Global changes in climate forced major changes in plant and animal distributions, especially in the high and mid-latitudes. During the Full Glacial, remains of trees that now grow in the northern boreal forest were found in Tennessee where their fossils were associated with deciduous hardwoods and even cypress-swamp types, creating strange mixtures of genera. Plants and animals that had dispersed to lower latitudes and in areas of southerly environments during glacials dispersed northward again during the postglacial warming. Thus, the Quaternary period records some of the more extreme climate changes known in Earth's history.
SEE ALSO: Ice Ages; Little Ice Age; Milankovitch, Milu-tin; Orbital Parameters, Eccentricity; Orbital Parameters, Obliquity; Orbital Parameters, Precession.
BIBLIOGRAPHY. H.R. Delcourt and P.A. Delcourt, Quaternary Ecology: A Paleoecological Perspective (Chapman & Hall, 1998); Alan Graham, Late Cretaceous and Cenozoic History of North American Vegetation (Oxford University Press, 1999); P.D. Moore, W.G. Chaloner, and P. Scott, Global Environmental Change (Blackwell Science, 1996).
Estella B. Leopold University of Washington
Was this article helpful?
Thousands Have Used Chemicals To Improve Their Medical Condition. This Book Is one Of The Most Valuable Resources In The World When It Comes To Chemicals. Not All Chemicals Are Harmful For Your Body – Find Out Those That Helps To Maintain Your Health.