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Elevated Carbon Dioxide

Author: M. B. Kirkham

Publisher: CRC Press

Published: 2019-09-25

Total Pages: 0

ISBN-13: 9780367382995

Drawing on a host of scientific studies, this text explores how rising levels of CO2 in the atmosphere have impacted water in plants and soils. It discusses drought, the soil-plant-atmosphere continuum, the soil atmosphere, root growth, and variable oxygen concentration of soil. The book also covers the use of carbon isotope ratios in plant science, stomatal conductance and density, transpiration and evapotranspiration, water use efficiency, C4 photosynthesis, plant anatomy, phenology, and measures of plant growth. More than 200 high quality figures illustrate the concepts discussed.

Managing Water Resources in the West Under Conditions of Climate Uncertainty

Author: National Research Council

Publisher: National Academies Press

Published: 1991-02-01

Total Pages: 359

ISBN-13: 0309046777

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The question of whether the earth's climate is changing in some significant human-induced way remains a matter of much debate. But the fact that climate is variable over time is well known. These two elements of climatic uncertainty affect water resources planning and management in the American West. Managing Water Resources in the West Under Conditions of Climate Uncertainty examines the scientific basis for predictions of climate change, the implications of climate uncertainty for water resources management, and the management options available for responding to climate variability and potential climate change.

Regulation of Tissue Oxygenation, Second Edition

Author: Roland N. Pittman

Publisher: Biota Publishing

Published: 2016-08-18

Total Pages: 117

ISBN-13: 1615047212

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This presentation describes various aspects of the regulation of tissue oxygenation, including the roles of the circulatory system, respiratory system, and blood, the carrier of oxygen within these components of the cardiorespiratory system. The respiratory system takes oxygen from the atmosphere and transports it by diffusion from the air in the alveoli to the blood flowing through the pulmonary capillaries. The cardiovascular system then moves the oxygenated blood from the heart to the microcirculation of the various organs by convection, where oxygen is released from hemoglobin in the red blood cells and moves to the parenchymal cells of each tissue by diffusion. Oxygen that has diffused into cells is then utilized in the mitochondria to produce adenosine triphosphate (ATP), the energy currency of all cells. The mitochondria are able to produce ATP until the oxygen tension or PO2 on the cell surface falls to a critical level of about 4–5 mm Hg. Thus, in order to meet the energetic needs of cells, it is important to maintain a continuous supply of oxygen to the mitochondria at or above the critical PO2 . In order to accomplish this desired outcome, the cardiorespiratory system, including the blood, must be capable of regulation to ensure survival of all tissues under a wide range of circumstances. The purpose of this presentation is to provide basic information about the operation and regulation of the cardiovascular and respiratory systems, as well as the properties of the blood and parenchymal cells, so that a fundamental understanding of the regulation of tissue oxygenation is achieved.

The impact of rising carbon dioxide levels on crop nutrients and human health

Author: Smith, Matthew R.

Publisher: Intl Food Policy Res Inst

Published: 2018-07-06

Total Pages: 4

ISBN-13:

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Carbon dioxide (CO2) levels are rising globally at a rapid pace, on track to surpass 550 parts per million (ppm) by midcentury. Studies have found that, when grown under elevated CO2 concentrations of 546–586 ppm, many food crops—including wheat, rice, barley, and soybeans—have lowered concentrations of nutrients, including many that are important for overall health, such as iron, zinc, and protein. Elevated CO2 also affects both the quantity and quality of forage, thereby affecting animal performance and production and, consequently, the availability of nutrients from animal-source foods, such as meat, milk, and eggs. This loss of dietary nutrients in foods could translate to increased nutritional deficiency for hundreds of millions of people already on the brink of deficiency—mainly developing countries in Asia, the Middle East, and North Africa based on dietary preferences for the commodities most affected. This policy note examines the link between rising CO2 levels and declining nutritional content for a number of major crops, as well as forage. The discussion includes a comparison of the varying effects by crop, and strategies to address this challenge in the context of climate change.

