Gregory B Lawrence (Former Employee)
Science and Products
Filter Total Items: 109
Methods of soil resampling to monitor changes in the chemical concentrations of forest soils Methods of soil resampling to monitor changes in the chemical concentrations of forest soils
Recent soils research has shown that important chemical soil characteristics can change in less than a decade, often the result of broad environmental changes. Repeated sampling to monitor these changes in forest soils is a relatively new practice that is not well documented in the literature and has only recently been broadly embraced by the scientific community. The objective of this...
Authors
Gregory B. Lawrence, Ivan J. Fernandez, Paul W. Hazlett, Scott W. Bailey, Donald S. Ross, Thomas R. Villars, Angelica Quintana, Ouimet, Michael McHale, Chris E. Johnson, Russell D. Briggs, Robert A. Colter, Jason Siemion, Olivia L. Bartlett, Olga Vargas, Michael R. Antidormi, Mary Margaret Koppers
Photosynthetic and growth response of sugar maple (Acer saccharum Marsh.) mature trees and seedlings to calcium, magnesium, and nitrogen additions in the Catskill Mountains, NY, USA Photosynthetic and growth response of sugar maple (Acer saccharum Marsh.) mature trees and seedlings to calcium, magnesium, and nitrogen additions in the Catskill Mountains, NY, USA
Decline of sugar maple in North American forests has been attributed to changes in soil calcium (Ca) and nitrogen (N) by acidic precipitation. Although N is an essential and usually a limiting factor in forests, atmospheric N deposition may cause N-saturation leading to loss of soil Ca. Such changes can affect carbon gain and growth of sugar maple trees and seedlings. We applied a 22...
Authors
Bahram Momen, Shawna J Behling, Gregory B. Lawrence, Joseph H Sullivan
Regional growth decline of sugar maple (Acer saccharum) and its potential causes Regional growth decline of sugar maple (Acer saccharum) and its potential causes
Sugar maple (Acer saccharum Marsh) has experienced poor vigor, regeneration failure, and elevated mortality across much of its range, but there has been relatively little attention to its growth rates. Based on a well-replicated dendrochronological network of range-centered populations in the Adirondack Mountains (USA), which encompassed a wide gradient of soil fertility, we observed...
Authors
Daniel A. Bishop, Colin M. Beier, Neil Pederson, Gregory B. Lawrence, John C Stella, Timothy J. Sullivan
Declining acidic deposition begins reversal of forest-soil acidification in the northeastern U.S. and eastern Canada Declining acidic deposition begins reversal of forest-soil acidification in the northeastern U.S. and eastern Canada
Decreasing trends in acidic deposition levels over the past several decades have led to partial chemical recovery of surface waters. However, depletion of soil Ca from acidic deposition has slowed surface water recovery and led to the impairment of both aquatic and terrestrial ecosystems. Nevertheless, documentation of acidic deposition effects on soils has been limited, and little is...
Authors
Gregory B. Lawrence, Paul W. Hazlett, Ivan J. Fernandez, Ouimet, Scott W. Bailey, Walter C. Shortle, Kevin T. Smith, Michael R. Antidormi
Coastal plain pond water quality and mercury contend of biota of the Long Island Central Pine Barrens and Mashomack Preserve: Effects of atmospheric deposition and human development Coastal plain pond water quality and mercury contend of biota of the Long Island Central Pine Barrens and Mashomack Preserve: Effects of atmospheric deposition and human development
Pine barrens are considered an imperiled ecosystem in the northeastern U.S. The Suffolk County Pine Barrens, once the second largest in the Northeast, were substantially reduced and fragmented by development during the 20th century. The coastal plain ponds being considered in this study occur in central Suffolk County within the Long Island Central Pine Barrens region. This highly unique...
Authors
Gregory B. Lawrence, Jason Siemion, Oksana P. Lane
Inter-laboratory variation in the chemical analysis of acidic forest soil reference samples from eastern North America Inter-laboratory variation in the chemical analysis of acidic forest soil reference samples from eastern North America
Long-term forest soil monitoring and research often requires a comparison of laboratory data generated at different times and in different laboratories. Quantifying the uncertainty associated with these analyses is necessary to assess temporal changes in soil properties. Forest soil chemical properties, and methods to measure these properties, often differ from agronomic and...
