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Oxygen Isotope Ratios Of Biogenic Phosphate As Indicators Of Change In Continental Climate Variables At Different Time Scales
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Book Synopsis Oxygen Isotope Ratios of Biogenic Phosphate as Indicators of Change in Continental Climate Variables at Different Time Scales by : Henry C. Fricke
Download or read book Oxygen Isotope Ratios of Biogenic Phosphate as Indicators of Change in Continental Climate Variables at Different Time Scales written by Henry C. Fricke and published by . This book was released on 1997 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1997 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oxygen Isotopes of Inorganic Phosphate in Environmental Samples by : Joseph Adu-Gyamfi
Download or read book Oxygen Isotopes of Inorganic Phosphate in Environmental Samples written by Joseph Adu-Gyamfi and published by Springer Nature. This book was released on 2022 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book distinguished itself from other publications by offering step-by-step instructions on how to extract, purify, provide modifications, and major issues to be encountered during the process. For the 18OP method to progress, further fundamental research as well as field and laboratory studies need to be conducted for a better understanding of P cycling in the environment. Chapter 1 outlines the background and examples of 18Op studies in sediments, soils, fresh water, mineral fertilizers, and plants. Chapters 2 and 3 examine the stepwise extraction and purification protocols including reagents, equipment and consumables and preparations for analyses. Chapter 4 examines some of the challenges and modifications during the purification process. Chapter 5 discusses planning and designing of a study using 18Op, external quality assurance with an example of an inter-laboratory study. Chapter 6 outlines the conclusions, future trends, and opportunities, the scaling out of the method from laboratory to field studies. It is expected that the 18OP would be extensively applied in research geared to understand phosphorus dynamics in different agro-environments. .
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1998 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Diagenesis on Oxygen Isotope Ratios of Biogenic Phosphates by : Z.D. Sharp
Download or read book The Effect of Diagenesis on Oxygen Isotope Ratios of Biogenic Phosphates written by Z.D. Sharp and published by . This book was released on 2000 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oxygen Isotope Analysis of Biogenic Phosphate by : Logan Hackett
Download or read book Oxygen Isotope Analysis of Biogenic Phosphate written by Logan Hackett and published by . This book was released on 2005 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oxygen Isotopic Composition of Biogenic Phosphate and the Temperature of Early Ordovician Seawater by : Damon Bassett
Download or read book Oxygen Isotopic Composition of Biogenic Phosphate and the Temperature of Early Ordovician Seawater written by Damon Bassett and published by . This book was released on 2003 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oxygen Isotope Analysis of Biogenic Phosphate in Mammalian Bone and Teeth by : Grimes, V
Download or read book Oxygen Isotope Analysis of Biogenic Phosphate in Mammalian Bone and Teeth written by Grimes, V and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Hilary Le Quesne Stuart-Williams Publisher :National Library of Canada = Bibliothèque nationale du Canada ISBN 13 :9780612136830 Total Pages :170 pages Book Rating :4.1/5 (368 download)
Book Synopsis Analysis of the Variation of the Oxygen Isotopic Composition of Mammalian Bone Phosphate [microform] by : Hilary Le Quesne Stuart-Williams
Download or read book Analysis of the Variation of the Oxygen Isotopic Composition of Mammalian Bone Phosphate [microform] written by Hilary Le Quesne Stuart-Williams and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1996 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Understanding Earth's Deep Past by : National Research Council
Download or read book Understanding Earth's Deep Past written by National Research Council and published by National Academies Press. This book was released on 2011-08-02 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is little dispute within the scientific community that humans are changing Earth's climate on a decadal to century time-scale. By the end of this century, without a reduction in emissions, atmospheric CO2 is projected to increase to levels that Earth has not experienced for more than 30 million years. As greenhouse gas emissions propel Earth toward a warmer climate state, an improved understanding of climate dynamics in warm environments is needed to inform public policy decisions. In Understanding Earth's Deep Past, the National Research Council reports that rocks and sediments that are millions of years old hold clues to how the Earth's future climate would respond in an environment with high levels of atmospheric greenhouse gases. Understanding Earth's Deep Past provides an assessment of both the demonstrated and underdeveloped potential of the deep-time geologic record to inform us about the dynamics of the global climate system. The report describes past climate changes, and discusses potential impacts of high levels of atmospheric greenhouse gases on regional climates, water resources, marine and terrestrial ecosystems, and the cycling of life-sustaining elements. While revealing gaps in scientific knowledge of past climate states, the report highlights a range of high priority research issues with potential for major advances in the scientific understanding of climate processes. This proposed integrated, deep-time climate research program would study how climate responded over Earth's different climate states, examine how climate responds to increased atmospheric carbon dioxide and other greenhouse gases, and clarify the processes that lead to anomalously warm polar and tropical regions and the impact on marine and terrestrial life. In addition to outlining a research agenda, Understanding Earth's Deep Past proposes an implementation strategy that will be an invaluable resource to decision-makers in the field, as well as the research community, advocacy organizations, government agencies, and college professors and students.
