Stratification and the distribution of phytoplankton, nutrients, inorganic carbon, and sulfur in the surface waters of Weddell Sea leads

The distribution (fine resolution depth profiles) of major nutrients, chlorophyll-a, organic compounds, and phytoplankton (biomass and numbers) was examined in lead water in pack ice of the Weddell Sea. Samples were taken by pulling water into a syringe from a series of depths from 0.002 to 4m. Whil...

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Bibliographic Details
Published in:Deep Sea Research Part II: Topical Studies in Oceanography
Main Authors: Zemmelink, H. J., Houghton, L., Dacey, J. W. H., Stefels, J., Koch, B. P., Wisotzki, A., Scheltz, A., Thomas, D. N., Papadimitriou, S., Kennedy, H., Kuosa, H., Dittmar, T.
Format: Article in Journal/Newspaper
Language:English
Published: 2008
Subjects:
stratification
phytoplankton
nutrients
inorganic carbon
sulfur compounds
Southern Ocean
ROSS SEA
SOUTHERN-OCEAN
ICE
ANTARCTICA
DIMETHYLSULFIDE
MARINE
PHOTOCHEMISTRY
IRRADIANCE
DIATOM
ALGAE
Ross Sea
Weddell
Weddell Sea
Antarc*
Antarctica
Online Access:https://hdl.handle.net/11370/ce272e5f-b210-48e1-9be2-b3b05423e7dd
https://research.rug.nl/en/publications/ce272e5f-b210-48e1-9be2-b3b05423e7dd
https://doi.org/10.1016/j.dsr2.2007.12.011
Description
Summary:The distribution (fine resolution depth profiles) of major nutrients, chlorophyll-a, organic compounds, and phytoplankton (biomass and numbers) was examined in lead water in pack ice of the Weddell Sea. Samples were taken by pulling water into a syringe from a series of depths from 0.002 to 4m. While concentrations of compounds of interest remained constant in the water column, an enhanced depletion of nutrients (ammonium, nitrate, silicate, and inorganic carbon) occurred above the pycnocline at 0.1 m. Coinciding with this depletion was an increase of organic matter and chlorophyll. The change in carbon isotopic composition showed that an enhanced primary production occurred at the sea surface. Cell counts and nutrient disappearance ratios suggest that primary production was dominated by diatoms. These results show that the sea surface can have different chemical characteristics than the deeper water column. (C) 2008 Elsevier Ltd. All rights reserved.

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