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Late Quaternary vegetation and climate history of the central Bering land bridge from St. Michael Island, western Alaska

Published online by Cambridge University Press:  20 January 2017

Thomas A. Ager
Thomas A. Ager*
Affiliation:
U.S. Geological Survey, Mail Stop 980, Box 25046, Denver Federal Center, Denver, CO 80225, USA
*
*Fax: +1-303-236-5349. E-mail address:tager@usgs.gov
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Abstract

Pollen analysis of a sediment core from Zagoskin Lake on St. Michael Island, northeast Bering Sea, provides a history of vegetation and climate for the central Bering land bridge and adjacent western Alaska for the past ≥30,000 14C yr B.P. During the late middle Wisconsin interstadial (≥30,000–26,000 14C yr B.P.) vegetation was dominated by graminoid-herb tundra with willows (Salix) and minor dwarf birch (Betula nana) and Ericales. During the late Wisconsin glacial interval (26,000–15,000 14C yr B.P.) vegetation was graminoid-herb tundra with willows, but with fewer dwarf birch and Ericales, and more herb types associated with dry habitats and disturbed soils. Grasses (Poaceae) dominated during the peak of this glacial interval. Graminoid-herb tundra suggests that central Beringia had a cold, arid climate from ≥30,000 to 15,000 14C yr B.P. Between 15,000 and 13,000 14C yr B.P., birch shrub-Ericales-sedge-moss tundra began to spread rapidly across the land bridge and Alaska. This major vegetation change suggests moister, warmer summer climates and deeper winter snows. A brief invasion of Populus (poplar, aspen) occurred ca.11,000–9500 14C yr B.P., overlapping with the Younger Dryas interval of dry, cooler(?) climate. During the latest Wisconsin to middle Holocene the Bering land bridge was flooded by rising seas. Alder shrubs (Alnus crispa) colonized the St. Michael Island area ca. 8000 14C yr B.P. Boreal forests dominated by spruce (Picea) spread from interior Alaska into the eastern Norton Sound area in middle Holocene time, but have not spread as far west as St. Michael Island.

Keywords

AlaskaCentral BeringiaLand bridgePollenPaleoecologyPaleoclimates
Type
Research Article
Information
Quaternary Research , Volume 60 , Issue 1 , July 2003 , pp. 19 - 32
Copyright
University of Washington

