lands would qualify as biogeographic regions on the basis of the distinctness of their biotas, islands are treated differently from continents.
Most species are confined to a single biogeographic region. The most widespread species today is probably Homo sapiens, but a few other species—for example, the great egret, the osprey, the peregrine falcon, and the barn owl—are found on all continents except Antarctica.
Next we will discuss the influence of speciation, extinction, and other historical processes on biogeographic patterns, and then consider the influence of processes operating today.
Was this article helpful?
This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.