Search Results - "Johnson, Dale W"

How strongly can forest management influence soil carbon sequestration? by Jandl, Robert, Lindner, Marcus, Vesterdal, Lars, Bauwens, Bram, Baritz, Rainer, Hagedorn, Frank, Johnson, Dale W., Minkkinen, Kari, Byrne, Kenneth A.

“…We reviewed the experimental evidence for long-term carbon (C) sequestration in soils as consequence of specific forest management strategies. Utilization of…”
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Does accelerated soil organic matter decomposition in the presence of plants increase plant N availability? by Dijkstra, Feike A., Bader, Nicholas E., Johnson, Dale W., Cheng, Weixin

“…Plant roots can increase microbial activity and soil organic matter (SOM) decomposition via rhizosphere priming effects. It is virtually unknown how…”
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Effects of forest management on soil C and N storage: meta analysis by Johnson, Dale W, Curtis, Peter S

“…The effects of forest management on soil carbon (C) and nitrogen (N) are important to understand not only because these are often master variables determining…”
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Ecological Effects of Nitrogen Deposition in the Western United States by FENN, MARK E, BARON, JILL S, ALLEN, EDITH B, RUETH, HEATHER M, NYDICK, KOREN R, GEISER, LINDA, BOWMAN, WILLIAM D, SICKMAN, JAMES O, MEIXNER, THOMAS, JOHNSON, DALE W, NEITLICH, PETER

“…In the western United States vast acreages of land are exposed to low levels of atmospheric nitrogen (N) deposition, with interspersed hotspots of elevated N…”
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Below-ground process responses to elevated CO2 and temperature: a discussion of observations, measurement methods, and models by Pendall, Elise, Bridgham, Scott, Hanson, Paul J., Hungate, Bruce, Kicklighter, David W., Johnson, Dale W., Law, Beverly E., Luo, Yiqi, Megonigal, J. Patrick, Olsrud, Maria, Ryan, Michael G., Wan, Shiqiang

“…Rising atmospheric CO2 and temperatures are probably altering ecosystem carbon cycling, causing both positive and negative feedbacks to climate. Below-ground…”
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Cumulative response of ecosystem carbon and nitrogen stocks to chronic CO2 exposure in a subtropical oak woodland by Hungate, Bruce A., Dijkstra, Paul, Wu, Zhuoting, Duval, Benjamin D., Day, Frank P., Johnson, Dale W., Megonigal, J. Patrick, Brown, Alisha L. P., Garland, Jay L.

“…Rising atmospheric carbon dioxide (CO2) could alter the carbon (C) and nitrogen (N) content of ecosystems, yet the magnitude of these effects are not well…”
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Prolonged suppression of ecosystem carbon dioxide uptake after an anomalously warm year by Arnone, John A. III, Verburg, Paul S.J, Johnson, Dale W, Larsen, Jessica D, Jasoni, Richard L, Lucchesi, Annmarie J, Batts, Candace M, von Nagy, Christopher, Coulombe, William G, Schorran, David E

“…Terrestrial ecosystems control carbon dioxide fluxes to and from the atmosphere through photosynthesis and respiration, a balance between net primary…”
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Nitrogen budgets of forest ecosystems: A review by Johnson, Dale W., Turner, John

“…•Many forest ecosystems contain less N than would be expected from what is known of millenial scale N inputs.•Fire is suspected as a major cause of N loss in…”
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Concentration‐discharge relationships in headwater streams of the Sierra Nevada, California by Hunsaker, Carolyn T., Johnson, Dale W.

