Palaeoceanographic changes in Hornsund Fjord (Spitsbergen, Svalbard) over the last millennium: new insights from ancient DNA
International audience This paper presents a reconstruction of climate-driven environmental changes over the last millennium in Hornsund Fjord (Svalbard), based on sedimentological and micropalaeontological records. Our palaeo-investigation was supported by an analysis of foraminiferal ancient DNA (...
Published in: | Climate of the Past |
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Main Authors: | , , , , , |
Other Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2016
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Subjects: | |
Online Access: | https://hal.sorbonne-universite.fr/hal-01359947 https://hal.sorbonne-universite.fr/hal-01359947/document https://hal.sorbonne-universite.fr/hal-01359947/file/cp-12-1459-2016.pdf https://doi.org/10.5194/cp-12-1459-2016 |
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ftccsdartic:oai:HAL:hal-01359947v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Pawłowska, Joanna Zajaczkowski, Marek Lacka, Magdalena Lejzerowicz, Franck Esling, Philippe Pawlowski, Jan Palaeoceanographic changes in Hornsund Fjord (Spitsbergen, Svalbard) over the last millennium: new insights from ancient DNA |
topic_facet |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience This paper presents a reconstruction of climate-driven environmental changes over the last millennium in Hornsund Fjord (Svalbard), based on sedimentological and micropalaeontological records. Our palaeo-investigation was supported by an analysis of foraminiferal ancient DNA (aDNA), focusing on the non-fossilized monothalamous species. The main climatic fluctuations during the last millennium were the Medieval Warm Period (MWP, AD 1000– 1600), the Little Ice Age (LIA, AD 1600–1900) and the modern warming (MW, AD 1900 to present). Our study indicates that the environmental conditions in Hornsund during the MWP and the early LIA (before ∼ AD 1800) were relatively stable. The beginning of the LIA (∼ AD 1600) was poorly evidenced by the micropalaeontological record but was well marked in the aDNA data by an increased proportion of monothalamous foraminifera, especially Bathysiphon sp. The early LIA (∼ 1600 to ∼ AD 1800) was marked by an increase in the abundance of sequences of Hippocrepinella hirudinea and Cedhagenia saltatus. In the late LIA (after ∼ AD 1800), the conditions in the fjord became glacier-proximal and were characterized by increased meltwater out-flows, high sedimentation and a high calving rate. This coincided with an increase in the percentages of sequences of Micrometula sp. and Vellaria pellucidus. During the MW, the major glacier fronts retreated rapidly to the inner bays, which limited the iceberg discharge to the fjord's centre and caused a shift in the foraminiferal community that was reflected in both the fossil and aDNA records. The palaeoceanographic changes in the Hornsund fjord over the last millennium were driven mainly by the inflow of shelf-originated water masses and glacial activity. However , the environmental changes were poorly evidenced in the micropalaeontological record, but they were well documented in our aDNA data. We considerably increased the number of potential proxy species by including monothala-mous foraminifera in the palaeoecological studies. |
author2 |
Polska Akademia Nauk = Polish Academy of Sciences (PAN) University of Geneva Switzerland Sciences et Technologies de la Musique et du Son (STMS) Institut de Recherche et Coordination Acoustique/Musique (IRCAM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Pawłowska, Joanna Zajaczkowski, Marek Lacka, Magdalena Lejzerowicz, Franck Esling, Philippe Pawlowski, Jan |
author_facet |
Pawłowska, Joanna Zajaczkowski, Marek Lacka, Magdalena Lejzerowicz, Franck Esling, Philippe Pawlowski, Jan |
author_sort |
Pawłowska, Joanna |
title |
Palaeoceanographic changes in Hornsund Fjord (Spitsbergen, Svalbard) over the last millennium: new insights from ancient DNA |
title_short |
Palaeoceanographic changes in Hornsund Fjord (Spitsbergen, Svalbard) over the last millennium: new insights from ancient DNA |
title_full |
Palaeoceanographic changes in Hornsund Fjord (Spitsbergen, Svalbard) over the last millennium: new insights from ancient DNA |
title_fullStr |
Palaeoceanographic changes in Hornsund Fjord (Spitsbergen, Svalbard) over the last millennium: new insights from ancient DNA |
title_full_unstemmed |
Palaeoceanographic changes in Hornsund Fjord (Spitsbergen, Svalbard) over the last millennium: new insights from ancient DNA |
title_sort |
palaeoceanographic changes in hornsund fjord (spitsbergen, svalbard) over the last millennium: new insights from ancient dna |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.sorbonne-universite.fr/hal-01359947 https://hal.sorbonne-universite.fr/hal-01359947/document https://hal.sorbonne-universite.fr/hal-01359947/file/cp-12-1459-2016.pdf https://doi.org/10.5194/cp-12-1459-2016 |
