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Late Pleistocene Vegetation of Kings Canyon, Sierra Nevada, California

Published online by Cambridge University Press:  20 January 2017

Kenneth Cole*
Affiliation:
Laboratory of Paleoenvironmental Studies, Department of Geosciences, University of Arizona, Tucson, Arizona 85721 USA

Abstract

Seven packrat midden samples make possible a comparison between the modern and late Pleistocene vegetation in Kings Canyon on the western side of the southern Sierra Nevada. One modern sample contains macrofossils and pollen derived from the present-day oak-chaparral vegetation. Macrofossils from the six late Pleistocene samples record a mixed coniferous forest dominated by the xerophytic conifers Juniperus occidentalis, Pinus cf. ponderosa, and P. monophylla. The pollen spectra of these Pleistocene middens are dominated by Pinus sp., Taxodiaceae-Cupressaceae-Taxaceae (TCT), and Artemisia sp. Mesophytic conifers are represented by low macrofossil concentrations. Sequoiadendron giganteum is represented by a few pollen grains in the full glacial. Edaphic control and snow dispersal are the most likely causes of these mixed assemblages.

The dominant macrofossils record a more xeric plant community than those that now occur on similar substrates at higher elevations or latitudes in the Sierra Nevada. These assemblages suggest that late Wisconsin climates were cold with mean annual precipitation not necessarily greater than modern values. This conclusion supports a model of low summer ablation allowing for the persistence of the glaciers at higher elevations during the late Wisconsin. The records in these middens also suggest that S. giganteum grew at lower elevations along the western side of the range and that P. monophylla was more widely distributed in cismontane California during the Pleistocene.

Type
Original Articles
Copyright
University of Washington

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References

Adam, D.P.. 1967. Late-Pleistocene and recent palynology in central Sierra Nevada, California. Quaternary Paleoecology. Cushing, E.J., Wright, H.E.. Yale Univ. Press, New Haven. 275301.Google Scholar
Axelrod, D.I.. 1959. Late Cenozoic evolution of the Sierran bigtree forest. Evolution 13. 923.Google Scholar
Axelrod, D.I.. 1976. History of the coniferous forests, California and Nevada. University of California, Berkeley, Publications in Botany 70. 162.Google Scholar
Axelrod, D.I.. 1981. Holocene climatic changes in relation to vegetation disjunction and speciation. American Naturalist 117. 847870.CrossRefGoogle Scholar
Batchelder, G.. 1980. A late Wisconsinan and early Holocene lacustrine stratigraphy and pollen record from the west slope of the Sierra Nevada, California American Quaternary Association, 6th Biennial Meeting Absracts 13.Google Scholar
Berger, R., Libby, W.F.. 1966. U.C.L.A. radiocarbon dates V. Radiocarbon 8. 492.Google Scholar
Betancourt, J.L., Van Devender, T.R.. 1981. Holocene vegetation in Chaco Canyon, New Mexico. Science 215. 656658.Google Scholar
Buchholz, J.T.. 1940. A statistical study of two variables in the Sequoia's pollen grain size and cotyledon number. American Naturalist 74. 219283.Google Scholar
Cole, K.L.. 1981. Late Quaternary environments in the eastern Grand Canyon: Vegetational gradients over the last 25,000 years. Unpublished Ph.D. dissertation. University of Arizona.Google Scholar
Cole, K.L.. 1982. Late Quaternary zonation of vegetation in the eastern Grand Canyon. Science 217. 11421145.CrossRefGoogle ScholarPubMed
Erdtman, x.. 1957. Pollen and Spore Morphology/Plant Taxanomy Vol. 2. Ronald Press, New York.Google Scholar
Haller, J.K.. 1962. Variation and hybridization in ponderosa and Jeffrey pines. University of California, Berkeley, Publications in Botany 34. 123165.Google Scholar
Harlow, W.. 1932. The identification of the pines of the United States, native and introduced, by needle structure. Bulletin of the New York State College of Forestry 4 No. 2a.Google Scholar
Hill, M.. 1975. Geology of the Sierra Nevada. Univ. of California Press, Berkeley.Google Scholar
Kapp, R.O.. 1969. How to Know Pollen and Spores. W. C. Brown, Dubuque, Iowa.Google Scholar
King, J.E., Van Devender, T.R.. 1977. Pollen analysis of fossil packrat middens from the Sonoran Desert. Quaternary Research 8. 191204.Google Scholar
Major, J.. 1977. California climate in relation to vegetation. Terrestrial Vegetation of California. Barbour, M.C., Majors, J.. Wiley, New York. 1174.Google Scholar
Mason, H.. 1944. A Pleistocene flora from the McKittrick asphalt deposits of California. California Academy of Sciences Proceedings (4th Ser.) 25. 221234.Google Scholar
Muir, J.. 1876. On the post-glacial history of Sequoia gigantea . Proceedings of the American Association for the Advancement of Science 25. 242253.Google Scholar
Munz, P.A.. 1974. A Flora of Southern California. Univ. of California Press, Berkeley.Google Scholar
Raven, P.H., Axelrod, D.I.. 1977. Origin and relationships of the California flora. University of California Publications in Botany 72. 1134.Google Scholar
Rundel, P.W.. 1972. Habitat restriction in giant sequoia: The environmental control of grove boundaries. American Midland Naturalist 87. 8199.Google Scholar
Spaulding, W.G., Leopold, E.B., Van Devender, T.R.. 1982. Late-Wisconsin paleoecology of the American Southest. Late Pleistocene Environments of the United States. Porter, S.C.. Univ. of Minnesota Press, Minneapolis. in press.Google Scholar
Stebbins, G.L., Major, J.. 1965. Endemism and speciation in the California flora. Ecological Monographs 35. 135.Google Scholar
Van Devender, T.R., Spaulding, W.G.. 1979. Development of vegetation and climate in the southwestern United States. Science 204. 701710.CrossRefGoogle ScholarPubMed
Vankat, J.L., Major, J.. 1978. Vegetation changes in Sequoia National Park, California. Journal of Biogeography 5. 337402.Google Scholar
Wells, P.V.. 1976. Macrofossil analysis of woodrat (Neotoma) middens as a key to the Quaternary vegetational history of arid America. Quaternary Research 6. 223248.Google Scholar
Wells, P.V.. 1979. An equable glaciopluvial in the west: Pleniglacial evidence of increased precipitation on a gradient from the Great Basin to the Sonoran and Chihuahuan Deserts. Quaternary Research 12. 311325.CrossRefGoogle Scholar