Arid
DOI10.3389/fmicb.2017.01131
Impact of Aeolian Dry Deposition of Reactive Iron Minerals on Sulfur Cycling in Sediments of the Gulf of Aqaba
Blonder, Barak1; Boyko, Valeria1; Turchyn, Alexandra V.2; Antler, Gilad2; Sinichkin, Uriel1; Knossow, Nadav1; Klein, Rotem1; Kamyshny, Alexey, Jr.1
通讯作者Kamyshny, Alexey, Jr.
来源期刊FRONTIERS IN MICROBIOLOGY
ISSN1664-302X
出版年2017
卷号8
英文摘要

The Gulf of Aqaba is an oligotrophic marine system with oxygen-rich water column and organic carbon-poor sediments (<= 0.6% at sites that are not influenced by anthropogenic impact). Aeolian dust deposition from the Arabian, Sinai, and Sahara Deserts is an important source of sediment, especially at the deep-water sites of the Gulf, which are less affected by sediment transport from the Arava Desert during seasonal flash floods. Microbial sulfate reduction in sediments is inferred from the presence of pyrite (although at relatively low concentrations), the presence of sulfide oxidation intermediates, and by the sulfur isotopic composition of sulfate and solid-phase sulfides. Saharan dust is characterized by high amounts of iron minerals such as hematite and goethite. We demonstrated, that the resulting high sedimentary content of reactive iron(III) (hydr) oxides, originating from this aeolian dry deposition of desert dust, leads to fast re-oxidation of hydrogen sulfide produced during microbial sulfate reduction and limits preservation of reduced sulfur in the form of pyrite. We conclude that at these sites the sedimentary sulfur cycle may be defined as cryptic.


英文关键词Red Sea Gulf of Aqaba aeolian dust deposition highly reactive iron manganese sulfide oxidation intermediates cryptic sulfur cycle
类型Article
语种英语
国家Israel ; England
收录类别SCI-E
WOS记录号WOS:000403759800001
WOS关键词BACTERIAL SULFATE REDUCTION ; ZERO-VALENT SULFUR ; RED-SEA ; ORGANIC-MATTER ; ISOTOPE FRACTIONATION ; MARINE-SEDIMENTS ; DISSIMILATORY SULFATE ; LIQUID-CHROMATOGRAPHY ; AQUATIC SYSTEMS ; SPECTROPHOTOMETRIC DETERMINATION
WOS类目Microbiology
WOS研究方向Microbiology
来源机构Ben-Gurion University of the Negev
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/199051
作者单位1.Ben Gurion Univ Negev, Dept Geol & Environm Sci, Fac Nat Sci, Beer Sheva, Israel;
2.Univ Cambridge, Dept Earth Sci, Cambridge, England
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GB/T 7714
Blonder, Barak,Boyko, Valeria,Turchyn, Alexandra V.,et al. Impact of Aeolian Dry Deposition of Reactive Iron Minerals on Sulfur Cycling in Sediments of the Gulf of Aqaba[J]. Ben-Gurion University of the Negev,2017,8.
APA Blonder, Barak.,Boyko, Valeria.,Turchyn, Alexandra V..,Antler, Gilad.,Sinichkin, Uriel.,...&Kamyshny, Alexey, Jr..(2017).Impact of Aeolian Dry Deposition of Reactive Iron Minerals on Sulfur Cycling in Sediments of the Gulf of Aqaba.FRONTIERS IN MICROBIOLOGY,8.
MLA Blonder, Barak,et al."Impact of Aeolian Dry Deposition of Reactive Iron Minerals on Sulfur Cycling in Sediments of the Gulf of Aqaba".FRONTIERS IN MICROBIOLOGY 8(2017).
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