“…We examined stream water concentration‐discharge relationships for eight small, forest watersheds ranging in elevation from 1485 to 2465 m in the southern…”
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Element pool changes within a scrub-oak ecosystem after 11 years of exposure to elevated CO2 by Duval, Benjamin D, Dijkstra, Paul, Drake, Bert G, Johnson, Dale W, Ketterer, Michael E, Megonigal, J Patrick, Hungate, Bruce A

“…The effects of elevated CO2 on ecosystem element stocks are equivocal, in part because cumulative effects of CO2 on element pools are difficult to detect. We…”
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Fire, hurricane and carbon dioxide: effects on net primary production of a subtropical woodland by Hungate, Bruce A., Day, Frank P., Dijkstra, Paul, Duval, Benjamin D., Hinkle, C. Ross, Langley, J. Adam, Megonigal, J. Patrick, Stiling, Peter, Johnson, Dale W., Drake, Bert G.

“…Disturbance affects most terrestrial ecosystems and has the potential to shape their responses to chronic environmental change. Scrub-oak vegetation…”
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Prescribed Fire, Soil, and Plants: Burn Effects and Interactions in the Central Great Basin by Rau, Benjamin M., Chambers, Jeanne C., Blank, Robert R., Johnson, Dale W.

“…Pinyon and juniper expansion into sagebrush ecosystems results in decreased cover and biomass of perennial grasses and forbs. We examine the effectiveness of…”
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The Median Isn’t the Message: soil nutrient hot spots have a disproportionate influence on biogeochemical structure across years, seasons, and depths by Barnes, Morgan E., Johnson, Dale W., Hart, Stephen C.

“…Soil nutrient distribution is heterogeneous in space and time, potentially altering nutrient acquisition by trees and microorganisms. Ecologists have…”
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Progressive N limitation in forests: review and implications for long-term responses to elevated CO2 by Johnson, Dale W

“…Field studies have shown that elevated CO2 can cause increased forest growth over the short term (<6 years) even in the face of N limitation. This is…”
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The Effects of Slash Pile Burning on Soil and Water Macronutrients by JOHNSON, Brittany G, JOHNSON, Dale W, MILLER, Watkins W, CARROLL-MOORE, Erin M, BOARD, David I

“…Significant effects of slash pile burning on soil chemistry and water quality were observed in forested sites in the eastern Sierra Nevada Mountains of Nevada…”
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Tracing the source of soil organic matter eroded from temperate forest catchments using carbon and nitrogen isotopes by McCorkle, Emma P., Berhe, Asmeret Asefaw, Hunsaker, Carolyn T., Johnson, Dale W., McFarlane, Karis J., Fogel, Marilyn L., Hart, Stephen C.

“…Soil erosion continuously redistributes soil and associated soil organic matter (SOM) on the Earth's surface, with important implications for biogeochemical…”
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Impacts of an anomalously warm year on soil nitrogen availability in experimentally manipulated intact tallgrass prairie ecosystems by VERBURG, PAUL S.J, JOHNSON, DALE W, SCHORRAN, DAVID E, WALLACE, LINDA L, LUO, Y, ARNONE III, JOHN A

“…Global climate change can potentially increase the frequency of climate anomalies. Anomalously warm years may cause an increase in soil nitrogen (N)…”
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Potential canopy interception of nitrogen in the Pacific Northwest, USA by Klopatek, Jeffrey M., Barry, Matthew J., Johnson, Dale W.

“…Nitrogen deposition is increasing worldwide from anthropogenic sources and encroaching upon previously N limited ecosystems. Recent literature reports…”
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Elevated CO2 increases nitrogen fixation and decreases soil nitrogen mineralization in Florida scrub oak by Hungate, B.A, Dijkstra, P, Johnson, D.W, Hinkle, C.R, Drake, B.G

“…Summary We report changes in nitrogen cycling in Florida scrub oak in response to elevated atmospheric CO2 during the first 14 months of experimental…”
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The Long-Term Effects of Wildfire and Post-Fire Vegetation on Sierra Nevada Forest Soils by Watkins W. Miller, Benjamin M. Rau, Michelle McNulty, Roger F. Walker, Dale W. Johnson

“…This paper compares carbon (C) and nutrient contents in soils (Alfisols derived from andesite), forest floor and vegetation in a former fire (1960) and an…”
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