Search Results - "Clein, J S"

Importance of recent shifts in soil thermal dynamics on growing season length, productivity, and carbon sequestration in terrestrial high-latitude ecosystems by EUSKIRCHEN, E. S., McGUIRE, A. D., KICKLIGHTER, D. W., ZHUANG, Q., CLEIN, J. S., DARGAVILLE, R. J., DYE, D. G., KIMBALL, J. S., McDONALD, K. C., MELILLO, J. M., ROMANOVSKY, V. E., SMITH, N. V.

“…In terrestrial high‐latitude regions, observations indicate recent changes in snow cover, permafrost, and soil freeze–thaw transitions due to climate change…”
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The role of historical fire disturbance in the carbon dynamics of the pan-boreal region: A process-based analysis by Balshi, M. S., McGuire, A. D., Zhuang, Q., Melillo, J., Kicklighter, D. W., Kasischke, E., Wirth, C., Flannigan, M., Harden, J., Clein, J. S., Burnside, T. J., McAllister, J., Kurz, W. A., Apps, M., Shvidenko, A.

“…Wildfire is a common occurrence in ecosystems of northern high latitudes, and changes in the fire regime of this region have consequences for carbon feedbacks…”
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Carbon balance of the terrestrial biosphere in the Twentieth Century: Analyses of CO2, climate and land use effects with four process-based ecosystem models by McGuire, A. D., Sitch, S., Clein, J. S., Dargaville, R., Esser, G., Foley, J., Heimann, M., Joos, F., Kaplan, J., Kicklighter, D. W., Meier, R. A., Melillo, J. M., Moore, B., Prentice, I. C., Ramankutty, N., Reichenau, T., Schloss, A., Tian, H., Williams, L. J., Wittenberg, U.

“…The concurrent effects of increasing atmospheric CO2 concentration, climate variability, and cropland establishment and abandonment on terrestrial carbon…”
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Microbial response to freeze-thaw cycles in tundra and taiga soils by Schimel, Joshua P., Clein, Joy S.

“…Four tundra and taiga soils were experimentally subjected to three freeze-thaw cycles (5 days each at −5°C and +5°C). After each thaw, there was an initial…”
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Modelling carbon responses of tundra ecosystems to historical and projected climate: sensitivity of pan-Arctic carbon storage to temporal and spatial variation in climate by Mcguire, A. D., Clein, J. S., Melillo, J. M., Kicklighter, D. W., Meier, R. A., Vorosmarty, C. J., Serreze, M. C.

“…Summary Historical and projected climate trends for high latitudes show substantial temporal and spatial variability. To identify uncertainties in simulating…”
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Boreal forest CO2 exchange and evapotranspiration predicted by nine ecosystem process models: Intermodel comparisons and relationships to field measurements by Amthor, J. S., Chen, J. M., Clein, J. S., Frolking, S. E., Goulden, M. L., Grant, R. F., Kimball, J. S., King, A. W., McGuire, A. D., Nikolov, N. T., Potter, C. S., Wang, S., Wofsy, S. C.

“…Nine ecosystem process models were used to predict CO2 and water vapor exchanges by a 150‐year‐old black spruce forest in central Canada during 1994–1996 to…”
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Modelling carbon responses of tundra ecosystems to historical and projected climate: a comparison of a plot- and a global-scale ecosystem model to identify process-based uncertainties by Clein, J. S., Kwiatkowski, B. L., McGuire, A. D., Hobbie, J. E., Rastetter, E. B., Melillo, J. M., Kicklighter, D. W.

“…Summary We are developing a process‐based modelling approach to investigate how carbon (C) storage of tundra across the entire Arctic will respond to projected…”
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Historical and projected carbon balance of mature black spruce ecosystems across North America: the role of carbon–nitrogen interactions by Clein, J S, McGuire, A D, Zhang, X, Kicklighter, D W, Melillo, J M, Wofsy, S C, Jarvis, P G, Massheder, J M

“…The role of carbon (C) and nitrogen (N) interactions on sequestration of atmospheric CO2 in black spruce ecosystems across North America was evaluated with the…”
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Net Carbon Exchange Across the Arctic Tundra-Boreal Forest Transition in Alaska 1981-2000 by Thompson, C. C, McGuire, A. D, Clein, J. S, Chapin, F. S. III, Beringer, J

“…Shifts in the carbon balance of high-latitude ecosystems could result from differential responses of vegetation and soil processes to changing moisture and…”
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Evaluation of terrestrial carbon cycle models with atmospheric CO2 measurements: Results from transient simulations considering increasing CO2, climate, and land-use effects by Dargaville, R. J., Heimann, M., McGuire, A. D., Prentice, I. C., Kicklighter, D. W., Joos, F., Clein, J. S., Esser, G., Foley, J., Kaplan, J., Meier, R. A., Melillo, J. M., Moore III, B., Ramankutty, N., Reichenau, T., Schloss, A., Sitch, S., Tian, H., Williams, L. J., Wittenberg, U.