Book Synopsis The Oxygen Isotope Composition of Dissolved Inorganic Phosphate and the Marine Phosphorus Cycle by : Albert Smith Colman
Download or read book The Oxygen Isotope Composition of Dissolved Inorganic Phosphate and the Marine Phosphorus Cycle written by Albert Smith Colman and published by . This book was released on 2002 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phosphate-oxygen Isotope Ratios as a Tracer for Sources and Cycling Phosphorus in the Illinois River Watershed by : Brian Keenan Breaker
Download or read book Phosphate-oxygen Isotope Ratios as a Tracer for Sources and Cycling Phosphorus in the Illinois River Watershed written by Brian Keenan Breaker and published by . This book was released on 2009 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oxygen Isotopic Deermination of Climate in the Sangamon Using Phosphate from Turtle Shell and Gar Scales by : Zachary Kita
Download or read book Oxygen Isotopic Deermination of Climate in the Sangamon Using Phosphate from Turtle Shell and Gar Scales written by Zachary Kita and published by . This book was released on 2009 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Stable Isotope Analytical Techniques by : Pier A. de Groot
Download or read book Handbook of Stable Isotope Analytical Techniques written by Pier A. de Groot and published by Elsevier. This book was released on 2004-10-27 with total page 1265 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Parent with price) Volume I contains subjective reviews, specialized and novel technique descriptions by guest authors. Part 1 includes contributions on purely analytical techniques and Part 2 includes matters such as development of mass spectrometers, stability of ion sources, standards and calibration, correction procedures and experimental methods to obtain isotopic fractionation factors.Volume II will be available in 2005.
Book Synopsis Encyclopedia of Geoarchaeology by : Allan S. Gilbert
Download or read book Encyclopedia of Geoarchaeology written by Allan S. Gilbert and published by Springer. This book was released on 2016-08-15 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geoarchaeology is the archaeological subfield that focuses on archaeological information retrieval and problem solving utilizing the methods of geological investigation. Archaeological recovery and analysis are already geoarchaeological in the most fundamental sense because buried remains are contained within and removed from an essentially geological context. Yet geoarchaeological research goes beyond this simple relationship and attempts to build collaborative links between specialists in archaeology and the earth sciences to produce new knowledge about past human behavior using the technical information and methods of the geosciences. The principal goals of geoarchaeology lie in understanding the relationships between humans and their environment. These goals include (1) how cultures adjust to their ecosystem through time, (2) what earth science factors were related to the evolutionary emergence of humankind, and (3) which methodological tools involving analysis of sediments and landforms, documentation and explanation of change in buried materials, and measurement of time will allow access to new aspects of the past. This encyclopedia defines terms, introduces problems, describes techniques, and discusses theory and strategy, all in a format designed to make specialized details accessible to the public as well as practitioners. It covers subjects in environmental archaeology, dating, materials analysis, and paleoecology, all of which represent different sources of specialist knowledge that must be shared in order to reconstruct, analyze, and explain the record of the human past. It will not specifically cover sites, civilizations, and ancient cultures, etc., that are better described in other encyclopedias of world archaeology. The Editor Allan S. Gilbert is Professor of Anthropology at Fordham University in the Bronx, New York. He holds a B.A. from Rutgers University, and his M.A., M.Phil., and Ph.D. were earned at Columbia University. His areas of research interest include the Near East (late prehistory and early historic periods) as well as the Middle Atlantic region of the U.S. (historical archaeology). His specializations are in archaeozoology of the Near East and geoarchaeology, especially mineralogy and compositional analysis of pottery and building materials. Publications have covered a range of subjects, including ancient pastoralism, faunal quantification, skeletal microanatomy, brick geochemistry, and two co-edited volumes on the marine geology and geoarchaeology of the Black Sea basin.
Book Synopsis Determining the Biological Turnover Rate of Phosphate in Agricultural Soils Using Stable Oxygen Isotopes by : Margaret R. Duffy
Download or read book Determining the Biological Turnover Rate of Phosphate in Agricultural Soils Using Stable Oxygen Isotopes written by Margaret R. Duffy and published by . This book was released on 2020 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agricultural fields in Northwest Ohio and the Maumee River watershed are frequently tile drained and fertilized with phosphate to optimize plant growth. Phosphate is often lost from fields via surface runoff and tile drainage, either with particulate soil matter or as dissolved reactive phosphate. Soil health, aided by enzymes produced by microorganisms and plants, can influence the retention and loss of phosphate. Stable oxygen isotopes may provide a non-invasive way of measuring the biological turnover rate of phosphate in soils over longer time scales than previous methods. The ability of oxygen isotopes in phosphate to measure biological turnover was examined in a study with three fields in the Maumee River watershed from fall 2016-summer 2017. Samples were collected after fall tilling and fertilization, and before and after spring planting and fertilization. Soil nutrients and metal concentrations were analyzed as well as oxygen isotope analysis from soil phosphate, soil pore-water, and tile water. Overall, sites had high nutrient and metal concentrations and low levels of phosphate recycling relative to the overall pool of phosphate, based on oxygen isotope analysis. Soil samples did not reach equilibrium with soil pore-water. The most recycled sample collected, a tile drain sample collected five months after fall fertilization, was still about 80% fertilizer. The results suggest that sources of phosphate can be detected for long periods of time in agricultural fields under specific circumstances and that phosphate ion interactions with metal oxides may help explain the lack of equilibrium observed. Oxygen isotope studies of phosphate in soil could help researchers and field managers better understand the mechanisms behind the effects of various best management practices (BMPs) on nutrient runoff.
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