Forest, Alexandre; Wassmann, Paul; Slagstad, Dag; Bauerfeind, Eduard; Nöthig, Eva-Maria; Klages, Michael (2010): (Table 1) Annual gross and new primary production rates obtained for areas centered on the AWI-HAUSGARTEN mooring (2000-2005) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.809524, Supplement to: Forest, A et al. (2010): Relationships between primary production and vertical particle export at the Atlantic-Arctic boundary (Fram Strait, HAUSGARTEN). Polar Biology, 33(12), 1733-1746, https://doi.org/10.1007/s00300-010-0855-3
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Abstract:
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.
Project(s):
Coverage:
Latitude: 79.028330 * Longitude: 4.346660
Date/Time Start: 2000-08-31T00:00:00 * Date/Time End: 2001-08-14T00:00:00
Minimum Elevation: -2456.0 m * Maximum Elevation: -2456.0 m
Event(s):
FEVI1 (PS57/273-1, HGIV) * Latitude: 79.028330 * Longitude: 4.346660 * Date/Time Start: 2000-08-31T00:00:00 * Date/Time End: 2001-08-14T00:00:00 * Elevation: -2456.0 m * Location: North Greenland Sea * Campaign: ARK-XVI/2 (PS57) * Basis: Polarstern * Method/Device: Mooring (long time) (MOORY)
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sampling date | Sampling date | Forest, Alexandre | |||
| 2 | Radius | Radius | km | Forest, Alexandre | ||
| 3 | Primary production of carbon per area, yearly | PP C area | g/m2/a | Forest, Alexandre | modelled | gross PP |
| 4 | Primary production of carbon, standard deviation | PP C std dev | ± | Forest, Alexandre | modelled | gross PP |
| 5 | Primary production of carbon per area, yearly | PP C area | g/m2/a | Forest, Alexandre | modelled | new PP |
| 6 | Primary production of carbon, standard deviation | PP C std dev | ± | Forest, Alexandre | modelled | new PP |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
210 data points