Download or read book Dinoflagellate Studies Dinoflagellate cysts and thecae written by William R. Evitt and published by . This book was released on 1964 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stratigraphy Timescales written by and published by Academic Press. This book was released on 2016-11-22 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stratigraphy and Timescales covers current research across a wide range of stratigraphic disciplines, providing information on recent developments for the geoscientific research community. This fully commissioned review publication aims to foster and convey progress in stratigraphy, including geochronology, magnetostratigraphy, lithostratigraphy, event-stratigraphy, isotope stratigraphy, astrochronology, climatostratigraphy, seismic stratigraphy, biostratigraphy, ice core chronology, cyclostratigraphy, palaeoceanography, sequence stratigraphy, and more. - Contains contributions from leading authorities in the field - Informs and updates on all the latest developments in the field - Aims to foster and convey progress in stratigraphy, including geochronology, magnetostratigraphy, lithostratigraphy, event-stratigraphy, and more
Download or read book Dinoflagellate Studies Theca and cyst of recent fresh water peridinium limbatum stokes lemmermann written by William R. Evitt and published by . This book was released on 1964 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fossil and Living Dinoflagellates written by W. A. S. Sarjeant and published by Elsevier. This book was released on 2013-09-17 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fossil and Living Dinoflagellates presents a detailed account of the cell physiology, morphology, and mode of life of dinoflagellates. This book discusses the development in the research, both on fossil and living dinoflagellates. Organized into nine chapters, this book begins with an overview of dinoflagellates as the most important producers of luminescence in the oceans, which sometimes cause tropical seas to glow with phosphorescent light. This text then examines the characteristic feature of dinoflagellates to possess two flagella. Other chapters consider the sequence of events during reproduction in the armored dinoflagellate Glenodinium foliaceum based on culture. This book discusses as well the encystment in non-marine dinoflagellates, which occurs in response to the oncoming of adverse environmental conditions. The final chapter deals with the distribution pattern of dinoflagellate cysts in fossil sediments. This book is a valuable resource for marine biologists, zoologist, paleontologists, micropaleontologists, geologists, taxonomists, microscopists, geneticists, and research workers.
Download or read book Encyclopedia of Paleoclimatology and Ancient Environments written by Vivien Gornitz and published by Springer Science & Business Media. This book was released on 2008-10-31 with total page 1062 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of Springer’s Major Reference Works, this book gives the reader a truly global perspective. It is the first major reference work in its field. Paleoclimate topics covered in the encyclopedia give the reader the capability to place the observations of recent global warming in the context of longer-term natural climate fluctuations. Significant elements of the encyclopedia include recent developments in paleoclimate modeling, paleo-ocean circulation, as well as the influence of geological processes and biological feedbacks on global climate change. The encyclopedia gives the reader an entry point into the literature on these and many other groundbreaking topics.
Download or read book Palynology in Oil Exploration written by Aureal T. Cross and published by . This book was released on 1964 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dinoflagellate Studies written by William R. Evitt and published by . This book was released on 1967 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applications of Paleoenvironmental Techniques in Estuarine Studies written by Kaarina Weckström and published by Springer. This book was released on 2017-02-13 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this edited volume is to introduce the scientific community to paleoenvironmental studies of estuaries, to highlight the types of information that can be obtained from such studies, and to promote the use of paleoenvironmental studies in estuarine management. Readers will learn about the the application of different paleoecological approaches used in estuaries that develop our understanding of their response to natural and human influences. Particular attention is given to the essential steps required for undertaking a paleoecological study, in particular with regard to site selection, core extraction and chronological techniques, followed by the range of indicators that can be used. A series of case studies are discussed in the book to demonstrate how paleoecological studies can be used to address key questions, and to sustainably manage these important coastal environments in the future. This book will appeal to professional scientists interested in estuarine studies and/or paleoenvironmental research, as well as estuarine managers who are interested in the incorporation of paleoenvironmental research into their management programs.
Download or read book Biological and Geological Perspectives of Dinoflagellates written by F. Marret and published by Geological Society of London. This book was released on 2013-12-04 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides an overview of current research on fossil and modern dinoflagellates, as well as highlighting research areas for future collaboration, following the DINO9 International Conference in Liverpool. The volume is organized into four themes, with a review paper for each theme written by the key-note speaker. Each theme also includes a future research foci note following discussion during the conference. The contributions are organized into the following sections: environmental change, ecology/palaeoecology, life cycles and diversity, and stratigraphy and evolution. Also included are notes from two workshops: culture experiments and dinocysts as palaeoceanographic tracers. This volume will be of interest to both the biological and micropalaeontological communities.
