Download or read book Biological Availability of Amino Acids in Marine Sediments written by Terry Brice McDaniel and published by . This book was released on 1989 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Amino Acid Analysis of Marine Sediments Hauraki Gulf New Zealand written by and published by . This book was released on 2008 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amino acid compositions, bulk organic carbon, total nitrogen, and total organic matter were measured for eight sediment samples from the Hauraki Gulf, New Zealand, in order to assess the source and fate of organic matter in a shallow marine environment. Samples were collected from near-shore and off-shore shore sites, as well as from a site receiving freshwater input from multiple rivers. A comparison of carbon, nitrogen, and amino acid compositions of samples between 1 cm depth (Uhle 2004) and 5 cm depth was used to assess changes in organic matter composition through time. Amino acid analyses in particular should be effective in deciphering organic decomposition through both the presence and abundance of amino acids. C:N values, which range from 6.5-9.3, are typical for marine sediments and indicate that the primary source for organic matter is marine despite potential terrigenous input from the surrounding environment. This interpretation is supported by carbon isotopes ( -20%0 and -22%0 for most sites) which is typical for marine-derived organic materials. C:N ratios do not appreciably vary from 1-5 cm depth, suggesting that there has not been significant depletion of organic matter in these young deposits. Furthermore, both D- and L-amino acids are present at 5 cm depth, supporting minimal organic matter decomposition. However, concentrations of amino acid decreases with depth, and the presence of D-alanine, D-aspartic acid, D-glutamic acid, glycine, and non-protein amino acids, at 5 cm depth, suggests at least a small contribution to the organic carbon source from bacteria. A decrease in [delta]15N with depth further suggests the possibility of bacterial reworking under anoxic conditions. Combined, these results support hypotheses of microbial reworking of organic matter through time, but are not clearly diagnostic of this process.
Download or read book The Ecology of Amino Acids in the Active Surface Layer of Marine Sediments written by Christian Vye and published by . This book was released on 1982 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological and Geochemical Implications of Amino Acids in Sea Water Wood and Charcoal written by Cynthia Laura Lee and published by . This book was released on 1975 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biogeochemistry of Dissolved Free Amino Acids in Marine Sediments written by Susan Margaret Henrichs and published by . This book was released on 1980 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dissolved free amino acids (DFAA) were measured in interstitial water samples squeezed from sediments collected in a variety of depositional environments. These sediments were further characterized by measurements of total organic carbon, total nitrogen, dissolved organic carbon, total hydrolyzable amino acids, and pore water-dissolved remineralization products.
Download or read book Amino Acids in Interstitial Waters of Marine Sediments written by Susan Margaret Henrichs and published by . This book was released on 1979 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Amino Acids and Proteins in Fossil Biominerals written by Beatrice Demarchi and published by John Wiley & Sons. This book was released on 2020-06-12 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: AMINO ACIDS AND PROTEINS IN FOSSIL BIOMINERALS An essential cross-disciplinary guide to the proteins that form biominerals and that are preserved in the fossil record?? Amino Acids and Proteins in Fossil Biominerals is an authoritative guide to the patterns of survival and degradation of ancient biomolecules in the fossil record. The author brings together new research in biomineralization and ancient proteins to describe mechanisms of protein diagenesis. The book draws on the author's experiences as well as current information from three research fields: geochemistry, archaeology and Quaternary sciences. The author examines the history of the study of ancient proteins, from the dating of Quaternary biominerals to the present advances in shotgun proteomics, and discusses their applications across archaeology, geology and evolutionary biology. This important guide:?? Explores the main components of biominerals Describes the breakdown of proteins in fossils Reviews the applications of ancient protein studies Written for students and researchers of biomolecular archaeology and palaeontology, Amino Acids and Proteins in Fossil Biominerals provides a cross-disciplinary guide to the proteins responsible for the formation of biominerals and to the survival of biomolecules in the archaeological and palaeontological record. This book forms one volume of the popular New Analytical Methods in Earth and Environmental Science Series.
