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| Main Authors: | , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2010
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.809524 |
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| _version_ | 1867169081584517120 |
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| author | Forest, Alexandre Wassmann, Paul Slagstad, Dag Bauerfeind, Eduard Nöthig, Eva-Maria Klages, Michael |
| author_facet | Forest, Alexandre Wassmann, Paul Slagstad, Dag Bauerfeind, Eduard Nöthig, Eva-Maria Klages, Michael |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The lack of extended dataset has so far prevented an inclusive understanding of the long-term relationships between primary production (PP) and vertical export in the Arctic Ocean. It is urgent to investigate these connections as Arctic ecosystems are on the verge of climate-related shifts, which could be caused by the combined effects of increase in Pacific and Atlantic inflow, climate warming, and sea ice decline. For a period of 6 years we investigated the degree of coupling between PP and export by making use of modelled PP rates and vertical particle fluxes collected with sediment traps moored at ~300 m depth in the eastern Fram Strait. Our analyses indicate that total and new simulated PP averaged for different areas centered on the mooring location (5-200 km radius) explain at best 20-44% of the observed biogenic particle fluxes at 300 m, when applying extended time-lags (55-90 days) between PP and vertical fluxes. Based on this phasing, we define a conceptual framework that presents the temporal dimension as a prime determinant of the maximum strength of the PP-export coupling at a given depth. Our results support that planktonic food webs in the Fram Strait process heavily biogenic material in the epipelagic zone, but we further suggest that Atlantic-Arctic water interactions induce a particular ecological setting responsible for the extended turn-over. In conclusion, we hypothesize that global warming could promote a transition toward a more retentive ecosystem in the Fram Strait region despite the likely increase of pelagic PP in the Arctic Ocean. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_809524 |
| institution | PANGAEA |
| language | en |
| publishDate | 2010 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Annual gross and new primary production rates obtained for areas centered on the AWI-HAUSGARTEN mooring (2000-2005) Forest, Alexandre Wassmann, Paul Slagstad, Dag Bauerfeind, Eduard Nöthig, Eva-Maria Klages, Michael ARK-XVI/2; AWI; FEVI1; International Polar Year (2007-2008); IPY; modelled; Mooring (long time); MOORY; North Greenland Sea; Polarstern; Primary production of carbon, standard deviation; Primary production of carbon per area, yearly; PS57; PS57/273-1, HGIV; Radius; Sampling date The lack of extended dataset has so far prevented an inclusive understanding of the long-term relationships between primary production (PP) and vertical export in the Arctic Ocean. It is urgent to investigate these connections as Arctic ecosystems are on the verge of climate-related shifts, which could be caused by the combined effects of increase in Pacific and Atlantic inflow, climate warming, and sea ice decline. For a period of 6 years we investigated the degree of coupling between PP and export by making use of modelled PP rates and vertical particle fluxes collected with sediment traps moored at ~300 m depth in the eastern Fram Strait. Our analyses indicate that total and new simulated PP averaged for different areas centered on the mooring location (5-200 km radius) explain at best 20-44% of the observed biogenic particle fluxes at 300 m, when applying extended time-lags (55-90 days) between PP and vertical fluxes. Based on this phasing, we define a conceptual framework that presents the temporal dimension as a prime determinant of the maximum strength of the PP-export coupling at a given depth. Our results support that planktonic food webs in the Fram Strait process heavily biogenic material in the epipelagic zone, but we further suggest that Atlantic-Arctic water interactions induce a particular ecological setting responsible for the extended turn-over. In conclusion, we hypothesize that global warming could promote a transition toward a more retentive ecosystem in the Fram Strait region despite the likely increase of pelagic PP in the Arctic Ocean. |
| title | (Table 1) Annual gross and new primary production rates obtained for areas centered on the AWI-HAUSGARTEN mooring (2000-2005) |
| topic | ARK-XVI/2; AWI; FEVI1; International Polar Year (2007-2008); IPY; modelled; Mooring (long time); MOORY; North Greenland Sea; Polarstern; Primary production of carbon, standard deviation; Primary production of carbon per area, yearly; PS57; PS57/273-1, HGIV; Radius; Sampling date |
| url | https://doi.org/10.1594/PANGAEA.809524 |