By Bruce S. Lieberman

ISBN-10: 030646277X

ISBN-13: 9780306462771

Biogeography relates the evolution of the Earth's biota to significant episodes within the Earth's background corresponding to climatic alterations and plate tectonic occasions. moreover, biogeographic styles have performed a famous function within the improvement of the idea of evolution. therefore biogeography has the capability to make very important contributions to the box of geobiology. Paleobiogeography emphasizes how analytical ideas from phylogenetic biogeography will be utilized to the examine of styles in the fossil checklist. In doing this, it considers the strengths and weaknesses of paleobiogeographic information, the consequences of plate tectonic approaches (specifically continental rifting and collision) and adjustments in relative sea degrees by way of how they impact the evolution and distribution of organisms.

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Extra info for Paleobiogeography: Using Fossils to Study Global Change, Plate Tectonics, and Evolution (Topics in Geobiology 16)

Sample text

These cycles were driven by subtle changes in insolation resulting from astronomical cycles and amplified by other cascading effects of the overall climate system of the Earth. Depending on the position of the continents, oceanic current systems, and mountain belts, climate change associated with this Milankovitch cyclicity mayor may not be particularly profound. , biogeographic patterns, in the genealogical and economic hierarchies. First, for the genealogical hierarchy: Obviously, the Milankovitch climate cycles operate over timescales much longer than the lifetime of any organism and probably almost all populations (and of course this is also true of other even smaller entities).

When the communities of any given region are studied through time they appear to change. For example, Van Valkenburg (1988), and Webb (1989) have discussed the way in which the terrestrial mammalian communities of North America have changed over millions of years, but communities cannot evolve as populations or species do because they cannot reproduce or make more of themselves. 12 Chapter 2 Other ideas or concepts in evolutionary biology that have been illuminated by this hierarchical framework include whether or not higher taxa can be held to sit on adaptive peaks by occupying a particular niche [see Eldredge (1985a)).

In other words, the geographic distribution of organisms within populations related evolutionarily via a pattern of descent and the geographic occurrence of organisms interacting with one another in populations might be congruent. However, as we climb each of the hierarchies, we move further away from these bridging entities and so biogeographic patterns become more dissimilar. Ecological biogeographic topics focusing on higher-level entities might include a study of why it is that throughout the biosphere taxonomic diversity correlates with latitude.

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Paleobiogeography: Using Fossils to Study Global Change, Plate Tectonics, and Evolution (Topics in Geobiology 16) by Bruce S. Lieberman


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