Feedback Effects of Elevated Atmospheric CO2 on the Belowground Cycling of Carbon and Nitrogen PDF Download

Author: Carl J. Mikan
Publisher:
ISBN: 9780599296633
Category :
Languages : en
Pages :

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Author: Luo Yiqi
Publisher: Elsevier
ISBN: 0080500714
Category : Science
Languages : en
Pages : 434

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This book focuses on the interactive effects of environmental stresses with plant and ecosystem functions, especially with respect to changes in the abundance of carbon dioxide. The interaction of stresses with elevated carbon dioxide are presented from the cellular through whole plant ecosystem level. The book carefully considers not only the responses of the above-ground portion of the plant, but also emphasizes the critical role of below-ground (rhizosphere) components (e.g., roots, microbes, soil) in determining the nature and magnitude of these interactions.* Will rising CO2 alter the importance of environmental stress in natural and agricultural ecosystems?* Will environmental stress on plants reduce their capacity to remove CO2 from the atmosphere?* Are some stresses more important than others as we concern ourselves with global change?* Can we develop predictive models useful for scientists and policy-makers?* Where should future research efforts be focused?

Author: P. S. Curtis
Publisher: Springer Science & Business Media
ISBN: 9401708517
Category : Science
Languages : en
Pages : 379

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As atmospheric CO2 increases there will almost certainly be alterations in soil carbon fluxes. It is likely that such alterations will be accompanied by changes in the partitioning of carbon between organic structures and to soil processes. These changes have the potential for further altering the structure and function of terrestrial ecosystems. While there has been increasing recognition of the importance of soil-mediated responses to global climate change, the nature and magnitude of these responses are not well understood. In an effort to expand our assessment of the significance of belowground responses to rising atmospheric CO2, a workshop has been organized that resulted in the peer-reviewed contributions that are contained in this volume.

Author: Kurt S. Pregitzer
Publisher: Elsevier Inc. Chapters
ISBN: 0128055626
Category : Nature
Languages : en
Pages : 27

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The Aspen free-air carbon dioxide (CO2) enrichment (FACE) experiment tested how three developing forest communities responded to elevated concentrations of CO2 and/or tropospheric ozone (O3). Throughout the 11-year experiment, elevated CO2 increased aboveground productivity, whereas the initial negative effects of elevated O3 on aboveground productivity became insignificant over time. During the first 2 years, fine root biomass and soil respiration responded positively to elevated CO2 and negatively to elevated O3. However, after 5 years, O3 effects on fine root biomass were weakly negative or positive and effects on soil respiration were positive. Despite altering litter inputs, neither elevated O3 nor elevated CO2 affected overall soil C storage at the end of the experiment, consistent with observations that elevated CO2 increased and elevated O3 tended to decrease the activity of litter-degrading extracellular enzymes. Overall, our understanding of belowground processes is still insufficient to predict how ecosystems will respond to global change.

Author: George W. Koch
Publisher: Elsevier
ISBN: 0080500706
Category : Science
Languages : en
Pages : 463

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The importance of carbon dioxide extends from cellular to global levels of organization and potential ecological deterioration may be the result of increased CO2 in our atmosphere. Recently, the research emphasis shifted from studies of photosynthesis pathways and plant growth to ground-breaking studies of carbon dioxide balances in ecosystems, regions, and even the entire globe. Carbon Dioxide and Terrestrial Ecosystems addresses these new areas of research. Economically important woody ecosystems are emphasized because they have substantial influence on global carbon dioxide balances. Herbaceous ecosystems (e.g., grasslands, prairies, wetlands) and crop ecosystems are also covered. The interactions among organisms, communities, and ecosystems are modeled, and the book closes with an important synthesis of this growing nexus of research. Carbon Dioxide and Terrestrial Ecosystems is a compilation of detailed scientific studies that reveal how ecosystems generally, and particular plants specifically, respond to changed levels of carbon dioxide. - Contributions from an international team of experts - Empirical examination of the actual effects of carbon dioxide - Variety of terrestrial habitats investigated - Specific plants and whole ecosystems offered as studies

Author: Kirsten S. Hofmockel
Publisher:
ISBN:
Category : Biotic communities
Languages : en
Pages : 200

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Author: Feifei Liu
Publisher:
ISBN:
Category : Atmospheric carbon dioxide
Languages : en
Pages : 328

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Author: Edgar R. Lemon
Publisher: CRC Press
ISBN: 0429705433
Category : Science
Languages : en
Pages : 303

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This book presents information on the direct effects of increased atmospheric CO2 on plants. It considers what we already know about plant responses to various CO2 concentrations. .

Author: T. M. L. Wigley
Publisher: Cambridge University Press
ISBN: 9780521018623
Category : Science
Languages : en
Pages : 312

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Book Description
Reducing carbon dioxide (CO2) emissions is imperative to stabilizing our future climate. Our ability to reduce these emissions combined with an understanding of how much fossil-fuel-derived CO2 the oceans and plants can absorb is central to mitigating climate change. In The Carbon Cycle, leading scientists examine how atmospheric carbon dioxide concentrations have changed in the past and how this may affect the concentrations in the future. They look at the carbon budget and the "missing sink" for carbon dioxide. They offer approaches to modeling the carbon cycle, providing mathematical tools for predicting future levels of carbon dioxide. This comprehensive text incorporates findings from the recent IPCC reports. New insights, and a convergence of ideas and views across several disciplines make this book an important contribution to the global change literature.

Author: James R. Ehleringer
Publisher: Springer Science & Business Media
ISBN: 9780387220697
Category : Nature
Languages : en
Pages : 560

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Book Description
Trees, CO2 concentration, climate change, herbivores, temperature.