Glenn Guntenspergen, Ph.D.
Glenn is a Research Ecologist at the Eastern Ecological Science Center in Laurel, MD.
Science and Products
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Predicting the persistence of coastal wetlands to global change stressors Predicting the persistence of coastal wetlands to global change stressors
Despite progress toward understanding the response of coastal wetlands to increases in relative sea-level rise and an improved understanding of the effect of elevated CO2 on plant species allocation patterns, we are limited in our ability to predict the response of coastal wetlands to the effects associated with global change. Static simulations of the response of coastal wetlands to sea...
Authors
G. Guntenspergen, Karen McKee, D. Cahoon, J. Grace, P. Megonigal
Vulnerability of northern prairie wetlands to climate change Vulnerability of northern prairie wetlands to climate change
The prairie pothole region (PPR) lies in the heart of North America and contains millions of glacially formed, depressional wetlands embedded in a landscape matrix of natural grassland and agriculture. These wetlands provide valuable ecosystem services and produce 50% to 80% of the continent's ducks. We explored the broad spatial and temporal patterns across the PPR between climate and...
Authors
W. Carter Johnson, Bruce Millett, Tagir Gilmanov, Richard A. Voldseth, Glenn R. Guntenspergen, David E. Naugle
Salt tolerance underlies the cryptic invasion of North American salt marshes by an introduced haplotype of the common reed Phragmites australis (Poaceae) Salt tolerance underlies the cryptic invasion of North American salt marshes by an introduced haplotype of the common reed Phragmites australis (Poaceae)
A distinct, non-native haplotype of the common reed Phragmites australis has become invasive in Atlantic coastal Spartina marshes. We compared the salt tolerance and other growth characteristics of the invasive M haplotype with 2 native haplotypes (F and AC) in greenhouse experiments. The M haplotype retained 50% of its growth potential up to 0.4 M NaCl, whereas the F and AC haplotypes...
Authors
Edward A. Vasquez, Edward P. Glenn, J. Jed Brown, Glenn R. Guntenspergen, Stephen G. Nelson
Fine-scale spatial variation in plant species richness and its relationship to environmental conditions in coastal marshlands Fine-scale spatial variation in plant species richness and its relationship to environmental conditions in coastal marshlands
Previous studies have shown that variations in environmental conditions play a major role in explaining variations in plant species richness at community and landscape scales. In this study, we considered the degree to which fine-scale spatial variations in richness could be related to fine-scale variations in abiotic and biotic factors. To examine spatial variation in richness, grids of...
Authors
J.E. Mancera, G.C. Meche, P.P. Cardona-Olarte, E. Castaneda-Moya, R.L. Chiasson, N.A. Geddes, L.M. Schile, H.G. Wang, G.R. Guntenspergen, J.B. Grace
Using hydrogeomorphic criteria to classify wetlands on Mt. Desert Island, Maine – Approach, classification system, and examples Using hydrogeomorphic criteria to classify wetlands on Mt. Desert Island, Maine – Approach, classification system, and examples
A wetland classification system was designed for Mt. Desert Island, Maine, to help categorize the large number of wetlands (over 1,200 mapped units) as an aid to understanding their hydrologic functions. The classification system, developed by the U.S. Geological Survey (USGS), in cooperation with the National Park Service, uses a modified hydrogeomorphic (HGM) approach, and assigns...
Authors
Martha G. Nielsen, Glenn R. Guntenspergen, Hilary A. Neckles
The Blackwater NWR inundation model. Rising sea level on a low-lying coast: land use planning for wetlands The Blackwater NWR inundation model. Rising sea level on a low-lying coast: land use planning for wetlands
The Blackwater National Wildlife Refuge (BNWR), on the Eastern Shore of Chesapeake Bay (figure 1), occupies an area less than 1 meter above sea level. The Refuge has been featured prominently in studies of the impact of sea level rise on coastal wetlands. Most notably, the refuge has been sited by the Intergovernmental Panel on Climate Change (IPCC) as a key example of 'wetland loss'...
