In the five years since we first reviewed the status of the world's fishes (Moyle and Leidy
1992), there has been an explosion of new information on the conservation of aquatic …

Not since the Cretaceous era ended some 65 million years ago have losses been so rapid
and great. If the trend continues, one quarter of the world's species may be gone by 2050 …

Habitat fragmentation is one of the most ubiquitous and serious environmental threats
confronting the long-term survival of plant and animal species worldwide. As species …

The status and security of fishes in North American deserts have steadily declined in this
century due to man's activities in this naturally fragile region. We address genetic aspects of …

In proportion to the entire fauna, loss of species may be as great in temperate regions as in
tropical regions. To test the validity of this statement we analyzed the status of the native fish …

Modifications of lower watersheds such as water abstraction, channel modification, land-use
changes, nutrient enrichment, and toxic discharge can set off a cascade of events upstream …

The number of community types occurring within landscapes is an important, but often
unprotected, component of biological diversity. Generally applicable protocols for …

Conservation efforts for imperiled fishes in western United States have included numerous
translocations, either among natural localities or from nature to propagation facilities then …

The highly endemic fish fauna of the Colorado River downstream from Glen Canyon Dam
has been largely extirpated. Damming, diversion. and other human regulation stabilized the …

Recent invasion of low-elevation streams in the Colorado River basin of western North
America by the nonnative red shiner (Cyprinella lutrensis) seems linked with the dramatic …