extinction rate for North American freshwater fishes is conservatively estimated to be 877 times greater than the background extinction rate for freshwater fishes (one extinction every 3 million years). Reasonable estimates project that future increases in extinctions will range from 53 to 86 species by 2050.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Extinction rates in North American freshwater fishes, 1900-2010
Series title:
BioScience
Volume
62
Issue:
9
Year Published:
2012
Language:
English
Publisher:
University of California
Publisher location:
Berkeley, CA
Contributing office(s):
Southeast Ecological Science Center
Description:
11 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
798
Last page:
808
Other Geospatial:
North America