Sedimentology, biogeochemistry stable isotopes, pollen, plant macrofossils, and diatoms from two sediments cores from the northern Yukon permafrost peatlands (Canada)
Ice-wedge polygon (IWP) mires in the Arctic and Subarctic are extremely vulnerable to climatic and environmental change. We present the results of a multidisciplinary paleoenvironmental study on IWPs in the northern Yukon, Canada. High-resolution laboratory analyses were carried out on a permafrost...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.856781 2023-05-15T15:17:37+02:00 Sedimentology, biogeochemistry stable isotopes, pollen, plant macrofossils, and diatoms from two sediments cores from the northern Yukon permafrost peatlands (Canada) Fritz, Michael Wolter, Juliane Rudaya, Natalia Palagushkina, Olga V Nazarova, Larisa B Obu, Jaroslav Rethemeyer, Janet Lantuit, Hugues Wetterich, Sebastian LATITUDE: 69.579530 * LONGITUDE: -138.957400 * DATE/TIME START: 2012-07-31T00:00:00 * DATE/TIME END: 2012-08-03T00:00:00 2016-01-11 application/zip, 7 datasets https://doi.pangaea.de/10.1594/PANGAEA.856781 https://doi.org/10.1594/PANGAEA.856781 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.856781 https://doi.org/10.1594/PANGAEA.856781 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Fritz, Michael; Wolter, Juliane; Rudaya, Natalia; Palagushkina, Olga V; Nazarova, Larisa B; Obu, Jaroslav; Rethemeyer, Janet; Lantuit, Hugues; Wetterich, Sebastian (2016): Holocene ice-wedge polygon development in northern Yukon permafrost peatlands (Canada). Quaternary Science Reviews, 147, 279-297, https://doi.org/10.1016/j.quascirev.2016.02.008 AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI Dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.856781 https://doi.org/10.1016/j.quascirev.2016.02.008 2023-01-20T07:33:39Z Ice-wedge polygon (IWP) mires in the Arctic and Subarctic are extremely vulnerable to climatic and environmental change. We present the results of a multidisciplinary paleoenvironmental study on IWPs in the northern Yukon, Canada. High-resolution laboratory analyses were carried out on a permafrost core and the overlying seasonally thawed (active) layer, from a low-centered IWP located in a drained lake basin on Herschel Island. In relation to 14 Accelerator Mass Spectrometry (AMS) radiocarbon dates spanning the last 5000 years, we report sedimentary data including grain size distribution and biogeochemical parameters (organic carbon, nitrogen, C/N ratio, d13C), stable water isotopes (d18O, dD), as well as fossil pollen, plant macrofossil and diatom assemblages. Three sediment units (SUs) correspond to the main stages of deposition (1) in a thermokarst lake (SU1: 4950 to 3950 cal yrs BP), (2) during transition from lacustrine to palustrine conditions after lake drainage (SU2: 3950 to 3120 cal yrs BP), and (3) in palustrine conditions in the IWP field that developed after drainage (SU3: 3120 cal yrs BP to AD 2012). The lacustrine phase (pre 3950 cal yrs BP) is characterized by planktonic-benthic and pioneer diatoms species indicating circumneutral waters, and very few plant macrofossils. The pollen record has captured a regional signal of relatively stable vegetation composition and climate for the lacustrine stage of the record until 3950 cal yrs BP. Palustrine conditions with benthic and acidophilic species characterize the peaty shallow-water environments of the low-centered IWP. The transition from lacustrine to palustrine conditions was accompanied by acidification and rapid revegetation of the lake bottom within about 100 years. Since the palustrine phase we consider the pollen record as a local vegetation proxy dominated by the plant communities growing in the IWP. Ice-wedge cracking in water-saturated sediments started immediately after lake drainage at about 3950 cal yrs BP and led to the formation of an ... Dataset Arctic Herschel Herschel Island Ice permafrost Subarctic Thermokarst wedge* Yukon PANGAEA - Data Publisher for Earth & Environmental Science Arctic Canada Herschel Island ENVELOPE(-139.089,-139.089,69.583,69.583) Yukon ENVELOPE(-138.957400,-138.957400,69.579530,69.579530) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI |
spellingShingle |
AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI Fritz, Michael Wolter, Juliane Rudaya, Natalia Palagushkina, Olga V Nazarova, Larisa B Obu, Jaroslav Rethemeyer, Janet Lantuit, Hugues Wetterich, Sebastian Sedimentology, biogeochemistry stable isotopes, pollen, plant macrofossils, and diatoms from two sediments cores from the northern Yukon permafrost peatlands (Canada) |
topic_facet |
AWI_PerDyn Permafrost Research (Periglacial Dynamics) @ AWI |
description |
