Testing The Reproducibility Of Observed Changes In Percent Caco3 Delta18o And Delta13c In Bulk Carbonate Across The Eocene Oligocene Climate Transition In Sediments From The Equatorial Pacific Ocean PDF Download

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Testing the Reproducibility of Observed Changes in Percent CaCo3, Delta18O and Delta13C in Bulk Carbonate Across the Eocene-Oligocene Climate Transition in Sediments from the Equatorial Pacific Ocean

Testing the Reproducibility of Observed Changes in Percent CaCo3, Delta18O and Delta13C in Bulk Carbonate Across the Eocene-Oligocene Climate Transition in Sediments from the Equatorial Pacific Ocean
Author: Sam Bradley
Publisher:
Total Pages: 71
Release: 2010
Genre:
ISBN:

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Global Changes in Paleoproductivity, Biological Export, and Deep Water Oxygenation Across the Eocene-Oligocene Transition

Global Changes in Paleoproductivity, Biological Export, and Deep Water Oxygenation Across the Eocene-Oligocene Transition
Author: Genevieve Elsworth
Publisher:
Total Pages:
Release: 2015
Genre:
ISBN:

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"The Eocene-Oligocene transition (EOT) (~33.7 Ma) delineates the most abrupt shift from "greenhouse" to "icehouse" climates during the Cenozoic. At this time, substantial global cooling and the emplacement of the Antarctic ice sheet accompanied perturbations to the carbon cycle. Profound climatic reorganization across the EOT is often attributed to a decline in atmospheric pCO2; however, the mechanism behind this decrease is poorly understood. Considering the importance of atmospheric pCO2 drawdown for the emplacement of the Antarctic ice sheet, a more complete understanding of the controlling processes are required. The present study presents new and existing data compiled from globally distributed Ocean Drilling Program (ODP) Sites 689 (Maud Rise, Atlantic Sector of Southern Ocean), 744 (Kerguelen Plateau, Indian Sector of Southern Ocean), 925 (Ceara Rise, Western Equatorial Atlantic Ocean), 1090 (Agulhas Ridge, Southeastern Atlantic Ocean), and 1218 (Eastern Equatorial Pacific Ocean). A multi-proxy approach is applied to provide indications of silica availability (biogenic opal MAR), calcium carbonate compensation depth (carbonate MAR), biological surface export (BaEX MAR), and deep water oxygenation (MnEF and UEF). Trends in biogenic opal and carbonate deposition across the EOT suggest the weathering of both silicates and carbonates to exert control on ocean biogeochemistry on geologic timescales. A pulse of biogenic opal deposition is consistent with accelerated silicate weathering both in Antarctica and globally, while enhanced weathering of exposed carbonate shelves accompanied a deepening of the calcium carbonate compensation depth (CCD) across the EOT. The enhanced weathering of silicates and carbonates has implications for the drawdown of atmospheric pCO2 across the transition and emphasize the important role played by coupled Earth system feedbacks on climatic and oceanic reorganizations from the late Eocene to the early Oligocene." --


A Study of Sediment

A Study of Sediment
Author: Walenty Jarocki
Publisher:
Total Pages: 262
Release: 1963
Genre: Sedimentation and deposition
ISBN:

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Origins and Evolution of Life

Origins and Evolution of Life
Author: Muriel Gargaud
Publisher: Cambridge University Press
Total Pages: 546
Release: 2011-01-06
Genre: Science
ISBN: 9780521761314

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Devoted to exploring questions about the origin and evolution of life in our Universe, this highly interdisciplinary book brings together a broad array of scientists. Thirty chapters assembled in eight major sections convey the knowledge accumulated and the richness of the debates generated by this challenging theme. The text explores the latest research on the conditions and processes that led to the emergence of life on Earth and, by extension, perhaps on other planetary bodies. Diverse sources of knowledge are integrated, from astronomical and geophysical data, to the role of water, the origin of minimal life properties and the oldest traces of biological activity on our planet. This text will not only appeal to graduate students but to the large body of scientists interested in the challenges presented by the origin of life, its evolution, and its possible existence beyond Earth.


Marine Mussels

Marine Mussels
Author: Elizabeth Gosling
Publisher: John Wiley & Sons
Total Pages: 892
Release: 2021-12-01
Genre: Technology & Engineering
ISBN: 1119293901

