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

• Main Authors: Lalande, Catherine, Nöthig, Eva-Maria, Fortier, Louis
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2019
• Subjects: Event label; Latitude of event; Longitude of event; Elevation of event; DEPTH, water; DATE/TIME; Date/time end; Duration, number of days; Diatoms, cell, flux; Diatoms, empty, valve, flux; Nitzschia frigida, cell, flux; Nitzschia frigida, valves, flux; Melosira arctica, cell, flux; Melosira arctica, valves, flux; Chaetoceros spp., cell, flux; Chaetoceros spp., valves, flux; Chaetoceros spp. spores, flux; Thalassiosira spp., cell, flux; Thalassiosira spp., valves, flux; Carbon, organic, particulate, flux; Carbon, organic, particulate, flux per day; Mooring; Biological Oceanography @ AWI AWI_BioOce; Arctic; Arctic Ocean; Laptev Sea; Global warming; ice algae; laptev; Nansen Basin; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.901800; https://doi.pangaea.de/10.1594/PANGAEA.901800

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.