Glenn Guntenspergen, Ph.D.
Glenn is a Research Ecologist at the Eastern Ecological Science Center in Laurel, MD.
Science and Products
Filter Total Items: 19
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Migration and transformation of coastal wetlands in response to rising seas Migration and transformation of coastal wetlands in response to rising seas
Coastal wetlands are not only among the world’s most valued ecosystems but also among the most threatened by high greenhouse gas emissions that lead to accelerated sea level rise. There is intense debate regarding the extent to which landward migration of wetlands might compensate for seaward wetland losses. By integrating data from 166 estuaries across the conterminous United States, we...
Authors
Michael Osland, Bogdan Chivoiu, Nicholas Enwright, Karen M. Thorne, Glenn R. Guntenspergen, James Grace, Leah Dale, William Brooks, Nathaniel Herold, John W. Day, Fred H. Sklar, Christopher M. Swarzenski
By
Ecosystems Mission Area, Water Resources Mission Area, Ecosystems Land Change Science Program, Land Management Research Program, Eastern Ecological Science Center, Lower Mississippi-Gulf Water Science Center, Western Ecological Research Center (WERC), Wetland and Aquatic Research Center , Gulf of America
Atmospheric river storm flooding influences tidal marsh elevation building processes Atmospheric river storm flooding influences tidal marsh elevation building processes
Disturbances are a key component of ecological processes in coastal ecosystems. Investigating factors that affect tidal marsh accretion and elevation change is important, largely due to accelerating sea-level rise and the ecological and economic value of wetlands. Sediment accumulation rates, elevation change, and flooding were examined at five marshes along a riverine-tidal gradient in...
Authors
Karen M. Thorne, Scott Jones, Chase M. Freeman, Kevin Buffington, Christopher N. Janousek, Glenn R. Guntenspergen
Temperature optimum for marsh resilience and carbon accumulation revealed in a whole ecosystem warming experiment Temperature optimum for marsh resilience and carbon accumulation revealed in a whole ecosystem warming experiment
Coastal marshes are globally important, carbon dense ecosystems simultaneously maintained and threatened by sea-level rise. Warming temperatures may increase wetland plant productivity and organic matter accumulation, but temperature-modulated feedbacks between productivity and decomposition make it difficult to assess how wetlands and their thick, organic rich soils will respond to...
Authors
Alexander J. Smith, Genevieve L. Noyce, J. Patrick Megonigal, Glenn R. Guntenspergen, Matthew L. Kirwan
Reconciling models and measurements of marsh vulnerability to sea level rise Reconciling models and measurements of marsh vulnerability to sea level rise
Tidal marsh survival in the face of sea level rise (SLR) and declining sediment supply often depends on the ability of marshes to build soil vertically. However, numerical models typically predict survival under rates of SLR that far exceed field-based measurements of vertical accretion. Here, we combine novel measurements from seven U.S. Atlantic Coast marshes and data from 70...
Authors
Daniel J. Coleman, Mark Schuerch, Stijn Temmerman, Glenn R. Guntenspergen, Christopher G. Smith, Matthew L. Kirwan
Experimental tree mortality does not induce marsh transgression in a Chesapeake Bay low-lying coastal forest Experimental tree mortality does not induce marsh transgression in a Chesapeake Bay low-lying coastal forest
Transgression into adjacent uplands is an important global response of coastal wetlands to accelerated rates of sea level rise. “Ghost forests” mark a signature characteristic of marsh transgression on the landscape, as changes in tidal inundation and salinity cause bordering upland tree mortality, increase light availability, and the emergence of tidal marsh species due to reduced...
Authors
David C Walters, Joel A. Carr, Alyssa Hockaday, Joshua A Jones, Eliza McFarland, Katya Kovalenko, Matthew L. Kirwan, Donald Cahoon, Glenn R. Guntenspergen
Changes in organic carbon source and storage with sea level rise-induced transgression in a Chesapeake Bay marsh Changes in organic carbon source and storage with sea level rise-induced transgression in a Chesapeake Bay marsh
Organic matter (OM) accumulation in marsh soils affects marsh survival under rapid sea-level rise (SLR). This work describes the changing organic geochemistry of a salt marsh located in the Blackwater National Wildlife Refuge on the eastern shore of Chesapeake Bay that has transgressed inland with SLR over the past 35–75 years. Marsh soils and vegetation were sampled along an elevation...