Authors
Curt Larsen, Inga E. Clark, Glenn Guntenspergen, Don Cahoon, Vincent Caruso, Cliff Hupp, Tom Yanosky
Science and Products
Filter Total Items: 19
No Result Found
Filter Total Items: 134
Predicting the persistence of coastal wetlands to global change stressors Predicting the persistence of coastal wetlands to global change stressors
Despite progress toward understanding the response of coastal wetlands to increases in relative sea-level rise and an improved understanding of the effect of elevated CO2 on plant species allocation patterns, we are limited in our ability to predict the response of coastal wetlands to the effects associated with global change. Static simulations of the response of coastal wetlands to sea...
Authors
G. Guntenspergen, Karen McKee, D. Cahoon, J. Grace, P. Megonigal
Vulnerability of northern prairie wetlands to climate change Vulnerability of northern prairie wetlands to climate change
The prairie pothole region (PPR) lies in the heart of North America and contains millions of glacially formed, depressional wetlands embedded in a landscape matrix of natural grassland and agriculture. These wetlands provide valuable ecosystem services and produce 50% to 80% of the continent's ducks. We explored the broad spatial and temporal patterns across the PPR between climate and...
Authors
W. Carter Johnson, Bruce Millett, Tagir Gilmanov, Richard A. Voldseth, Glenn R. Guntenspergen, David E. Naugle
Salt tolerance underlies the cryptic invasion of North American salt marshes by an introduced haplotype of the common reed Phragmites australis (Poaceae) Salt tolerance underlies the cryptic invasion of North American salt marshes by an introduced haplotype of the common reed Phragmites australis (Poaceae)
A distinct, non-native haplotype of the common reed Phragmites australis has become invasive in Atlantic coastal Spartina marshes. We compared the salt tolerance and other growth characteristics of the invasive M haplotype with 2 native haplotypes (F and AC) in greenhouse experiments. The M haplotype retained 50% of its growth potential up to 0.4 M NaCl, whereas the F and AC haplotypes...
Authors
Edward A. Vasquez, Edward P. Glenn, J. Jed Brown, Glenn R. Guntenspergen, Stephen G. Nelson
Fine-scale spatial variation in plant species richness and its relationship to environmental conditions in coastal marshlands Fine-scale spatial variation in plant species richness and its relationship to environmental conditions in coastal marshlands
Previous studies have shown that variations in environmental conditions play a major role in explaining variations in plant species richness at community and landscape scales. In this study, we considered the degree to which fine-scale spatial variations in richness could be related to fine-scale variations in abiotic and biotic factors. To examine spatial variation in richness, grids of...
Authors
J.E. Mancera, G.C. Meche, P.P. Cardona-Olarte, E. Castaneda-Moya, R.L. Chiasson, N.A. Geddes, L.M. Schile, H.G. Wang, G.R. Guntenspergen, J.B. Grace
Using hydrogeomorphic criteria to classify wetlands on Mt. Desert Island, Maine – Approach, classification system, and examples Using hydrogeomorphic criteria to classify wetlands on Mt. Desert Island, Maine – Approach, classification system, and examples
A wetland classification system was designed for Mt. Desert Island, Maine, to help categorize the large number of wetlands (over 1,200 mapped units) as an aid to understanding their hydrologic functions. The classification system, developed by the U.S. Geological Survey (USGS), in cooperation with the National Park Service, uses a modified hydrogeomorphic (HGM) approach, and assigns...
Authors
Martha G. Nielsen, Glenn R. Guntenspergen, Hilary A. Neckles
The Blackwater NWR inundation model. Rising sea level on a low-lying coast: land use planning for wetlands The Blackwater NWR inundation model. Rising sea level on a low-lying coast: land use planning for wetlands
The Blackwater National Wildlife Refuge (BNWR), on the Eastern Shore of Chesapeake Bay (figure 1), occupies an area less than 1 meter above sea level. The Refuge has been featured prominently in studies of the impact of sea level rise on coastal wetlands. Most notably, the refuge has been sited by the Intergovernmental Panel on Climate Change (IPCC) as a key example of 'wetland loss'...
Authors
Curt Larsen, Inga E. Clark, Glenn Guntenspergen, Don Cahoon, Vincent Caruso, Cliff Hupp, Tom Yanosky