Dünweber, Michael; Swalethorp, Rasmus; Kjellerup, Sanne; Nielsen, Torkel Gissel; Arendt, Kristine Engel; Hjorth, Morten; Tönnesson, Kajsa; Møller, Eva Friis (2010): Plankton biomass, POC and PON concentrations, and sinking velocities during the 2008 spring diatom bloom in Disko Bay [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.809471, Supplement to: Dünweber, M et al. (2010): Succession and fate of the spring diatom bloom in Disko Bay, western Greenland. Marine Ecology Progress Series, 419, 11-29, https://doi.org/10.3354/meps08813
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Abstract:
Phytoplankton and copepod succession was investigated in Disko Bay, western Greenland from February to July 2008. The spring phytoplankton bloom developed immediately after the breakup of sea ice and reached a peak concentration of 24 mg chl a/m**3 2 wk later. The bloom was analyzed during 3 phases: the developing, the decaying, and the post-bloom phases. Grazing impact by the copepod community was assessed by 4 methods; gut fluorescence, in situ faecal pellet production, and egg and faecal pellet production from bottle incubations. Calanus spp. dominated the mesozooplankton community. They were present from the initiation of the bloom but only had a small grazing impact on the phytoplankton. Consequently, there was a close coupling between the spring phytoplankton bloom and sedimentation of particulate organic carbon (POC). Out of 1836 ±180 mg C/m**2/d leaving the upper 50 m, 60 % was phytoplankton based carbon (PPC). The composition and quality of the sedimenting material changed throughout the bloom succession from PPC dominance in the initial phase with a POC/PON ratio close to 6.6 to a dominance of amorphous detritus with a higher POC/PON ratio (>10) in the post-bloom phase. The succession and fate of the phytoplankton spring bloom was controlled by nitrogen limitation and subsequent sedimentation, while grazing-mediated flux by the Calanus-dominated copepod community played a minor role in the termination of the spring bloom of Disko Bay.
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Coverage:
Latitude: 69.233300 * Longitude: -53.433300
Date/Time Start: 2008-04-23T00:00:00 * Date/Time End: 2008-05-28T00:00:00
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
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3 datasets
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Datasets listed in this publication series
- Dünweber, M; Swalethorp, R; Kjellerup, S et al. (2010): (Table 2) Phytoplankton and copepod biomass and specific ingestion rates and grazing impact of Calanus spp. in Disko Bay. https://doi.org/10.1594/PANGAEA.809458
- Dünweber, M; Swalethorp, R; Kjellerup, S et al. (2010): (Table 4) Sinking velocities of total particulate organic carbon and its fractions in Disko Bay. https://doi.org/10.1594/PANGAEA.809462
- Dünweber, M; Swalethorp, R; Kjellerup, S et al. (2010): (Table 3) Concentrations and ratios of POC and PON from water column and sediment traps in Disko Bay. https://doi.org/10.1594/PANGAEA.809461