Heavy metals in the benthic foraminifera from the coastal lagoons,Red Sea,Egypt: indicators of anthropogenic impact on environment (case study) |
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Authors: | Hashem Abbas Madkour Mohamed Youssef Ali |
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Institution: | (1) National Institute of Oceanography and Fisheries, Hurghada Research Station, Red Sea branch, Hurghada, Egypt;(2) Geology Department, Faculty of Science, South Valley University, Qena, 83523, Egypt |
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Abstract: | Concentrations of Fe, Mn, Zn, Cu, Pb, Ni, and Cd were measured in several species and genera of Recent benthic foraminifera
from three coastal lagoons, namely Abu-Shaar, Umm al-Huwaytat, and Marsa Shuni lagoons located along the Egyptian Red Sea
coast. Spatially significant differences in the metal concentrations of benthic foraminifera were recorded among different
sites. However, some foraminiferal species display deformation in their coiling, general shape of chambers and the apertures.
Abu-Shaar and Umm al-Huwaytat lagoons are virtually influenced by anthropogenic activities while Marsa Shuni lagoon is affected
by natural inputs. Benthic foraminifer shows high concentrations of Fe and Mn, especially in Umm al-Huwaytat lagoon. Foraminiferal
black tests support this result and reflect selectivity for iron absorption. Among the metals analyzed, Cd, Pb, and Cu showed
significant high concentrations in benthic foraminifera at the study areas. The anthropogenic activities and natural inputs
are responsible for the abnormalities in benthic foraminifera. Therefore, benthic foraminifera can be used as a good indicator
of the environmental changes. |
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Keywords: | Benthic foraminifera Heavy metals Coastal lagoons Red Sea |
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