The Endangered Species Act (ESA) requires that the National Marine Fisheries Service
(NMFS) review the status of listed species under its authority at least every five years and …

Traditional analysis in population genetics evaluates differences among groups of
individuals and, in some cases, considers the effects of distance or potential barriers to gene …

Migratory species are particularly vulnerable to climate change because habitat throughout
their entire migration cycle must be suitable for the species to persist. For migratory species …

Widespread population extirpations and the consequent loss of ecological, genetic, and life‐
history diversity can lead to extinction of evolutionarily significant units (ESUs) and species …

In April 2008, in response to the sudden collapse of Sacramento River fall Chinook salmon
(SRFC) and the poor status of many west coast coho salmon populations, the Pacific Fishery …

This monograph presents an extensive review of the biology and management of Chinook
salmon and steelhead in the Central Valley of California. Relevant data and publications on …

A quantitative protocol was developed to determine conservation status of all 129 freshwater
fishes native to California. Seven (5%) were extinct; 33 (26%) were found to be in danger of …

Protected evolutionarily significant units (ESUs) of salmonids require objective and
measurable criteria for guiding their recovery. In this report, we develop a method for …

Summary 1 The addition of large water storage dams to rivers in California's Central Valley
blocked access to spawning habitat and has resulted in a dramatic decline in the distribution …

Abstract North American green sturgeon, Acipenser medirostris, was petitioned for listing
under the Endangered Species Act (ESA). The two questions that need to be answered …