The Nation's living resources and the habitats on which they depend are undergoing constant change. Climate change, invasive species, and a plethora of human activities are causing natural resource management and conservation efforts to become increasingly challenging and complex.

To help meet this challenge, USGS's Status and Trends of Biological Resources Program supports and provides the collection and analysis of biological data and the development of scientifically sound approaches to measure, predict, assess, and report the status and trends of our living resources for use by natural resource managers, scientists, and the general public.

Western Ecological Research Center scientists collect long-term data on a variety of species of importance to land managers of the Pacific southwest, including amphibians, migratory birds and endangered species. Another focus is development of new and more accurate monitoring protocols for species of concern.

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