How will sea level rise impact coastal ecosystems like salt marshes? Will plant species change and shift available habitat for local wildlife? Or will the marsh be completely inundated? USGS scientists are conducting extensive elevation and habitat surveys along the U.S. Pacific Coast, and using the data to model sea level rise impact for the next 100 years.
Cogswell marsh is located on the eastern side of south San Francisco Bay and covers 60 hectares. We surveyed 523 elevation points and 228 vegetation plots to determine baseline conditions of the marsh. Water level loggers deployed in 2010 were used to characterize the tidal inundation patterns throughout the year. Sediment accretion rates from soil cores near Laumeister marsh were extrapolated to Cogswell marsh and used as input for the WARMER sea-level rise response model. WARMER projects that by 2060 Cogswell marsh will be dominated by mid marsh vegetation and will transition into low marsh habitat by 2090.
COGSWELL MARSH
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To download the Cogswell PDF Summary Report (Cogswell appendix from USGS Open-File Report Final report for sea-level rise response modeling for San Francisco Bay estuary tidal marshes):
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Projected sea-level rise at Cogswell Marsh. Dark blue represents mean high water level, light blue is mean sea level. The marsh platform is accreting a constant 1.9 mm/yr, sea level rises 0.4 m by 2050 and 1.0 meter by 2100.
Sea-level Rise Scenario for San Francisco Bay Estuary - Cogswell Marsh
How will sea level rise impact coastal ecosystems like salt marshes? Will plant species change and shift available habitat for local wildlife? Or will the marsh be completely inundated? USGS scientists are conducting extensive elevation and habitat surveys along the U.S. Pacific Coast, and using the data to model sea level rise impact for the next 100 years.
Cogswell marsh is located on the eastern side of south San Francisco Bay and covers 60 hectares. We surveyed 523 elevation points and 228 vegetation plots to determine baseline conditions of the marsh. Water level loggers deployed in 2010 were used to characterize the tidal inundation patterns throughout the year. Sediment accretion rates from soil cores near Laumeister marsh were extrapolated to Cogswell marsh and used as input for the WARMER sea-level rise response model. WARMER projects that by 2060 Cogswell marsh will be dominated by mid marsh vegetation and will transition into low marsh habitat by 2090.
COGSWELL MARSH
Media
Sources/Usage: Some content may have restrictions. View Media Details
Media
Sources/Usage: Some content may have restrictions. View Media Details
Media
Sources/Usage: Some content may have restrictions. View Media Details
To download the Cogswell PDF Summary Report (Cogswell appendix from USGS Open-File Report Final report for sea-level rise response modeling for San Francisco Bay estuary tidal marshes):
The referenced media source is missing and needs to be re-embedded.
Projected sea-level rise at Cogswell Marsh. Dark blue represents mean high water level, light blue is mean sea level. The marsh platform is accreting a constant 1.9 mm/yr, sea level rises 0.4 m by 2050 and 1.0 meter by 2100.
Sea-level Rise Scenario for San Francisco Bay Estuary - Cogswell Marsh
How will sea level rise impact coastal ecosystems like salt marshes? Will plant species change and shift available habitat for local wildlife? Or will the marsh be completely inundated? USGS scientists are conducting extensive elevation and habitat surveys along the U.S. Pacific Coast, and using the data to model sea level rise impact for the next 100 years.
How will sea level rise impact coastal ecosystems like salt marshes? Will plant species change and shift available habitat for local wildlife? Or will the marsh be completely inundated? USGS scientists are conducting extensive elevation and habitat surveys along the U.S. Pacific Coast, and using the data to model sea level rise impact for the next 100 years.