Authors
Rachel Van Allen, Kathryn M. Schreiner, Glenn R. Guntenspergen, Joseph A. Carlin
Science and Products
Filter Total Items: 19
No Result Found
Filter Total Items: 133
Migration and transformation of coastal wetlands in response to rising seas Migration and transformation of coastal wetlands in response to rising seas
Coastal wetlands are not only among the world’s most valued ecosystems but also among the most threatened by high greenhouse gas emissions that lead to accelerated sea level rise. There is intense debate regarding the extent to which landward migration of wetlands might compensate for seaward wetland losses. By integrating data from 166 estuaries across the conterminous United States, we...
Authors
Michael Osland, Bogdan Chivoiu, Nicholas Enwright, Karen M. Thorne, Glenn R. Guntenspergen, James Grace, Leah Dale, William Brooks, Nathaniel Herold, John W. Day, Fred H. Sklar, Christopher M. Swarzenski
By
Ecosystems Mission Area, Water Resources Mission Area, Ecosystems Land Change Science Program, Land Management Research Program, Eastern Ecological Science Center, Lower Mississippi-Gulf Water Science Center, Western Ecological Research Center (WERC), Wetland and Aquatic Research Center , Gulf of America
Atmospheric river storm flooding influences tidal marsh elevation building processes Atmospheric river storm flooding influences tidal marsh elevation building processes
Disturbances are a key component of ecological processes in coastal ecosystems. Investigating factors that affect tidal marsh accretion and elevation change is important, largely due to accelerating sea-level rise and the ecological and economic value of wetlands. Sediment accumulation rates, elevation change, and flooding were examined at five marshes along a riverine-tidal gradient in...
Authors
Karen M. Thorne, Scott Jones, Chase M. Freeman, Kevin Buffington, Christopher N. Janousek, Glenn R. Guntenspergen
Temperature optimum for marsh resilience and carbon accumulation revealed in a whole ecosystem warming experiment Temperature optimum for marsh resilience and carbon accumulation revealed in a whole ecosystem warming experiment
Coastal marshes are globally important, carbon dense ecosystems simultaneously maintained and threatened by sea-level rise. Warming temperatures may increase wetland plant productivity and organic matter accumulation, but temperature-modulated feedbacks between productivity and decomposition make it difficult to assess how wetlands and their thick, organic rich soils will respond to...
Authors
Alexander J. Smith, Genevieve L. Noyce, J. Patrick Megonigal, Glenn R. Guntenspergen, Matthew L. Kirwan
Reconciling models and measurements of marsh vulnerability to sea level rise Reconciling models and measurements of marsh vulnerability to sea level rise
Tidal marsh survival in the face of sea level rise (SLR) and declining sediment supply often depends on the ability of marshes to build soil vertically. However, numerical models typically predict survival under rates of SLR that far exceed field-based measurements of vertical accretion. Here, we combine novel measurements from seven U.S. Atlantic Coast marshes and data from 70...
Authors
Daniel J. Coleman, Mark Schuerch, Stijn Temmerman, Glenn R. Guntenspergen, Christopher G. Smith, Matthew L. Kirwan
Experimental tree mortality does not induce marsh transgression in a Chesapeake Bay low-lying coastal forest Experimental tree mortality does not induce marsh transgression in a Chesapeake Bay low-lying coastal forest
Transgression into adjacent uplands is an important global response of coastal wetlands to accelerated rates of sea level rise. “Ghost forests” mark a signature characteristic of marsh transgression on the landscape, as changes in tidal inundation and salinity cause bordering upland tree mortality, increase light availability, and the emergence of tidal marsh species due to reduced...
Authors
David C Walters, Joel A. Carr, Alyssa Hockaday, Joshua A Jones, Eliza McFarland, Katya Kovalenko, Matthew L. Kirwan, Donald Cahoon, Glenn R. Guntenspergen
Changes in organic carbon source and storage with sea level rise-induced transgression in a Chesapeake Bay marsh Changes in organic carbon source and storage with sea level rise-induced transgression in a Chesapeake Bay marsh
Organic matter (OM) accumulation in marsh soils affects marsh survival under rapid sea-level rise (SLR). This work describes the changing organic geochemistry of a salt marsh located in the Blackwater National Wildlife Refuge on the eastern shore of Chesapeake Bay that has transgressed inland with SLR over the past 35–75 years. Marsh soils and vegetation were sampled along an elevation...
Authors
Rachel Van Allen, Kathryn M. Schreiner, Glenn R. Guntenspergen, Joseph A. Carlin