By a News Reporter-Staff News Editor at Science Letter -- Fresh data on Hydrology are presented in a new report. According to news reporting originating in Corvallis, Oregon, by NewsRx journalists, research stated, “Shallow sediment core samples from two locales in the Mesopotamian marshlands of Iraq were analyzed to characterize the extractable organic (lipid) compounds, and their sources and distributions after hydrological restoration by re-flooding of the marshes. Dried samples were extracted with a dichloro-methane/methanol mixture before analysis by gas chromatography-mass spectrometry (GC-MS).”
The news reporters obtained a quote from the research, “The major compounds were (n) under bar -alkanes, fatty acids and alcohols, steroids, terpenoids, hopanes, steranes, unresolved complex mixture (UCM), and plasticizers. The lipid compounds in Kurmashia (Al-Hammar marshes) were generally higher in concentration than in Abu Zirig (Central marshes), and decreased with core depths for both sites. This concentration decrease with core depth is attributed to transformation, biodegradation and variable input processes. The distribution patterns of the lipids in the sediment cores indicated that the Abu Zirig area was drier than Kurmashia before the re-flooding process. Furthermore, the concentration of the compounds in the surface sediment the Abu Zirig core was as high and similar to that in Kurmashia, reflecting the re-flooding impacts on the marsh and the revival of the wetland.”
According to the news reporters, the research concluded: “The major sources of these lipids were from natural terrestrial vegetation (35-66% for Abu Zirig; 40-49% for Kurmashia), microbial (plankton) residues and bacteria (27-52% for Abu Zirig; 39-43% for Kurmashia), with a minor contribution from anthropogenic sources including plastic wastes and petroleum (6-13% for Abu Zirig; 9-18% for Kurmashia).”
For more information on this research see: Impacts of Mesopotamian wetland re-flooding on the lipid biomarker distributions in sediments. Journal of Hydrology , 2018;558():20-28. Journal of Hydrology can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Hydrology - http://www.journals.elsevier.com/journal-of-hydrology/)
Our news correspondents report that additional information may be obtained by contacting A.I. Rushdi, ETAL, Corvallis, OR 97333, United States. Additional authors for this research include A.A.Z. DouAbul, S.S. Al-Maarofi and B.R.T. Simoneit.
The direct object identifier (DOI) for that additional information is: https://doi.org/10.1016/j.jhydrol.2018.01.030. This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.
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CITATION: (2018-04-27), Findings from A.I. Rushdi and Colleagues Update Understanding of Hydrology (Impacts of Mesopotamian wetland re-flooding on the lipid biomarker distributions in sediments), Science Letter, 1113, ISSN: 1538-9162, BUTTER® ID: 015563915
From the newsletter Science Letter.
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