Coastal Vertebrate Exposure to Predicted Habitat Changes Due to Sea Level Rise.
Elizabeth A Hunter1, Nathan P Nibbelink2, Clark R Alexander3
1Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA, 30602, USA. eahunter@uga.edu.
Environmental Management
|July 12, 2015
Summary
Coastal vertebrate species in the Southeastern US face significant habitat loss from sea level rise (SLR). Salt marsh specialists like rails and sparrows are most vulnerable to these changes.
Area of Science:
- Ecology
- Conservation Biology
- Climate Change Science
Background:
- Sea level rise (SLR) poses a significant threat to coastal ecosystems and their vertebrate inhabitants.
- Identifying species and habitats most vulnerable to SLR is crucial for effective conservation planning.
Purpose of the Study:
- To assess the exposure of 28 coastal Georgia vertebrate species to habitat changes driven by projected sea level rise through 2100.
- To identify which species and habitat types are most at risk from SLR impacts in the Southeastern United States.
Main Methods:
- Utilized the Sea Level Affecting Marshes Model (SLAMM) to forecast habitat changes.
- Incorporated species' fundamental niche data and analyzed three habitat metrics: total area, patch size, and permanence.
- Assessed 16 categorical land cover types for habitat change.
Main Results:
- Nearly all (24 of 28) assessed species experienced negative habitat changes due to SLR across at least one metric.
- Salt marsh and ocean beach habitats showed the most significant changes.
- Species heavily reliant on salt marshes, such as rails and marsh sparrows, exhibited the highest exposure to habitat degradation.
Conclusions:
- Salt marsh-dependent species and those nesting on beaches are highly exposed to SLR impacts.
- Future research should prioritize understanding the foraging and nesting requirements of coastal vertebrates in relation to habitat changes.
- The developed prioritization approach can guide resource allocation and habitat protection strategies for vulnerable coastal species and ecosystems.
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