Additions to the Panamic Province Gastropod (Mollusca) Literature, 1971 to 1992 PDF Download
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Author: Carol Skoglund
Publisher:
ISBN:
Category : Gastropoda
Languages : en
Pages : 336
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Book Description
Author: Carol Skoglund
Publisher:
ISBN:
Category : Gastropoda
Languages : en
Pages : 336
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Book Description
Author:
Publisher: Academy of Natural Sciences
ISBN: 9781437955514
Category :
Languages : en
Pages : 244
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Author: Charles F. Sturm
Publisher: Universal-Publishers
ISBN: 1581129300
Category : Science
Languages : en
Pages : 445
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Book Description
Mollusks have been important to humans since our earliest days. Initially, when humans were primarily interested in what they could eat or use, mollusks were important as food, ornaments, and materials for tools. Over the centuries, as human knowledge branched out and individuals started to study the world around them, mollusks were important subjects for learning how things worked. In this volume, the editors and contributors have brought together a broad range of topics within the field of malacology. It is our expectation that these topics will be of interest and use to amateur and professional malacologists.
Author: Ingo S. Wehrtmann
Publisher: Springer Science & Business Media
ISBN: 1402082789
Category : Science
Languages : en
Pages : 545
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Book Description
Life began in the sea, and even today most of the deep diversity of the planet is marine. This is often forgotten, especially in tropical countries like Costa Rica, renowned for their rain forests and the multitude of life forms found therein. Thus this book focusing on marine diversity of Costa Rica is particularly welcome. How many marine species are there in Costa Rica? The authors report a total of 6,777 species, or 3. 5% of the world’s total. Yet the vast majority of marine species have yet to be formally described. Recent estimates of the numbers of species on coral reefs range from 1–9 million, so that the true number of marine species in Costa Rica is certainly far higher. In some groups the numbers are likely to be vastly higher because to date they have been so little studied. Only one species of nematode is reported, despite the fact that it has been said that nematodes are the most diverse of all marine groups. In better studied groups such as mollusks and crustaceans, reported numbers are in the thousands, but even in these groups many species remain to be described. Indeed the task of describing marine species is daunting – if there really are about 9 million marine species and Costa Rica has 3. 5% of them, then the total number would be over 300,000. Clearly, so much remains to be done that new approaches are needed. Genetic methods have en- mous promise in this regard.
Author: James W. Valentine
Publisher: University of Chicago Press
ISBN: 9780226389134
Category : Science
Languages : en
Pages : 500
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Book Description
Representing the state of the art in evolutionary paleobiology, this book provides a much-needed overview of this rapidly changing field. An influx of ideas and techniques both from other areas of biology and from within paleobiology itself have resulted in numerous recent advances, including increased recognition of the relationships between ecological and evolutionary theory, renewed vigor in the study of ecological communities over geologic timescales, increased understanding of biogeographical patterns, and new mathematical approaches to studying the form and structure of plants and animals. Contributors to this volume—a veritable who's who of eminent researchers—present the results of original research and new theoretical developments, and provide directions for future studies. Individually wide ranging, these papers all share a debt to the work of James W. Valentine, one of the founders of modern evolutionary paleobiology. This volume's unified approach to the study of life on earth will be a major contribution to paleobiology, evolution, and ecology.
Author:
Publisher:
ISBN:
Category : Mollusks
Languages : en
Pages : 56
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Author: Martin Avery Snyder
Publisher: Academy of Natural Sciences
ISBN: 9780910006576
Category : Science
Languages : en
Pages : 440
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Author: Hugh Bradner
Publisher:
ISBN:
Category : Cowries
Languages : en
Pages : 346
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Author: Kirstie L. Kaiser
Publisher:
ISBN:
Category : Mollusks
Languages : en
Pages : 76
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Book Description
Author: Janet M. Sowers
Publisher: Nuclear Regulatory Commission
ISBN:
Category : Science
Languages : en
Pages : 1038
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Book Description
