Karen Thorne, Ph.D.
Dr. Karen Thorne is a Research Ecologist with the USGS Western Ecological Research Center,
Her research expertise is on coastal ecosystems and understanding ecosystem services, wetland ecology and restoration, impacts from inundation and storms, and nature-based solutions. She received her Ph.D. and MS from the University of California, Davis.
Dr. Thorne's interests lie in conservation and management issues surrounding coastal ecosystems within a changing environment and management landscape. The research she conducts is critical to understanding the role that coastal ecosystems provide, both environmentally and economically. The research she conducts specifically helps guide Federal, State, and local landowners and managers in planning for more resilient and adaptable habitats; assists in informing the impacts or benefits needed to maintain ecosystem values; and provides methods and tools that identify and help landowners and regulators improve the restoration needed to off-set anthropogenic impacts in coastal environments. Current research focuses include assessing flooding impacts to mangrove and marsh ecosystem processes. Also, understanding ecological processes for marsh, mangrove, and seagrass restoration to inform management in the U.S. and South Pacific islands. Her research is based on field data collection methods that can be used to inform decision-making for managing emerging concerns.
Professional Experience
Research Ecologist, USGS, Western Ecological Research Center, Davis Field Station, 2012 - present
Biologist, USGS, Western Ecological Research Center, San Francisco Bay Estuary Field Station, 2005 to 2012
Research Associate, U.S. Fish & Wildlife Service, Fairbanks, AK, 2002 to 2005
Education and Certifications
PhD, Geography, Global Change, University of California, Davis, 2012
MS, Geography, Environmental Studies, University of California, Davis, 2008
BS, Wildlife, Fish, & Conservation Biology, University of California, Davis 2000
Affiliations and Memberships*
California Landscape Conservation Cooperative Science Team
Science and Products
Fate of Endangered Species in San Francisco Bay Tidal Marshes with Sea-Level Rise
WARMER-2 Model Inputs and Projections for Three Tidal Wetland Sites Across San Francisco Bay Estuary WARMER-2 Model Inputs and Projections for Three Tidal Wetland Sites Across San Francisco Bay Estuary
Mangrove Elevation and Species' Responses to Sea-level Rise Across Pohnpei, Federated States of Micronesia (ver. 1.1, December 2021) Mangrove Elevation and Species' Responses to Sea-level Rise Across Pohnpei, Federated States of Micronesia (ver. 1.1, December 2021)
Pacific Northwest tidal marsh plant biomass from a 2017 greenhouse experiment with flooding and salinity manipulations Pacific Northwest tidal marsh plant biomass from a 2017 greenhouse experiment with flooding and salinity manipulations
Impounded and tidal wetland plant diversity and composition across spatial scales, San Francisco Bay-Delta, California, USA (2016-2018) Impounded and tidal wetland plant diversity and composition across spatial scales, San Francisco Bay-Delta, California, USA (2016-2018)
Small mammal surveys from northern San Francisco Bay: 1998-2014 Small mammal surveys from northern San Francisco Bay: 1998-2014
LEAN-Corrected Collier County DEM for wetlands LEAN-Corrected Collier County DEM for wetlands
LEAN-Corrected DEM for Suisun Marsh LEAN-Corrected DEM for Suisun Marsh
LEAN-corrected San Francisco Bay digital elevation model, 2018 LEAN-corrected San Francisco Bay digital elevation model, 2018
Digital elevation model outputs from wetland accreting rate model of ecosystem resilience (WARMER) at ten year intervals from 2010-2110 Digital elevation model outputs from wetland accreting rate model of ecosystem resilience (WARMER) at ten year intervals from 2010-2110
Data for climate-related variation in plant peak biomass and growth phenology across Pacific Northwest tidal marshes Data for climate-related variation in plant peak biomass and growth phenology across Pacific Northwest tidal marshes
Decomposition of plant litter in Pacific coast tidal marshes, 2014-2015 Decomposition of plant litter in Pacific coast tidal marshes, 2014-2015
Multi-decadal simulation of marsh topography evolution under sea level rise and episodic sediment loads Multi-decadal simulation of marsh topography evolution under sea level rise and episodic sediment loads
Constraints on the adjustment of tidal marshes to accelerating sea level rise Constraints on the adjustment of tidal marshes to accelerating sea level rise
Assessing small-mammal trapping design using spatially explicit capture recapture (SECR) modeling on long-term monitoring data Assessing small-mammal trapping design using spatially explicit capture recapture (SECR) modeling on long-term monitoring data
Migration and transformation of coastal wetlands in response to rising seas Migration and transformation of coastal wetlands in response to rising seas
Atmospheric river storm flooding influences tidal marsh elevation building processes Atmospheric river storm flooding influences tidal marsh elevation building processes
Elevations of mangrove forests of Pohnpei, Micronesia Elevations of mangrove forests of Pohnpei, Micronesia
Seasonal impoundment management reduces nitrogen cycling but not resilience to surface fire in a tidal wetland Seasonal impoundment management reduces nitrogen cycling but not resilience to surface fire in a tidal wetland
Enhancing marsh elevation using sediment augmentation: A case study from southern California, USA Enhancing marsh elevation using sediment augmentation: A case study from southern California, USA
