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Drought

Droughts of the future will be hotter, longer-lasting, and larger than droughts of the past. CASC researchers are working to understand how these droughts will impact important natural resources across the country. Learn more about this work below.

Filter Total Items: 53

A Climate Risk Management Screening and Assessment Review for Madagascar’s Country Development Cooperation Strategy

Madagascar, a country rich in natural capital and biodiversity but with high levels of poverty, food insecurity, and population growth, faces a number of development challenges, including obtaining sustained financial support from external sources and building internal capacity to address the poor environmental, health, and socio-economic conditions. Climate change poses an increasing threat to ac
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A Climate Risk Management Screening and Assessment Review for Madagascar’s Country Development Cooperation Strategy

Madagascar, a country rich in natural capital and biodiversity but with high levels of poverty, food insecurity, and population growth, faces a number of development challenges, including obtaining sustained financial support from external sources and building internal capacity to address the poor environmental, health, and socio-economic conditions. Climate change poses an increasing threat to ac
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A Climate-Informed Conservation Strategy for Southern California’s Montane Forests

California is a world biodiversity hotspot, and also home to hundreds of sensitive, threatened, and endangered species. One of the most vulnerable ecosystems in California is the “sky island” montane forests of southern California, forests of conifers and hardwoods located only in high-elevation mountain regions. Montane forests serve many important ecosystem functions, including protecting the up
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A Climate-Informed Conservation Strategy for Southern California’s Montane Forests

California is a world biodiversity hotspot, and also home to hundreds of sensitive, threatened, and endangered species. One of the most vulnerable ecosystems in California is the “sky island” montane forests of southern California, forests of conifers and hardwoods located only in high-elevation mountain regions. Montane forests serve many important ecosystem functions, including protecting the up
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Building Tools to Assess Future Climate Impacts on Water Resources of the Canadian River Basin

Several times during the severe drought of 2010-2015, communities within the jurisdictional territories of the Chickasaw Nation and the Choctaw Nation of Oklahoma were precariously close to running out of water. According to previous studies, temperatures are expected to continue to rise throughout the southern states, and droughts are predicted to be longer and more severe. Even small changes to
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Building Tools to Assess Future Climate Impacts on Water Resources of the Canadian River Basin

Several times during the severe drought of 2010-2015, communities within the jurisdictional territories of the Chickasaw Nation and the Choctaw Nation of Oklahoma were precariously close to running out of water. According to previous studies, temperatures are expected to continue to rise throughout the southern states, and droughts are predicted to be longer and more severe. Even small changes to
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Drought and Disturbances as Drivers of Long-Term Ecological Transformation and Risk

Forested areas in the Western U.S. that are impacted by disturbances such as fire and drought have increased in recent decades. This trend is likely to continue, with the increase in frequency and extent of wildfire activity being especially concerning. Resource managers need reliable scientific information to better understand wildfire occurrence, which can vary substantially across landscapes an
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Drought and Disturbances as Drivers of Long-Term Ecological Transformation and Risk

Forested areas in the Western U.S. that are impacted by disturbances such as fire and drought have increased in recent decades. This trend is likely to continue, with the increase in frequency and extent of wildfire activity being especially concerning. Resource managers need reliable scientific information to better understand wildfire occurrence, which can vary substantially across landscapes an
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Learning From the Past and Planning for the Future: Experience-Driven Insight Into Managing for Ecosystem Transformations Induced by Drought and Wildfire

Drought and wildfire pose enormous threats to the integrity of natural resources that land managers are charged with protecting. Recent observations and modeling forecasts indicate that these stressors will likely produce catastrophic ecosystem transformations, or abrupt changes in the condition of plants, wildlife, and their habitats, in regions across the country in coming decades. In this p
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Learning From the Past and Planning for the Future: Experience-Driven Insight Into Managing for Ecosystem Transformations Induced by Drought and Wildfire

Drought and wildfire pose enormous threats to the integrity of natural resources that land managers are charged with protecting. Recent observations and modeling forecasts indicate that these stressors will likely produce catastrophic ecosystem transformations, or abrupt changes in the condition of plants, wildlife, and their habitats, in regions across the country in coming decades. In this p
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Vulnerability of Lower-Elevation Aspen Forests to Altered Fire and Climate Dynamics: Assessing Risks and Developing Actionable Science

Aspen forests are considered keystone ecosystems, meaning that loss of aspen habitat would result in negative impacts to numerous plant and animal species. Aspen also provide important economic and social benefits, including drawing tourists, serving as potential fire breaks, improving local economies, and providing forage for wildlife and livestock. Ecologically-valuable aspen forests are conside
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Vulnerability of Lower-Elevation Aspen Forests to Altered Fire and Climate Dynamics: Assessing Risks and Developing Actionable Science

Aspen forests are considered keystone ecosystems, meaning that loss of aspen habitat would result in negative impacts to numerous plant and animal species. Aspen also provide important economic and social benefits, including drawing tourists, serving as potential fire breaks, improving local economies, and providing forage for wildlife and livestock. Ecologically-valuable aspen forests are conside
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A Synthesis of Climate Change Refugia Science and Management Actions to Inform Climate Adaptation in the Southwest

