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- Title
Plant Macrofossils Associated with an Early Holocene Beaver Dam in Interior Alaska.
- Authors
Robinson, Simon; Beaudoin, Alwynne B.; Froese, Duane G.; Doubt, Jennifer; Clague, John J.
- Abstract
Dynamic climate changes and expansion of new biomes characterize the late Pleistocene-early Holocene of eastern Beringia. Analysis of plant macrofossils from an early Holocene (ca. 9 300 14C yrs BP) beaver dam in central Alaska provides insight into the local environment and vegetation. The plant macrofossil assemblage comprises remains of trees and shrubs, graminoids, and forbs, including Betula sp., Carex sp., Rubus sp., Eleocharis sp., Scirpus sp., Potamogeton sp., Najas flexilis and Typha latifolia, indicative of standing water of a beaver pond. Bryophytes from the beaver dam include Warnstorfia spp. and Drepanocladus aduncus, suggesting shallow, stagnant, or slow-moving water. The presence of Najas flexilis, Typha latifolia, and modern beaver (Castor canadensis) suggest that central Alaska had a warmer climate during the early Holocene.
- Subjects
BERING Land Bridge; CLIMATE change; BIOTIC communities; PLANT chemical analysis; TYPHA latifolia; AMERICAN beaver; HOLOCENE paleoceanography; VEGETATION &; climate; NAJAS flexilis
- Publication
Arctic Journal, 2007, Vol 60, Issue 4, p430
- ISSN
0004-0843
- Publication type
Article