(Table 2) Integrated concentration, production and dissolution of silica in the water column of the southern Pacific ...
An intense diatom bloom developed within a strong meridional silicic acid gradient across the Antarctic Polar Front at 61°S, 170°W following stratification of the water column in late October/early November 1997. The region of high diatom biomass and the silicic acid gradient propogated southward ac...
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| Format: | Dataset |
| Language: | English |
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PANGAEA
2001
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| Online Access: | https://dx.doi.org/10.1594/pangaea.441703 https://doi.pangaea.de/10.1594/PANGAEA.441703 |
| Summary: | An intense diatom bloom developed within a strong meridional silicic acid gradient across the Antarctic Polar Front at 61°S, 170°W following stratification of the water column in late October/early November 1997. The region of high diatom biomass and the silicic acid gradient propogated southward across the Seasonal Ice Zone through time, with the maximum diatom biomass tracking the center of the silicic acid gradient. High diatom biomass and high rates of silica production persisted within the silicic acid gradient until the end of January 1998 (ca. 70 d) driving the gradient over 500 km to the south of its original position at the Polar Front. The bloom consumed 30 to >40 µM Si(OH)4 in the euphotic zone between about 60 and 66°S leaving near surface concentrations <2.5 µM and occasionally <1.0 µM in its wake. Integrated biogenic silica concentrations within the bloom averaged 410 mmol Si/m**2 (range 162-793 mmol Si/m**2). Average integrated silica production on two consecutive cruises in December ... : Supplement to: Brzezinski, Mark A; Nelson, David M; Franck, Valerie M; Sigmon, Daniel E (2001): Silicon dynamics within an intense open-ocean diatom bloom in the Pacific sector of the Southern Ocean. Deep Sea Research Part II: Topical Studies in Oceanography, 48(19-20), 3997-4018 ... |
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