Projected Vulnerability of Brook Trout to Climate and Land Use Changes in the Eastern U.S. (Regional Assessment)

Tyler Wagner
Posted on: 7/18/2022 -

Posted by

CakeX Site Admin

Abstract

Throughout its native range in the Eastern U.S., the brook trout is a culturally and economically important species that is sensitive to warming stream temperatures and habitat degradation. The purpose of this assessment is to determine what impacts projected future land use and climate changes might have on the condition of stream habitat to support self-sustaining brook trout populations. The study region encompasses the historic native range of brook trout which includes the northeastern states and follows the Appalachian Mountains south to Georgia, where the distribution is limited to higher elevation streams with suitable water temperatures (streams < ~24 C maximum summer temperature). Relationships between recent observations of brook trout and predicted stream temperature, land use, and a number of potential habitat stressors will be used to make predictions regarding the condition of the habitat in each stream reach for supporting self-sustaining brook trout now and under future climate and land use change scenarios. To achieve our objective, we will complete the following tasks and generate several products to help meet local and regional management needs. The intent of this project is to: - Develop a stream temperature model and predict water temperature for all stream reaches in the Eastern Brook Trout Joint Venture region under present conditions and future scenarios of climate and land use change. - Predict the occurrence of brook trout in all stream reaches of the EBTJV region based on relationships with natural landscape predictors, predicted stream temperature, and land use under present conditions and future scenarios of climate and land use change. - Provide maps and characteristics of stream reaches where stream temperatures and suitability for brook trout are predicted to change under climate and land use change scenarios.

Organization(s)

The USGS is a science organization that provides impartial information on the health of our ecosystems and environment, the natural hazards that threaten us, the natural resources we rely on, the impacts of climate and land-use change, and the core science systems that help us provide timely, relevant, and useable information.

Keywords

Adaptation Phase
Type of Adaptation Action/Strategy
Habitat/Biome Type
Region