ESA

NWR Spending Dashboard image.

NWR Spending Dashboard

This small dashboard illustrates funding across National Wildlife Refuges in the U.S. and is based on annual report data from the U.S. Fish and Wildlife Service. Check it out to discover the amounts and locations of expenditures for growing the …

The Endangered Species Act 101: Habitat

Wildlife depend on habitat to survive. Megan Evansen, our Conservation Science & Policy Analyst, looks at the Sierra Nevada bighorn sheep as an example of how endangered species rely on critical habitat for food and shelter.
Defining habitat to promote conservation under the ESA image.

Defining habitat to promote conservation under the ESA

The Supreme Court’s opinion in Weyerhaeuser Co. v. United States Fish and Wildlife Service, 139 S. Ct. 361 (2018), raises important questions about the scope of the Endangered Species Act's protections for critical habitat. In a short ruling, the …

Limited patterns among ESA 4(b)(2) critical habitat exclusions

Areas can be excluded from critical habitat (CH) designations for economic, national security, or other relevant reasons under 4(b)(2) of the U.S. Endangered Species Act (ESA). We are aware of no analyses that quantify the rates or patterns of use. …
Habitat Patrol image.

Habitat Patrol

Laws and regulations that protect imperiled species and their habitats are often limited by inadequate monitoring and enforcement. We developed Habitat Patrol to help address this critical need. Habitat Patrol is a free, public web application that …
California's Desert Tortoise image.

California's Desert Tortoise

After existing for millions of years in the California desert, the desert tortoise is experiencing continued, rapid population declines throughout its range. Many of the threats to tortoise are human related, including military base expansion, road …
Same law, diverging practice: Comparative analysis of Endangered Species Act consultations by two federal agencies image.

Same law, diverging practice: Comparative analysis of Endangered Species Act consultations by two federal agencies

Evaluating how wildlife conservation laws are implemented is critical for safeguarding biodiversity. Two agencies, the U.S. Fish and Wildlife Service and National Marine Fisheries Service (FWS and NMFS; Services collectively), are responsible for …

Update to the U.S. Fish and Wildlife Service endangered species program FY 2021 request

This document serves as an update of CCI’s funding analysis in 2019 , where we found that the FWS receives less than half of what is needed to run the ESA as Congress intended. Last year, thanks in part to this work, Congress provided a 5.6% …
Recovery units under the Endangered Species Act could be used more widely image.

Recovery units under the Endangered Species Act could be used more widely

Recovering species is one of the main goals of the Endangered Species Act (ESA). In the face of limited budgets, diverse tools are needed to find efficient solutions. Recovery units may be one such tool -designated portions of a species range that …
US imperiled species are most vulnerable to habitat loss on private lands image.

US imperiled species are most vulnerable to habitat loss on private lands

To stem the ongoing loss of biodiversity, conservation practitioners must distinguish between effective and ineffective approaches for protecting species habitats. Using Google Earth Engine and 31 years of Landsat images, we quantified changes in the …