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A comprehensive volume providing broad and detailed coverage of marine mussels Marine Mussels: Ecology, Physiology, Genetics and Culture provides readers with in-depth, fully up-to-date information on all major aspects of marine mussels. Written by an internationally renowned expert in the field, this authoritative volume addresses morphology, ecology, ­feeding, phylogeny and evolution, reproduction and larval development, settlement and recruitment, genetics, disease, management of culture systems and more. The book encompasses many different species of marine mussels: genus Mytilus, other important commercial marine genera such as Perna, Aulacomya and Choromytilus, and non-commercial genera including Modiolus, Geukensia, Brachidontes and hydrothermal vent Bathymodiolus. Comprising twelve extensively cross-referenced chapters, the book discusses a diversity of integrated topics that range from fundamental physiology of marine mussels to new techniques being applied in their biology and ecology. Author Elizabeth Gosling reviews contemporary developments and issues in the field such as the use of DNA genetic markers in detecting and diagnosing different strains of pathogenic bacteria, the use of mussels as monitors of marine contaminants, sophisticated modelling techniques that simulate disease and forecast outbreaks, and the impacts of global warming, ocean acidification and hypoxia on marine mussels. Presenting an inclusive, highly detailed treatment of mussel biology, physiology, genetics, and culture, this invaluable resource: Contains thorough descriptions of external and internal anatomy, global and local distribution patterns, the impacts of mussels on marine ecosystems, and the processes of circulation, respiration, excretion and osmoregulation Reflects significant advances in mussel science and new areas of research in marine mussels Describes the fundamentals of mussel aquaculture, the types and levels of contaminants in the marine environment and new approaches for sustainable aquaculture development Discusses the application of genetic methods, population genetics, global breeding programmes and the emerging area of bivalve genomics Addresses the role of mussels in disease transmission to humans, including production and processing controls, regulation of monitoring and quality control Marine Mussels: Ecology, Physiology, Genetics and Culture is essential reading for biological scientists, researchers, instructors and advanced students in the fields of biology, ecology, aquaculture, environmental science, toxicology, genetics, pathology, taxonomy and public health.


Asian Marine Biology 7 (1990)

Asian Marine Biology 7 (1990)
Author: Brian Morton
Publisher: Hong Kong University Press
Total Pages: 368
Release: 1991-04-01
Genre: Science
ISBN: 9789622092730

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This is the annual journal of the Marine Biological Association of Hong Kong. It contains papers on marine subjects of interest to all Asian biologists.


New Perspectives on Evolution

New Perspectives on Evolution
Author: Leonard Warren
Publisher: Wiley-Liss
Total Pages: 280
Release: 1991-03-15
Genre: History
ISBN:

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The Wistar Symposium Series, Volume 4 New Perspectives on Evolution Proceedings of a multidisciplinary symposium designed to interrelate recent discoveries and new insights in the field of evolution held at the University of Pennsylvania, April 18 and 19, 1990 Sponsored by The Wistar Institute, Philadelphia, Pennsylvania Edited by Leonard Warren and Hilary Koprowski During the past two-and-a-half decades, astonishing advances have been made in our knowledge and understanding of evolution. New Perspectives on Evolution reflects these developments in a broad-ranging work. Rather than selecting one or a few aspects of evolution for discussion, the book offers a panoramic view of the field. Within this comprehensive format, it spotlights the spectacular contributions of molecular biology, virology, immunology, and protein and nucleic acid chemistry. The book displays how progress in these fields has greatly advanced our understanding of the evolutionary process. New Perspectives on Evolution offers authoritative contributions from an illustrious group of experts. The book opens with an historical perspective of the field written by one of the great formulators of our present notions about evolution. Then, contributors explain how the giant strides made in molecular approaches to gene and DNA technology permit the study of interspecies relationships. The power of these approaches could never have been imagined by Darwin. With its inclusive view and insightful information on progress in evolutionary knowledge and theory, New Perspectives on Evolution will particularly interest and enlighten cellular, molecular, and developmental biologists, as well as geneticists, zoologists, sociologists, and ecologists. In general, this provocative work will interest all investigators in the biological sciences.


Environments and Extinctions

Environments and Extinctions
Author: Jim I. Mead
Publisher:
Total Pages: 230
Release: 1985
Genre: America
ISBN:

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10 papers using new conceptual frameworks to interpret late Quaternary cultural and environmental remains. Chapters are composed largely of the proceedings of a symposium held at the Society for American Archaeology meetings in 1982.


Trapped Beneath the Ice

Trapped Beneath the Ice
Author: Mary Wicks
Publisher:
Total Pages: 24
Release: 2011
Genre: Whales
ISBN: 9781921642944

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Crossbeak, Bonnet and Bone, a family of three Grey Whales, are trapped beneath the ice with no means of escape. In order to survive they must have air and they can find no breaks in the ice through which they can breathe. Bone cannot hold his breath as long as his parents and is rapidly becoming weaker and more frightened. As panic begins to set in they discover two small holes in the ice and are just able to reach them and gulp down the life giving air. Can they find their way to the open sea? Will Bone be strong enough to survive? Help comes from an unexpected source. But will it be enough to save them?


Freshwater Ecology and Conservation

Freshwater Ecology and Conservation
Author: Jocelyne Hughes
Publisher: Techniques in Ecology & Conservation
Total Pages: 0
Release: 2019
Genre: Biotic communities
ISBN: 9780198766421

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This practical manual of freshwater ecology and conservation provides a state-of-the-art review of the approaches and techniques used to measure, monitor, and conserve freshwater ecosystems. It offers a single, comprehensive, and accessible synthesis of the vast amount of literature for freshwater ecology and conservation that is currently dispersed in manuals, toolkits, journals, handbooks, 'grey' literature, and websites. Successful conservation outcomes are ultimately built on a sound ecological framework in which every species must be assessed and understood at the individual, community, catchment and landscape level of interaction. For example, freshwater ecologists need to understand hydrochemical storages and fluxes, the physical systems influencing freshwaters at the catchment and landscape scale, and the spatial and temporal processes that maintain species assemblages and their dynamics. A thorough understanding of all these varied processes, and the techniques for studying them, is essential for the effective conservation and management of freshwater ecosystems.