Western Ecological Research Center (WERC)

Biological Threats Research Program

Biological threats to wildlife can come from diseases, parasites, or invasive species, and can cause sweeping changes across important ecosystems. WERC scientists lead studies that investigate the source and effects of biological threats to environments across California, Nevada, and Pacific islands. Our projects include informing the restoration of ecosystems, for example by investigating effects and control of invasive plant or animal species concurrent with understanding factors that enhance native species, or discerning the role of natural predators in complex food webs that can control parasites infections in wildlife and humans. Click on the projects below to learn more.

Filter Total Items: 14
Date published: October 30, 2017
Status: Active

Aridlands Disturbances and Restoration Ecology

Desert landscapes are rapidly changing due to increases in invasive plant species, frequency of wildfires, urban and energy development, recreational use, military training, and climate variation. Dr. Todd Esque, USGS researchers, and collaborators are working together to investigate these changes and provide managers with key information that can be used to manage natural resources more...

Contacts: Todd Esque
Date published: May 22, 2015
Status: Completed

Monitoring Mercury's Risk to Wildlife in California Lakes

USGS scientists sampled grebes in California lakes to compare mercury levels in these predators versus the small fish they prey on—developing a new tool for water quality monitoring.