Polycystinen
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Die Polycystinen Der Plankton Expedition
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Author : Friedrich DREYER
language : en
Publisher:
Release Date : 1913
Die Polycystinen Der Plankton Expedition written by Friedrich DREYER and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1913 with categories.
Polycystinen
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Author :
language : de
Publisher:
Release Date : 1900
Polycystinen written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1900 with categories.
Mikrogeologie
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Author : Christian Gottfried Ehrenberg
language : de
Publisher:
Release Date : 1854
Mikrogeologie written by Christian Gottfried Ehrenberg and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1854 with Infusoria categories.
Die Radiolarien Rhizopoda Radiaria
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Author : Ernst Haeckel
language : de
Publisher:
Release Date : 1862
Die Radiolarien Rhizopoda Radiaria written by Ernst Haeckel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1862 with Radiolaria categories.
Paleobiology Of The Polycystine Radiolaria
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Author : David Lazarus
language : en
Publisher: John Wiley & Sons
Release Date : 2020-12-21
Paleobiology Of The Polycystine Radiolaria written by David Lazarus and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-12-21 with Science categories.
Polycystine radiolaria are exclusively marine protists and are found in all ocean waters, from polar regions to the tropics, and at all water depths. There are approximately 600 distinct described living species and several thousand fossil species of polycystines. Radiolarians in general, and polycystines in particular, have recently been shown to be a major component of the living plankton and important to the oceanic carbon cycle. As fossils radiolarians are also fairly common, and often occur in sediments where other types of fossils are absent. This has made them very valuable for certain types of geologic research, particularly estimating the geologic age of the sediments containing them, and as guides to past oceanic water conditions. As our current understanding of the biology, and even taxonomy of the living fauna is still very incomplete, evolutionary studies based on living polycystines are still rare. However, the common occurrence of numerous specimens for many species, and in a wide variety of oceanic environments, provides an excellent opportunity to study the processes of biologic evolution in the fossil record. Paleobiology of the Polycystine Radiolaria is the first major book on radiolarians to appear in the western literature since 2001. Focusing on living and fossil siliceous shelled radiolarians, it is notable for its emphasis not upon morphologic or taxonomic detail but on concepts and applications. The book attempts to provide a balanced, critical review of what is known of the biology, ecology, and fossil record of the group, as well as their use in evolutionary, biostratigraphic and paleoceanographic research. Full chapters on the history of study, and molecular biology, are the first ever in book form. Written for an audience of advanced undergraduate to doctoral students, as well as for a broad range of professionals in the biological and Earth sciences, Paleobiology of the Polycystine Radiolaria summarizes current understanding of the marine planktonic protist group polycystine radiolaria, both in living and fossil form.
Radiolaria
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Author : Orvil Roger Anderson
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Radiolaria written by Orvil Roger Anderson and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
The study of marine plankton has traditionally focused on those or ganisms that appeared to have obvious ecological significance in un derstanding the major patterns of biological productivity, trophic relations, community structure, and the dynamic interaction of living things with the physical environment. Not infrequently, this thrust has centered on the apparently most abundant and/or larger members of the plankton community, including significant primary producers such as the diatoms, nonthecate algae, and flagellates, or the major con sumers--copepods, gelatinous metazoa, and other abundant metazoan invertebrates. Consequently, some of the less well recognized but also abundant microzooplankton have been given less attention. The radio laria, although widely studied as fossils by micropaleontologists, have in modem times. This is la been relatively neglected by biologists mentable given their widespread distribution in the oceans, remarkably complex form, and not infrequently localized abundance. Their diver sity of form, encompassing solitary species of microscopic dimensions and colonial species as large as several centimeters or more, challenges us to explain their evolutionary origins, explore their structural-func tional correlates, and comprehend the ecological basis for their wide spread occurrence in all oceans of the world fromihe greatest depth to the surface of the sea. Their intricate and aesthetically pleasing skeletons of enormous variety and fine-detailed design formed from amorphous silica (opaline glass) offer a unique biomineralized product that defies immediate biological explanation.