Incorporation of uncertainty to improve projections of tidal wetland elevation and carbon accumulation with sea-level rise Incorporation of uncertainty to improve projections of tidal wetland elevation and carbon accumulation with sea-level rise
Climate change vulnerability assessment for the California coastal national monument—Trinidad and Point Arena-Stornetta units Climate change vulnerability assessment for the California coastal national monument—Trinidad and Point Arena-Stornetta units
Sea-level rise vulnerability of mangrove forests on the Micronesian Island of Pohnpei Sea-level rise vulnerability of mangrove forests on the Micronesian Island of Pohnpei
Intensity of grass invasion negatively correlated with population density and age structure of an endangered dune plant across its range Intensity of grass invasion negatively correlated with population density and age structure of an endangered dune plant across its range
Science and Products
Fate of Endangered Species in San Francisco Bay Tidal Marshes with Sea-Level Rise
WARMER-2 Model Inputs and Projections for Three Tidal Wetland Sites Across San Francisco Bay Estuary WARMER-2 Model Inputs and Projections for Three Tidal Wetland Sites Across San Francisco Bay Estuary
Mangrove Elevation and Species' Responses to Sea-level Rise Across Pohnpei, Federated States of Micronesia (ver. 1.1, December 2021) Mangrove Elevation and Species' Responses to Sea-level Rise Across Pohnpei, Federated States of Micronesia (ver. 1.1, December 2021)
Pacific Northwest tidal marsh plant biomass from a 2017 greenhouse experiment with flooding and salinity manipulations Pacific Northwest tidal marsh plant biomass from a 2017 greenhouse experiment with flooding and salinity manipulations
Impounded and tidal wetland plant diversity and composition across spatial scales, San Francisco Bay-Delta, California, USA (2016-2018) Impounded and tidal wetland plant diversity and composition across spatial scales, San Francisco Bay-Delta, California, USA (2016-2018)
Small mammal surveys from northern San Francisco Bay: 1998-2014 Small mammal surveys from northern San Francisco Bay: 1998-2014
LEAN-Corrected Collier County DEM for wetlands LEAN-Corrected Collier County DEM for wetlands
LEAN-Corrected DEM for Suisun Marsh LEAN-Corrected DEM for Suisun Marsh
LEAN-corrected San Francisco Bay digital elevation model, 2018 LEAN-corrected San Francisco Bay digital elevation model, 2018
Digital elevation model outputs from wetland accreting rate model of ecosystem resilience (WARMER) at ten year intervals from 2010-2110 Digital elevation model outputs from wetland accreting rate model of ecosystem resilience (WARMER) at ten year intervals from 2010-2110
Data for climate-related variation in plant peak biomass and growth phenology across Pacific Northwest tidal marshes Data for climate-related variation in plant peak biomass and growth phenology across Pacific Northwest tidal marshes
Decomposition of plant litter in Pacific coast tidal marshes, 2014-2015 Decomposition of plant litter in Pacific coast tidal marshes, 2014-2015
Multi-decadal simulation of marsh topography evolution under sea level rise and episodic sediment loads Multi-decadal simulation of marsh topography evolution under sea level rise and episodic sediment loads
Constraints on the adjustment of tidal marshes to accelerating sea level rise Constraints on the adjustment of tidal marshes to accelerating sea level rise
Assessing small-mammal trapping design using spatially explicit capture recapture (SECR) modeling on long-term monitoring data Assessing small-mammal trapping design using spatially explicit capture recapture (SECR) modeling on long-term monitoring data
Migration and transformation of coastal wetlands in response to rising seas Migration and transformation of coastal wetlands in response to rising seas
Atmospheric river storm flooding influences tidal marsh elevation building processes Atmospheric river storm flooding influences tidal marsh elevation building processes
Elevations of mangrove forests of Pohnpei, Micronesia Elevations of mangrove forests of Pohnpei, Micronesia
Seasonal impoundment management reduces nitrogen cycling but not resilience to surface fire in a tidal wetland Seasonal impoundment management reduces nitrogen cycling but not resilience to surface fire in a tidal wetland
Enhancing marsh elevation using sediment augmentation: A case study from southern California, USA Enhancing marsh elevation using sediment augmentation: A case study from southern California, USA
Incorporation of uncertainty to improve projections of tidal wetland elevation and carbon accumulation with sea-level rise Incorporation of uncertainty to improve projections of tidal wetland elevation and carbon accumulation with sea-level rise
Climate change vulnerability assessment for the California coastal national monument—Trinidad and Point Arena-Stornetta units Climate change vulnerability assessment for the California coastal national monument—Trinidad and Point Arena-Stornetta units
Sea-level rise vulnerability of mangrove forests on the Micronesian Island of Pohnpei Sea-level rise vulnerability of mangrove forests on the Micronesian Island of Pohnpei
Intensity of grass invasion negatively correlated with population density and age structure of an endangered dune plant across its range Intensity of grass invasion negatively correlated with population density and age structure of an endangered dune plant across its range
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government