scholarly journals Cultured and genetic diversity, and activities of sulfur-oxidizing bacteria in low-temperature hydrothermal fluids of the North Fiji Basin

2004 ◽  
Vol 266 ◽  
pp. 65-76 ◽  
Author(s):  
L Podgorsek ◽  
R Petri ◽  
JF Imhoff
2002 ◽  
Vol 66 (8) ◽  
pp. 1409-1427 ◽  
Author(s):  
Andrea Koschinsky ◽  
Richard Seifert ◽  
Peter Halbach ◽  
Michael Bau ◽  
Sabine Brasse ◽  
...  

1994 ◽  
Vol 40 (8) ◽  
pp. 690-697 ◽  
Author(s):  
Pascale Durand ◽  
Afeda Benyagoub ◽  
Daniel Prieur

Sulfur-oxidizing bacteria (n = 161) were enriched and isolated from samples of vent water, invertebrates, and chimney rocks collected at two deep-sea hydrothermal vents (2000 m) in back-arc basins from the southwestern Pacific: the North Fiji Basin and the Lau Basin. Several types of heterotrophic sulfur-oxidizing bacteria were repeatedly isolated. They oxidized thiosulfate either to sulfate (acid producing) or to polythionate (base producing). In most of the acid-producing cultures, thiosulfate was transitorily oxidized to polythionate. All of the bacteria were Gram negative, 37% were fermentative, and 88% were denitrifiers or nitrate reducers. Numerical taxonomy and analysis of the G+C content showed that they belong to several genera including Pseudomonas, Acinetobacter, and Vibrio.Key words: hydrothermal vent, culturable thiosulfate-oxidizing bacteria, numerical taxonomy.


1991 ◽  
Vol 93 (3-4) ◽  
pp. 209-218 ◽  
Author(s):  
Daniel Grimaud ◽  
Jun-Ichiro Ishibashi ◽  
Yves Lagabrielle ◽  
Jean-Marie Auzende ◽  
Tetsuro Urabe

1994 ◽  
Vol 128 (3-4) ◽  
pp. 183-197 ◽  
Author(s):  
Jun-Ichiro Ishibashi ◽  
Hiroshi Wakita ◽  
Yukihiro Nojiri ◽  
Daniel Grimaud ◽  
Philippe Jean-Baptiste ◽  
...  

1997 ◽  
Vol 35 (7) ◽  
pp. 187-195 ◽  
Author(s):  
Binle Lin ◽  
K. Futono ◽  
A. Yokoi ◽  
M. Hosomi ◽  
A. Murakami

Establishing economic treatment technology for safe disposal of photo-processing waste (PW) has most recently become an urgent environmental concern. This paper describes a new biological treatment process for PW using sulfur-oxidizing bacteria (SOB) in conjunction with activated carbon (AC). Batch-type acclimation and adsorption experiments using SOB/PAC, SOB/PNAC, and SOB reactor type systems demonstrated that AC effectively adsorbs the toxic/refractory compounds which inhibit thiosulfate oxidization of SOB in PW. Thus, to further clarify the effect of AC, we performed a long-term (≈ 160 d) continuous-treatment experiment on 4- to 8-times dilution of PW using a SOB/GAC system which simulated a typical wastewater treatment system based on an aerobic activated sludge process that primarily uses acclimated SOB. The thiosulfate load and hydraulic retention time (HRT) were fixed during treatment such that they ranged from 0.8-3.7 kg S2O32-/l/d and 7.7-1.9 d, respectively. As expected, continuous treatment led to breakthrough of the adsorption effect of GAC. Renewing the GAC and continuing treatment for about 10 d demonstrated good treatment effectiveness.


2019 ◽  
Vol 84 (3) ◽  
pp. 400-419 ◽  
Author(s):  
Molly Carney ◽  
Jade d'Alpoim Guedes ◽  
Kevin J. Lyons ◽  
Melissa Goodman Elgar

This project considered the deposition history of a burned structure located on the Kalispel Tribe of Indians ancestral lands at the Flying Goose site in northeastern Washington. Excavation of the structure revealed stratified deposits that do not conform to established Columbia Plateau architectural types. The small size, location, and absence of artifacts lead us to hypothesize that this site was once a non-domestic structure. We tested this hypothesis with paleoethnobotanical, bulk geoarchaeological, thin section, and experimental firing data to deduce the structural remains and the post-occupation sequence. The structure burned at a relatively low temperature, was buried soon afterward with imported rubified sediment, and was exposed to seasonal river inundation. Subsequently, a second fire consumed a unique assemblage of plant remains. Drawing on recent approaches to structured deposition and historic processes, we incorporate ethnography to argue that this structure was a menstrual lodge. These structures are common in ethnographic descriptions, although no menstrual lodges have been positively identified in the archaeological record of the North American Pacific Northwest. This interpretation is important to understanding the development and time depth of gendered practices of Interior Northwest groups.


Lithosphere ◽  
2014 ◽  
Vol 6 (6) ◽  
pp. 473-482 ◽  
Author(s):  
Thibaud Simon-Labric ◽  
Gilles Y. Brocard ◽  
Christian Teyssier ◽  
Peter A. van der Beek ◽  
Peter W. Reiners ◽  
...  

2021 ◽  
Author(s):  
Dalton J. Leprich ◽  
Beverly E. Flood ◽  
Peter R. Schroedl ◽  
Elizabeth Ricci ◽  
Jeffery J. Marlow ◽  
...  

AbstractCarbonate rocks at marine methane seeps are commonly colonized by sulfur-oxidizing bacteria that co-occur with etch pits that suggest active dissolution. We show that sulfur-oxidizing bacteria are abundant on the surface of an exemplar seep carbonate collected from Del Mar East Methane Seep Field, USA. We then used bioreactors containing aragonite mineral coupons that simulate certain seep conditions to investigate plausible in situ rates of carbonate dissolution associated with sulfur-oxidizing bacteria. Bioreactors inoculated with a sulfur-oxidizing bacterial strain, Celeribacter baekdonensis LH4, growing on aragonite coupons induced dissolution rates in sulfidic, heterotrophic, and abiotic conditions of 1773.97 (±324.35), 152.81 (±123.27), and 272.99 (±249.96) μmol CaCO3 • cm−2 • yr−1, respectively. Steep gradients in pH were also measured within carbonate-attached biofilms using pH-sensitive fluorophores. Together, these results show that the production of acidic microenvironments in biofilms of sulfur-oxidizing bacteria are capable of dissolving carbonate rocks, even under well-buffered marine conditions. Our results support the hypothesis that authigenic carbonate rock dissolution driven by lithotrophic sulfur-oxidation constitutes a previously unknown carbon flux from the rock reservoir to the ocean and atmosphere.


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