The Export of Iron and Other Trace Metals from Hydrothermal Vents and the Impact on Their Marine Biogeochemical Cycle

Sander, Sylvia G.; Koschinsky, Andrea

doi:10.1007/698_2016_4

Cited by 7 publications

(7 citation statements)

References 53 publications

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“…In marine habitats, localized sorption of nickel to twisted stalks may have a high impact. For example, at the Lo 'ihi Seamounts (24), dense mats of Fe minerals formed by microaerophilic Fe(II)-oxidizing bacteria are present and potentially scavenge transition metals exported from these vents, which has been reported for other hydrothermal vent systems (64). Furthermore, Fe mats formed by microaerophilic Fe(II)-oxidizing bacteria found on continental margin sediments (12) may impact the transition of organic compounds and transition metals from the water column into the sediment.…”

Section: Figmentioning

confidence: 91%

Microaerophilic Fe(II)-Oxidizing Zetaproteobacteria Isolated from Low-Fe Marine Coastal Sediments: Physiology and Composition of Their Twisted Stalks

Laufer

Nordhoff

Halama

et al. 2017

Appl Environ Microbiol

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Microaerophilic Fe(II) oxidizers are commonly found in habitats containing elevated Fe(II) and low O 2 concentrations and often produce characteristic Fe mineral structures, so-called twisted stalks or tubular sheaths. Isolates originating from freshwater habitats are all members of the Betaproteobacteria, while isolates from marine habitats belong almost exclusively to the Zetaproteobacteria. So far, only a few isolates of marine microaerophilic Fe(II) oxidizers have been described, all of which are obligate microaerophilic Fe(II) oxidizers and have been thought to be restricted to Fe-rich systems. Here, we present two new isolates of marine microaerophilic Fe(II)-oxidizing Zetaproteobacteria that originate from typical coastal marine sediments containing only low Fe concentrations (2 to 11 mg of total Fe/g of sediment [dry weight]; 70 to 100 M dissolved Fe 2ϩ in the porewater). The two novel Zetaproteobacteria share characteristic physiological properties of the Zetaproteobacteria group, even though they come from low-Fe environments: the isolates are obligate microaerophilic Fe(II) oxidizers and, like most isolated Zetaproteobacteria, they produce twisted stalks. We found a low organic carbon content in the stalks (ϳ0.3 wt%), with mostly polysaccharides and saturated aliphatic chains (most likely lipids). The Fe minerals in the stalks were identified as lepidocrocite and possibly ferrihydrite. Immobilization experiments with Ni 2ϩ showed that the stalks can function as a sink for trace metals. Our findings show that obligate microaerophilic Fe(II) oxidizers belonging to the Zetaproteobacteria group are not restricted to Fe-rich environments but can also be found in low-Fe marine environments, which increases their overall importance for the global biogeochemical Fe cycle.IMPORTANCE So far, only a few isolates of benthic marine microaerophilic Fe(II) oxidizers belonging to the Zetaproteobacteria exist, and most isolates were obtained from habitats containing elevated Fe concentrations. Consequently, it was thought that these microorganisms are important mainly in habitats with high Fe concentrations. The two novel isolates of Zetaproteobacteria that are presented in the present study were isolated from typical coastal marine sediments that do not contain elevated Fe concentrations. This increases the knowledge about possible habitats in which Zetaproteobacteria can exist. Furthermore, we show that the physiology and the typical organo-mineral structures (twisted stalks) that are produced by the isolates do not notably differ from the physiology and the cell-mineral structures of

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Section: Figmentioning

confidence: 91%

Microaerophilic Fe(II)-Oxidizing Zetaproteobacteria Isolated from Low-Fe Marine Coastal Sediments: Physiology and Composition of Their Twisted Stalks

Laufer

Nordhoff

Halama

et al. 2017

Appl Environ Microbiol

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“…The Co, Ni, Cd, Cr, Cu, Zn, Se, and As, are well known to be the bio-essential trace metals showing a similar to the nutrients vertical distribution pattern reflecting a change in primary productivity in the ocean water [44]. In the water of hydrothermal biotope, Fe and other heavy metals are strongly complexed by organic matter [6,47,48]. The methane and sulphide oxidizing bacterial consortium need heavy metals Cr, Fe, Co, and W, as co-ferments for catalysing biochemical processes [49,50].…”

