Gregory B Lawrence (Former Employee)
Science and Products
Filter Total Items: 109
Quality-assurance data for routine water analyses by the U.S. Geological Survey Laboratory in Troy, New York, May 1991 through June 1993 Quality-assurance data for routine water analyses by the U.S. Geological Survey Laboratory in Troy, New York, May 1991 through June 1993
No abstract available.
Authors
T.A. Lincoln, D. A. Horan-Ross, M.L. Olson, G.B. Lawrence
Soil and soil solution chemistry under red spruce stands across the northeastern united states Soil and soil solution chemistry under red spruce stands across the northeastern united states
Red spruce ecosystems in the northeastern United States are of interest because this species is undergoing regional decline. Their underlying soils have been examined closely at only a few sites, and information available on red spruce soils throughout this region is limited.This study was conducted to examine soil and soil solution chemistry at red spruce sites in the northeastern US...
Authors
M.B. David, G.B. Lawrence
A new mechanism for calcium loss in forest-floor soils A new mechanism for calcium loss in forest-floor soils
Calcium is the fifth most abundant element in trees, and is an essential component for wood formation and the maintenance of cell walls. Depletion of Ca from the rooting zone can result in acidification of soil1 and surface water2 and possibly growth decline and dieback of red spruce3,4. During the past six decades, concentrations of root-available Ca (exchangeable and acid-extractable...
Authors
G.B. Lawrence, M.B. David, W.C. Shortle
Soil-solution chemistry in a low-elevation spruce-fir ecosystem, Howland, Maine Soil-solution chemistry in a low-elevation spruce-fir ecosystem, Howland, Maine
Soil solutions were collected monthly by tension and zero-tension lysimeters in a low-elevation red spruce stand in east-central Maine from May 1987 through December 1992. Soil solutions collected by Oa tension lysimeters had higher concentrations of most constituents than the Oa zero-tension lysimeters. In Oa horizon soil solutions growing season concentrations for SO4, Ca, and Mg...
Authors
Ivan J. Fernandez, Gregory B. Lawrence, Yowhan Son
Analytical methods of the U.S. Geological Survey's New York District Water-Analysis Laboratory Analytical methods of the U.S. Geological Survey's New York District Water-Analysis Laboratory
The New York District of the U.S. Geological Survey (USGS) in Troy, N.Y., operates a water-analysis laboratory for USGS watershed-research projects in the Northeast that require analyses of precipitation and of dilute surface water and soil water for major ions; it also provides analyses of certain chemical constituents in soils and soil gas samples. This report presents the methods for...
Authors
Gregory B. Lawrence, Tricia A. Lincoln, Debra A. Horan-Ross, Mark L. Olson, Laura A. Waldron
Work plan of the Neversink watershed study in the Catskill Mountains of southeastern New York Work plan of the Neversink watershed study in the Catskill Mountains of southeastern New York
No abstract available.
Authors
Gregory B. Lawrence, Douglas A. Burns, Peter S. Murdoch, Barry P. Baldigo, Y. H. Baevsky
Science and Products
Filter Total Items: 109
Quality-assurance data for routine water analyses by the U.S. Geological Survey Laboratory in Troy, New York, May 1991 through June 1993 Quality-assurance data for routine water analyses by the U.S. Geological Survey Laboratory in Troy, New York, May 1991 through June 1993
No abstract available.
Authors
T.A. Lincoln, D. A. Horan-Ross, M.L. Olson, G.B. Lawrence
Soil and soil solution chemistry under red spruce stands across the northeastern united states Soil and soil solution chemistry under red spruce stands across the northeastern united states
Red spruce ecosystems in the northeastern United States are of interest because this species is undergoing regional decline. Their underlying soils have been examined closely at only a few sites, and information available on red spruce soils throughout this region is limited.This study was conducted to examine soil and soil solution chemistry at red spruce sites in the northeastern US...
Authors
M.B. David, G.B. Lawrence
A new mechanism for calcium loss in forest-floor soils A new mechanism for calcium loss in forest-floor soils
Calcium is the fifth most abundant element in trees, and is an essential component for wood formation and the maintenance of cell walls. Depletion of Ca from the rooting zone can result in acidification of soil1 and surface water2 and possibly growth decline and dieback of red spruce3,4. During the past six decades, concentrations of root-available Ca (exchangeable and acid-extractable...
Authors
G.B. Lawrence, M.B. David, W.C. Shortle
Soil-solution chemistry in a low-elevation spruce-fir ecosystem, Howland, Maine Soil-solution chemistry in a low-elevation spruce-fir ecosystem, Howland, Maine
Soil solutions were collected monthly by tension and zero-tension lysimeters in a low-elevation red spruce stand in east-central Maine from May 1987 through December 1992. Soil solutions collected by Oa tension lysimeters had higher concentrations of most constituents than the Oa zero-tension lysimeters. In Oa horizon soil solutions growing season concentrations for SO4, Ca, and Mg...
Authors
Ivan J. Fernandez, Gregory B. Lawrence, Yowhan Son
Analytical methods of the U.S. Geological Survey's New York District Water-Analysis Laboratory Analytical methods of the U.S. Geological Survey's New York District Water-Analysis Laboratory
The New York District of the U.S. Geological Survey (USGS) in Troy, N.Y., operates a water-analysis laboratory for USGS watershed-research projects in the Northeast that require analyses of precipitation and of dilute surface water and soil water for major ions; it also provides analyses of certain chemical constituents in soils and soil gas samples. This report presents the methods for...
Authors
Gregory B. Lawrence, Tricia A. Lincoln, Debra A. Horan-Ross, Mark L. Olson, Laura A. Waldron
Work plan of the Neversink watershed study in the Catskill Mountains of southeastern New York Work plan of the Neversink watershed study in the Catskill Mountains of southeastern New York
No abstract available.
Authors
Gregory B. Lawrence, Douglas A. Burns, Peter S. Murdoch, Barry P. Baldigo, Y. H. Baevsky