Publication Date:
2019-07-17
Description:
Sea ice core chlorophyll a data are used to describe the
seasonal, regional and vertical distribution of algal biomass in
Southern Ocean pack ice. The Antarctic Sea Ice Processes and
Climate – Biology (ASPeCt – Bio) circumpolar dataset consists
of 1300 ice cores collected during 32 cruises over a period
of 25 years. The analyses show that integrated sea ice chlorophyll
a peaks in early spring and late austral summer, which
is consistent with theories on light and nutrient limitation. The
results indicate that on a circum-Antarctic scale, surface,
internal and bottom sea ice layers contribute equally to integrated
biomass, but vertical distribution shows distinct differences
among six regions around the continent. The vertical
distribution of sea ice algal biomass depends on sea ice
thickness, with surface communities most commonly associatedwith
thin ice (〈0.4m), and ice ofmoderate thickness (0.4–
1.0 m) having the highest probability of forming bottom
communities.
Repository Name:
EPIC Alfred Wegener Institut
Type:
Article
,
isiRev
Format:
application/pdf
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