Export fluxes (diatom abundances, particulate organic carbon (POC), diatom carbon) from sediment traps deployed in the Eurasian Arctic Ocean, supplement to: Lalande, Catherine; Nöthig, Eva-Maria; Fortier, Louis (2019): Algal Export in the Arctic Ocean in Times of Global Warming. Geophysical Research Letters


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.

DOI https://doi.org/10.1594/PANGAEA.901800
Related Identifier https://doi.org/10.1029/2019GL083167
Related Identifier https://doi.org/10.1016/j.dsr.2007.04.014
Related Identifier https://doi.org/10.1594/PANGAEA.586835
Related Identifier https://doi.org/10.1029/2009GL040570
Related Identifier https://doi.org/10.1594/PANGAEA.761428
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.901800
Creator Lalande, Catherine; Nöthig, Eva-Maria; Fortier, Louis
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2019
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 1976 data points
Discipline Earth System Research
Spatial Coverage (109.020W, 79.757S, 159.333E, 83.270N); Lomonosov Ridge, Arctic Ocean
Temporal Coverage Begin 1995-09-15T00:00:00Z
Temporal Coverage End 2012-07-31T00:00:00Z