Download or read book The Encyclopedia of Paleontology written by Rhodes W. Fairbridge and published by Springer. This book was released on 1979 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scholarly work with lengthy entries followed by references for further reading. Many illustrations. Indexed.
Download or read book A Geologic Time Scale 2004 written by Felix M. Gradstein and published by Cambridge University Press. This book was released on 2004 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new detailed international geologic time scale, including methodology and a wallchart.
Download or read book Studies on the Cell Wall of Dinoflagellate Resting Cysts written by John Peter Kokinos and published by . This book was released on 1994 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a series of investigations on the specialized cell covering of a dormant stage (the resting cyst) in the life cycle of the marine dinoflagellate Lingulodinium polyedra. These cell walls, along with those of resting cysts formed by many other dinoflagellate species, are resistant to degradation and persist in the depositional environment. Selective preservation of these materials has created a rich dinoflagellate fossil record (extending back ~225 million years) which has shown great utility in biostratigraphic applications. By elucidating the nature of resting cyst walls and directly observing their development in laboratory cultures, the research presented here addresses several long-standing questions regarding both the paleontology and biology of dinoflagellates. Although resting cyst formation has been reported in other extant species, this thesis documents for the first time the morphological development of resting cysts having "fossilizable", morphologically complex cell walls. In laboratory cultures of L. polyedra, resting cyst formation is an extremely rapid phenomenon; the transition from thecate, actively swimming planozygote to spine-bearing, morphologically mature hypnozygote occurs within 10-20 minutes. The basic mechanism consists of dramatic cell expansion resulting from the widening of an interstice between the planozygotic cytoplasm and a balloon-like membrane external to the theca. Key morphological events in the development of the distinctive L. polyedra resting cyst cell covering occur within this interstice. These include early dissociation and outward migration of the theca, formation of the resistant endophragm, and growth of spines from globules on the surface of the cytoplasm. The level of morphological maturity attained by the encysting cell depends primarily on how much development occurs before rupture of the expanding outer membrane. H rupture is premature, a wide variation of resting cyst morphology may occur, particularly with respect to the size, number, and distribution of processes. The direct observation of these developmental events has shed much light on several issues regarding resting cyst morphogenesis. First, growth of L. polyedra resting cyst spines is clearly centrifugal (i.e. growing radially outward). Although not necessarily representative of spine growth in all species, this mode of formation provides a useful preliminary framework for interpreting some of the "histrichosphaerid" morphologies present in the fossil record. Second, in this species at least, the theca plays no direct role in influencing the morphology of spines. Finally, considerable variation in spine morphology is possible within one biologically-defined species. This last point has considerable significance for cyst-based taxonomy, and strongly suggests that several of the fossil morphotypes traditionally designated as separate species of Lingulodinium are, in fact, synonymous. Ultrastructural examination of L. polyedra resting cysts formed in laboratory culture has shown, for the first time, the fine structure of the cell walls enclosing a living, paleontologically-signillcant resting cyst. Unfortunately, difficulties associated with fixation and infiltration of these thick-walled structures precluded an in-depth investigation of the ultrastructural dynamics underlying the morphological development described above. Preliminary results, however, confirm earlier speculation that only the outermost wall of the L. polyedra resting cyst is normally preserved in the fossil record. This outer wall (including spines) appears constructed of closely appressed structural units, an ultrastructural style apparently widespread among species related to L. polyedra. The resistant cell walls of L. polyedra resting cysts were isolated from laboratory cultures and chemically characterized by an extensive array of analytical techniques. Both thermal (pyrolysis) and chemical (CuO oxidation) dissociation of this material yielded suites of products consistent with a macromolecular substance composed signillcantly of aromatic components. In addition, the relative abundance of carboxylated phenols among resting cyst CuO oxidation products indicated that aromatic structural units in the dinoflagellate material may be largely carbon-carbon linked, probably directly through aromatic nuclei. Such a "condensed" arrangement may be, in part, responsible for the remarkable resistance of the dinoflagellate resting cyst wall biopolymer. Overall, the aromatic signature of L. polyedra resting cyst wall material can be clearly distinguished from that of both pollen wall "sporopollenin" and classical lignin. Although some short chain carboxylic acids are generated during CuO oxidation, there is little evidence obtained by dissociation techniques to suggest the significant presence of extended polymethylenic elements in this macromolecular substance. As a result, the dinoflagellate material appears fundamentally different from the highly aliphatic "algaenans" recently identified in the cell wall of