Ebook: Belowground Responses to Rising Atmospheric CO2: Implications for Plants, Soil Biota, and Ecosystem Processes: Proceedings of a workshop held at the University of Michigan Biological Station, Pellston, Michigan, USA, May 29–June 2, 1993

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.

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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.

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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.

Content:
Front Matter....Pages I-VII
Belowground responses to rising atmospheric CO2: Implications for plants, soil biota and ecosystem processes....Pages 1-6
Front Matter....Pages 7-7
Issues and perspectives for investigating root responses to elevated atmospheric carbon dioxide....Pages 9-20
Root response to CO2 enrichment and nitrogen supply in loblolly pine....Pages 21-32
Free-air CO2 enrichment of cotton: vertical and lateral root distribution patterns....Pages 33-44
Above- and belowground response of Populus grandidentata to elevated atmospheric CO2 and soil N availability....Pages 45-51
Front Matter....Pages 53-53
Responses of soil biota to elevated atmospheric carbon dioxide....Pages 55-65
Soil microbial response in tallgrass prairie to elevated CO2 ....Pages 67-74
The response of mycorrhizal colonization to elevated CO2 and climate change in Pascopyrum smithii and Bouteloua gracilis ....Pages 75-80
Effect of elevated CO2 on mycorrhizal colonization of loblolly pine (Pinus taeda L.) seedlings....Pages 81-88
Evaluation of the use of a model rhizodeposition technique to separate root and microbial respiration in soil....Pages 89-101
Front Matter....Pages 103-103
Biomass production in a nitrogen-fertilized, tallgrass prairie ecosystem exposed to ambient and elevated levels of CO2 ....Pages 105-113
Effects of elevated CO2 and nitrogen fertilization pretreatments on decomposition on tallgrass prairie leaf litter....Pages 115-127
Soil pCO2, soil respiration, and root activity in CO2-fumigated and nitrogen-fertilized ponderosa pine....Pages 129-138
Enhanced root system C-sink activity, water relations and aspects of nutrient acquisition in mycotrophic Bouteloua gracilis subjected to CO2 enrichment....Pages 139-146
Front Matter....Pages 147-147
Modeling the belowground response of plants and soil biota to edaphic and climatic change — What can we expect to gain?....Pages 149-160
Carbon cost of root systems: an architectural approach....Pages 161-169
Back Matter....Pages 171-173

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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.

Content:
Front Matter....Pages I-VII
Belowground responses to rising atmospheric CO2: Implications for plants, soil biota and ecosystem processes....Pages 1-6
Front Matter....Pages 7-7
Issues and perspectives for investigating root responses to elevated atmospheric carbon dioxide....Pages 9-20
Root response to CO2 enrichment and nitrogen supply in loblolly pine....Pages 21-32
Free-air CO2 enrichment of cotton: vertical and lateral root distribution patterns....Pages 33-44
Above- and belowground response of Populus grandidentata to elevated atmospheric CO2 and soil N availability....Pages 45-51
Front Matter....Pages 53-53
Responses of soil biota to elevated atmospheric carbon dioxide....Pages 55-65
Soil microbial response in tallgrass prairie to elevated CO2 ....Pages 67-74
The response of mycorrhizal colonization to elevated CO2 and climate change in Pascopyrum smithii and Bouteloua gracilis ....Pages 75-80
Effect of elevated CO2 on mycorrhizal colonization of loblolly pine (Pinus taeda L.) seedlings....Pages 81-88
Evaluation of the use of a model rhizodeposition technique to separate root and microbial respiration in soil....Pages 89-101
Front Matter....Pages 103-103
Biomass production in a nitrogen-fertilized, tallgrass prairie ecosystem exposed to ambient and elevated levels of CO2 ....Pages 105-113
Effects of elevated CO2 and nitrogen fertilization pretreatments on decomposition on tallgrass prairie leaf litter....Pages 115-127
Soil pCO2, soil respiration, and root activity in CO2-fumigated and nitrogen-fertilized ponderosa pine....Pages 129-138
Enhanced root system C-sink activity, water relations and aspects of nutrient acquisition in mycotrophic Bouteloua gracilis subjected to CO2 enrichment....Pages 139-146
Front Matter....Pages 147-147
Modeling the belowground response of plants and soil biota to edaphic and climatic change — What can we expect to gain?....Pages 149-160
Carbon cost of root systems: an architectural approach....Pages 161-169
Back Matter....Pages 171-173
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