By Edward J. Petuch

ISBN-10: 1138033758

ISBN-13: 9781138033757

ISBN-10: 146657979X

ISBN-13: 9781466579798

Shallow water marine molluscan faunas are allotted in a development of unique, geographically definable components. This makes mollusks excellent for learning the distribution of organisms within the marine setting and the strategies and styles that keep watch over their evolution. Biogeography and Biodiversity of Western Atlantic Mollusks is the 1st booklet to take advantage of quantitative methodologies to outline marine molluscan biogeographical styles. It lines the historic improvement of those styles for the subtropical and tropical western Atlantic. The e-book discusses the multistage means of evolving new taxa attributable to eustatic fluctuations, ecological tension, and evolutionary choice.

Drawing on his a long time of in depth box paintings, the writer defines 3 western Atlantic molluscan provinces and 15 subprovinces according to his Provincial mixed Index, a contemporary refinement of Valentine’s 50% rule. The faunal provinces—Carolinian, Caribbean, and Brazilian—are mentioned intimately. The textual content defines the actual elements of the provinces utilizing quantitative information, with water temperature because the basic parameter. It discusses the main points of the 15 subprovinces—geographically definable faunal subdivisions—as good as provinciatones, transition zones of provincial overlap.

The author’s algorithms display that the majority of the molluscan biodiversity is focused in forty separate facilities of speciation, starting from Cape Hatteras, North Carolina, south to Argentina. a lot of those evolutionary hotspots live on distant archipelagos and offshore banks in addition to inside of components of provincial overlap. The textual content describes a number of the extra unique and poorly identified parts and offers maps and colour photos of attribute habitats, index species, and dwell animals, together with over four hundred species of infrequent and infrequently visible shells.

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Biogeography and Biodiversity of Western Atlantic Mollusks by Edward J. Petuch

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