Northern Tree Diversity

Paper Summary:

This paper discusses the diversity gradient of trees in between southern and northern Europe. The paper looks at two perspectives. The first is the equilibrium hypothesis and the second is the disequilibrium hypothesis. This essay explores two researchers' arguments about the latitudinal diversity gradient of woody plants in Europe.

From the Paper:

"Questions about biodiversity levels in different regions have been puzzling scientists for many years. For example, one of the largest questions in biodiversity is why is species diversity higher in the tropics then in temperate zones (Silvertown, 1985, p. 519). Two broad categories of hypotheses have been used to explain the differences in tropical and temperate biodiversity. The first are generally known as equilibrium hypotheses. Equilibrium hypotheses argue that present climatic and biotic conditions determine latitudinal biodiversity (MacDonald, 2003, p. 422). Disequilibrium or historical hypotheses argue that past conditions are more important (MacDonald, 2003, p. 415). "

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