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References

Ager, T.A., (1982). Vegetational history of western Alaska during the Wisconsin glacial interval and Holocene. Hopkins, D.M., Matthews, J.V. Jr., Schweger, C.E., and Young, S.B. Paleoecology of Beringia. Academic Press, New York. 75–93.Google Scholar
Ager, T.A., (1983). Holocene vegetational history of Alaska. Wright, H.E. Late Quaternary Environments the United States. Vol. 1, The Holocene. Univ. of Minnesota Press, Minneapolis. 128–141.Google Scholar
Ager, T.A., (2002). Paleoenvironments of the Bering land bridge and the North Pacific coast during the late Wisconsin and early Holocene. Program and Abstracts of the 17th Biennial Meeting, American Quaternary Association, Anchorage., pp.10–12.Google Scholar
Ager, T.A., and Brubaker, L.B., (1985). Quaternary palynology and vegetational history of Alaska. Bryant, V.M. Jr., and Holloway, R.G. Pollen Records of Late-Quaternary North American Sediments. American Association of Stratigraphic Palynologists Foundation, Dallas. 353–384.Google Scholar
Anderson, P.M., (1985). Late Quaternary vegetational change in Kotzebue Sound area, northwestern Alaska. Quaternary Research 24, 307–321.Google Scholar
Anderson, P.M., (1988). Late Quaternary pollen records from the Kobuk and Noatak River drainages, northwestern Alaska. Quaternary Research 29, 263–276.Google Scholar
Anderson, P.M., Bartlein, P.J., Brubaker, L.B., Gajewski, K., and Ritchie, J.C., (1989). Modern analogues of late-Quaternary pollen spectra from the western interior of North America. Journal of Biogeography 16, 573–596.Google Scholar
Anderson, P.M., Lozhkin, A.V., (2002). Late Quaternary vegetation and climate of Siberia and the Russian Far East (Palynological and radiocarbon database). U.S. National Oceanic and Atmospheric Administration (NOAA) Paleoclimatology Program, and Russian Academy of Sciences, Far East Branch, North East Science Center, Magadan, Russia.Google Scholar
Bard, E., Hamelin, B., Fairbanks, R.G., and Zindler, A., (1990). Calibration of the 14C timescale over the past 30,000 years using mass spectrometric U-Th ages from Barbados corals. Nature 345, 405–410.CrossRefGoogle Scholar
Bartlein, P.J., Anderson, K.H., Anderson, P.M., Edwards, M.E., Mock, C.J., Thompson, R.S., Webb, R.S., Webb, T. III, and Whitlock, C., (1998). Paleoclimatic simulations for North America over the past 21,000 years. features of the simulated climate and comparisons with paleoenvironmental data. Quaternary Science Reviews 17, 549–585.Google Scholar
Beierle, B.D., (2002). Stratigraphic displacement of a tephra bed in organic lake sediments. Geological Society of America Abstracts with Programs 34-1, A-24 Google Scholar
Berger, A., and Loutre, M.F., (1991). Insolation values for the climate of the last 10 million years. Quaternary Science Reviews 10, 297–317.CrossRefGoogle Scholar
Colbaugh, P.R., (1968). The environment of the Imuruk Lake area, Seward Peninsula, Alaska during Wisconsin time. Master’s thesis. Department of Zoology, Ohio State University, Columbus.Google Scholar
Colinvaux, P.A., (1964). The environment of the Bering land bridge. Ecological Monographs 34, 297–329.Google Scholar
Colinvaux, P.A., (1967). A long pollen record from St. Lawrence Island, Bering Sea (Alaska). Palaeogeography, Palaeoclimatology, Palaeoecology 3, 29–48.Google Scholar
Colinvaux, P.A., (1981). Historical ecology of Beringia. the south land bridge coast of St. Paul Island. Quaternary Research 16, 18–36.Google Scholar
Dixon, E.J., (2001). Human colonization of the Americas. timing, technology and process. Quaternary Science Reviews 20, 277–299.Google Scholar
Edwards, M., (2002). Full- and late-glacial vegetation of continental Beringia. Program and Abstracts of 17th Biennial Meeting. American Quaternary Association, Anchorage. 35–37.Google Scholar
Elias, S.A., (2001). Mutual climatic range reconstructions of seasonal temperatures based on Late Pleistocene fossil beetle assemblages in eastern Beringia. Quaternary Science Reviews 20, 77–91.Google Scholar
Elias, S.A., Short, S.K., and Birks, H.H., (1997). Late Wisconsin environments of the Bering Land Bridge. Palaeogeography, Palaeoclimatology, Palaeoecology 136, 293–308.Google Scholar
Elias, S.A., Short, S.K., Nelson, C.H., and Birks, H.H., (1996). The life and times of the Bering Land Bridge. Nature 382, 60–63.Google Scholar
Elias, S.A., Short, S.K., and Phillips, R.L., (1992). Paleoecology of late-glacial peats from the Bering Land Bridge, Chukchi Sea shelf region, northwestern Alaska. Quaternary Research 38, 371–378.Google Scholar