The impacts of climate change are widespread and accelerating. It is daunting for resource managers to determine how to use increasingly limited staff time and funding to conserve species and ecosystems. The Refugia Research Coalition is a national framework that brings together researchers and managers to identify and develop conservation strategies for “climate change refugia”, areas that remain
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A Synthesis of Climate Change Refugia Science and Management Actions to Inform Climate Adaptation in the Southwest

The impacts of climate change are widespread and accelerating. It is daunting for resource managers to determine how to use increasingly limited staff time and funding to conserve species and ecosystems. The Refugia Research Coalition is a national framework that brings together researchers and managers to identify and develop conservation strategies for “climate change refugia”, areas that remain
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State of the Science Synthesis on Transformational Drought: Understanding Drought’s Potential to Transform Ecosystems Across the Country

Drought events have cost the U.S. nearly $245 billion since 1980, with costs ranging from $2 to $44 billion in any given year. However, these socio-economic losses are not the only impacts of drought. Ecosystems, fish, wildlife, and plants also suffer, and these types of drought impacts are becoming more commonplace. Further, ecosystems that recover from drought are now doing so under different cl
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State of the Science Synthesis on Transformational Drought: Understanding Drought’s Potential to Transform Ecosystems Across the Country

Drought events have cost the U.S. nearly $245 billion since 1980, with costs ranging from $2 to $44 billion in any given year. However, these socio-economic losses are not the only impacts of drought. Ecosystems, fish, wildlife, and plants also suffer, and these types of drought impacts are becoming more commonplace. Further, ecosystems that recover from drought are now doing so under different cl
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Strategic Habitat Conservation and Adaptive Strategies for the Conservation of Coqui Frogs in Puerto Rico

The U.S. Fish and Wildlife Service and the Puerto Rico Department of Natural and Environmental Resources need to develop a plan of action to help the recovery of two endangered species in the genus Eleutherodactylus (commonly known as “coqui”), while also reducing the risk that 14 other coqui species would be added to the Endangered Species list. Prior work by these researchers has identified fact
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Strategic Habitat Conservation and Adaptive Strategies for the Conservation of Coqui Frogs in Puerto Rico

The U.S. Fish and Wildlife Service and the Puerto Rico Department of Natural and Environmental Resources need to develop a plan of action to help the recovery of two endangered species in the genus Eleutherodactylus (commonly known as “coqui”), while also reducing the risk that 14 other coqui species would be added to the Endangered Species list. Prior work by these researchers has identified fact
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The Impacts of Climate Change and Water Supply Management on Fish in the Colorado River

The Colorado River and its major tributaries provide a crucial water supply for more than 40 million people in the American Southwest and in California. This water supply is primarily used in irrigated agriculture but also provides essential drinking water to many large metropolitan areas. Hydropower is also produced at many of the large dams on the river. River flows have declined during the past
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The Impacts of Climate Change and Water Supply Management on Fish in the Colorado River

The Colorado River and its major tributaries provide a crucial water supply for more than 40 million people in the American Southwest and in California. This water supply is primarily used in irrigated agriculture but also provides essential drinking water to many large metropolitan areas. Hydropower is also produced at many of the large dams on the river. River flows have declined during the past
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Understanding New Paradigms for “Environmental Flows” and Water Allocation in the Middle Rio Grande River Basin in a Changing Climate

Water management in the middle portion of the Rio Grande Basin (between Elephant Butte Reservoir in New Mexico and Presidio, Texas) is challenging because water demand has continued to increase over time despite limited river water and dropping groundwater levels. While urban and agricultural users can cope with frequent droughts by using a combination of river water and pumping groundwater, littl
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Understanding New Paradigms for “Environmental Flows” and Water Allocation in the Middle Rio Grande River Basin in a Changing Climate

Water management in the middle portion of the Rio Grande Basin (between Elephant Butte Reservoir in New Mexico and Presidio, Texas) is challenging because water demand has continued to increase over time despite limited river water and dropping groundwater levels. While urban and agricultural users can cope with frequent droughts by using a combination of river water and pumping groundwater, littl
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Analyzing the Response of Waterflow to Projected Climate Conditions in the Upper Rio Grande Basin

Water availability in the upper Rio Grande Basin is dependent on winter and monsoon season precipitation. Consecutive years of drought and above average temperatures have diminished water supply and increased demand for water in this region. The increasing gap between water supply and demand is cause for concern. Climate projections for the southwestern and south central United States suggest that
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Analyzing the Response of Waterflow to Projected Climate Conditions in the Upper Rio Grande Basin

Water availability in the upper Rio Grande Basin is dependent on winter and monsoon season precipitation. Consecutive years of drought and above average temperatures have diminished water supply and increased demand for water in this region. The increasing gap between water supply and demand is cause for concern. Climate projections for the southwestern and south central United States suggest that
Learn More