Bacterial Lipids in Holocene Sediments from Baffin Island: Insights into temperature reconstructions in Arctic Environments
This research study assesses the validity of bacterial branched glycerol dialkyl glycerol tetraethers (brGDGTs) for temperature reconstructions in Arctic settings from a sediment core extracted from Brother of Fog lake, Baffin Island. The distribution of brGDGTs in lake sediments have been shown to...
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ftunicolboulder:oai:scholar.colorado.edu:honr_theses-3152 2023-05-15T14:49:36+02:00 Bacterial Lipids in Holocene Sediments from Baffin Island: Insights into temperature reconstructions in Arctic Environments Camuti, Lucy 2019-01-01T08:00:00Z application/pdf https://scholar.colorado.edu/honr_theses/1866 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=3152&context=honr_theses unknown CU Scholar https://scholar.colorado.edu/honr_theses/1866 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=3152&context=honr_theses Undergraduate Honors Theses Paleoclimate Arctic Temperature Proxy Baffin Island Anoxia Environmental Education Geochemistry Geology Soil Science text 2019 ftunicolboulder 2019-04-26T23:29:43Z This research study assesses the validity of bacterial branched glycerol dialkyl glycerol tetraethers (brGDGTs) for temperature reconstructions in Arctic settings from a sediment core extracted from Brother of Fog lake, Baffin Island. The distribution of brGDGTs in lake sediments have been shown to correlate with mean annual air temperature (MAAT) and serve as a proxy for paleotemperature reconstructions. This study aims to reconstruct temperature variability over the Holocene (~11500 years) and the applicability of this proxy for high latitude lakes. The results show a large bias within the brGDGT-inferred temperature reconstruction when applying the Russell et al. 2018 calibration. Due to the unintended nature of the temperature reconstruction, multiple confounding variables were accounted for to understand the environmental influences on the formation of brGDGTs. Overall, this research shows the potential effects that anoxic water columns have on brGDGT temperature signals from lacustrine sediment cores extracted from Brother of Fog Lake in Baffin Island. Text Arctic Baffin Island Baffin University of Colorado, Boulder: CU Scholar Arctic Baffin Island |
institution |
Open Polar |
collection |
University of Colorado, Boulder: CU Scholar |
op_collection_id |
ftunicolboulder |
language |
unknown |
topic |
Paleoclimate Arctic Temperature Proxy Baffin Island Anoxia Environmental Education Geochemistry Geology Soil Science |
spellingShingle |
Paleoclimate Arctic Temperature Proxy Baffin Island Anoxia Environmental Education Geochemistry Geology Soil Science Camuti, Lucy Bacterial Lipids in Holocene Sediments from Baffin Island: Insights into temperature reconstructions in Arctic Environments |
topic_facet |
Paleoclimate Arctic Temperature Proxy Baffin Island Anoxia Environmental Education Geochemistry Geology Soil Science |
description |
This research study assesses the validity of bacterial branched glycerol dialkyl glycerol tetraethers (brGDGTs) for temperature reconstructions in Arctic settings from a sediment core extracted from Brother of Fog lake, Baffin Island. The distribution of brGDGTs in lake sediments have been shown to correlate with mean annual air temperature (MAAT) and serve as a proxy for paleotemperature reconstructions. This study aims to reconstruct temperature variability over the Holocene (~11500 years) and the applicability of this proxy for high latitude lakes. The results show a large bias within the brGDGT-inferred temperature reconstruction when applying the Russell et al. 2018 calibration. Due to the unintended nature of the temperature reconstruction, multiple confounding variables were accounted for to understand the environmental influences on the formation of brGDGTs. Overall, this research shows the potential effects that anoxic water columns have on brGDGT temperature signals from lacustrine sediment cores extracted from Brother of Fog Lake in Baffin Island. |
format |
Text |
author |
Camuti, Lucy |
author_facet |
Camuti, Lucy |
author_sort |
Camuti, Lucy |
title |
Bacterial Lipids in Holocene Sediments from Baffin Island: Insights into temperature reconstructions in Arctic Environments |
title_short |
Bacterial Lipids in Holocene Sediments from Baffin Island: Insights into temperature reconstructions in Arctic Environments |
title_full |
Bacterial Lipids in Holocene Sediments from Baffin Island: Insights into temperature reconstructions in Arctic Environments |
title_fullStr |
Bacterial Lipids in Holocene Sediments from Baffin Island: Insights into temperature reconstructions in Arctic Environments |
title_full_unstemmed |
Bacterial Lipids in Holocene Sediments from Baffin Island: Insights into temperature reconstructions in Arctic Environments |
title_sort |
bacterial lipids in holocene sediments from baffin island: insights into temperature reconstructions in arctic environments |
publisher |
CU Scholar |
publishDate |
2019 |
url |
https://scholar.colorado.edu/honr_theses/1866 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=3152&context=honr_theses |
geographic |
Arctic Baffin Island |
geographic_facet |
Arctic Baffin Island |
genre |
Arctic Baffin Island Baffin |
genre_facet |
Arctic Baffin Island Baffin |
op_source |
Undergraduate Honors Theses |
op_relation |
https://scholar.colorado.edu/honr_theses/1866 https://scholar.colorado.edu/cgi/viewcontent.cgi?article=3152&context=honr_theses |
_version_ |
1766320688529932288 |