Faegri, K., and Iversen, J., (1964). Textbook of Pollen Analysis. Munksgaard, Copenhagen.Google Scholar
Fairbanks, R.G., (1989). A 17,000-year glacio-eustatic sea level record. influence of glacial melting rates on the Younger Dryas event and deep-ocean circulation. Nature 342, 637–642.Google Scholar
Guthrie, R.D., (2001). Origin and causes of the mammoth steppe. a story of cloud cover, woolly mammoth tooth pits, buckles, and inside-out Beringia. Quaternary Science Reviews 20, 549–574.Google Scholar
Hamilton, T.D., (1994). Late Cenozoic glaciation of Alaska. Plafker, G., and Berg, H.C. The Geology of North America, G-1. Geological Society of America, Boulder. 813–844.Google Scholar
Hoare, J.M., Condon, W.H., (1971). Geologic Map of the St. Michael Quadrangle, Alaska. U.S. Geological Survey Miscellaneous Geologic Investigations Map I-682, 1:250,000 scale Google Scholar
Hu, F.S., Brubaker, L.B., and Anderson, P.M., (1995). Postglacial vegetation and climate change in the northern Bristol Bay region, southwestern Alaska. Quaternary Research 43, 382–392.Google Scholar
Hultén, E., (1968). Flora of Alaska and Neighboring Territories. Stanford Univ. Press, Stanford.Google Scholar
Joint Federal-State Land Use Planning Commission for Alaska (1973). Major Ecosystems of Alaska Map, scale 1:2,500,000 Google Scholar
Kaufman, D.S., and Hopkins, D.M., (1986). Glacial history of the Seward Peninsula. Hamilton, T.D., Reed, K.M., and Thorson, R.M. Glaciation in Alaska—The Geologic Record. Alaska Geological Society, Anchorage. 51–77.Google Scholar
Leslie, L.D., (1989). Alaska Climate Summaries. Alaska Climate Center Technical Note 5, Arctic Environmental and Data Center. University of Alaska, Anchorage.Google Scholar
Lozhkin, A.V., Anderson, P.M., Vartanyan, S.L., Brown, T.A., Belaya, B.V., and Kotov, A.N., (2001). Late Quaternary paleoenvironments and modern pollen data from Wrangel Island (northern Chukotka). Quaternary Science Reviews 20, 217–233.Google Scholar
Manley, W.F., Kaufman, D.S., and Briner, J.P., (2001). Pleistocene glacial history of the southern Ahklun Mountains, southwestern Alaska. soil development, morphometric, and radiocarbon constraints. Quaternary Science Reviews 20, 353–370.Google Scholar
Mann, D.H., Peteet, D.M., Reanier, R.E., and Kunz, M.L., (2002). Responses of an arctic landscape to Lateglacial and early Holocene climatic changes. the importance of moisture. Quaternary Science Reviews 21, 997–1021.CrossRefGoogle Scholar
Muhs, D.R., Ager, T.A., Been, J., Bradbury, J.P., Dean, W.E., (2003). A late Quaternary record of eolian silt deposition in a maar lake, St. Michael Island, western Alaska. Quaternary Research CrossRefGoogle Scholar
Muhs, D.R., Ager, T.A., and Begét, J.F., (2001). Vegetation and paleoclimate of the last interglacial period, central Alaska. Quaternary Science Reviews 20, 41–61.Google Scholar
Perry, R.K., Fleming, H.S., (1990). Bathymetry of the Arctic Ocean. in Grantz, A., Johnson, L., , J.F., Sweeney, J.F. (Eds.), The Arctic Ocean Region. The Geology of North America, Plate 1. Geological Society of America, Boulder.Google Scholar
Peteet, D.M., and Mann, D.H., (1994). Late-glacial vegetational, tephra, and climatic history of southwestern Kodiak Island, Alaska. Ecoscience 1, 255–267.Google Scholar
Riehle, J., Meyer, C., Ager, T., Kaufman, D., and Ackerman, R., (1987). The Aniakchak tephra deposit, a late Holocene marker horizon in western Alaska. U.S. Geological Survey Circular 998, 19–22.Google Scholar
Sancetta, C., and Robinson, S.W., (1983). Diatom evidence on Wisconsin and Holocene events in the Bering Sea. Quaternary Research 20, 232–245.CrossRefGoogle Scholar
Sharma, G.D., (1979). The Alaskan Shelf. Hydrographic, Sedimentary, and Geochemical Environment. Springer-Verlag, New York.Google Scholar
Viereck, L.A., Little, E.L. Jr. Alaska Trees and Shrubs. (1972). U.S. Department of Agriculture Forest Service Handbook 410, Washington, DC.Google Scholar
Velichko, A.A., Isayeva, L.L., Makeyev, V.M., Matishov, G.G., and Faustova, M.A., (1984). Late Pleistocene glaciation of the arctic shelf, and the reconstruction of Eurasian ice sheets. Velichko, A.A., Wright, H.E. Jr., and Barnosky, C.W. Late Quaternary Environments of the Soviet Union. Univ. of Minnesota Press, Minneapolis. 35–41.Google Scholar
Yurtsev, B.A., (1982). Relics of the xerophyte vegetation of Beringia in northeastern Asia. Hopkins, D.M., Matthews, J.V. Jr., Schweger, C.E., and Young, S.B. Paleoecology of Beringia. Academic Press, New York. 157–177.Google Scholar
Yurtsev, B.A., (2001). The Pleistocene “tundra-steppe” and the productivity paradox. the landscape approach. Quaternary Science Reviews 20, 165–174.Google Scholar