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Linda Deegan

Abstract (from Estuaries and Coasts): A prominent form of salt marsh loss is interior conversion to open water, driven by sea level rise in interaction with human activity and other stressors. Persistent inundation drowns vegetation and contributes to open water conversion in salt marsh interiors. Runnels are shallow channels originally developed in Australia to control mosquitoes by draining standing water, but recently used to restore marsh vegetation in the USA. Documentation on runnel efficacy is not widely available; yet over the past 10 years dozens of coastal adaptation projects in the northeastern USA have incorporated runnels. To better understand the efficacy of runnels used for restoration, we organized...
Categories: Publication; Types: Citation
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Slowing the Flow for Climate Resilience: Reducing Vulnerability to Extreme Flood and Drought Events
In the Northeastern U.S., climate change is expected to increase the frequency of extreme precipitation events. However, less rain is predicted to fall in between these extreme events and air temperatures are also expected to rise. This combination of conditions will likely expose the Northeast to both floods and droughts that will have significant ecological, social, and economic implications for the region. Infrastructure damage from extreme storm events, increased competition for water supplies during droughts, and the potential loss of wildlife and habitats are some of the various challenges facing resource managers and decision makers. Management actions that mitigate the damage from extreme floods and droughts...
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Informing Conservation Management Decision-Making at Coastal National Wildlife Refuges
Coastal National Wildlife Refuges (NWRs) provide a myriad of beneficial services, including buffering storm surge, improving water quality, supporting commercial fisheries, and providing habitat for imperiled wildlife and plants. Yet in the last century, coastal ecosystems in the eastern U.S. have been severely altered by human development activities as well as sea-level rise and more frequent extreme events related to climate change. These influences threaten the goods and services provided by NWRs and pose decision-making challenges for refuge managers. The purpose of this project was to explore how structured decision-making – a formal, systematic method for analyzing decisions – could help NWR staff make informed...
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Mapping Salt Marsh Response to Sea Level Rise and Evaluating 'Runneling' as an Adaptation Technique to Inform Wildlife Habitat Management in New England
Loss of saltmarsh habitat is one of the biggest threats to coastal sustainability in the Northeast. Salt marsh has been identified as an essential fish and wildlife habitat, and loss of saltmarsh corresponds with precipitous declines in marsh-dependent wildlife. For example, the global population of Saltmarsh Sparrow is predicted to collapse within the next 50 years after experiencing a 9% annual decline across the northeastern U.S. Resource managers require tools to help restore salt marsh habitat for wildlife by adapting marshes to climate change-driven sea level rise. However, adaptation approaches need to be tested and evaluated before widespread application. Researchers are testing a rapidly emerging sea...
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Northeast Climate Adaptation Science Center Consortium - Hosted by University of Massachusetts Amherst (2019-2024)
The Northeast Climate Adaptation Science Center (NE CASC) develops scientific information and tools to help managers address climate variability and climate change related to impacts on land, water, fish and wildlife, nearshore, coastal and cultural heritage resources. The NE CASC is hosted by the University of Massachusetts Amherst (UMASS) with consortium partners College of Menominee Nation, Columbia University, Cornell University, Michigan State University, University of Missouri, University of Vermont, University of Wisconsin, Woodwell Climate Research Center and the United States Forest Service Northern Research Station. The NE CASC consortium addresses regional science priorities of the Department of the...
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