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Greg Osmond
May 10, 2013 09:05PM

I was watching two Minke whales for one hour today near my home in Woody Point, ...
Melvin Lusterio
May 09, 2013 08:05PM

The Good Force be with you! Well done, Team Curiosity! Keep it up! Live fo...
shaymaa elgbaly
May 09, 2013 01:05AM

amazing !
C Michael Hogan
May 08, 2013 09:05PM

Documentation on the Seine barges in the 17th century is scant, but apparently m...

Biogeography

Biogeography

Biogeography is the study of the distribution of biological organisms. The scale of analysis ranges from very small micro-topography regimes to continental dimensions. Fundamental concepts in this field of study are the nature of barrier formation and response of species to their patterns of travel and migration; in particular, the presence of rivers, mountain ranges, deserts and other natural boundaries are examples of large scale barriers. Besides such major landform barriers there are soil, topographic and meteorological factors that influence the distribution of each species. In the case of smaller scale regimes that are applicable for some bacteria or limited range plant species, there are often very restricted niches; for example, certain bacteria extremophiles may be limited to such localized features as small geyser pools, and some rare plants may have a single extant colony defined specialized soils such as serpentine and narrow climatic zone. Inherent in the concept of biogeography are the processes of speciation, extinction, dispersal and migration.   

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