long_lat |
ENVELOPE(15.865,15.865,76.979,76.979) |
geographic |
Hornsund Svalbard |
geographic_facet |
Hornsund Svalbard |
genre |
glacier Hornsund Svalbard Spitsbergen |
genre_facet |
glacier Hornsund Svalbard Spitsbergen |
op_source |
ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.sorbonne-universite.fr/hal-01359947 Climate of the Past, European Geosciences Union (EGU), 2016, 12 (7), pp.1459-1472. ⟨10.5194/cp-12-1459-2016⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-12-1459-2016 hal-01359947 https://hal.sorbonne-universite.fr/hal-01359947 https://hal.sorbonne-universite.fr/hal-01359947/document https://hal.sorbonne-universite.fr/hal-01359947/file/cp-12-1459-2016.pdf doi:10.5194/cp-12-1459-2016 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/cp-12-1459-2016 |
container_title |
Climate of the Past |
container_volume |
12 |
container_issue |
7 |
container_start_page |
1459 |
op_container_end_page |
1472 |
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1766010230280290304 |
spelling |
ftccsdartic:oai:HAL:hal-01359947v1 2023-05-15T16:22:16+02:00 Palaeoceanographic changes in Hornsund Fjord (Spitsbergen, Svalbard) over the last millennium: new insights from ancient DNA Pawłowska, Joanna Zajaczkowski, Marek Lacka, Magdalena Lejzerowicz, Franck Esling, Philippe Pawlowski, Jan Polska Akademia Nauk = Polish Academy of Sciences (PAN) University of Geneva Switzerland Sciences et Technologies de la Musique et du Son (STMS) Institut de Recherche et Coordination Acoustique/Musique (IRCAM)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) 2016 https://hal.sorbonne-universite.fr/hal-01359947 https://hal.sorbonne-universite.fr/hal-01359947/document https://hal.sorbonne-universite.fr/hal-01359947/file/cp-12-1459-2016.pdf https://doi.org/10.5194/cp-12-1459-2016 en eng HAL CCSD European Geosciences Union (EGU) info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-12-1459-2016 hal-01359947 https://hal.sorbonne-universite.fr/hal-01359947 https://hal.sorbonne-universite.fr/hal-01359947/document https://hal.sorbonne-universite.fr/hal-01359947/file/cp-12-1459-2016.pdf doi:10.5194/cp-12-1459-2016 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1814-9324 EISSN: 1814-9332 Climate of the Past https://hal.sorbonne-universite.fr/hal-01359947 Climate of the Past, European Geosciences Union (EGU), 2016, 12 (7), pp.1459-1472. ⟨10.5194/cp-12-1459-2016⟩ [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2016 ftccsdartic https://doi.org/10.5194/cp-12-1459-2016 2021-07-17T23:03:17Z International audience This paper presents a reconstruction of climate-driven environmental changes over the last millennium in Hornsund Fjord (Svalbard), based on sedimentological and micropalaeontological records. Our palaeo-investigation was supported by an analysis of foraminiferal ancient DNA (aDNA), focusing on the non-fossilized monothalamous species. The main climatic fluctuations during the last millennium were the Medieval Warm Period (MWP, AD 1000– 1600), the Little Ice Age (LIA, AD 1600–1900) and the modern warming (MW, AD 1900 to present). Our study indicates that the environmental conditions in Hornsund during the MWP and the early LIA (before ∼ AD 1800) were relatively stable. The beginning of the LIA (∼ AD 1600) was poorly evidenced by the micropalaeontological record but was well marked in the aDNA data by an increased proportion of monothalamous foraminifera, especially Bathysiphon sp. The early LIA (∼ 1600 to ∼ AD 1800) was marked by an increase in the abundance of sequences of Hippocrepinella hirudinea and Cedhagenia saltatus. In the late LIA (after ∼ AD 1800), the conditions in the fjord became glacier-proximal and were characterized by increased meltwater out-flows, high sedimentation and a high calving rate. This coincided with an increase in the percentages of sequences of Micrometula sp. and Vellaria pellucidus. During the MW, the major glacier fronts retreated rapidly to the inner bays, which limited the iceberg discharge to the fjord's centre and caused a shift in the foraminiferal community that was reflected in both the fossil and aDNA records. The palaeoceanographic changes in the Hornsund fjord over the last millennium were driven mainly by the inflow of shelf-originated water masses and glacial activity. However , the environmental changes were poorly evidenced in the micropalaeontological record, but they were well documented in our aDNA data. We considerably increased the number of potential proxy species by including monothala-mous foraminifera in the palaeoecological studies. Article in Journal/Newspaper glacier Hornsund Svalbard Spitsbergen Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Hornsund ENVELOPE(15.865,15.865,76.979,76.979) Svalbard Climate of the Past 12 7 1459 1472 |