Section: Discussionmentioning

confidence: 99%

“…This might imply that the bioaccumulation of elements occurs not directly, but indirectly depending not only on their total content in the biotope water but mainly on the chemical element speciation, and the latter determines a bioavailability. An important role of the organic complexes of Fe, Cu, and the other heavy metals in their flux from hydrothermal vents was evidenced [6,47,48]. Heavy metals in the biotope water are associated with the complexes of dissolved amino acids, that stabilize their precipitation and thus promote increasing the flow of metals from vents into the ocean [6,47,48].…”

Section: Concentration Function Of the Bottom Faunamentioning

confidence: 99%

“…Hydrothermal venting is known to be a source of many trace elements in the ocean [1][2][3][4][5][6]. Recently, a strong impact of hydrothermal fluids on biogeochemical cycles of metals in the ocean has become apparent thanks to numerous large-scale studies in the framework of the international GEOTRACERS program (www.geotraces.org, 3 September 2021).…”

Section: Introductionmentioning

confidence: 99%

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Some Biogeochemical Characteristics of the Trace Element Bioaccumulation in the Benthic Fauna of the Piip Volcano (The Southwestern Bering Sea)

et al. 2021

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The Piip Volcano is a submarine volcanic edifice occupying the central part of the Volcanologists Massif in the southwestern Bering Sea, with two tops, southern and northern. The minimum depth of the northern top is located at 368 m, and of the southern at 464 m. Active hydrothermal venting occurring at both summits of the volcano supports diverse biological communities, including animals specific for chemosynthetic habitats. In benthic organisms inhabiting the northern and southern tops of the Piip Volcano, for the first time, we examined distribution patterns of the following trace elements: titanium, vanadium, chromium, manganese, iron, nickel, copper, zinc, arsenic, selenium, zirconium, molybdenum, silver, cadmium, antimony, barium, tungsten, lead, bismuth, and uranium. The element contents were quantified by the ICP-MS. Total carbon (TC) and total inorganic carbon (TIC) were determined using a Shimadzu TOC-L-CPN and mineral composition of sediment was determined using the XRD. In the water of the biotope from the northern top, concentrations of Mn, Zn, Ag, Cd, Sb, W, Pb were 2–6 times, and Ba was 50 times higher than those from the southern top. This was attributed to the lower temperature of fluids emanating at the southern top. An abundant population of Calyptogena pacifica (Bivalvia: Vesicomyidae: Pliocardiinae) was found only at the southern top. The main target of most trace elements, such as Fe, V, Cr, Co, Ni, Zn, As, Mo, Ag, Cd, W, Pb, Bi, and U were the soft parts of Calyptogena pacifica (with high TOC content, on average 53.1% in gills and 49.6% in the rest of the body). Gills were characterized by particular high contents (>100 µg g−1 dry w.) of Zn, Cd, Fe, Ni, Cu, and Pb, which can form sulphides or be associated with them. Shells of C. pacifica, as well as Brachiopoda, were depleted in these elements, as well as tissues of the carnivores Paguridae (Crustacea) and Actiniaria (Anthozoa). In suspension feeders from both tops, the lower contents of most elements were detected. Estimation of Biological Concentration Factor (BCF) for most elements varied from 102 to 104, reaching n105 for Ni, Zn, Ag, Cd, and Pb. A significant difference in BCF values between Fe and Mn was revealed.

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“…Previous hydrothermal studies have mainly focused on near-field hydrothermal products, such as sulfide structures (e.g., Kato et al, 2010;Peng et al, 2011b;Jaeschke et al, 2012;Gibson et al, 2013;Reeves et al, 2014), hydrothermally influenced sediments (e.g., Schouten et al, 2003;Shulga et al, 2010;Shulga and Peresypkin, 2012), and rising plumes (e.g., Bennett et al, 2011;Sands et al, 2012;Estapa et al, 2015), in relation to the characteristics of inorganic (elements and minerals) and organic (lipids) geochemistry, biogeography and biodiversity. However, a growing number of studies have focused on the microbial ecology and biogeochemical cycles involving the transport of metals and organic carbon in non-buoyant plumes (e.g., Bennett et al, 2008;Bennett et al, 2011;Lesniewski et al, 2012;Sylvan et al, 2012;Li et al, 2015;Sander and Koschinsky, 2016). Of particular interest has been hydrothermally derived dissolved Fe, which can be dispersed over thousands of kilometers away from its source into the open ocean and contribute to the global oceanic Fe budget (e.g., Toner et al, 2012;Fitzsimmons et al, 2014Fitzsimmons et al, , 2017Resing et al, 2015;Kleint et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Geochemical impacts of hydrothermal activity on surface deposits at the Southwest Indian Ridge

