Natural variability of benthic foraminiferal assemblages and metal concentrations during the last 150 years in the Ingøydjupet trough, SW Barents Sea.
Submitted manuscript version. Published version available at http://dx.doi.org/10.1016/j.marmicro.2015.09.005 While today the SW Barents Sea is a relatively un-impacted and uncontaminated area, industrial activities related to the petroleum industry are projected to increase in the coming decades. T...
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Online Access: | https://hdl.handle.net/10037/8869 https://doi.org/10.1016/j.marmicro.2015.09.005 |
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ftunivtroemsoe:oai:munin.uit.no:10037/8869 2023-05-15T15:38:24+02:00 Natural variability of benthic foraminiferal assemblages and metal concentrations during the last 150 years in the Ingøydjupet trough, SW Barents Sea. Dijkstra, Noortje Junttila, Juho Husum, Katrine Carroll, JoLynn Hald, Morten 2015-12 https://hdl.handle.net/10037/8869 https://doi.org/10.1016/j.marmicro.2015.09.005 eng eng Elsevier Norges forskningsråd: 223259 Norges forskningsråd: 195160 Marine Micropaleontology 2015, 121:16-31 FRIDAID 1279435 doi:10.1016/j.marmicro.2015.09.005 1872-6186 https://hdl.handle.net/10037/8869 URN:NBN:no-uit_munin_8454 openAccess VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 Benthic foraminifera Anthropogenic impact Natural variability Atlantic Water inflow Heavy metals SW Barents Sea Journal article Tidsskriftartikkel 2015 ftunivtroemsoe https://doi.org/10.1016/j.marmicro.2015.09.005 2021-06-25T17:54:37Z Submitted manuscript version. Published version available at http://dx.doi.org/10.1016/j.marmicro.2015.09.005 While today the SW Barents Sea is a relatively un-impacted and uncontaminated area, industrial activities related to the petroleum industry are projected to increase in the coming decades. This makes the area a valuable natural laboratory to establish pre-impacted baselines as a precursor for future seabed monitoring programs. Here we present benthic foraminiferal assemblages and metal concentrations in four sediment cores from the Ingøydjupet trough, SW Barents Sea, covering approximately the last 150 years. This information supports the application of foraminiferal assemblages as a bio-monitoring tool applicable in high latitudes. At all stations, metal concentrations in the sediment correspond to no effect concentrations. The downcore metal concentrations are mainly attributed to natural variability of the clay fraction and total organic content of the sediments. Agglutinated foraminifera are poorly preserved down-core. Patterns in the calcareous foraminiferal assemblages suggest an enhanced food supply as a result of increased Atlantic Water inflow through the region during the last 150 years. At near-shore stations, the Norwegian Coastal Current additionally influences assemblages. Decadal scale climatic oscillations are indicated by increased calcareous fluxes and are attributed to variability in the food-rich Atlantic Water. This study serves as an important baseline data set prior to increasing industrial activities in the SW Barents Sea, and thereby contributes to a better understanding of natural environmental variability. Article in Journal/Newspaper Barents Sea Ingøydjupet University of Tromsø: Munin Open Research Archive Barents Sea Ingøydjupet ENVELOPE(23.000,23.000,71.417,71.417) Marine Micropaleontology 121 16 31 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 Benthic foraminifera Anthropogenic impact Natural variability Atlantic Water inflow Heavy metals SW Barents Sea |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 Benthic foraminifera Anthropogenic impact Natural variability Atlantic Water inflow Heavy metals SW Barents Sea Dijkstra, Noortje Junttila, Juho Husum, Katrine Carroll, JoLynn Hald, Morten Natural variability of benthic foraminiferal assemblages and metal concentrations during the last 150 years in the Ingøydjupet trough, SW Barents Sea. |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 Benthic foraminifera Anthropogenic impact Natural variability Atlantic Water inflow Heavy metals SW Barents Sea |
description |
Submitted manuscript version. Published version available at http://dx.doi.org/10.1016/j.marmicro.2015.09.005 While today the SW Barents Sea is a relatively un-impacted and uncontaminated area, industrial activities related to the petroleum industry are projected to increase in the coming decades. This makes the area a valuable natural laboratory to establish pre-impacted baselines as a precursor for future seabed monitoring programs. Here we present benthic foraminiferal assemblages and metal concentrations in four sediment cores from the Ingøydjupet trough, SW Barents Sea, covering approximately the last 150 years. This information supports the application of foraminiferal assemblages as a bio-monitoring tool applicable in high latitudes. At all stations, metal concentrations in the sediment correspond to no effect concentrations. The downcore metal concentrations are mainly attributed to natural variability of the clay fraction and total organic content of the sediments. Agglutinated foraminifera are poorly preserved down-core. Patterns in the calcareous foraminiferal assemblages suggest an enhanced food supply as a result of increased Atlantic Water inflow through the region during the last 150 years. At near-shore stations, the Norwegian Coastal Current additionally influences assemblages. Decadal scale climatic oscillations are indicated by increased calcareous fluxes and are attributed to variability in the food-rich Atlantic Water. This study serves as an important baseline data set prior to increasing industrial activities in the SW Barents Sea, and thereby contributes to a better understanding of natural environmental variability. |
format |
Article in Journal/Newspaper |
author |
Dijkstra, Noortje Junttila, Juho Husum, Katrine Carroll, JoLynn Hald, Morten |
author_facet |
Dijkstra, Noortje Junttila, Juho Husum, Katrine Carroll, JoLynn Hald, Morten |
author_sort |
Dijkstra, Noortje |
title |
Natural variability of benthic foraminiferal assemblages and metal concentrations during the last 150 years in the Ingøydjupet trough, SW Barents Sea. |
title_short |
Natural variability of benthic foraminiferal assemblages and metal concentrations during the last 150 years in the Ingøydjupet trough, SW Barents Sea. |
title_full |
Natural variability of benthic foraminiferal assemblages and metal concentrations during the last 150 years in the Ingøydjupet trough, SW Barents Sea. |
title_fullStr |
Natural variability of benthic foraminiferal assemblages and metal concentrations during the last 150 years in the Ingøydjupet trough, SW Barents Sea. |
title_full_unstemmed |
Natural variability of benthic foraminiferal assemblages and metal concentrations during the last 150 years in the Ingøydjupet trough, SW Barents Sea. |
title_sort |
natural variability of benthic foraminiferal assemblages and metal concentrations during the last 150 years in the ingøydjupet trough, sw barents sea. |
publisher |
Elsevier |
publishDate |
2015 |
url |
https://hdl.handle.net/10037/8869 https://doi.org/10.1016/j.marmicro.2015.09.005 |
long_lat |
ENVELOPE(23.000,23.000,71.417,71.417) |
geographic |
Barents Sea Ingøydjupet |
geographic_facet |
Barents Sea Ingøydjupet |
genre |
Barents Sea Ingøydjupet |
genre_facet |
Barents Sea Ingøydjupet |
op_relation |
Norges forskningsråd: 223259 Norges forskningsråd: 195160 Marine Micropaleontology 2015, 121:16-31 FRIDAID 1279435 doi:10.1016/j.marmicro.2015.09.005 1872-6186 https://hdl.handle.net/10037/8869 URN:NBN:no-uit_munin_8454 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1016/j.marmicro.2015.09.005 |
container_title |
Marine Micropaleontology |
container_volume |
121 |
container_start_page |
16 |
op_container_end_page |
31 |
_version_ |
1766369302921871360 |