Limnological controls on stable isotope records of late-Holocene palaeoenvironment change in SW Greenland:a paired lake study
Stable isotope records are increasingly being used in palaeoenvironmental studies of Arctic lakes. Here we compare stable isotope and elemental records (delta C-13, delta N-15 C/N) with high resolution XRF-derived geochemical and colour data from low Arctic lakes (SS1220 and SS85) in southwest Green...
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2013
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ftuniaarhuspubl:oai:pure.atira.dk:publications/98a91745-b144-4c2f-927f-20be4b12576d 2023-05-15T14:59:17+02:00 Limnological controls on stable isotope records of late-Holocene palaeoenvironment change in SW Greenland:a paired lake study Olsen, Jesper John Anderson, N. Leng, M.J. 2013 https://pure.au.dk/portal/da/publications/limnological-controls-on-stable-isotope-records-of-lateholocene-palaeoenvironment-change-in-sw-greenland(98a91745-b144-4c2f-927f-20be4b12576d).html https://doi.org/10.1016/j.quascirev.2012.10.043 http://www.scopus.com/inward/record.url?scp=84881550714&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Olsen , J , John Anderson , N & Leng , M J 2013 , ' Limnological controls on stable isotope records of late-Holocene palaeoenvironment change in SW Greenland : a paired lake study ' , Quaternary Science Reviews , vol. 66 , pp. 85-95 . https://doi.org/10.1016/j.quascirev.2012.10.043 Southwest Greenland Holocene Lakes Climate Environment Stable isotopes XRF KANGERLUSSUAQ SONDRE STROMFJORD SEDIMENTARY ORGANIC-MATTER WEST GREENLAND CLIMATE EVOLUTION LACUSTRINE RECORD BAFFIN-ISLAND DISKO-BUGT ICE MARGIN CARBON GEOCHEMISTRY article 2013 ftuniaarhuspubl https://doi.org/10.1016/j.quascirev.2012.10.043 2022-07-13T22:51:01Z Stable isotope records are increasingly being used in palaeoenvironmental studies of Arctic lakes. Here we compare stable isotope and elemental records (delta C-13, delta N-15 C/N) with high resolution XRF-derived geochemical and colour data from low Arctic lakes (SS1220 and SS85) in southwest Greenland. Lake SS1220 sediments are laminated gyttja whereas SS85 consist of homogeneous gyttja, both records cover the last c. 5000 years. delta C-13 and carbon content suggest that organic matter in both lakes is predominantly autochthonous. The C/N variability, ranging between 11 and 15, is interpreted to be a function of nitrogen deficiency which is further supported by delta N-15 values (at SS1220) falling close to atmospheric delta N-15(atmosphere). Although some changes in the geochemical stratigraphies presented here can be related to regional environmental change (i.e. hydrology, effective precipitation, aeolian activity), these effects are filtered through the lake catchments. These changes alter the nutrient supply and hence lake productivity which appear to be the primary controls on the stable isotope data. We suggest that information of past environmental change can only be gained from the stable isotope composition of lake sediments when there is a reasonable understanding of limnological processes, and records may be lake specific. (C) 2012 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Arctic Baffin Island Baffin Disko bugt Greenland Kangerlussuaq Sondre Stromfjord Aarhus University: Research Arctic Baffin Island Greenland Kangerlussuaq ENVELOPE(-55.633,-55.633,72.633,72.633) Quaternary Science Reviews 66 85 95 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Southwest Greenland Holocene Lakes Climate Environment Stable isotopes XRF KANGERLUSSUAQ SONDRE STROMFJORD SEDIMENTARY ORGANIC-MATTER WEST GREENLAND CLIMATE EVOLUTION LACUSTRINE RECORD BAFFIN-ISLAND DISKO-BUGT ICE MARGIN CARBON GEOCHEMISTRY |
spellingShingle |
Southwest Greenland Holocene Lakes Climate Environment Stable isotopes XRF KANGERLUSSUAQ SONDRE STROMFJORD SEDIMENTARY ORGANIC-MATTER WEST GREENLAND CLIMATE EVOLUTION LACUSTRINE RECORD BAFFIN-ISLAND DISKO-BUGT ICE MARGIN CARBON GEOCHEMISTRY Olsen, Jesper John Anderson, N. Leng, M.J. Limnological controls on stable isotope records of late-Holocene palaeoenvironment change in SW Greenland:a paired lake study |
