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Books > Science & Mathematics > Biology, life sciences > Hydrobiology > Marine biology
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Biogeography and Biodiversity of Western Atlantic Mollusks (Hardcover, New)
Loot Price: R5,838
Discovery Miles 58 380
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Biogeography and Biodiversity of Western Atlantic Mollusks (Hardcover, New)
Expected to ship within 12 - 19 working days
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Shallow water marine molluscan faunas are distributed in a pattern
of distinct, geographically definable areas. This makes mollusks
ideal for studying the distribution of organisms in the marine
environment and the processes and patterns that control their
evolution. Biogeography and Biodiversity of Western Atlantic
Mollusks is the first book to use quantitative methodologies to
define marine molluscan biogeographical patterns. It traces the
historical development of these patterns for the subtropical and
tropical western Atlantic. The book discusses the multistage
process of evolving new taxa caused by eustatic fluctuations,
ecological stress, and evolutionary selection. Drawing on his
decades of intensive field work, the author defines three western
Atlantic molluscan provinces and 15 subprovinces based on his
Provincial Combined Index, a modern refinement of Valentine's 50%
rule. The faunal provinces-Carolinian, Caribbean, and Brazilian-are
discussed in detail. The text defines the physical aspects of the
provinces using quantitative data, with water temperature as the
primary parameter. It discusses the details of the 15
subprovinces-geographically definable faunal subdivisions-as well
as provinciatones, transition zones of provincial overlap. The
author's algorithms demonstrate that the bulk of the molluscan
biodiversity is concentrated in 40 separate centers of speciation,
ranging from Cape Hatteras, North Carolina, south to Argentina.
Many of these evolutionary hotspots reside on remote archipelagos
and offshore banks as well as within areas of provincial overlap.
The text describes some of the more exotic and poorly known areas
and presents maps and color photographs of characteristic habitats,
index species, and live animals, including over 400 species of rare
and seldom seen shells.
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