Vegetation and climate of the northwest coast of North America during the last 500 K.Y. : high–resolution pollen evidence from the northern California margin Public Deposited

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  • Pollen analyses of sediments from Holes 1019C, 1019E, 1020C, and 1020D as well as piston Core EW9504-17 provide continuous, chronostratigraphically controlled proxy vegetation and climate data for coastal northwest North America for the last ~500 k.y. Systematic changes in the representation of the diagnostic components of northern California plant assemblages clearly show orbital-scale variations. Interglacials are all marked by an abrupt increase in alder followed by expansion of lowland oak woodland and redwood forests. Glacials are dominated by montane forest and woodland assemblages. This sequence reflects large-scale climatic controls (e.g., orbital-scale variation in insolation and Northern Hemisphere ice sheets) in western North America over the last five glacial cycles. Regional climatic control (variations in sea-surface conditions) is implied by the differential development of xeric oak and mesic redwood communities.
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  • Heusser, L.E., M. Lyle, A. Mix (2000) Vegetation and climate of the northwest coast of North America during the last 500 k.y.: High-resolution pollen evidence from the northern California Margin. <http://www.coas.oregonstate.edu/facultypages/mix/Heusser_etal_2000_ODP167B_ Pollen.pdf> In: Lyle, M., Koizumi, I., Richter, C. and Moore, T.C. (eds.) /Scientific Results,/ 167, College Station, TX (Ocean Drilling Program) 217-226.
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  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2009-12-17T21:02:31Z (GMT) No. of bitstreams: 1 Heusser_etal_2000_ODP167B_Pollen.pdf: 585219 bytes, checksum: 2ada3ff086aa8743f0aa5664944be915 (MD5)
  • description.provenance : Submitted by Mary Phan (mpscanner@gmail.com) on 2009-12-17T18:20:49Z No. of bitstreams: 1 Heusser_etal_2000_ODP167B_Pollen.pdf: 585219 bytes, checksum: 2ada3ff086aa8743f0aa5664944be915 (MD5)
  • description.provenance : Made available in DSpace on 2009-12-17T21:02:31Z (GMT). No. of bitstreams: 1 Heusser_etal_2000_ODP167B_Pollen.pdf: 585219 bytes, checksum: 2ada3ff086aa8743f0aa5664944be915 (MD5) Previous issue date: 2000

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