Climatic effects on tundra carbon storage inferred from experimental data and a model

McKane, R B; Rastetter, E B; Shaver, G R

doi:10.1890/0012-9658(1997)078[1170:CEOTCS]2.0.CO;2

Title: Climatic effects on tundra carbon storage inferred from experimental data and a model

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Abstract

A process-based model of ecosystem carbon (C) and nitrogen (N) dynamics, MBL-GEM (Marine Biological Laboratory General Ecosystem Model) was used, to integrate and analyze the results of several experiments that examined the response of arctic tussock tundra to manipulations of CO{sub 2}, temperature, light, and soil nutrients. The experiments manipulated these variables over 3- to 9-yr periods and were intended to simulate anticipated changes in the arctic environment. Our objective was to use the model to extend the analysis of the experimental data so that unmeasured changes in ecosystem C storage and the underlying mechanisms controlling those changes could be estimated and compared. Using an inverse calibration method, we derived a single parameter set for the model that closely simulated the measured responses of tussock tundra to all of the experimental treatments. This parameterization allowed us to infer confidence limits for ecosystem components and processes that were not directly measured in the experiments. Thus, we used the model to estimate changes in ecosystem C storage by inferring key soil processes within the constraints imposed by measured components of the ecosystem C budget. 28 refs., 2 figs., 4 tabs.

Authors:

McKane, R B; Rastetter, E B; Shaver, G R ^[1]

Ecosystems Center, Woods Hole, MA (United States); and others

Publication Date:: Sun Jun 01 00:00:00 EDT 1997

Sponsoring Org.:: USDOE

OSTI Identifier:: 585129

Resource Type:: Journal Article

Journal Name:: Ecology

Additional Journal Information:: Journal Volume: 78; Journal Issue: 4; Other Information: PBD: Jun 1997

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES; CLIMATIC CHANGE; CARBON SINKS; TUNDRA; CARBON CYCLE; EXPERIMENTAL DATA; MATHEMATICAL MODELS

Citation Formats


                    McKane, R B, Rastetter, E B, and Shaver, G R. Climatic effects on tundra carbon storage inferred from experimental data and a model.  United States: N. p., 1997. 
        Web.  doi:10.1890/0012-9658(1997)078[1170:CEOTCS]2.0.CO;2.

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                    McKane, R B, Rastetter, E B, & Shaver, G R. Climatic effects on tundra carbon storage inferred from experimental data and a model.  United States.  https://doi.org/10.1890/0012-9658(1997)078[1170:CEOTCS]2.0.CO;2

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                    McKane, R B, Rastetter, E B, and Shaver, G R. 1997.  
        "Climatic effects on tundra carbon storage inferred from experimental data and a model".  United States.  https://doi.org/10.1890/0012-9658(1997)078[1170:CEOTCS]2.0.CO;2.

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@article{osti_585129,

  title        = {Climatic effects on tundra carbon storage inferred from experimental data and a model},

  author       = {McKane, R B and Rastetter, E B and Shaver, G R},

  abstractNote = {A process-based model of ecosystem carbon (C) and nitrogen (N) dynamics, MBL-GEM (Marine Biological Laboratory General Ecosystem Model) was used, to integrate and analyze the results of several experiments that examined the response of arctic tussock tundra to manipulations of CO{sub 2}, temperature, light, and soil nutrients. The experiments manipulated these variables over 3- to 9-yr periods and were intended to simulate anticipated changes in the arctic environment. Our objective was to use the model to extend the analysis of the experimental data so that unmeasured changes in ecosystem C storage and the underlying mechanisms controlling those changes could be estimated and compared. Using an inverse calibration method, we derived a single parameter set for the model that closely simulated the measured responses of tussock tundra to all of the experimental treatments. This parameterization allowed us to infer confidence limits for ecosystem components and processes that were not directly measured in the experiments. Thus, we used the model to estimate changes in ecosystem C storage by inferring key soil processes within the constraints imposed by measured components of the ecosystem C budget. 28 refs., 2 figs., 4 tabs.},

  doi          = {10.1890/0012-9658(1997)078[1170:CEOTCS]2.0.CO;2},

  url          = {https://www.osti.gov/biblio/585129},
  journal      = {Ecology},
number       = 4,

  volume       = 78,

  place        = {United States},

  year         = {Sun Jun 01 00:00:00 EDT 1997},

  month        = {Sun Jun 01 00:00:00 EDT 1997}

}

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https://doi.org/10.1890/0012-9658(1997)078[1170:CEOTCS]2.0.CO;2

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