Ore dust pollution and body temperatures of intertidal animals |
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| Authors: | T Erasmus AF De Villiers |
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| Institution: | Department of Zoology, University of Port Elizabeth, P.O. Box 1600, Port Elizabeth 6000, South Africa. |
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| Abstract: | Intertidal animals were dusted with iron ore dust and, even after two full tidal cycles, when exposed to direct sunlight during low tide the treated animals heated faster, reached higher temperatures and cooled faster than controls. No short term mortalities were observed. Ore coating changes the colour of the animals and it would appear that colour is one of the important mechanisms controlling the heat budget. Ore dust pollution may therefore have a long-term effect on intertidal animals through its effect on their heat balance. |
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