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Paleoecology Data in Southwest Yukon

Metadata

File Identifier: 11912_iso.xml
Metadata Language: eng; CAN
: utf8
Resource Type: Dataset
Responsible Party: Individual Name: Polar Data Catalogue Organisation Name: Canadian Cryospheric Information Network Role: Point Of Contact Contact Info: Voice: (519) 888-4567 x32689 Street Address: 200 University Avenue West, University of Waterloo City: Waterloo Province/State: Ontario Postal Code/ZIP: N2L 3G1 Country: Canada E-Mail Address: pdc@uwaterloo.ca
Metadata Date: 2014-04-28
Metadata Standard Name: North American Profile of ISO 19115:2003
Metadata Standard Version: 2009-01-01

Data Identification

Abstract: Field work was completed in July 2013 and included drillings (+10m) and in situ characterisation (geomorphology and phytogeography). Pleistocene-Holocene transition interval will be determined by radiocarbon dating (alternative techniques for older sediments) and will increase the chronostratigraphic resolution of the research. We will identify the vegetation assemblages and dynamics associated to the relic tundra-steppe biome using pollen analysis. Palynological record will be used to reconstruct the climate (temperature, precipitation) prevailing during the late Pleistocene-early Holocene using transfer functions adapted to this particular environment without modern analogue. The different peat layers that are found throughout the profile will also allow testate amoebae analyses that will be useful to reconstruct past hydrological conditions. The carbon content of the sediments will be determined by dry combustion on an elemental analyzer and the carbon accumulation rates will be established based on the chronostratigraphy of the sequence.
Purpose: The Beaver Creek area yedoma in Yukon (62°23′N, 140°53′W) is unique as it is the only yedoma deposit known in that part of Beringia. This sequence offers a unique opportunity to study the vegetation composition and dynamics of the now extinct tundra-steppe biome of Beringia, which is known to have acted as a refugium for boreal trees and shrubs during the Pleistocene. Many questions remain about the environmental history of Beringia, especially the extent and dynamics of the easternmost limit of the region. The Beaver Creek sequence will also allow the regional reconstruction of the climate over the last ice age and early Holocene, and to explore the conditions that favored carbon accumulation in yedoma sediments.
Language: eng; CAN
Citation:
Contact Info: Title: Paleoecology Data in Southwest Yukon Date: Date: 2014-04-28 Date Type: Publication Date Individual Name: Daniel Fortier Role: Principal Investigator Individual Name: Lyna Lapointe Elmrabti Role: Individual Name: Daniel Fortier Role: Point Of Contact Individual Name: Anne de Vernal Role: Individual Name: Julie Talbot Role:
Point Of Contact:
Individual Name: Polar Data Catalogue Organisation Name: Canadian Cryospheric Information Network Role: Point Of Contact Contact Info: Voice: (519) 888-4567 x32689 Street Address: 200 University Avenue West, University of Waterloo City: Waterloo Province/State: Ontario Postal Code/ZIP: N2L 3G1 Country: Canada E-Mail Address: pdc@uwaterloo.ca Online Resource: polardata.ca
Topic Category: Environment and Conservation
Keyword Collection:
Keyword: Carbon Keyword: Deglaciation Keyword: Holocene Keyword: Ice wedges Keyword: Paleoclimate Keyword: Paleoecology Keyword: Paleo-indicators Keyword: Plant succession Keyword: Yukon Associated Thesaurus: Polar Data Catalogue Thesaurus (Canada) Keyword: Beaver Creek, Yukon
Spatial Extent:
West Bounding Longitude: -140.84 East Bounding Longitude: -140.83 North Bounding Latitude: 62.34 South Bounding Latitude: 62.33
Legal Constraints:
Access Constraints: Other Restrictions Use Constraints: Other Restrictions Other Constraints: Terms of Use of the Polar Data Catalogue: https://www.polardata.ca/pdcinput/public/termsofuse

Distribution

Distribution Format:
Format Name: Digital file Format Version: 1.0
Distributor:
Distributor Contact: Individual Name: Polar Data Catalogue Organisation Name: Canadian Cryospheric Information Network Role: Distributor Contact Info: Voice: (519) 888-4567 x32689 Street Address: 200 University Avenue West, University of Waterloo City: Waterloo Province/State: Ontario Postal Code/ZIP: N2L 3G1 Country: Canada E-Mail Address: pdc@uwaterloo.ca

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