Pan

Qinye

Zhou

et al. 2018

Deep Sea Research Part I: Oceanographic Research Papers

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Submarine hydrothermal circulation has attracted much scientific interest since seafloor hydrothermal activity was first observed in the 1970s; an area of particular interest is the impact of exported inorganic and organic materials from hydrothermal vent systems into the open ocean. In 2007, the first active hydrothermal vent field, with vent fluid temperatures up to 379 °C, was discovered at the ultraslow spreading Southwest Indian Ridge (SWIR), where active vents are much less abundant than fast spreading ridges, and the effect of hydrothermal extrusion on surface sediments is not fully understood. To explore how geochemical proxy signatures respond to hydrothermal activity, we investigated the distributions of elements, minerals and lipids in surficial normal marine sediments, metalliferous sediments and low-temperature hydrothermal deposits collected from the SWIR. The results showed different effects of hydrothermal activity on the surface deposits. The normal marine sediments were predominantly calcium carbonate characterized by >42% CaO and >90% calcite, with a significant autochthonous marine contribution to organic matter (OM) and a predominance of lower molecular weight alkanols and fatty acids; they were uninfluenced by hydrothermal activity but received some terrigenous input represented by abundant high molecular weight n-alkanes with an odd-over-even predominance. The near-field metalliferous sediments and hydrothermal deposits were very different. Some near-field metalliferous sediments were influenced by low-temperature hydrothermal activity, and their distributions of elements and minerals were similar to those of hydrothermal deposits, which were characterized by abundant Fe/Si and opal/nontronite. Other near-field metalliferous sediments were evidently influenced by mixing of high-temperature hydrothermal sulfides typically containing abundant Cu/Zn. With respect to the organic matter assemblages, near-field deposits contained little evidence for thermal maturation of organic matter and all were characterized by a strong microbial signature, including hopanoids, isoprenoidal and non-isoprenoidal dialkyl glycerol ether lipids, and low molecular weight n-alkanes with an even carbon number predominance. The far-field metalliferous sediments, despite the influence of non-buoyant plumes and slightly higher concentrations of hydrothermal-derived metals (e.g., Fe, Cu and Zn), had the same distribution of organic lipids and major mineral composition (>90% calcite) as did normal marine sediments. Thus, the influence of non-buoyant plume inputs appears to have been minimal possibly due to the dilution of in situ microorganisms by normal marine organisms in sediment and seawater. Furthermore, these characteristics indicate inorganic indices based on abundant metal elements derived from the hydrothermal systems (such as Fe/Cu/Zn content, ∑REE/Fe, the ternary diagram of Fe, Cu×100 and Ca) are more sensitive, serving as better proxies than organic matter assemblages to differentiate the effects of diverse h...

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The Export of Iron and Other Trace Metals from Hydrothermal Vents and the Impact on Their Marine Biogeochemical Cycle

Cited by 7 publications

References 53 publications

Microaerophilic Fe(II)-Oxidizing Zetaproteobacteria Isolated from Low-Fe Marine Coastal Sediments: Physiology and Composition of Their Twisted Stalks

Microaerophilic Fe(II)-Oxidizing Zetaproteobacteria Isolated from Low-Fe Marine Coastal Sediments: Physiology and Composition of Their Twisted Stalks

Some Biogeochemical Characteristics of the Trace Element Bioaccumulation in the Benthic Fauna of the Piip Volcano (The Southwestern Bering Sea)

Geochemical impacts of hydrothermal activity on surface deposits at the Southwest Indian Ridge

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