By Edward J. Petuch
Shallow water marine molluscan faunas are allotted in a trend of unique, geographically definable components. This makes mollusks excellent for learning the distribution of organisms within the marine setting and the procedures and styles that regulate their evolution. Biogeography and Biodiversity of Western Atlantic Mollusks is the 1st ebook to take advantage of quantitative methodologies to outline marine molluscan biogeographical styles. It lines the old improvement of those styles for the subtropical and tropical western Atlantic. The booklet discusses the multistage strategy of evolving new taxa because of eustatic fluctuations, ecological pressure, and evolutionary choice.
Drawing on his many years of in depth box paintings, the writer defines 3 western Atlantic molluscan provinces and 15 subprovinces according to his Provincial mixed Index, a latest refinement of Valentine’s 50% rule. The faunal provinces—Carolinian, Caribbean, and Brazilian—are mentioned intimately. The textual content defines the actual features of the provinces utilizing quantitative facts, with water temperature because the fundamental 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 exhibit that the majority of the molluscan biodiversity is targeted 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 parts of provincial overlap. The textual content describes the various extra unique and poorly recognized parts and offers maps and colour pictures of attribute habitats, index species, and stay animals, together with over four hundred species of infrequent and rarely obvious shells.
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Additional resources for Biogeography and Biodiversity of Western Atlantic Mollusks
Biogeography and Biodiversity of Western Atlantic Mollusks by Edward J. Petuch