“…An atmospheric transport model and observations of atmospheric CO2 are used to evaluate the performance of four Terrestrial Carbon Models (TCMs) in simulating…”
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Moisture effects on microbial activity and community structure in decomposing birch litter in the Alaskan taiga by Schimel, Joshua P., Gulledge, Jay M., Clein-Curley, Joy S., Lindstrom, Jon E., Braddock, Joan F.

“…We carried out a field experiment to evaluate the effect of moisture regime on microbial biomass and activity in birch litter in the Alaskan taiga. Litter bags…”
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Modeling the Effects of Snowpack on Heterotrophic Respiration across Northern Temperate and High Latitude Regions: Comparison with Measurements of Atmospheric Carbon Dioxide in High Latitudes by McGuire, A. D., Melillo, J. M., Randerson, J. T., Parton, W. J., Heimann, M., Meier, R. A., Clein, J. S., Kicklighter, D. W., Sauf, W.

“…Simulations by global terrestrial biogeochemical models (TBMs) consistently underestimate the concentration of atmospheric carbon dioxide (CO2) at high…”
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Microbial activity of tundra and taiga soils at sub-zero temperatures by Clein, Joy S., Schimel, Joshua P.

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Nitrogen turnover and availability during succession from alder to poplar in Alaskan taiga forests by Clein, Joy S., Schimel, Joshua P.

“…Primary succession on the Tanana river floodplain progresses from alder, with C-limited microbes and rapid nitrification, to poplar, with N-limited microbes…”
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Evaluation of terrestrial carbon cycle models with atmospheric CO sub(2) measurements: Results from transient simulations considering increasing CO sub(2), climate, and land-use effects by Dargaville, R J, Heimann, M, McGuire, AD, Prentice, I C, Kicklighter, D W, Joos, F, Clein, J S, Esser, G, Foley, J, Kaplan, J, Meier, R A, Melillo, J M, Moore, B III, Ramankutty, N

“…An atmospheric transport model and observations of atmospheric CO sub(2) are used to evaluate the performance of four Terrestrial Carbon Models (TCMs) in…”
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Boreal forest CO 2 exchange and evapotranspiration predicted by nine ecosystem process models: Intermodel comparisons and relationships to field measurements by Amthor, J. S., Chen, J. M., Clein, J. S., Frolking, S. E., Goulden, M. L., Grant, R. F., Kimball, J. S., King, A. W., McGuire, A. D., Nikolov, N. T., Potter, C. S., Wang, S., Wofsy, S. C.

“…Nine ecosystem process models were used to predict CO 2 and water vapor exchanges by a 150‐year‐old black spruce forest in central Canada during 1994–1996 to…”
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Nitrogen turnover and availability during succession from alder to poplar in Alaska taiga forests by CLEIN, J. S, SCHIMEL, J. P

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Evaluation of terrestrial carbon cycle models with atmospheric CO 2 measurements: Results from transient simulations considering increasing CO 2 , climate, and land‐use effects by Dargaville, R. J., Heimann, M., McGuire, A. D., Prentice, I. C., Kicklighter, D. W., Joos, F., Clein, J. S., Esser, G., Foley, J., Kaplan, J., Meier, R. A., Melillo, J. M., Moore, B., Ramankutty, N., Reichenau, T., Schloss, A., Sitch, S., Tian, H., Williams, L. J., Wittenberg, U.

“…An atmospheric transport model and observations of atmospheric CO 2 are used to evaluate the performance of four Terrestrial Carbon Models (TCMs) in simulating…”
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Boreal forest CO2 exchange and evapotranspiration predicted by nine ecosystem process models: Intermodel comparisons and relationships to field measurements : Scaling from plot to region (BOREAS III) by AMTHOR, J. S, CHEN, J. M, POTTER, C. S, WANG, S, WOFSY, S. C, CLEIN, J. S, FROLKING, S. E, GOULDEN, M. L, GRANT, R. F, KIMBALL, J. S, KING, A. W, MCGUIRE, A. D, NIKOLOV, N. T

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Comparison of boreal ecosystem model sensitivity to variability in climate and forest site parameters by Potter, Christopher S., Wang, Shusen, Nikolov, Ned T., McGuire, A. David, Liu, Jane, King, Anthony W., Kimball, John S., Grant, Robert F., Frolking, Steven E., Clein, Joy S., Chen, Jing M., Amthor, Jeffrey S.

“…Ecosystem models are useful tools for evaluating environmental controls on carbon and water cycles under past or future conditions. In this paper we compare…”
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