Growth and physiology of nuisance alga Hincksia sordida during a bloom in South East Queensland, Australia

Lovelock, C.E., Clegg, E., Hurrey, L., Udy, J. and Moore, K. (2008) Growth and physiology of nuisance alga Hincksia sordida during a bloom in South East Queensland, Australia. Journal of Experimental Marine Biology and Ecology, 363 1-2: 84-88. doi:10.1016/j.jembe.2008.06.023


Author Lovelock, C.E.
Clegg, E.
Hurrey, L.
Udy, J.
Moore, K.
Title Growth and physiology of nuisance alga Hincksia sordida during a bloom in South East Queensland, Australia
Journal name Journal of Experimental Marine Biology and Ecology   Check publisher's open access policy
ISSN 0022-0981
Publication date 2008-08-01
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.jembe.2008.06.023
Open Access Status
Volume 363
Issue 1-2
Start page 84
End page 88
Total pages 5
Editor Shumway, S.E.
Hughes, R.
Thrush, S.
Place of publication Netherlands
Publisher Elsevier BV
Language eng
Subject C1
960802 Coastal and Estuarine Flora, Fauna and Biodiversity
060205 Marine and Estuarine Ecology (incl. Marine Ichthyology)
050103 Invasive Species Ecology
Abstract Nuisance blooms of macroalgae are increasingly common in response to nutrient pollution of the coastal zone. In Queensland Hincksia sordida, a filamentous brown alga, have been increasing in the Noosa area in summer over the last two decades. Because the Noosa area is relatively unpolluted compared to other locations where blooms are common our study was aimed at determining the sensitivity of the algae to nutrient availability and characterizing the physiological state of the algae throughout the bloom period. Although physiological condition of the algae fluctuated over the summer, algae were observed to have high Fates of photosynthetic electron transport in the Held and had high growth rates when cultured in the laboratory. Nitrogen (N) to Phosphorus (P) ratios of the algal tissue indicated that growth was N limited for most of the summer bloom period. Laboratory tests of the response of algal growth to nutrient availability found Hincksia sordida to be highly sensitive to N availability, achieving maximum growth rates at ammonium concentrations of 2-3 mu M. We conclude that due to the alga's high sensitivity at low N concentrations blooms of Hincksio sordida may be sustained at low levels of nutrient availability. (C) 2008 Elsevier B.V. All rights reserved.
Keyword Ecology
Marine & Freshwater Biology
Environmental Sciences & Ecology
Marine & Freshwater Biology
ECOLOGY
MARINE & FRESHWATER BIOLOGY
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
Ecology Centre Publications
Centre for Marine Studies Publications
 
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Created: Thu, 16 Apr 2009, 01:11:00 EST by Peter Fogarty on behalf of Centre for Marine Studies