Mineral nutrition and plant responses to elevated levels of atmospheric CO{sub 2} Metadata

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Title

  • Main Title Mineral nutrition and plant responses to elevated levels of atmospheric CO{sub 2}

Creator

  • Author: Ahluwalia, A.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: USDOE, Washington, DC (United States)

Publisher

  • Name: Brookhaven National Laboratory
    Place of Publication: Upton, New York
    Additional Info: Brookhaven National Lab., Upton, NY (United States)

Date

  • Creation: 1996-08-01

Language

  • English

Description

  • Content Description: The atmospheric concentration of CO{sub 2}, a radiatively-active ({open_quotes}green-house{close_quotes}) gas, is increasing. This increase is considered a post-industrial phenomenon attributable to increasing rates of fossil fuel combustion and changing land use practices, particularly deforestation. Climate changes resulting from such elevated atmospheric CO{sub 2} levels, in addition to the direct effects of increased CO{sub 2}, are expected to modify the productivity of forests and alter species distributions. Elevated levels of CO{sub 2} have been shown, in some cases, to lead to enhanced growth rates in plants, particularly those with C{sub 3} metabolism - indicating that plant growth is CO{sub 2}-limited in these situations. Since the major process underlying growth is CO{sub 2} assimilation via photosynthesis in leaves, plant growth represents a potential for sequestering atmospheric carbon into biomass, but this potential could be hampered by plant carbon sink size. Carbon sinks are utilization sites for assimilated carbon, enabling carbon assimilation to proceed without potential inhibition from the accumulation of assimilate (photosynthate). Plant growth provides new sinks for assimilated carbon which permits greater uptake of atmospheric carbon dioxide. However, sinks are, on the whole, reduced in size by stress events due to the adverse effects of stress on photosynthetic rates and therefore growth. This document reviews some of the literature on plant responses to increasing levels of atmospheric carbon dioxide and to inadequate nutrient supply rates, and with this background, the potential for nutrient-limited plants to respond to increasing carbon dioxide is addressed. Conclusions from the literature review are then tested experimentally by means of a case study exploring carbon-nitrogen interactions in seedlings of loblolly pine.
  • Physical Description: 111 p.

Subject

  • Keyword: Response Modifying Factors
  • Keyword: Plants
  • Keyword: Carbon Dioxide
  • Keyword: Nutrients
  • Keyword: Pines
  • Keyword: Ecological Concentration
  • STI Subject Categories: 56 Biology And Medicine, Applied Studies
  • Keyword: Minerals
  • Keyword: Plant Growth
  • Keyword: Biological Effects

Source

  • Other Information: PBD: Aug 1996

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Other: DE97000492
  • Report No.: BNL--63364
  • Grant Number: AC02-76CH00016
  • DOI: 10.2172/380351
  • Office of Scientific & Technical Information Report Number: 380351
  • Archival Resource Key: ark:/67531/metadc686366

Note

  • Display Note: OSTI as DE97000492
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