Coasts

As climate change drives sea levels higher, coastal species and habitats may adapt by migrating inland. This landward shift may be challenged, however, by the presence of human-made and natural barriers, which may result in coastal habitat loss and declines in associated fish and wildlife populations. This is commonly known as ‘coastal squeeze’. To support the resilience of Northwest...

Project Overview: The San Pablo Baylands support critical wildlife habitat and major transportation infrastructure, but the combined effects of sea-level rise and planned highway redesigns on habitat and public access remain uncertain. Scientists supported by this Southwest CASC project will work with federal, state, and regional managers to fill key data gaps and model how sea-level...

Rising sea levels and frequent intense storms are rapidly changing Northeastern US coastal landscapes and threatening the vital ecosystem services they provide. Researchers supported by this Northeast CASC project will use landscape models, co-developed with coastal managers and tribal managers, to predict expected coastal changes for different environments (e.g., beaches, wetlands...

Project Overview Wetlands along the Gulf Coast are crucial for reducing hurricane-induced flooding and as habitat for diverse wildlife, but are threatened by rising sea levels, climate change, and coastal development. Using remote sensing data, future climate data, and numerical models, researchers from this South Central CASC-supported project will collaborate with local expert groups...

Project Overview Coastal marshes in the Gulf of America host diverse ecological communities and hold Native American cultural artifacts within shell mounds (middens). However, both are vulnerable to erosion and submergence due to rising sea levels and more frequent severe storms. Researchers supported by this Southeast CASC project will develop a risk-assessment tool to evaluate the...

Project Overview Sea-level rise, stronger storms, and coral reef bleaching events occurring with climate change threaten infrastructure, livelihoods, and cultural practices in Hawai'i. Researchers supported by this Pacific Islands CASC project will integrate Indigenous Knowledge and scientific research to co-produce climate adaptation strategies and conservation guidance for the...

Hala is a much-loved plant by Native Hawaiian cultural practitioners and lauhala weavers, yet native coastal forests of hala are now considered rare in Hawai'i. Research on climate resilience indicates that hala has the potential to mitigate storm surges and act as a barrier between salt spray and crops growing near the shoreline. To provide opportunities for natural and cultural...

Coastal wetland loss is a serious concern along the northern Gulf of America, especially in Texas and Louisiana where rates of wetland loss and relative sea-level rise are among the highest in the world, extreme storms are becoming more frequent, and flooding events are intensifying. Because coastal wetlands of the northern Gulf Coast provide numerous ecosystem services, including...

Steep, mountainous watersheds, dramatic climate gradients, and tight links between the land and sea are common features of both the Pacific Islands and Southeast Alaska. In these "ridge-to-reef" and “icefield-to-ocean" ecosystems, environmental changes that occur at higher elevations have downstream impacts on the waters below. Today, these two ecosystems are undergoing changes in...

Coastal flooding and erosion caused by storms and sea-level rise threaten infrastructure and public safety in Alaska Native communities. Though the problem is well known, there are few tools that can assess local vulnerability to coastal flood hazards. Even fewer tools can be customized with specific community information to support local adaptation planning. The main goal of this...

Salt marshes are grassy wetlands that form along sheltered coastlines. These areas provide crucial habitats for many species of birds and other animals, in addition to recreational activities and economic opportunities. Marshes also protect the coast from storms and filter runoff from the landscape, ensuring cleaner and healthier coastal waters. As climate change causes sea levels to...

This project seeks to enhance the stewardship of historic buildings vulnerable to climate change impacts. As sea level rise and storm-related flooding and erosion threaten our nation’s cultural heritage, there is a critical need to ensure that climate change adaptation decisions, including what cultural resources will be “let go”, are transparent and informed by the opinion of people...