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Benthic Foraminifera Abundance of Sedimentary Sequence in Gorgan Bay, North Iran
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Parisa Habibi   , Seyed Ahmad Babazadeh , Hamid Alizadeh ketek Lahijani , Hedyeh Abasiyan |
| , phabibi@inio.ac.ir |
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Abstract: (14070 Views) |
| The abundance of the benthic foraminifera has been studied along a 1.36m sediment core sample, taken
from 3.8m depth of water in the Gorgan bay, south of the Caspian Sea using sedimentological and
paleonotological proxies. Sedimentological studies show that the sediments are largely composed of silty
sand that rarely changes along the core. The average Total Organic Matter (TOM) and carbonate content
are 6.7% and 24.5%, respectively. Totally, six species of foraminifera were distinguished in the
sedimentary column, including Ammonia beccarii, Elphidium littoralle capsicum, Elphidiella brotzkajae,
Elphidium shochinae, Discorbis aguajoi, Cornuspira sp. which entirely belong to euryhalines. Although,
the abundance is high, the results show poor diversity of the species. The abundance and distribution of the
benthic foraminifera in the Gorgan Bay could be related to salinity changes, availability of nutrients as
well as sea level fluctuation. |
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| Keywords: Benthic foraminifera, Abundance, Diversity, Gorgan Bay. |
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Full-Text [PDF 126 kb]
(2245 Downloads)
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Type of Study: Research/ Original/ Regular Article |
Received: 2013/12/25 | Revised: 2014/03/15 | Accepted: 2013/12/25 | ePublished: 2013/12/25
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