Ice-wedge polygon (IWP) mires in the Arctic and Subarctic are extremely vulnerable to climatic and environmental change. We present the results of a multidisciplinary paleoenvironmental study on IWPs in the northern Yukon, Canada. High-resolution laboratory analyses were carried out on a permafrost core and the overlying seasonally thawed (active) layer, from a low-centered IWP located in a drained lake basin on Herschel Island. In relation to 14 Accelerator Mass Spectrometry (AMS) radiocarbon dates spanning the last 5000 years, we report sedimentary data including grain size distribution and biogeochemical parameters (organic carbon, nitrogen, C/N ratio, d13C), stable water isotopes (d18O, dD), as well as fossil pollen, plant macrofossil and diatom assemblages. Three sediment units (SUs) correspond to the main stages of deposition (1) in a thermokarst lake (SU1: 4950 to 3950 cal yrs BP), (2) during transition from lacustrine to palustrine conditions after lake drainage (SU2: 3950 to 3120 cal yrs BP), and (3) in palustrine conditions in the IWP field that developed after drainage (SU3: 3120 cal yrs BP to AD 2012). The lacustrine phase (pre 3950 cal yrs BP) is characterized by planktonic-benthic and pioneer diatoms species indicating circumneutral waters, and very few plant macrofossils. The pollen record has captured a regional signal of relatively stable vegetation composition and climate for the lacustrine stage of the record until 3950 cal yrs BP. Palustrine conditions with benthic and acidophilic species characterize the peaty shallow-water environments of the low-centered IWP. The transition from lacustrine to palustrine conditions was accompanied by acidification and rapid revegetation of the lake bottom within about 100 years. Since the palustrine phase we consider the pollen record as a local vegetation proxy dominated by the plant communities growing in the IWP. Ice-wedge cracking in water-saturated sediments started immediately after lake drainage at about 3950 cal yrs BP and led to the formation of an ... |
format |
Dataset |
author |
Fritz, Michael Wolter, Juliane Rudaya, Natalia Palagushkina, Olga V Nazarova, Larisa B Obu, Jaroslav Rethemeyer, Janet Lantuit, Hugues Wetterich, Sebastian |
author_facet |
Fritz, Michael Wolter, Juliane Rudaya, Natalia Palagushkina, Olga V Nazarova, Larisa B Obu, Jaroslav Rethemeyer, Janet Lantuit, Hugues Wetterich, Sebastian |
author_sort |
Fritz, Michael |
title |
Sedimentology, biogeochemistry stable isotopes, pollen, plant macrofossils, and diatoms from two sediments cores from the northern Yukon permafrost peatlands (Canada) |
title_short |
Sedimentology, biogeochemistry stable isotopes, pollen, plant macrofossils, and diatoms from two sediments cores from the northern Yukon permafrost peatlands (Canada) |
title_full |
Sedimentology, biogeochemistry stable isotopes, pollen, plant macrofossils, and diatoms from two sediments cores from the northern Yukon permafrost peatlands (Canada) |
title_fullStr |
Sedimentology, biogeochemistry stable isotopes, pollen, plant macrofossils, and diatoms from two sediments cores from the northern Yukon permafrost peatlands (Canada) |
title_full_unstemmed |
Sedimentology, biogeochemistry stable isotopes, pollen, plant macrofossils, and diatoms from two sediments cores from the northern Yukon permafrost peatlands (Canada) |
title_sort |
sedimentology, biogeochemistry stable isotopes, pollen, plant macrofossils, and diatoms from two sediments cores from the northern yukon permafrost peatlands (canada) |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.856781 https://doi.org/10.1594/PANGAEA.856781 |
op_coverage |
LATITUDE: 69.579530 * LONGITUDE: -138.957400 * DATE/TIME START: 2012-07-31T00:00:00 * DATE/TIME END: 2012-08-03T00:00:00 |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) ENVELOPE(-138.957400,-138.957400,69.579530,69.579530) |
geographic |
Arctic Canada Herschel Island Yukon |
geographic_facet |
Arctic Canada Herschel Island Yukon |
genre |
Arctic Herschel Herschel Island Ice permafrost Subarctic Thermokarst wedge* Yukon |
genre_facet |
Arctic Herschel Herschel Island Ice permafrost Subarctic Thermokarst wedge* Yukon |
op_source |
Supplement to: Fritz, Michael; Wolter, Juliane; Rudaya, Natalia; Palagushkina, Olga V; Nazarova, Larisa B; Obu, Jaroslav; Rethemeyer, Janet; Lantuit, Hugues; Wetterich, Sebastian (2016): Holocene ice-wedge polygon development in northern Yukon permafrost peatlands (Canada). Quaternary Science Reviews, 147, 279-297, https://doi.org/10.1016/j.quascirev.2016.02.008 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.856781 https://doi.org/10.1594/PANGAEA.856781 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.856781 https://doi.org/10.1016/j.quascirev.2016.02.008 |
_version_ |
1766347851629068288 |