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Limits to productivity of the alga Pleurochrysis carterae (Haptophyta) grown in outdoor raceway ponds

Moheimani, N.R.ORCID: 0000-0003-2310-4147 and Borowitzka, M.A.ORCID: 0000-0001-6504-4563 (2007) Limits to productivity of the alga Pleurochrysis carterae (Haptophyta) grown in outdoor raceway ponds. Biotechnology and Bioengineering, 96 (1). pp. 27-36.

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This study examined the effects of oxygen concentration, pond temperature and irradiance on productivity and CaCO3 formation of the coccolith-forming alga, Pleurochrysis carterae CCMP647 grown in semi-continuous culture in outdoor raceway ponds. During the day the oxygen content of the pond increases markedly and P. carterae photosynthesis is inhibited by these high O2 concentrations with the inhibition increasing with increasing temperature. The high irradiance outdoors presents less of a problem to photosynthesis and productivity as the algae can acclimate well to high irradiances over a period of several weeks. Pond depth also effects productivity and this effect varies witn season. During autumn, productivities were highest at depths of 13 to 16 cm, and decreased when the depth was increased. During summer productivity was much lower at 13 cm pond depth and increased when the depth was increased to 16, 18 and 21 cm. Heating the ponds in the morning by approximately 3 to 5

Item Type: Journal Article
Murdoch Affiliation(s): School of Biological Sciences and Biotechnology
Algae & Seagrass Research Group
Publisher: Wiley - V C H Verlag GmbbH & Co
Copyright: © 2006 Wiley Periodicals, Inc.
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