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Silicate as regulating nutrient in phytoplankton competition
Open accessAbstract
The development of phytoplankton communities was studied in floating enclosures.The enclosures were supplied with either surface water or water from 40 m depth.Nutrients with or without silicate were added in some of the experiments, while others recieved no artificial fertilization.It is shown that diatom dominance occurred irrespective of season if silicate concentration exceeded a threshold of approximately 2 PM.Flagellate dominance changed to diatom dominance within a few days after nutrient addition resulting in silicate concentrations above this threshold.Dominance of Phaeocystis sp.appeared on several occasions after the bloom of another species, but never at high silicate concentrations.The success of the diatom group seemed to be due to a high inherent growth rate at non-limiting silicate concentrations.Calculations indicated that the inherent growth rate for the diatom group had to be 5 to 50 % higher than for the flagellate group in order to explain the outcome of our experiments.
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Cited by
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Kemp, W., Boynton, W., Adolf, J., Boesch, D., Boicourt, W., Brush, G., Cornwell, J., Fisher, T., Glibert, P., Hagy, J., et al. (2005) · Marine Ecology Progress Series · doi:10.3354/meps303001 · Cited by 1,468
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Godsey, S. E., Kirchner, J. W., & Clow, D. W. (2009) · Hydrological Processes · doi:10.1002/hyp.7315 · Cited by 855
Coastal eutrophication near the Mississippi river delta
Turner, R. E., & Rabalais, N. N. (1994) · Nature · doi:10.1038/368619a0 · Cited by 760
Wallace, R. B., & Gobler, C. J. (2015) · Estuaries and Coasts · doi:10.1007/s12237-014-9818-1 · Cited by 50
Metadata
- Authors
- Egge, J., & Aksnes, D.
- Venue
- Marine Ecology Progress Series
- Publisher
- Inter-Research Science Center
- Published
- 1992
- Volume
- 83
- Pages
- 281-289
- ISSN
- 0171-8630 (ISSN-L)
- 1616-1599
- OpenAlex
- W1994877963
- Cited by
- 777
- References
- 0
- FWCI
- 9.00
- Type
- journal article
- Language
- en
- Open access
- bronze
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