Linking large-scale climate variability with Arctica islandica shell growth and geochemistry in northern Norway
The lack of high resolution, geographically diverse proxy records from the marine realm limits our understanding of climate dynamics in the North Atlantic Ocean and Arctic during recent centuries. We investigate the impact of large‐scale climate variability on the marine bivalve, Arctica islandica,...
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ftbatescollege:oai:scarab.bates.edu:faculty_publications-1076 2023-05-15T15:00:45+02:00 Linking large-scale climate variability with Arctica islandica shell growth and geochemistry in northern Norway Mette, Madelyn J. Wanamaker, Alan D., Jr. Carroll, Michael L. Ambrose, William G., Jr. Retelle, Michael 2016-01-01T08:00:00Z https://scarab.bates.edu/faculty_publications/72 unknown SCARAB https://scarab.bates.edu/faculty_publications/72 All Faculty Scholarship atlantic multidecadal oscillation bivalve climate variation ecosystem dynamics geochemistry geochronology growth North Atlantic Oscillation oceanic current oxygen isotope paleoclimate proxy climate control sea surface temperature shell text 2016 ftbatescollege 2022-03-22T09:19:48Z The lack of high resolution, geographically diverse proxy records from the marine realm limits our understanding of climate dynamics in the North Atlantic Ocean and Arctic during recent centuries. We investigate the impact of large‐scale climate variability on the marine bivalve, Arctica islandica, (Linnaeus 1767) from northern Norway (71°N). We evaluate the use of annual shell growth and geochemical records as proxies for North Atlantic and Arctic climate variability over centennial scales by developing a continuous, 113‐yr master shell growth chronology and an oxygen isotope record (δ18O) from live caught shell material. A relatively strong inverse relationship is observed between both the shell growth and isotopic proxies and large‐scale North Atlantic sea surface temperatures in modern times (r = −0.54 to −0.90; p < 0.05). This relationship is strengthened when using a combined shell growth/oxygen isotope Multiproxy Index (r = −0.72 to −0.90; p <0.01). The regional spatial pattern of correlation resembles that of the North Atlantic Current as it bifurcates around 55°N, indicating that large‐scale ocean surface current dynamics play an important role in regulating local ecosystem processes and thus shell growth in northern Norway. A combined proxy index created using multiple linear regression exhibits a relatively strong and time‐stable relationship with the Atlantic Multidecadal Oscillation (AMO; r = −0.622; p < 0.001) since AD 1900. Variability in the relationship between the shell based records and the North Atlantic Oscillation coincide with variations in the AMO index, suggesting a complex relationship between atmospheric forcing on hydrographic variability and ecosystem dynamics in northern Norway. Text Arctic Arctica islandica north atlantic current North Atlantic North Atlantic oscillation Northern Norway Bates College: SCARAB (Scholarly Communication and Research at Bates) Arctic Norway |
institution |
Open Polar |
collection |
Bates College: SCARAB (Scholarly Communication and Research at Bates) |
op_collection_id |
ftbatescollege |
language |
unknown |
topic |
atlantic multidecadal oscillation bivalve climate variation ecosystem dynamics geochemistry geochronology growth North Atlantic Oscillation oceanic current oxygen isotope paleoclimate proxy climate control sea surface temperature shell |
spellingShingle |
atlantic multidecadal oscillation bivalve climate variation ecosystem dynamics geochemistry geochronology growth North Atlantic Oscillation oceanic current oxygen isotope paleoclimate proxy climate control sea surface temperature shell Mette, Madelyn J. Wanamaker, Alan D., Jr. Carroll, Michael L. Ambrose, William G., Jr. Retelle, Michael Linking large-scale climate variability with Arctica islandica shell growth and geochemistry in northern Norway |
topic_facet |
atlantic multidecadal oscillation bivalve climate variation ecosystem dynamics geochemistry geochronology growth North Atlantic Oscillation oceanic current oxygen isotope paleoclimate proxy climate control sea surface temperature shell |
description |
The lack of high resolution, geographically diverse proxy records from the marine realm limits our understanding of climate dynamics in the North Atlantic Ocean and Arctic during recent centuries. We investigate the impact of large‐scale climate variability on the marine bivalve, Arctica islandica, (Linnaeus 1767) from northern Norway (71°N). We evaluate the use of annual shell growth and geochemical records as proxies for North Atlantic and Arctic climate variability over centennial scales by developing a continuous, 113‐yr master shell growth chronology and an oxygen isotope record (δ18O) from live caught shell material. A relatively strong inverse relationship is observed between both the shell growth and isotopic proxies and large‐scale North Atlantic sea surface temperatures in modern times (r = −0.54 to −0.90; p < 0.05). This relationship is strengthened when using a combined shell growth/oxygen isotope Multiproxy Index (r = −0.72 to −0.90; p <0.01). The regional spatial pattern of correlation resembles that of the North Atlantic Current as it bifurcates around 55°N, indicating that large‐scale ocean surface current dynamics play an important role in regulating local ecosystem processes and thus shell growth in northern Norway. A combined proxy index created using multiple linear regression exhibits a relatively strong and time‐stable relationship with the Atlantic Multidecadal Oscillation (AMO; r = −0.622; p < 0.001) since AD 1900. Variability in the relationship between the shell based records and the North Atlantic Oscillation coincide with variations in the AMO index, suggesting a complex relationship between atmospheric forcing on hydrographic variability and ecosystem dynamics in northern Norway. |
format |
Text |
author |
Mette, Madelyn J. Wanamaker, Alan D., Jr. Carroll, Michael L. Ambrose, William G., Jr. Retelle, Michael |
author_facet |
Mette, Madelyn J. Wanamaker, Alan D., Jr. Carroll, Michael L. Ambrose, William G., Jr. Retelle, Michael |
author_sort |
Mette, Madelyn J. |
title |
Linking large-scale climate variability with Arctica islandica shell growth and geochemistry in northern Norway |
title_short |
Linking large-scale climate variability with Arctica islandica shell growth and geochemistry in northern Norway |
title_full |
Linking large-scale climate variability with Arctica islandica shell growth and geochemistry in northern Norway |
title_fullStr |
Linking large-scale climate variability with Arctica islandica shell growth and geochemistry in northern Norway |
title_full_unstemmed |
Linking large-scale climate variability with Arctica islandica shell growth and geochemistry in northern Norway |
title_sort |
linking large-scale climate variability with arctica islandica shell growth and geochemistry in northern norway |
publisher |
SCARAB |
publishDate |
2016 |
url |
https://scarab.bates.edu/faculty_publications/72 |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic Arctica islandica north atlantic current North Atlantic North Atlantic oscillation Northern Norway |
genre_facet |
Arctic Arctica islandica north atlantic current North Atlantic North Atlantic oscillation Northern Norway |
op_source |
All Faculty Scholarship |
op_relation |
https://scarab.bates.edu/faculty_publications/72 |
_version_ |
1766332816526671872 |