Download or read book Biogeochemical Study of Aliphatic Amines and Amino Acids in Coastal Marine Sediments written by Xu-Chen Wang and published by . This book was released on 1993 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biogeochemistry of Amino Acids written by Peter Edgar Hare and published by John Wiley & Sons. This book was released on 1980-05-13 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents papers read at a conference held at Airlie House, Warenton, Virginia, October 29 to November 1, 1978 on ``Advances in the Biogeochemistry of Amino Acids.'' Offers the concepts, techniques, and results of most of the active participants in this area of research. The papers are representative of the major areas in which amino acid biogeochemistry is being developed, but they also point to new areas of future research. Provides numerous instances of amino acid biogeochemistry as an interdisciplinary science by including the thoughts of scientists from backgrounds as diverse as geology, archeology, paleontology, and geochemistry.
Download or read book Amino Acids in Interstitial Waters of Marine Sediments written by Susan Margaret Henrichs and published by . This book was released on 1981 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of the Processes Affecting Dissolved Free Amino Acids in Anoxic Marine Sediments written by David Jay Burdige and published by . This book was released on 1986 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Early diagenesis of amino acids in marine sediments written by S. Montani and published by . This book was released on 1983 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biogeochemistry of Dissolved Free Amino Acids in Marine Sediments written by and published by . This book was released on 1908 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Financial support was provided by the Woods Hole Oceanographic Institution Education Office, the Paul M. Fye Fellowship, ONR Contract N00014-79-C-0071, and NSF Grant No. OCE 79-08665. Travel funds to Peru were provided by NSF Grant No. OCE 77-26180.
Download or read book Organic Matter written by Jean K. Whelan and published by Columbia University Press. This book was released on 1992-12-10 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sediments from the world's ocean floors and other water body basins hold a wealth of information about organic life as we know it. Organic Matter: Productivity, Accumulation, and Preservation in Recent and Ancient Sediments addresses focusing on the production, accumulation, and preservation of organic matter in marine and lacustrine sediments. Contributors to this important monograph cover a range of geologic ages from recent times back to the Permian Era, as well as temperature and organic matter types. This resource book will be of interest and benefit to petroleum explorationists and researchers, as well as oceanographers, marine and environmental scientists, sedimentologists, geochemists and paleontologists.
Download or read book Organic Geochemistry written by Geoffrey Eglinton and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt: For many years, the subject matter encompassed by the title of this book was largely limited to those who were interested in the two most economically important organic materials found buried in the Earth, namely, coal and petroleum. The point of view of any discussions which might occur, either in scientific meetings or in books that have been written, was, therefore, dominated largely by these interests. A great change has occurred in the last decade. This change had as its prime mover our growing knowledge of the molecular architecture of biological systems which, in turn, gave rise to a more legitimate asking of the question: "How did life come to be on the surface of the Earth?" A second motivation arose when the possibilities for the exploration of planets other than the Earth-the moon, Mars, and other parts of the solar system-became a reality. Thus the question of the possible existence of life elsewhere than on Earth conceivably could be answered.
Download or read book Starvation in Bacteria written by S. Kjelleberg and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concerted efforts to study starvation and survival of nondifferentiating vegeta tive heterotrophic bacteria have been made with various degrees of intensity, in different bacteria and contexts, over more than the last 30 years. As with bacterial growth in natural ecosystem conditions, these research efforts have been intermittent, with rather long periods of limited or no production in between. While several important and well-received reviews and proceedings on the topic of this monograph have been published during the last three to four decades, the last few years have seen a marked increase in reviews on starvation survival in non-spore-forming bacteria. This increase reflects a realization that the biology of bacteria in natural conditions is generally not that of logarithmic growth and that we have very limited information on the physiology of the energy-and nutrient-limited phases of the life cyde of the bacterial cello The growing interest in nongrowing bacteria also sterns from the more recent advances on the molecular basis of the starvation-induced nongrowing bacterial cello The identification of starvation-specific gene and protein re sponders in Escherichia coli as weIl as other bacterial species has provided molecular handles for our attempts to decipher the "differentiation-like" responses and programs that nondifferentiating bacteria exhibit on nutrient limited growth arrest. Severallaboratories have contributed greatly to the progress made in life after-log research.
Download or read book Oceanography and Marine Biology written by Harold Barnes and published by CRC Press. This book was released on 2003-09-02 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:
