Seasonal Synergy between bacteria and algae in Kobbefjord sea ice
General
Fieldwork / Study
Geolocation is 64.163563765741, -51.460819244385
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Project details
The goal of this project is to determine how marine bacteria in sea ice adapt to changing brine salinities as temperatures drop in winter and increase in warmer seasons. Our working hypothesis is that, as brine salinities increase in winter, bacteria take up and retain organic compounds in intracellular pools (to act as compatible solutes to protect against an otherwise damaging efflux of dissolved salts from the cell), later respiring these same compounds as an energy source when salinities freshen in spring and summer and compatible solutes are no longer needed; in the respiratory process, ammonia is also released, increasing the available nitrogen sources for algae within the ice. We sampled in March, the transitional period from winter to spring in Kobbefjord sea ice, to explore this seasonal synergy hypothesis. We conducted real-time 14C-based experiments to evaluate compatible solute uptake and fate in sackhole brines and related sample types of varying salinities and collected additional volumes for later analyses of supportive bacterial and algal parameters, including abundance and biomass, metagenomics and transcriptomics, stable isotope probing for cellular incorporation of compatible solutes, and concentrations of extracellular polysaccharide substances, particulate organic carbon and nitrogen, and dissolved nutrients, especially ammonia.
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Title | Project start | End date | Organisation | Department | Project study region |
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IceBird Summer | 17.07.2021 | 29.08.2021 | Alfred-Wegener-Institut (AWI) | Greenland, North-East | |
IceBird Winter | 18.03.2021 | 17.04.2021 | Alfred-Wegener-Institut (AWI) | Greenland, North-East | |
FLOEEDGE | 01.01.2018 | 30.11.2018 | Danish Meteorological Institute (DMI) | Research and Development | Greenland, North-West |
ASIMBO summer 2018 | 27.07.2018 | 17.07.2018 | Alfred-Wegener-Institut (AWI) | Arctic Ocean | |
Sea-ice Environmental Research Facility (SERF) – 2018 | 09.01.2018 | 30.04.2018 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | SERF Winnipeg |
ASIP (Automated Sea Ice Products) | 01.11.2017 | 31.10.2020 | Danish Meteorological Institute (DMI) | Research and Development | Arctic (entire region) |
Photosynthetic and photoprotective characteristics of ice algae, sinking algae and under-ice phytoplankton during spring | 27.04.2015 | 05.06.2015 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Baffin Island |
Halogen chemistry across the ocean-sea ice-atmosphere interface | 01.03.2014 | 21.03.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Cambridge Bay |
Seasonal succession of the microbial community in Arctic sea ice | 01.06.2014 | 30.06.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Cambridge Bay |
Mycosporine-like amino acids in sea-ice algal communities | 01.06.2014 | 30.06.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Cambridge Bay |
Phytoplankton dynamics under sea-ice - Case study of Cambridge Bay | 01.03.2014 | 21.03.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Cambridge Bay |
Temporal trends in relative biomass composition of key algae species determined through FTIR | 01.03.2014 | 21.03.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Cambridge Bay |
Assessment of productivity and environmental factors affecting ice algae | 01.03.2014 | 10.06.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Cambridge Bay |
Underwater eddy covariance measurements of heat, salt, and dissolved oxygen | 15.04.2014 | 30.06.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Cambridge Bay |
Irradiance in the snowpack and related physical and optical properties | 23.05.2014 | 01.06.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Cambridge Bay |
Retrieval of advanced melt season parameters over first-year sea ice using satellite remote sensing | 01.06.2014 | 30.06.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Cambridge Bay |
Fully-polarimetric C-band remote sensing of thermodynamic changes in snow-covered first-year sea ice | 01.05.2014 | 01.06.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Cambridge Bay |
Polarimetric scatterometer and SAR measurements of snow covered first-year sea ice for snow thickness discrimination. | 15.04.2014 | 21.05.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Cambridge Bay |
Air-ice fluxes and the spring/summer evolution of the surface heat budget (SEB) | 01.05.2014 | 30.06.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Cambridge Bay |