several chlorophyte species. Interestingly, pyrolysis (Py-GC/MS) of resting cyst wall material produced an abundance ofprist-1-ene, strongly suggesting the presence of bound tocopherols which may play an important structural role in the resistant cell wall biopolymer. Lipid analysis of L. polyedra culture extract revealed a series of even carbon numbered fatty acids (C14 - C24), as well as sterols (including dinosterol and cholesterol), and a full suite of tocopherols. These compounds are present during construction of the resistant outer wall of the resting cyst, and could function as precursors to the resting cyst wall biopolymer. Another possibility, given the strong aromaticity predicted by the results of pyrolysis and CuO oxidation, is some contribution by aromatic amino acids in an analogous fashion to lignin biosynthesis. The extensive chemical characterization of the outermost cell wall of L. polyedra resting cysts reported in this thesis provides the first rigorous analysis of "fossilizable" biopolymer(s) produced by an extant dinoflagellate. Furthermore, these analyses represent an unprecedented level of chemical characterization of a resistant algal cell wall biopolymer, and clearly demonstrate the unique nature of the L. polyedra resting cyst wall. As a result, this work provides the first chemical data to justify the term "dinosporin", previously proposed to distinguish the highly resistant material comprising dinoflagellate resting cyst walls from other resistant cell wall biopolymers
Download or read book The Geologic Time Scale 2012 written by Felix Gradstein and published by Elsevier. This book was released on 2012-09-01 with total page 1175 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Geologic Time Scale 2012, winner of a 2012 PROSE Award Honorable Mention for Best Multi-volume Reference in Science from the Association of American Publishers, is the framework for deciphering the history of our planet Earth. The authors have been at the forefront of chronostratigraphic research and initiatives to create an international geologic time scale for many years, and the charts in this book present the most up-to-date, international standard, as ratified by the International Commission on Stratigraphy and the International Union of Geological Sciences. This 2012 geologic time scale is an enhanced, improved and expanded version of the GTS2004, including chapters on planetary scales, the Cryogenian-Ediacaran periods/systems, a prehistory scale of human development, a survey of sequence stratigraphy, and an extensive compilation of stable-isotope chemostratigraphy. This book is an essential reference for all geoscientists, including researchers, students, and petroleum and mining professionals. The presentation is non-technical and illustrated with numerous colour charts, maps and photographs. The book also includes a detachable wall chart of the complete time scale for use as a handy reference in the office, laboratory or field. - The most detailed international geologic time scale available that contextualizes information in one single reference for quick desktop access - Gives insights in the construction, strengths, and limitations of the geological time scale that greatly enhances its function and its utility - Aids understanding by combining with the mathematical and statistical methods to scaled composites of global succession of events - Meets the needs of a range of users at various points in the workflow (researchers extracting linear time from rock records, students recognizing the geologic stage by their content)
Download or read book Red Tides written by Tomotoshi Okaichi and published by Springer Science & Business Media. This book was released on 2004-06-04 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines large-scale outbreaks of red tide along coastal areas, which is associated with fish and shellfish mass mortalities through poisoning. This book discusses the red tide phenomena throughout the world, including biological research results on taxonomy of cyst and vegetative cells of red tide organisms and ecological and physiological studies using ecological modeling.
Download or read book Marine Phytoplankton written by Mona Hoppenrath and published by . This book was released on 2009 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a key to determine almost 300 phytoplankton species from the North Sea around Helgoland and Sylt, documenting them with close to 1100 images and 70 line drawings on 85 plates.
Download or read book Miocene Dinoflagellate Stratigraphy and Systematics of Maryland and Virginia written by Laurent De Verteuil and published by . This book was released on 1996 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applications of Non Pollen Palynomorphs written by F. Marret and published by Geological Society of London. This book was released on 2021-10-29 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This long-awaited book about non-pollen palynomorphs (NPPs) aims to cover gaps in our knowledge of these abundant but understudied palynological remains. NPPs, such as fungal spores, testate amoebae, dinoflagellate cysts, acritarchs and animal remains, are routinely recovered from palynological preparations of marine or terrestrial material, from Proterozoic to recent geological times. This book gives the reader a comprehensive overview of the different types of NPPs, with examples from diverse time periods and environments. It provides guidance on sample preparation to maximize the recovery of these NPPs, detailed information on their diversity and ecological affinity, clarification on the nomenclature and demonstrates their value as environmental indicators. This volume will become the reference guide for any student, academic or practitioner interested in everything else in their palynological preparations.