Authors
Donald S. Ross, Scott W Bailiey, Russell D Briggs, Johanna Curry, Ivan J. Fernandez, Guinevere Fredriksen, Christine L. Goodale, Paul W. Hazlett, Paul R Heine, Chris E. Johnson, John T Larson, Gregory B. Lawrence, Randy K Kolka, Ouimet, D Pare, Daniel D. Richter, Charles D Shirmer, Richard A.F. Warby
Science and Products
Filter Total Items: 109
Methods of soil resampling to monitor changes in the chemical concentrations of forest soils Methods of soil resampling to monitor changes in the chemical concentrations of forest soils
Recent soils research has shown that important chemical soil characteristics can change in less than a decade, often the result of broad environmental changes. Repeated sampling to monitor these changes in forest soils is a relatively new practice that is not well documented in the literature and has only recently been broadly embraced by the scientific community. The objective of this...
Authors
Gregory B. Lawrence, Ivan J. Fernandez, Paul W. Hazlett, Scott W. Bailey, Donald S. Ross, Thomas R. Villars, Angelica Quintana, Ouimet, Michael McHale, Chris E. Johnson, Russell D. Briggs, Robert A. Colter, Jason Siemion, Olivia L. Bartlett, Olga Vargas, Michael R. Antidormi, Mary Margaret Koppers
Photosynthetic and growth response of sugar maple (Acer saccharum Marsh.) mature trees and seedlings to calcium, magnesium, and nitrogen additions in the Catskill Mountains, NY, USA Photosynthetic and growth response of sugar maple (Acer saccharum Marsh.) mature trees and seedlings to calcium, magnesium, and nitrogen additions in the Catskill Mountains, NY, USA
Decline of sugar maple in North American forests has been attributed to changes in soil calcium (Ca) and nitrogen (N) by acidic precipitation. Although N is an essential and usually a limiting factor in forests, atmospheric N deposition may cause N-saturation leading to loss of soil Ca. Such changes can affect carbon gain and growth of sugar maple trees and seedlings. We applied a 22...
Authors
Bahram Momen, Shawna J Behling, Gregory B. Lawrence, Joseph H Sullivan
Regional growth decline of sugar maple (Acer saccharum) and its potential causes Regional growth decline of sugar maple (Acer saccharum) and its potential causes
Sugar maple (Acer saccharum Marsh) has experienced poor vigor, regeneration failure, and elevated mortality across much of its range, but there has been relatively little attention to its growth rates. Based on a well-replicated dendrochronological network of range-centered populations in the Adirondack Mountains (USA), which encompassed a wide gradient of soil fertility, we observed...
Authors
Daniel A. Bishop, Colin M. Beier, Neil Pederson, Gregory B. Lawrence, John C Stella, Timothy J. Sullivan
Declining acidic deposition begins reversal of forest-soil acidification in the northeastern U.S. and eastern Canada Declining acidic deposition begins reversal of forest-soil acidification in the northeastern U.S. and eastern Canada
Decreasing trends in acidic deposition levels over the past several decades have led to partial chemical recovery of surface waters. However, depletion of soil Ca from acidic deposition has slowed surface water recovery and led to the impairment of both aquatic and terrestrial ecosystems. Nevertheless, documentation of acidic deposition effects on soils has been limited, and little is...
Authors
Gregory B. Lawrence, Paul W. Hazlett, Ivan J. Fernandez, Ouimet, Scott W. Bailey, Walter C. Shortle, Kevin T. Smith, Michael R. Antidormi
Coastal plain pond water quality and mercury contend of biota of the Long Island Central Pine Barrens and Mashomack Preserve: Effects of atmospheric deposition and human development Coastal plain pond water quality and mercury contend of biota of the Long Island Central Pine Barrens and Mashomack Preserve: Effects of atmospheric deposition and human development
Pine barrens are considered an imperiled ecosystem in the northeastern U.S. The Suffolk County Pine Barrens, once the second largest in the Northeast, were substantially reduced and fragmented by development during the 20th century. The coastal plain ponds being considered in this study occur in central Suffolk County within the Long Island Central Pine Barrens region. This highly unique...
Authors
Gregory B. Lawrence, Jason Siemion, Oksana P. Lane
Inter-laboratory variation in the chemical analysis of acidic forest soil reference samples from eastern North America Inter-laboratory variation in the chemical analysis of acidic forest soil reference samples from eastern North America
Long-term forest soil monitoring and research often requires a comparison of laboratory data generated at different times and in different laboratories. Quantifying the uncertainty associated with these analyses is necessary to assess temporal changes in soil properties. Forest soil chemical properties, and methods to measure these properties, often differ from agronomic and...
Authors
Donald S. Ross, Scott W Bailiey, Russell D Briggs, Johanna Curry, Ivan J. Fernandez, Guinevere Fredriksen, Christine L. Goodale, Paul W. Hazlett, Paul R Heine, Chris E. Johnson, John T Larson, Gregory B. Lawrence, Randy K Kolka, Ouimet, D Pare, Daniel D. Richter, Charles D Shirmer, Richard A.F. Warby