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Determination of the photosynthetic responses and acclimation of sea ice algae to changes in light climate, especially as governed by snow thickness.

General

Organisation
Project start
11.04.2015
Project end
23.05.2015
Type of project
Research
Project theme
Sea ice
Project topic
Climate research
Sea ice

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, North-East
Fieldwork location

Geolocation is 81.701578334684, -17.182618528605

Fieldwork start
11.04.2015
Fieldwork end
23.05.2015

Project details

24.09.2018
Science / project plan

Ice algae are important plants supporting food webs in the Arctic, especially during spring and early summer when there is very little phytoplankton in the water. The aim of this project is to determine photosynthetic responses and acclimation of sea ice algae to changes in their light climate, especially as governed by differences in snow thickness. The central concept of the project is that snow cover is the primary factor controlling how much light the ice algae receive, which not only limits the available light for photosynthesis, but also protects algae from excessive irradiances and creates a favorable environment for their growth. Our work involves collecting ice cores from sea ice with a range of snow cover thicknesses, sampling ice algae from cores, and determining species composition, biomass and photosynthetic behavior, all in relation to the quantity and quality of light they receive.

Field Site: Villum Research Station, Station Nord, Greenland

PI: Lars Chresten Lund-Hansen & Brian Sorrell

Fieldwork summary/photo blog: Link to project summary report

 

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