Long Term Effects Of Elevated Carbon Dioxide Concentration On Sour Orange Tree Specific Gravity And Anatomy

Author : Michael Carl Wiemann
Publisher : Unknown
Page : 8 pages
File Size : 43,5 Mb
Release : 2008
Category : Atmospheric carbon dioxide
ISBN : UIUC:30112104053746

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Long-term Effects of Elevated Carbon Dioxide Concentration on Sour Orange Tree Specific Gravity and Anatomy by Michael Carl Wiemann Pdf

Exposure to elevated levels of atmospheric CO2 for a period of 17 years resulted in small but statistically significant decreases in wood basic specific gravity and number of rays per millimeter. Other anatomical characteristics (percentages of tissues, number of vessels per square millimeter, vessel diameters, and fiber wall thickness) were unaffected by treatment. Differences due to distance from pith were important, but cardinal direction (north, south, east, west) was not.

Author : Anonim
Publisher : Unknown
Page : 12 pages
File Size : 52,9 Mb
Release : 2007
Category : Atmospheric carbon dioxide
ISBN : WISC:89094241858

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Long-term Effects of Elevated Carbon Dioxide Concentration on Sour Orange Wood Specific Gravity, Modulus of Elasticity, and Microfibril Angle by Anonim Pdf

The carbon dioxide (CO2) concentration of Earth's atmosphere continues to rise. Plants in general are responsive to changing CO2 concentrations, which suggests changes in agricultural productivity in the United States and around the world. The ability of plants to absorb CO2 during photosynthesis and then store carbon in their structure or sequester it in the soil has potential for mitigating the rate of rise of atmospheric CO2 concentration. Since 1987, Bruce Kimball and coworkers at the USDA Agricultural Research Service in Phoenix, Arizona, have maintained a greenhouse gas experiment using sour orange trees maintained in a CO2- enriched environment. These trees were harvested in 2005. During the final massive harvest, many different properties and characteristics of the woody biomass for these sour orange trees were studied. This report focuses only on the mechanical property evaluation of modulus of elasticity (MOE), specific gravity, and microfibril angle. In this study of CO2-exposed sour orange trees, CO2 did not significantly affect specific gravity of sour orange trees. Exposure to CO2 did not significantly affect MOE of sour orange trees. Exposure to CO2 did, however, seem to influence microfibril angle development. Minor interactions between CO2 and cardinal direction affected the MOE and were caused by experimental difference in chamber construction.

Author : Anonim
Publisher : Unknown
Page : 9 pages
File Size : 48,5 Mb
Release : 2007
Category : Atmospheric carbon dioxide
ISBN : OCLC:1021829488

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Long-term Effects of Elevated Carbon Dioxide Concentration on Sour Orange Wood Specific Gravity, Modulus of Elasticity, and Microfibril Angle by Anonim Pdf

The carbon dioxide (CO2) concentration of Earth's atmosphere continues to rise. Plants in general are responsive to changing CO2 concentrations, which suggests changes in agricultural productivity in the United States and around the world. The ability of plants to absorb CO2 during photosynthesis and then store carbon in their structure or sequester it in the soil has potential for mitigating the rate of rise of atmospheric CO2 concentration. Since 1987, Bruce Kimball and coworkers at the USDA Agricultural Research Service in Phoenix, Arizona, have maintained a greenhouse gas experiment using sour orange trees maintained in a CO2- enriched environment. These trees were harvested in 2005. During the final massive harvest, many different properties and characteristics of the woody biomass for these sour orange trees were studied. This report focuses only on the mechanical property evaluation of modulus of elasticity (MOE), specific gravity, and microfibril angle. In this study of CO2-exposed sour orange trees, CO2 did not significantly affect specific gravity of sour orange trees. Exposure to CO2 did not significantly affect MOE of sour orange trees. Exposure to CO2 did, however, seem to influence microfibril angle development. Minor interactions between CO2 and cardinal direction affected the MOE and were caused by experimental difference in chamber construction.

Author : Anonim
Publisher : Unknown
Page : 9 pages
File Size : 53,6 Mb
Release : 2007
Category : Atmospheric carbon dioxide
ISBN : OCLC:180923241

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Long-term Effects of Elevated Carbon Dioxide Concentration on Sour Orange Wood Specific Gravity, Modulus of Elasticity, and Microfibril Angle by Anonim Pdf

The carbon dioxide (CO2) concentration of Earth's atmosphere continues to rise. Plants in general are responsive to changing CO2 concentrations, which suggests changes in agricultural productivity in the United States and around the world. The ability of plants to absorb CO2 during photosynthesis and then store carbon in their structure or sequester it in the soil has potential for mitigating the rate of rise of atmospheric CO2 concentration. Since 1987, Bruce Kimball and coworkers at the USDA Agricultural Research Service in Phoenix, Arizona, have maintained a greenhouse gas experiment using sour orange trees maintained in a CO2- enriched environment. These trees were harvested in 2005. During the final massive harvest, many different properties and characteristics of the woody biomass for these sour orange trees were studied. This report focuses only on the mechanical property evaluation of modulus of elasticity (MOE), specific gravity, and microfibril angle. In this study of CO2-exposed sour orange trees, CO2 did not significantly affect specific gravity of sour orange trees. Exposure to CO2 did not significantly affect MOE of sour orange trees. Exposure to CO2 did, however, seem to influence microfibril angle development. Minor interactions between CO2 and cardinal direction affected the MOE and were caused by experimental difference in chamber construction.

