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Lalande, Catherine; Nöthig, Eva-Maria; Fortier, Louis (2019): Export fluxes (diatom abundances, particulate organic carbon (POC), diatom carbon) from sediment traps deployed in the Eurasian Arctic Ocean. PANGAEA, https://doi.org/10.1594/PANGAEA.901800, Supplement to: Lalande, C et al. (2019): Algal Export in the Arctic Ocean in Times of Global Warming. Geophysical Research Letters, https://doi.org/10.1029/2019GL083167

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Abstract:
Satellite‐derived data suggest an increase in annual primary production following the loss of summer sea ice in the Arctic Ocean. The scarcity of field data to corroborate this enhanced algal production incited a collaborative project combining six annual cycles of sequential sediment trap measurements obtained over a 17‐year period in the Eurasian Arctic Ocean. Here we present microalgal fluxes measured at ~200 m to reflect the bulk of algal carbon production. Ice algae contributed to a large proportion of the microalgal carbon export before complete ice melt and possible detection of their production by satellites. In the northern Laptev Sea, annual microalgal carbon fluxes were lower during the 2007 minimum ice extent than in 2006. In 2012, early snowmelt led to early microalgal carbon flux in the Nansen Basin. Hence, a change in the timing of snowmelt and ice algae release may affect productivity and export over the Arctic basins.
Related to:
Fahl, Kirsten; Nöthig, Eva-Maria (2007): Lithogenic and biogenic particle fluxes on the Lomonosov Ridge (central Arctic Ocean) and their relevance for sediment accumulation: Vertical vs. lateral transport. Deep Sea Research Part I: Oceanographic Research Papers, 54(8), 1256-1272, https://doi.org/10.1016/j.dsr.2007.04.014
Fahl, Kirsten; Nöthig, Eva-Maria (2007): Lithogenic and biogenic particle fluxes on the Lomonosov Ridge of trap LOMO-2. PANGAEA, https://doi.org/10.1594/PANGAEA.586835
Lalande, Catherine; Bélanger, Simon; Fortier, Louis (2009): Impact of a decreasing sea ice cover on the vertical export of particulate organic carbon in the northern Laptev Sea, Siberian Arctic Ocean. Geophysical Research Letters, 36(21), https://doi.org/10.1029/2009GL040570
Zernova, Valentina V; Nöthig, Eva-Maria; Shevchenko, Vladimir P (2000): (Table 1) Exposures and microalgae fluxes at 150 m depth at the mooring station LOMO-2 over the Lomonosov Ridge in the period from September 15,1995 till August 16, 1996. PANGAEA, https://doi.org/10.1594/PANGAEA.761428
Project(s):
Coverage:
Median Latitude: 81.099692 * Median Longitude: 136.124743 * South-bound Latitude: 79.756780 * West-bound Longitude: 109.020470 * North-bound Latitude: 83.270500 * East-bound Longitude: 159.333430
Date/Time Start: 1995-09-15T00:00:00 * Date/Time End: 2012-07-31T00:00:00
Minimum DEPTH, water: 150 m * Maximum DEPTH, water: 285 m
Event(s):
Gakkel_A1-1 (PS78/255-1) * Latitude: 83.270500 * Longitude: 124.767500 * Date/Time Start: 2011-09-15T00:00:00 * Date/Time End: 2012-08-15T00:00:00 * Elevation: -4240.0 m * Method/Device: Mooring (MOOR)
