Journal
MARINE POLLUTION BULLETIN
Volume 62, Issue 5, Pages 1002-1012Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2011.02.036
Keywords
Thermal pollution; SST; Living benthic foraminifera; Species richness; East Mediterranean
Funding
- Earth Sciences Board, Ministry of National Infrastructures [038-17-27]
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The thermal pollution patch of Hadera power plant was used as a natural laboratory to evaluate the potential long-term effects of rise in Eastern Mediterranean SST on living benthic foraminifera. Their sensitivity to environmental changes makes foraminifera ideal for this study. Ten monthly sampling campaigns were performed in four stations located along a temperature gradient up to 10 degrees C from the discharge site of heated seawater to a control station. The SST along this transect varied between 25/18 degrees C in winter and 36/31 degrees C in summer. A significant negative correlation was found between SST in all stations and benthic foraminiferal abundance, species richness and diversity. The total foraminiferal abundance and species richness was particularly low at the thermally polluted stations especially during summer when SST exceeded 30 degrees C, but also throughout the entire year. This indicates that thermal pollution has a detrimental effect on benthic foraminifera, irrelevant to the natural seasonal changes in SST. (C) 2011 Elsevier Ltd. All rights reserved.
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