Algal pigment concentrations from the Arctic Ocean 2018 expedition
Giacomo DiTullio, Peter Lee, Nicole Schanke
This dataset contains pigment concentrations from the phytoplankton community in the water column along an ice floe drift station in the High Arctic Ocean. Pigment concentrations are reported in ng/L.
The pigments analyzed include chlorophyll a, which can be used as a measurement of biomass, as well as several marker pigments that provide insight into the phytoplankton community composition.
Water samples were collected via CTD (conductivity, temperature, depth) sondes at depths within the top 200 m from August – September 2018. Filtered biomass was then analyzed using HPLC techniques.
MarineEcosystemsOcean biology and chemistryArctic OceanAO18AO2018Phytoplankton communityPhytoplankton pigmentsIcebreaker Oden
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Citation
References
DiTullio G, Lee P (2019) Algal pigment concentrations, High Arctic, August-September 2018. Arctic Data Center. https://doi.org/10.18739/A2028PD2H
Data description
The included dataset contains algal pigment concentrations from samples collected during the Arctic Ocean 2018 expedition. These data provide estimates of phytoplankton community biomass and composition, as taxonomic groups can be estimated by the presence of a few indicating pigments.
Because most of these samples were collected in the same location, but over time, we begin to gain insight into the shift of the phytoplankton community composition from the summer maximal biomass (August) to the declining community as autumn conditions result in lower nutrient and light levels and increased ice cover (September).
Over the course of this expedition, CTD casts were made to collect samples from 5-200 meters, to sample the photic zone. Casts were made at the marginal ice zone, as well as on an almost-daily basis at the mooring location in the high Arctic Ocean. Water samples collected were filtered (GF/F) and frozen until HPLC analysis was preformed. HPLC protocol involves an overnight extraction in acetone before being analyzed on an Agilent 1100 HPLC system equipped with an autosampler, photodiode array and fluorescence detectors. Pigment concentrations were determined using standard peak integration procedures with Agilent's Chemstation software.
The dataset is included in one comma-separated values (csv) file.
Comments
Data were collected during the Arctic Ocean 2018 expedition on board the Swedish icebreaker (I/B) Oden, which was organized by the Swedish Polar Research Secretariat.
The data in this dataset are the same as in DiTullio and Lee (2019) published by the Arctic Data Center (see References) under the Creative Commons Universal 1.0 Public Domain Dedication.
Project
Arctic Ocean 2018. Microbial Oceanography Links to New aerosols in Ice-covered Regions (MjOLNIR) in the Arctic Ocean, NSF award 1736783.
Publisher
Bolin Centre Database
License
First name
Nicole
Last name or organisation
Schanke
Email address
Address
Hollings Marine Lab College of Charleston 331 Fort Johnson Road
Postal code
29412
City
Charleston
Province or state
South Carolina
Country
USA
GCMD science keyword
Earth science > Oceans > Ocean chemistry > Pigments
GCMD location
Ocean > Arctic Ocean
Dataset language
English
Begin date
2018-08-02
End date
2018-09-20