Upcoming Webinar: Sea-level rise effects on coastal wetlands in Southern California

Nearly half of Southern California’s marsh habitat could be lost to sea level rise by 2100.  Join us for a webinar hosted by the California Landscape Conservation Cooperative on the impact of rising seas on Southern California’s wetlands based on a new model that incorporates topography, sediment accretion rates, tidal inlet dynamics, and plant response to quantify wetland habitat conversion driven by sea level rise.

Tuesday, October 31, 11-12pm



Eric Stein (presenter)Southern California Coastal Water Research Project

Cheryl Doughty, University of California Los Angeles

Megan Cooper, State Coastal Conservancy

This standardized approach can be developed for all wetlands in a region regardless of differing levels of data availability, making it ideal for quantifying regional effects. We applied the model to approximately 100 wetlands along the Southern California coast, representing a broad range of wetland type and data availability. Our findings suggest that if wetlands are confined to their current extents, the region will lose 12% of marsh habitats (vegetated marsh and unvegetated intertidal flats) with 0.6 m of sea-level rise (by 2050) and 48% with 1.6 m of sea-level rise (by 2100). Habitat conversion was more drastic in wetlands with larger proportions of marsh habitats relative to subtidal habitats and occurred more rapidly in small coastal lagoons relative to larger systems. Our assessment can inform management of coastal wetlands by improving our understanding of the drivers relevant to individual wetlands and the significant gaps in data impeding our ability to model response at large scales.

To register, click here