Die Polycystinen Der Plankton Expedition
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Author : Friedrich Dreyer
language : de
Publisher: Forgotten Books
Release Date : 2017-06-12
Die Polycystinen Der Plankton Expedition written by Friedrich Dreyer and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-06-12 with Science categories.
Excerpt from Die Polycystinen der Plankton-Expedition: Lieferung 1 Allerdings ist diese Unterscheidung auf den Bauplan hin nur durch Vergleichung zu erfassen, l) sie drfte aber bestehen bleiben, auch wenn durch knftige Untersuchungen die Unterscheidung auf die Verschiedenheit in der Perforierung der Zentralkapsel hin etwa in Frage gezogen werden sollte. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Die Theorie Der Biokrystallisation Im Allgemeinen Und Die Skelettbildung Der Polycystinen Im Besonderen
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Author : Friedrich Dreyer
language : de
Publisher:
Release Date : 1890
Die Theorie Der Biokrystallisation Im Allgemeinen Und Die Skelettbildung Der Polycystinen Im Besonderen written by Friedrich Dreyer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1890 with categories.
Die Radiolarien Rhizopoda Radiaria Th Die Radiolarien
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Author : Ernst Heinrich Philipp August Hackel
language : de
Publisher:
Release Date : 1862
Die Radiolarien Rhizopoda Radiaria Th Die Radiolarien written by Ernst Heinrich Philipp August Hackel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1862 with Radiolaria categories.
Report On The Radiolaria Collected By H M S Challenger During The Years 1873 1876 Porulosa Spumellaria And Acantharia And Subclass Osculosa
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Author : Ernst Heinrich Philipp August Haeckel
language : en
Publisher: Library of Alexandria
Release Date : 2020-09-28
Report On The Radiolaria Collected By H M S Challenger During The Years 1873 1876 Porulosa Spumellaria And Acantharia And Subclass Osculosa written by Ernst Heinrich Philipp August Haeckel and has been published by Library of Alexandria this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-09-28 with Fiction categories.
ÊThe significance of the Radiolaria in regard to the relations of life in the ocean has been increased in a most unexpected manner by the discoveries of the Challenger. Large swarms of these delicate Rhizopoda were found not only at the surface of the open ocean but also in its different bathymetrical zones. Thousands of new species make up the wonderful Radiolarian ooze, which covers large areas of the deep-sea bed, and was brought up from abysses of from 2000 to 4000 fathoms by the sounding machine of the Challenger. They open a new world to morphological investigation. When ten years ago (in the autumn of 1876) I accepted the enticing invitation of Sir Wyville Thomson to undertake the investigation of these microscopic creatures, I hoped to be able to accomplish the task with some degree of completeness within a period of from three to five years, but the further my investigations proceeded the more immeasurable seemed the range of forms, like the boundless firmament of stars. I soon found myself compelled to decide between making a detailed study of a selection of special forms or giving as complete a survey as possible of the varied forms of the whole class; and I decided upon the latter course, having regard both to the general plan of the Challenger Reports, and to the interests of our acquaintance with the class as a whole. I must, however, confess at the close of my work that my original intention is far from having been fulfilled. The extraordinary extent and varied difficulties of the undertaking must excuse the many deficiencies. The special examination of the Challenger collection was for the most part completed in the summer of 1881; I collected its results in my Entwurf eines Radiolarien-Systems auf Grund von Studien der Challenger-Radiolarien (Jenaische Zeitschr. f. Naturw., Bd. xv., 1881). Since the manuscript of this preliminary communication was completed only a few days before my departure for Ceylon, and since I was unable to correct the proofs myself, several errors have crept into the Prodromus Systematis Radiolarium included in it. These have been corrected in the following more extensive working out of it. Even at that time I had distinguished 630 genera and more than 2000 species; but on the revision of these, which I undertook immediately on my return from India, this number was considerably increased. The total number of forms here described amounts to 739 genera and 4318 species; of these 3508 are new, as against 810 previously described. In spite of this large number, however, and in spite of the astonishing variety of the new and marvellous forms, the riches of the Challenger collection are by no means exhausted. A careful and patient worker who would devote a second decade to the work, would probably increase the number of new forms (especially of the smaller ones) by more than a thousand; but for a really complete examination, the lifetime of one man would not suffice.