Gakkel_N1-1 (PS78/262-3) * Latitude: 82.645580 * Longitude: 109.020470 * Date/Time Start: 2011-09-18T00:00:00 * Date/Time End: 2012-08-15T00:00:00 * Elevation: -3600.0 m * Method/Device: Mooring (MOOR)
LOMO-2 (PS2756-1) * Latitude: 81.068050 * Longitude: 138.900000 * Date/Time Start: 1995-09-15T00:00:00 * Date/Time End: 1996-08-16T00:00:00 * Elevation: -1710.0 m * Location: Lomonosov Ridge, Arctic Ocean * Method/Device: Mooring (MOOR)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventNöthig, Eva-Maria
2Latitude of eventLatitudeNöthig, Eva-Maria
3Longitude of eventLongitudeNöthig, Eva-Maria
4Elevation of eventElevationmNöthig, Eva-Maria
5DEPTH, waterDepth watermNöthig, Eva-MariaGeocode – trap depth
6DATE/TIMEDate/TimeNöthig, Eva-MariaGeocode
7Date/time endDate/time endNöthig, Eva-Maria
8Duration, number of daysDurationdaysNöthig, Eva-Maria
9Diatoms, cell fluxDiatom cell flux106 #/m2/dayNöthig, Eva-Maria
10Diatoms, empty, valve fluxDiatom empty valv flux106 #/m2/dayNöthig, Eva-Mariaemtpy frustules
11Nitzschia frigida, cell fluxN. frigida cell flux106 #/m2/dayNöthig, Eva-Maria
12Nitzschia frigida, valves fluxN. frigida valv flux106 #/m2/dayNöthig, Eva-Mariaemtpy frustules
13Melosira arctica, cell fluxM. arctica cell flux106 #/m2/dayNöthig, Eva-Maria
14Melosira arctica, valves fluxM. arctica valv flux106 #/m2/dayNöthig, Eva-Mariaemtpy frustules
15Chaetoceros spp., cell fluxChaetoceros spp. cell flux106 #/m2/dayNöthig, Eva-Maria
16Chaetoceros spp., valves fluxChaetoceros spp. valv flux106 #/m2/dayNöthig, Eva-Mariaemtpy frustules
17Chaetoceros spp. spores, fluxChaetoceros spp. spores flux106 #/m2/dayNöthig, Eva-Maria
18Thalassiosira spp., cell fluxThalassiosira spp. cell flux106 #/m2/dayNöthig, Eva-Maria
19Thalassiosira spp., valves fluxThalassiosira spp. valv flux106 #/m2/dayNöthig, Eva-Mariaemtpy frustules
20Carbon, organic, particulate fluxPOC fluxmg/m2/dayNöthig, Eva-Maria
21Carbon, organic, particulate flux per dayPOC fluxµg/m2/dayNöthig, Eva-MariaFossula arctica
22Carbon, organic, particulate flux per dayPOC fluxµg/m2/dayNöthig, Eva-MariaFragilariopsis spp.
23Carbon, organic, particulate flux per dayPOC fluxµg/m2/dayNöthig, Eva-MariaNavicula spp.
24Carbon, organic, particulate flux per dayPOC fluxµg/m2/dayNöthig, Eva-MariaGyrosigma/Pleurosigma/Haslea
25Carbon, organic, particulate flux per dayPOC fluxµg/m2/dayNöthig, Eva-MariaNitzschia frigida/ neofrigida
26Carbon, organic, particulate flux per dayPOC fluxµg/m2/dayNöthig, Eva-MariaPseudo-nitzschia/Nitzschia spp.
27Carbon, organic, particulate flux per dayPOC fluxµg/m2/dayNöthig, Eva-MariaPennate diatoms
28Carbon, organic, particulate flux per dayPOC fluxµg/m2/dayNöthig, Eva-MariaChaetoceros spp.
29Carbon, organic, particulate flux per dayPOC fluxµg/m2/dayNöthig, Eva-MariaMelosira arctica
30Carbon, organic, particulate flux per dayPOC fluxµg/m2/dayNöthig, Eva-MariaThalassiosira spp.
31Carbon, organic, particulate flux per dayPOC fluxµg/m2/dayNöthig, Eva-MariaCentric diatoms
32Carbon, organic, particulate flux per dayPOC fluxµg/m2/dayNöthig, Eva-MariaCeratium arcticum
33Carbon, organic, particulate flux per dayPOC fluxµg/m2/dayNöthig, Eva-MariaCoccolithophores
Size:
1976 data points

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