Author : Anonim
Publisher : Unknown
Page : 150 pages
File Size : 55,9 Mb
Release : 2006
Category : Electronic
ISBN : UCBK:C083227782

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Research Note FPL. by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 226 pages
File Size : 41,8 Mb
Release : 1986
Category : Forest products
ISBN : UCBK:C083258117

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Research Paper FPL-RP by Anonim Pdf

Author : Kenji Omasa,Isamu Nouchi,Luit J. De Kok
Publisher : Springer Science & Business Media
Page : 294 pages
File Size : 41,9 Mb
Release : 2007-02-26
Category : Science
ISBN : 9784431310143

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Plant Responses to Air Pollution and Global Change by Kenji Omasa,Isamu Nouchi,Luit J. De Kok Pdf

This book reviews current topics on plant metabolism of air pollutants and elevated CO2, responses of whole plants and plant ecosystems, genetics and molecular biology for functioning improvement, experimental ecosystems and climate change research, global carbon-cycle monitoring in plant ecosystems, and other important issues. The authors, conducting research in Europe, the United States, Australia, and East Asia, present a wealth of information on their work in the field.

Author : Malcolm C. Press,Julie D. Scholes,Martin G. Barker
Publisher : Cambridge University Press
Page : 510 pages
File Size : 44,7 Mb
Release : 2002-08
Category : Science
ISBN : 0521549299

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Physiological Plant Ecology by Malcolm C. Press,Julie D. Scholes,Martin G. Barker Pdf

The last decade has seen rapid and major advances in our understanding of the physiological ecology of plants. This volume reviews some of these advances and new challenges. The chapters cover five broad themes: resource acquisition and utilization; interactions between organisms; responses to global environmental changes; ecosystems; and integration and scaling. This book brings together an unrivalled collection of leading practitioners in the discipline from North America, Europe and Australia and adopts a broad approach, ranging from the molecular to the ecosystem level. It has proven a valuable tool for researchers and advanced students in the discipline.

Author : Anonim
Publisher : Unknown
Page : 1842 pages
File Size : 48,5 Mb
Release : 1990
Category : Agriculture
ISBN : PSU:000057553801

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Bibliography of Agriculture by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 2650 pages
File Size : 47,6 Mb
Release : 1992
Category : Agriculture
ISBN : UOM:39015055300415

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Biological & Agricultural Index by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 532 pages
File Size : 44,7 Mb
Release : 1995
Category : Agriculture
ISBN : UOM:39015035213142

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Bibliography of Agriculture with Subject Index by Anonim Pdf

Author : Carol A. Singer
Publisher : Unknown
Page : 70 pages
File Size : 49,9 Mb
Release : 1992
Category : Growth (Plants)
ISBN : UVA:X002187979

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Effects of Carbon Dioxide Enrichment on Plant Growth by Carol A. Singer Pdf

Author : Boyd R. Strain,Department O U. S. Department of Energy,Jennifer D. Cure
Publisher : Unknown
Page : 316 pages
File Size : 45,8 Mb
Release : 2005
Category : Science
ISBN : 1410222233

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Direct Effects of Increasing Carbon Dioxide on Vegetation by Boyd R. Strain,Department O U. S. Department of Energy,Jennifer D. Cure Pdf

Carbon dioxide (CO2) enhancement of plant growth is one important direct effect of rising atmospheric CO2. Through photosynthesis, plants produce food and fiber from light and carbon assimilated as CO2 and form the foundation of the Earth's life support system. Rising atmospheric CO2 is thus an essential input to the food-producing process, and effects of CO2 enrichment described in this document have far-reaching implications for agricultural and ecological productivity. Establishing an empirical foundation of plant response to more CO2 and developing the capability to predict crop and ecosystem responses to CO2 enrichment are research goals that have been pursued in the DOE-led program. This State-of-the-Art report on the direct effects of CO2 on vegetation summarizes the current state of knowledge; it identifies uncertainties and suggests where more research is needed to assure understanding and delineates data and modeling requirements for future predictions. Important progress has been made over the past 5 years since the plant science community urged that more attention be given to direct effects of CO2 enrichment. Enhanced plant growth and yield from more CO2 is now widely recognized in different scientific and public sectors as an important element of the CO2 problem. While there have been gains in knowledge about a few crop plants, considerable ignorance remains about responses of native species and ecosystems to CO2 enrichment. Only a few native species or ecosystem types have been investigated. Competition among species in relation to CO2-induced growth differences is essentially unknown. Many interactions involving CO2 enrichment and other physical and biological variables affecting plant growth have not been studied. Among the physiological processes directly affected by CO2 that are not well understood are those involving net transpiration and whole-plant water use, where CO2 reduces stomatal conductance but increases leaf size. Nutrient requirements to sustain increased photosynthesis and growth at enriched levels of CO2 are not understood. This State-of-the-Art volume examines some key responses and identifies research needed to resolve these and other key unknowns.

Author : Luo Yiqi,Harold A. Mooney
Publisher : Elsevier
Page : 434 pages
File Size : 44,5 Mb
Release : 1999-04-13
Category : Science
ISBN : 9780080500713

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Carbon Dioxide and Environmental Stress by Luo Yiqi,Harold A. Mooney Pdf

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 : Noel Streatfeild
Publisher : Persephone Books
Page : 0 pages
File Size : 54,7 Mb
Release : 2009
Category : Bereavement
ISBN : 1906462089

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Saplings by Noel Streatfeild Pdf

"First published in 1945 by Collins"--Copyright page.