Physical processes controlling melt evolution | 15.05.2014 | 30.06.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Cambridge Bay |
Microwave scattering from sea ice pressure ridges | 15.04.2014 | 21.05.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Cambridge Bay |
Seasonal Synergy between bacteria and algae in Kobbefjord sea ice | 10.03.2014 | 28.03.2014 | University of Washington | School of Oceanography | Greenland, Mid-West |
Seasonal Synergy between Bacterial Osmoprotection and Algal Production in Sea ice. | 27.03.2013 | 13.04.2013 | University of Washington | School of Oceanography | Greenland, Mid-West |
Frost flowers and carbon dynamics in Arctic | 26.02.2018 | 01.03.2019 | Greenland Institute of Natural Resources (GINR) | Greenland Climate Research Centre | Greenland, South-West |
OSI SAF | 01.03.2017 | 28.02.2022 | Danish Meteorological Institute (DMI) | Research and Development | Arctic (entire region) |
Ice2ice - What if Arctic sea ice disappears? | 01.08.2014 | 31.07.2019 | Danish Meteorological Institute (DMI) | Research and Development | Arctic (entire region) |
Carbon dynamics in the transition from ice-covered ocean to open waters in Young Sound, NE Greenland | 03.07.2017 | 24.07.2017 | Greenland Institute of Natural Resources (GINR) | Greenland Climate Research Centre | Greenland, North-East |
In situ pCO2 and pH in sea ice in Young Sound | 03.07.2017 | 24.07.2017 | Greenland Institute of Natural Resources (GINR) | Greenland Climate Research Centre | Greenland, North-East |
2012 ASP Young Sund campaign | 11.03.2012 | 31.03.2012 | Aarhus University (AU) | Arctic Research Centre (ARC) | Greenland, North-East |
Assessment of sea ice algae production in Kanajorusuit Fjord | 04.03.2013 | 17.04.2013 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Greenland, South-West |
Underwater Eddy Correlation Measurements of Ice-Ocean Heat and Mass Exchange | 04.03.2013 | 17.04.2013 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Greenland, South-West |
Melt pond evolution of organic contaminants | 22.05.2014 | 02.07.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Greenland, North-East |
Dynamics of CO2 and greenhouse gases within sea ice | 01.05.2014 | 03.07.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Greenland, North-East |
The function of a polynia. Deployment of moorings in Young Sund, NE Greenland | 20.10.2013 | 30.10.2013 | Aarhus University (AU) | Arctic Research Centre (ARC) | Greenland, North-East |
Case study: seasonal transition of geophysical parameters of different ice types in Young Sound | 01.05.2014 | 03.07.2014 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Greenland, North-East |
Comparison of productivity & photosynthetic properties of micro algae in first-year and multi-year sea ice | 09.08.2015 | 29.08.2015 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Greenland, North-East |
Quantification of Ikaite | 10.04.2015 | 03.05.2015 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Greenland, North-East |
Sea ice geophysics - deployment of mass balance buoys | 11.04.2015 | 02.05.2015 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Greenland, North-East |
Impact of snow cover on the inorganic carbon dynamic within sea ice | 03.05.2015 | 25.05.2015 | Aarhus University (AU) | Arctic Research Centre (ARC) | Greenland, North-East |
Determination of the photosynthetic responses and acclimation of sea ice algae to changes in light climate, especially as governed by snow thickness. | 11.04.2015 | 23.05.2015 | Aarhus University (AU) | Department of Bioscience | Greenland, North-East |
Sediment distributions and characteristics in seawater, sea ice and glacier ice | 09.07.2015 | 28.08.2015 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Greenland, North-East |
Sea ice geochemistry: mercury, ikaite and phosphate | 12.04.2015 | 23.05.2015 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Greenland, North-East |
Moorings Retrievemnet and redeployment | 08.04.2016 | 26.04.2016 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Greenland, North-East |
Arctic Geomicrobiology and Climate Change | 01.09.2016 | 08.09.2016 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Baffin Bay |
Understanding the Effects of Climate Change and Industrial Development on Contaminant Processes and Exposure in the Canadian Arctic Marine Ecosystem: How Can We Prepare? | 01.09.2016 | 08.09.2016 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Baffin Bay |
Sea Ice - Understanding and Modelling Ocean-Sea Ice-Atmosphere Biogeochemical Coupling in a Changing Climate | 03.06.2016 | 14.07.2016 | University of Manitoba (UoM) | Centre for Earth Observation Science (CEOS) | Baffin Bay |
Microbial degradation of oil pollution in Arctic seawater and sea ice | 15.02.2016 | 01.05.2016 | Aarhus University (AU) | Arctic Research Centre (ARC) | Greenland, South-West |