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Tundra and boreal forest of interior Alaska during terminal MIS 6 and MIS 5e

Tundra and boreal forest of interior Alaska during terminal MIS 6 and MIS 5e
Tundra and boreal forest of interior Alaska during terminal MIS 6 and MIS 5e
Two sites within the boreal forest of interior
Alaska shed light on the climate and vegetation of terminal
marine isotope stage (MIS) 6 (ca. 140–130 kyr ago) and
MIS 5e (125–116 kyr ago). The Birch Creek and Koyukuk
localities are river-cut exposures with sediments dating
from the penultimate glaciation (at least) to the present.
Plant macrofossils, pollen, and beetles were analyzed at
these sites. Terminal MIS 6-aged samples indicate a cooler
than modern climate and the presence of shrub tundra.
During MIS 5e, boreal forest grew at the sites and temperatures
were similar to modern times. However, the
forest may also have been more mesic than today, as
indicated by relatively abundant ferns. Winters may have
been warmer than today, as suggested by beetle-based
climatic reconstructions as well as the presence of two
extralimital taxa that today live in regions where winter
temperatures are up to 15 ?C warmer than at the site
localities
Alaska, boreal, MIS 6, MIS 5e, palaeovegetation, coleopteran, palaeoclimate
0939-6314
177-193
Bigelow, N.H.
fa1154ff-e096-4c06-a361-3a08374ed6ba
Edwards, M.E.
4b6a3389-f3a4-4933-b8fd-acdfef72200e
Elias, S.E.
349550ca-6b68-4645-8954-72bff300c3cc
Hamilton, T.D.
e1117ae3-947b-4c38-98d2-8b2bcd7c46a9
Schweger, C.E.
59e07b06-1fc9-455c-92a8-75c1bb8e06ae
Bigelow, N.H.
fa1154ff-e096-4c06-a361-3a08374ed6ba
Edwards, M.E.
4b6a3389-f3a4-4933-b8fd-acdfef72200e
Elias, S.E.
349550ca-6b68-4645-8954-72bff300c3cc
Hamilton, T.D.
e1117ae3-947b-4c38-98d2-8b2bcd7c46a9
Schweger, C.E.
59e07b06-1fc9-455c-92a8-75c1bb8e06ae

Bigelow, N.H., Edwards, M.E., Elias, S.E., Hamilton, T.D. and Schweger, C.E. (2013) Tundra and boreal forest of interior Alaska during terminal MIS 6 and MIS 5e. Vegetation History and Archaeobotany, 23 (3), 177-193. (doi:10.1007/s00334-013-0425-z). (In Press)

Record type: Article

Abstract

Two sites within the boreal forest of interior
Alaska shed light on the climate and vegetation of terminal
marine isotope stage (MIS) 6 (ca. 140–130 kyr ago) and
MIS 5e (125–116 kyr ago). The Birch Creek and Koyukuk
localities are river-cut exposures with sediments dating
from the penultimate glaciation (at least) to the present.
Plant macrofossils, pollen, and beetles were analyzed at
these sites. Terminal MIS 6-aged samples indicate a cooler
than modern climate and the presence of shrub tundra.
During MIS 5e, boreal forest grew at the sites and temperatures
were similar to modern times. However, the
forest may also have been more mesic than today, as
indicated by relatively abundant ferns. Winters may have
been warmer than today, as suggested by beetle-based
climatic reconstructions as well as the presence of two
extralimital taxa that today live in regions where winter
temperatures are up to 15 ?C warmer than at the site
localities

Full text not available from this repository.

More information

Accepted/In Press date: 16 December 2013
Keywords: Alaska, boreal, MIS 6, MIS 5e, palaeovegetation, coleopteran, palaeoclimate
Organisations: Palaeoenvironment Laboratory (PLUS)

Identifiers

Local EPrints ID: 380366
URI: https://eprints.soton.ac.uk/id/eprint/380366
ISSN: 0939-6314
PURE UUID: 6bcb9dba-420b-46fc-b5df-96b6f9f227d3
ORCID for M.E. Edwards: ORCID iD orcid.org/0000-0002-3490-6682

Catalogue record

Date deposited: 09 Sep 2015 13:32
Last modified: 20 Jul 2019 01:03

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Contributors

Author: N.H. Bigelow
Author: M.E. Edwards ORCID iD
Author: S.E. Elias
Author: T.D. Hamilton
Author: C.E. Schweger

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