Carbon Dioxide, Populations, and Communities

Author: Fakhri A. Bazzaz

Publisher: Elsevier

Published: 1996-07-17

Total Pages: 489

ISBN-13: 0080500722

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In past decades and in association with a continuing global industrial development, the global atmospheric concentration of carbon dioxide has been rising. Among the many predictions made concerning this disturbing trend is global warming sufficient to melt polar ice-caps thereby dramatically altering existing shorelines. This book will help fill an obvious gap in the carbon dioxide debate by substituting date for speculation. * * Includes contributions from leading authorities around the world * Serves as a companion to Carbon Dioxide and Terrestrial Ecosystems * The first book of its kind to explore evolutionary responses of both populations and communities to elevated carbon dioxide

Acute Exposure Guideline Levels for Selected Airborne Chemicals

Author: National Research Council

Publisher: National Academies Press

Published: 2010-03-18

Total Pages: 465

ISBN-13: 030915233X

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This book is the eighth volume in the series Acute Exposure Guideline Levels for Selected Airborne Chemicals, and reviews AEGLs for acrolein, carbon monoxide, 1,2-dichloroethene, ethylenimine, fluorine, hydrazine, peracetic acid, propylenimine, and sulfur dioxide for scientific accuracy, completeness, and consistency with the NRC guideline reports.

Elevated Carbon Dioxide

Author: M.B. Kirkham

Publisher: CRC Press

Published: 2016-04-19

Total Pages: 406

ISBN-13: 1439855056

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Between 1958 and 2008, the CO2 concentration in the atmosphere increased from 316 to 385 ppm. Continued increases in CO2 concentration will significantly affect long-term climate change, including variations in agricultural yields. Focusing on this critical issue, Elevated Carbon Dioxide: Impacts on Soil and Plant Water Relations presents research

Carbon Dioxide and Environmental Stress

Author: Yiqi Luo

Publisher: Academic Press

Published: 1999-04-02

Total Pages: 436

ISBN-13: 9780124603707

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Interactions of CO2 with Water, Temperature, Salinity, UV-B, Ozone, and Nutrients: -- T.C. Hsiao and R.B. Jackson, Interactive Effects of Water Stress and Elevated CO2 on Growth, Photosynthesis, and Water Use Efficiency. -- J.S. Amthor, Increasing Atmospheric CO2 Concentration, Water Use, and Water Stress: Scaling Up from the Plant to the Landscape. -- R.M.M. Crawford and D.W. Wolfe, Temperature: Cellular to Whole Plant and Population Responses. -- S.D. Smith, D.N. Jordan, and E.P. Hamerlynck, Effects of Elevated CO2 and Temperature Stress on Ecosystem Processes. -- R.E. Munns, G.R. Cramer, and M.C. Ball, Interactions Between Rising CO2, Soil Salinity, and Plant Growth. -- J. Rozema, A.H. Teramura, and M.M. Caldwell, Atmospheric CO2 Enrichment and Enhanced Solar Ultraviolet-B Radiation: Gene to Ecosystem Responses. -- A. Polle and E.J. Pell, The Role of Carbon Dioxide in Modifying the Plant Response to Ozone. -- H.H. Rogers, G.B. Runion, S.A. Prior, and H.A. Torbert, Response of Plants ...

Emergency and Continuous Exposure Guidance Levels for Selected Submarine Contaminants

Author: National Research Council

Publisher: National Academies Press

Published: 2007-04-07

Total Pages: 316

ISBN-13: 0309092256

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U.S. Navy personnel who work on submarines are in an enclosed and isolated environment for days or weeks at a time when at sea. Unlike a typical work environment, they are potentially exposed to air contaminants 24 hours a day. To protect workers from potential adverse health effects due to those conditions, the U.S. Navy has established exposure guidance levels for a number of contaminants. The Navy asked a subcommittee of the National Research Council (NRC) to review, and develop when necessary, exposure guidance levels for 10 contaminants. Overall, the subcommittee found the values proposed by the Navy to be suitable for protecting human health. For a few chemicals, the committee proposed levels that were lower than those proposed by the Navy. In conducting its evaluation, the subcommittee found that there is little exposure data available on the submarine environment and echoed a previous recommendation from an earlier NRC report to conduct monitoring that would provide a complete analysis of submarine air and data on exposure of personnel to contaminants.

Advances in Carbon Dioxide Effects Research

Author: L. H. Allen

Publisher:

Published: 1997

Total Pages: 254

ISBN-13:

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