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High Resolution Reconstruction Of Holocene Climate Variability And Environmental Changes In The North Pacific Using Bivalve Shells
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Book Synopsis High-resolution Reconstruction of Holocene Climate Variability and Environmental Changes in the North Pacific Using Bivalve Shells by : Nadine Hallmann
Download or read book High-resolution Reconstruction of Holocene Climate Variability and Environmental Changes in the North Pacific Using Bivalve Shells written by Nadine Hallmann and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis North Pacific Environment and Paleoclimate from the Late Pleistocene to Present by : Miriam Jones
Download or read book North Pacific Environment and Paleoclimate from the Late Pleistocene to Present written by Miriam Jones and published by Frontiers Media SA. This book was released on 2020-01-13 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: The vast area of the North Pacific, spanning ~55˚ longitude, represents a challenge for documenting and understanding the geologic history of ocean, atmosphere, and terrestrial environmental change. Nevertheless, its importance for many issues, including our fundamental understanding of ocean and atmospheric circulation patterns and teleconnections with natural modes of climate variability through time, has led to a steady rise in the numbers of study sites and proxy types. By bringing together a wide range of proxies and timescales that examine the impacts of paleoclimate on ecosystems, water, carbon, and humans, and interactions between marine and terrestrial processes, this Research Topic contributes to an improved understanding of the region’s significance at global, hemispheric, and regional scales.
Book Synopsis North Pacific Late Holocene Climate Variability and Atmospheric Composition by : Erich Christian Osterberg
Download or read book North Pacific Late Holocene Climate Variability and Atmospheric Composition written by Erich Christian Osterberg and published by . This book was released on 2007 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Holocene Climate Variability by : E. Jansen
Download or read book Holocene Climate Variability written by E. Jansen and published by Elsevier Science & Technology. This book was released on 2004 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides an update of results on the record of past ocean variability since the end of the ice age. This work gives an overview of many aspects of natural climate variability and give both scholars and students a means of keeping up to date on recent developments in the field.
Book Synopsis High-resolution Climate Reconstruction for the Holocene Based on Growth Chronologies of the Bivalve Arctica Islandica from the North Sea by : Valérie Murielle Epplé
Download or read book High-resolution Climate Reconstruction for the Holocene Based on Growth Chronologies of the Bivalve Arctica Islandica from the North Sea written by Valérie Murielle Epplé and published by . This book was released on 2004 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Northern North Atlantic by : Priska Schäfer
Download or read book The Northern North Atlantic written by Priska Schäfer and published by Springer Science & Business Media. This book was released on 2001-04-02 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: The northern North Atlantic is one of the regions most sensitive to past and present global changes. This book integrates the results of an interdisciplinary project studying the properties of the Greenland-Iceland-Norwegian Seas and the processes of pelagic and benthic particle formation, particle transport, and deposition in the deep-sea sediments. Ice-related and biogeochemical processes have been investigated to decipher the spatial and temporal variability of the production and fate of organic carbon in this region. Isotopic stratigraphy, microfossil assemblages and paleotemperatures are combined to reconstruct paleoceanographic conditions and to model past climatic changes in the Late Quaternary. The Greenland-Iceland-Norwegian Seas can now be considered one of the best studied subbasins of the world`s oceans.
Book Synopsis Late Holocene Climate Variability as Preserved in High-resolution Estuarine and Lacustrine Sediment Archives by : Jeremiah Bradford Hubeny
Download or read book Late Holocene Climate Variability as Preserved in High-resolution Estuarine and Lacustrine Sediment Archives written by Jeremiah Bradford Hubeny and published by . This book was released on 2006 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of Early Holocene Paleoprecipitation Record from Freshwater River Mussel Shell at the Cooper's Ferry Site, Idaho and Their Archaeological Implications by : Alejandra P. Jimenez
Download or read book A Study of Early Holocene Paleoprecipitation Record from Freshwater River Mussel Shell at the Cooper's Ferry Site, Idaho and Their Archaeological Implications written by Alejandra P. Jimenez and published by . This book was released on 2015 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of [delta]18O held in freshwater bivalve shell carbonate are useful for reconstructing paleoclimates and environmental changes and inform interpretations about past human behavior and periods of culture change. Stable isotope analyses ([delta]18O) of Margaritifera falcata shells found at the Cooper's Ferry archaeological site located in the lower Salmon River canyon of Idaho were used to determine paleoclimate conditions during the early Holocene. In a previous study, a limited number of mussel shell [delta]18O values suggested early Holocene climates were generally moister. This thesis presents a higher-resolution isotope record that reveals far greater variation and extremes in precipitation values from 9,000 to 8,000 RYBP. By comparing prehistoric mussel shell isotope data to isotope records from modern shell and modern rainfall records this study provides a baseline against which prehistoric paleoprecipitation conditions can be evaluated. By examining the patterns in which archaeological shell [delta]18O reflects variability in regional climate conditions, human-environmental interactions can then be considered in order to make predictions about foraging behaviors.
