Chlorophyll a in Antarctic sea ice from historical ice core data

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 pe...

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Bibliographic Details
Published in:Geophysical research letters 2012-11, Vol.39 (21), p.n/a
Main Authors: Meiners, K. M., Vancoppenolle, M., Thanassekos, S., Dieckmann, G. S., Thomas, D. N., Tison, J.-L., Arrigo, K. R., Garrison, D. L., McMinn, A., Lannuzel, D., van der Merwe, P., Swadling, K. M., Smith Jr, W. O., Melnikov, I., Raymond, B.
Format: Article
Language:English
Subjects:
algae
Antarctica
Biogeochemistry
Biology
Biomass
Chlorophyll
chlorophyll a
Chlorophylls
Climate
Communities
Cryosphere
Earth Sciences
Environmental Sciences
Geobiology
Geophysics
Global Changes
Ice
Ice thickness
Marine
Oceans
Pack ice
Physics
Sciences of the Universe
Sea ice
Vertical distribution
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Summary: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 apeaks 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 associated with thin ice (
ISSN:0094-8276
1944-8007
DOI:10.1029/2012GL053478