Abstract
The AMIGO project has been termed “An interhemispheric and interdisciplinary research program to measure and understand ecosystem responses to global change” (Committee on AMIGO). Its goals include the development of comparative studies of ecosystem response in western North and South America, regions that have many parallel geobiospheric features (Fuentes, Kronberg, & Mooney, 1991). It is hoped that these interhemispheric comparisons will help distinguish natural from anthropogenic change and aid in policy making and monitoring of natural systems. Evaluating tree rings are one means by which past climatic change and forest ecosystem response can be compared between the Northern Hemisphere and the Southern Hemisphere.
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