Sea ice biology and biogeochemistry data of Lincoln Sea 2018

• Main Author: Campbell, Karley
• Format: Dataset
• Language: English
• Published: NERC EDS UK Polar Data Centre 2021
• Subjects: "EARTH SCIENCE","BIOSPHERE","ECOLOGICAL DYNAMICS","ECOSYSTEM FUNCTIONS","BIOGEOCHEMICAL CYCLES"; "EARTH SCIENCE","OCEANS","OCEAN CHEMISTRY","CHLOROPHYLL"; "EARTH SCIENCE","CRYOSPHERE","SEA ICE","ICE FLOES"; Arctic; Sea ice; algae; biogeochemistry; production; Arctic Ocean; Canada; DuBois; ice algae; Lincoln Sea
• Online Access: https://dx.doi.org/10.5285/366092bd-ab2f-4c80-a6d8-226079d2a0be; https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01581

Data were collected as part of the DiatomARCTIC project during the Multidisciplinary Arctic Program - Last Ice sampling campaign (82.576 N 62.471 W), 7-23 May, 2018. The bottom 10 cm of ice samples were collected during this time from neighbouring first-year and multi-year sea ice floes, from which the following parameters were determined: chlorophyll a, exopolymeric substances, ice algal taxonomic composition, oxygen-based net community production and bulk-ice nitrate, nitrite and phosphate concentrations. All samples were melted without dilution and were processed by K Campbell. This work is a contribution to the Diatom ARCTIC project (NE/R012849/1; 03F0810A), part of the Changing Arctic Ocean program, jointly funded by the UKRI Natural Environment Research Council and the German Federal Ministry of Education (BMBF) and Fisheries and Oceans Canada (DFO) Science and the Marine Productivity Laboratory Program. The Multidisciplinary Arctic Program (MAP) - Last Ice is funded by Fisheries and Oceans Canada (DFO) Science in support of Tuvaijuittuq Marine Protected Area (MPA). Additional support was provided by Polar Continental Shelf Program (PCSP, Project 10718) and the Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Funds to CM and CHSR. : The bottom 10 cm of sea ice cores were collected on May 23 from 14 locations along a 240-m transect spanning both first-year ice (FYI) and multi-year ice (MYI) floes, using a 9-cm diameter Mark II ice coring system from Kovacs Enterprise LLC. These cores were melted without dilution and processed within 24h for the variables defined. Variables were processed according to the following references: Chlorophyll a (Parsons et al., 1984); 0.7 µm GF/F (Whatmann) Exopolymeric substances (Dubois et al., 1956); 0.4 µm polycarbonate filters (Millipore) Sea ice algal taxonomy (Campbell et al., 2018); Lugol preservation Net community production (Campbell et al., 2016) Inorganic nutrients (Strickland and Parsons, 1972); 0.7 µm GF/F (Whatmann) pre-filtered Data collected on 23 May were taken from 14 locations (10 first-year ice; 4 multi-year ice). Data from single point locations in the study region were also taken for first-year ice on 4, 11, 15, 19, and 23 May, and for multi-year ice on 7, 11, 19, 23 May. : Chlorophyll a (Turner Designs 10AU fluorometer) Exopolymeric substances (Agilent Cary 60 spectrophotometer) Sea ice algal taxonomy (Nikon inverted microscope) Net community production (Firesting oxygen optodes; modelling with Matlab R2019b software) Inorganic nutrients (LaChat QuikChem 8500 series 2 flow injection analyser (QuikChem Method 31-114-27-1-D)) : Instrument calibration was done prior to measurements of fluorescence (chlorophyll a), net community production (two-point calibration), and inorganic nutrients. The concentration of exopolymeric substances was determined with reference to glucose.