3-8.Īllen, C.D., Betancourt, J., and Swetnam, T.W., Landscape changes in the southwestern United States: Techniques, long-term data sets, and trends: United States Geological Survey, Retrieved April 22, 2007, from. Origin of paleo packrat middens at the Desert Laboratory across the Southwest in space and time.Īgenbroad, L.D., and Mead, J.I., 1994, Documented Quaternary climate change on the Colorado Plateau: 40,000 yr B.P.-present, in Waugh, W.J., ed., Proceedings of the Workshop, Climate Change in the Four Corners and Adjacent Regions: Implications for Environmental Restoration and Land-Use Planning, September 12-14, 1994, Mesa State College, Grand Junction, Colorado, p. Please contact the Desert Laboratory ( ) for all inquiries. The collection is open to researchers and tours upon appointment. #Packrat colorado fullDespite important insights gained, the full range and abundance of information that can be extracted from middens remains to be explored, particularly in light of recent and impending advances in ancient DNA (aDNA), genomics, geochemistry, informatics, microscopy, and theoretical ecology. Midden materials are among the richest and diverse sources of well- preserved plant and animal remains worldwide and have been used in clever and unique ways to investigate ecophysiological, phenotypic, genetic, distributional, and community response to climate variability and change. Midden data are archived at the USGS-NOAA North American Packrat midden Database ( ) and are also being incorporated into the Neotoma Paleoecology Database ( ). U of Arizona Press), providing training and support for many of its practitioners. 1990, Packrat Middens: The Last 40,000 Years of Biotic Change. These middens offer unrivaled taxonomic and spatial resolution, and hence unique perspectives, on the stability, disassembly, and assembly of local communities through major climatic events in the dynamic late Quaternary.įor nearly five decades, the University of Arizona has served as a hub for packrat midden research in North America (e.g., Betancourt et al. Since 1960, more than 2,000 fossil packrat middens have been collected, dated, and analyzed from western North America, with nearly a third of these contained in the Desert Laboratory’s collection.
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