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Nutrient limitation in Ellis Fjord, eastern Antarctica

Citation

McMinn, A and Gibson, JAE and Hodgson, DA and Ashman, J, Nutrient limitation in Ellis Fjord, eastern Antarctica, Polar Biology, 15, (4) pp. 269-276. ISSN 0722-4060 (1995) [Refereed Article]

DOI: doi:10.1007/BF00239847

Abstract

The occurrence of high chlorophyll-a concentrations (up to 11.6μgl-1) at shallow depths within Ellis Fjord, eastern Antarctica, during spring and summer, coincided with the development of a stratified water column. Macronutrient concentrations during periods of high chlorophyll-a levels were very low. Phosphate concentrations decreased to 0.2 μM, nitrate to 0.4 μM and silicate to 3.9 μM. High rates of nutrient depletion early in the season can be explained by strong sea-ice algal mat development. An Si:N:P uptake ratio of 25.5:13.8:1 indicates a strong demand for silicate. Minimum silicate levels were below those necessary for maximum diatom growth and probably contributed to the successional shift from diatoms to phytoflagellates. © 1995 Springer-Verlag.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and Estuarine Ecology (incl. Marine Ichthyology)
Objective Division:Environment
Objective Group:Natural Hazards
Objective Field:Natural Hazards in Marine Environments
Author:McMinn, A (Professor Andrew McMinn)
Author:Gibson, JAE (Dr John Gibson)
Author:Hodgson, DA (Dr Dominic Hodgson)
Author:Ashman, J (Mr Ashman)
ID Code:5276
Year Published:1995
Web of Science® Times Cited:25
Deposited By:IASOS
Deposited On:1995-08-01
Last Modified:2011-08-24
Downloads:0

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