Author :Geological Society of London Publisher :Geological Society of London ISBN 13 :9781862390546 Total Pages :340 pages Book Rating :4.3/5 (95 download)
Book Synopsis Holocene Land-ocean Interaction and Environmental Change Around the North Sea by : Geological Society of London
Download or read book Holocene Land-ocean Interaction and Environmental Change Around the North Sea written by Geological Society of London and published by Geological Society of London. This book was released on 2000 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Coralline Algae: Past, Present, and Future Perspectives by : Laurie Carol Hofmann
Download or read book Coralline Algae: Past, Present, and Future Perspectives written by Laurie Carol Hofmann and published by Frontiers Media SA. This book was released on 2022-12-28 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Quasi-Continuous Reconstruction of Central Tropical Pacific Climate Variability Throughout the Mid-to Late Holocene Inferred from Line Island Fossil Corals by : Niko Westphal
Download or read book A Quasi-Continuous Reconstruction of Central Tropical Pacific Climate Variability Throughout the Mid-to Late Holocene Inferred from Line Island Fossil Corals written by Niko Westphal and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Climate Changes in the Holocene: by : Eustathios Chiotis
Download or read book Climate Changes in the Holocene: written by Eustathios Chiotis and published by CRC Press. This book was released on 2018-11-15 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights climate as a complex physical, chemical, biological, and geological system, in perpetual change, under astronomical, predominantly, solar control. It has been shaped to some degree through the past glaciation cycles repeated in the last three million years. The Holocene, the current interglacial epoch which started ca. 11,700 years ago, marks the transition from the Stone Age to the unprecedented cultural evolution of our civilization. Significant climate changes have been recorded in natural archives during the Holocene, including the rapid waning of ice sheets, millennial shifting of the monsoonal fringe in the northern hemisphere, and abrupt centennial events. A typical case of severe environmental change is the greening of Sahara in the Early Holocene and the gradual desertification again since the fifth millennium before present. Climate Changes in the Holocene: Impact, Adaptation, and Resilience investigates the impact of natural climate changes on humans and civilization through case studies from various places, periods, and climates. Earth and human society are approached as a complex system, thereby emphasizing the necessity to improve adaptive capacity in view of the anthropogenic global warming and ecosystem degradation. Features: Written by distinguished experts, the book presents the fundamentals of the climate system, the unparalleled progress achieved in the last decade in the fields of intensified research for improved understanding of the carbon cycle, climate components, and their interaction. Presents the application of paleoclimatology and modeling in climate reconstruction. Examines the new era of satellite-based climate monitoring and the prospects of reduced carbon dioxide emissions.
Book Synopsis Reconstruction of Holocene Climate Change Using Image Analysis of Laminated Sediments by :
Download or read book Reconstruction of Holocene Climate Change Using Image Analysis of Laminated Sediments written by and published by . This book was released on 2004 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shifts in North Pacific Ecosystems and Their Relationships to Regional Climate Variability by : Sarah Jane King
Download or read book Shifts in North Pacific Ecosystems and Their Relationships to Regional Climate Variability written by Sarah Jane King and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Holocene Stratigraphy and Paleoenvironmental Change of Pamlico Sound, North Carolina, USA. by : Nicholas Zaremba
Download or read book Holocene Stratigraphy and Paleoenvironmental Change of Pamlico Sound, North Carolina, USA. written by Nicholas Zaremba and published by . This book was released on 2014 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Holocene Stratigraphy and Paleoenvironmental Change of Pamlico Sound, North Carolina, USA by Nicholas Zaremba September, 2014 Directors of Thesis: David Mallinson and Eduardo Leorri Major Department: Geological Sciences. Understanding how coastal systems respond to changes in climate is becoming more important due to the current increased rate of sea-level rise and possible increased hurricane intensity in the future. While coastal ecosystems represent only 10% of Earth's surface, more than 20% of the world's population resides within 100 km of the coastline and within 100 m of sea level, which highlights the need to understand the past effects of sea-level rise and climate change on barrier island systems. In North Carolina, USA the barrier island system in the northern portion of the state (the Outer Banks) extends for ca. 270 km of the state's coast and provides a dynamic boundary between the ocean and two large estuarine water bodies, Albemarle and Pamlico Sound. This study expands upon previous work which identified two periods of increased marine influence within Pamlico Sound interpreted to be the result of extensive barrier island segmentation synchronous with periods of rapid climate change (RCC) during the late Holocene. Approximately 470 km of high resolution geophysical data, 850 bulk sediment magnetic susceptibility sediment samples and ca. 600 sediment analyses were constrained by 108 radiocarbon age estimates derived from 52 vibracores to better understand the Holocene stratigraphy of Pamlico Sound and how the periods of RCC affected the stratigraphic architecture of the Sound. According to previous work, estuarine waters prevailed within the paleovalleys of Pamlico Sound as early as ca. 7500 cal BP and Pleistocene interfluves provided protection for the paleovalleys from the Atlantic Ocean until ca. 5500 cal BP, when the interfluves