topic_facet |
Southwest Greenland Holocene Lakes Climate Environment Stable isotopes XRF KANGERLUSSUAQ SONDRE STROMFJORD SEDIMENTARY ORGANIC-MATTER WEST GREENLAND CLIMATE EVOLUTION LACUSTRINE RECORD BAFFIN-ISLAND DISKO-BUGT ICE MARGIN CARBON GEOCHEMISTRY |
description |
Stable isotope records are increasingly being used in palaeoenvironmental studies of Arctic lakes. Here we compare stable isotope and elemental records (delta C-13, delta N-15 C/N) with high resolution XRF-derived geochemical and colour data from low Arctic lakes (SS1220 and SS85) in southwest Greenland. Lake SS1220 sediments are laminated gyttja whereas SS85 consist of homogeneous gyttja, both records cover the last c. 5000 years. delta C-13 and carbon content suggest that organic matter in both lakes is predominantly autochthonous. The C/N variability, ranging between 11 and 15, is interpreted to be a function of nitrogen deficiency which is further supported by delta N-15 values (at SS1220) falling close to atmospheric delta N-15(atmosphere). Although some changes in the geochemical stratigraphies presented here can be related to regional environmental change (i.e. hydrology, effective precipitation, aeolian activity), these effects are filtered through the lake catchments. These changes alter the nutrient supply and hence lake productivity which appear to be the primary controls on the stable isotope data. We suggest that information of past environmental change can only be gained from the stable isotope composition of lake sediments when there is a reasonable understanding of limnological processes, and records may be lake specific. (C) 2012 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Olsen, Jesper John Anderson, N. Leng, M.J. |
author_facet |
Olsen, Jesper John Anderson, N. Leng, M.J. |
author_sort |
Olsen, Jesper |
title |
Limnological controls on stable isotope records of late-Holocene palaeoenvironment change in SW Greenland:a paired lake study |
title_short |
Limnological controls on stable isotope records of late-Holocene palaeoenvironment change in SW Greenland:a paired lake study |
title_full |
Limnological controls on stable isotope records of late-Holocene palaeoenvironment change in SW Greenland:a paired lake study |
title_fullStr |
Limnological controls on stable isotope records of late-Holocene palaeoenvironment change in SW Greenland:a paired lake study |
title_full_unstemmed |
Limnological controls on stable isotope records of late-Holocene palaeoenvironment change in SW Greenland:a paired lake study |
title_sort |
limnological controls on stable isotope records of late-holocene palaeoenvironment change in sw greenland:a paired lake study |
publishDate |
2013 |
url |
https://pure.au.dk/portal/da/publications/limnological-controls-on-stable-isotope-records-of-lateholocene-palaeoenvironment-change-in-sw-greenland(98a91745-b144-4c2f-927f-20be4b12576d).html https://doi.org/10.1016/j.quascirev.2012.10.043 http://www.scopus.com/inward/record.url?scp=84881550714&partnerID=8YFLogxK |
long_lat |
ENVELOPE(-55.633,-55.633,72.633,72.633) |
geographic |
Arctic Baffin Island Greenland Kangerlussuaq |
geographic_facet |
Arctic Baffin Island Greenland Kangerlussuaq |
genre |
Arctic Baffin Island Baffin Disko bugt Greenland Kangerlussuaq Sondre Stromfjord |
genre_facet |
Arctic Baffin Island Baffin Disko bugt Greenland Kangerlussuaq Sondre Stromfjord |
op_source |
Olsen , J , John Anderson , N & Leng , M J 2013 , ' Limnological controls on stable isotope records of late-Holocene palaeoenvironment change in SW Greenland : a paired lake study ' , Quaternary Science Reviews , vol. 66 , pp. 85-95 . https://doi.org/10.1016/j.quascirev.2012.10.043 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2012.10.043 |
container_title |
Quaternary Science Reviews |
container_volume |
66 |
container_start_page |
85 |
op_container_end_page |
95 |
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1766331397058854912 |