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Although drought is recognized as an important and overarching driver of ecosystem change, its occurrence and effects have been difficult to describe over large geographic areas (Hogg and others 2008, Panu and Sharma 2002).
Keywords: Measuring drought, grasslands
Source: In: GTR-WO-93b Effects of drought on forests and rangelands in the United States. U.S. Department of Agriculture, Forest Service,
Southern Research Station (SRS), Eastern Forest Environmental Threat Assessment Center (EFETAC), Asheville, NC 28801.