were flooded by rising sea-level, this interpretation is based on a conservative sea-level rise. However, the data provided in this study indicates that there is no evidence of a change in depositional environment at ca. 5500 cal BP. If the 5500 cal BP flooding of the Pleistocene interfluves is accurate, then Holocene barrier islands must have been present to explain the presence of estuarine deposits within the paleovalleys. At ca. 4000 cal BP, an increase in marine influence and sand content is detected in multiple cores within the northern basin and is interpreted to be the result of increased segmentation of barrier islands. This deposit is mainly recorded within the paleovalleys of Pamlico Sound; and is only preserved on a few interfluves as a result of base level being too low. Reformation of the barrier islands occurred sometime from 3500 to 2500 cal BP; suggested by muddy deposits with low brackish estuarine foraminiferal assemblages. At ca. 1200 cal BP, a sudden increase in marine influence is detected throughout southeastern Pamlico Sound; a sandy deposit is interpreted to be the result of extensive segmentation of the barrier islands during the Medieval Climate Anomaly (MCA). Geophysical data suggests the segmentation of the barriers was large in magnitude to allow for deposition of large lobate shoals (the MCA shoals). Further refinement of a local sea-level curve is required to understand the mechanisms responsible for the 4000 cal BP marine influenced deposit. The error range of the North Carolina sea-level curve loosely constrain the initial flooding of the Pleistocene interfluves anytime from 5500 to 4000 cal BP rather than before 7000 cal BP as previously postulated. Therefore, it is difficult to hypothesize about the mechanism responsible for the 4000 cal BP sandy deposit without a more refined local sea level curve. However, data from this study combined with other research suggest that the 1200 cal BP deposit was likely caused by an increase in hurricane activity or intensity during the MCA. Furthermore this study has provided an estimate on the volume (1.1x109 km3) of silt and clay deposited within the northern basin of Pamlico Sound since ca. 4000 cal BP; this has aided in creating a carbon sequestration budget for the system.
Book Synopsis Goods and Services of Marine Bivalves by : Aad C. Smaal
Download or read book Goods and Services of Marine Bivalves written by Aad C. Smaal and published by Springer. This book was released on 2018-11-26 with total page 591 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this open access book is to review and analyse the goods and services of bivalve shellfish. How they are defined, what determines the ecological functions that are the basis for the goods and services, what controversies in the use of goods and services exist, and what is needed for sustainable exploitation of bivalves from the perspective of the various stakeholders. The book is focused on the goods and services, and not on impacts of shellfish aquaculture on the benthic environment, or on threats like biotoxins; neither is it a shellfish culture handbook although it can be used in evaluating shellfish culture. The reviews and analysis are based on case studies that exemplify the concept, and show the strengths and weaknesses of the current applications. The multi-authored reviews cover ecological, economic and social aspects of bivalve goods and services. The book provides new insights for scientists, students, shellfish producers, policy advisors, nature conservationists and decision makers. This book is open access under the CC BY license.
Book Synopsis Seasonality Across the Cretaceous-paleogene Boundary by : Rachel C. Mohr
Download or read book Seasonality Across the Cretaceous-paleogene Boundary written by Rachel C. Mohr and published by . This book was released on 2018 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-resolution ontogenetic stable isotope (Îþ18O and Îþ13C) analysis of accretionary carbonate bivalve shells can provide subannual records of their environments. These records present an opportunity to better understand the seasonal variation of past climates and environments. Characterizing the seasonality of past environments is especially helpful in resolving subtle changes during intervals of climate change or environmental perturbations such as during extinction events. Late Cretaceous and early Paleogene bivalve shells of Lahillia larseni from Seymour Island, Antarctica, were isotopically sampled at a high ontogenetic resolution in order to characterize the seasonality of this unstable environment for a period of ~1.3 Myr across the Cretaceous-Paleogene (K-Pg) extinction interval. Ontogenetic ÎþB18O profiles support an austral spring or summer season of growth for L. larseni, with the magnitude of seasonal temperature variation experienced during the growing season ranging from 1.6 ℗ł 0.3℗ʻC to 9.5 ℗ł 0.5℗ʻC (1Ï3). The ontogenetic Îþ13C profiles record isotopic variations in the bottom water dissolved inorganic carbon (DIC) reservoir resulting from the seasonal activity of primary producers. Interannual variations in the primary productivity signal are interpreted as possible evidence for a second bloom of productivity in late summer in years with an additional flux of nutrients, and for the delayed onset of primary productivity in years with winter sea ice. Abnormally low Îþ13C values in ontogenetic carbon isotope profiles with large seasonal variation provide evidence for the seasonal cycling of biogenic methane production and oxidation occurring during a ~180 kyr interval across the K-Pg boundary. Stratigraphic trends reveal a sudden 6.8 ℗ł 1.3℗ʻC (1Ï3) warming event across the K-Pg boundary, with a duration of ~100 kyr, similar to previous estimates of warming across the K-Pg. This study, which presents the highest resolution ontogenetic sampling of L. larseni shells, provides new insights into the seasonality of an unstable paleoenvironment with no modern analogue, and highlights the potential for changes in subannual variability to destabilize an environment during an interval of extinction.
