scholarly journals Isolation of Aerobic Anoxygenic Photosynthetic Bacteria from Black Smoker Plume Waters of the Juan de Fuca Ridge in the Pacific Ocean

1998 ◽  
Vol 64 (1) ◽  
pp. 337-341 ◽  
Author(s):  
Vladimir Yurkov ◽  
J. Thomas Beatty
Keyword(s):  
Photosynthetic Bacteria ◽  
Deep Ocean ◽  
Juan De Fuca Ridge ◽  
Black Smoker ◽  
Light Harvesting Complex ◽  
The Pacific ◽  
Juan De Fuca ◽  
The Pacific Ocean ◽  
Anoxygenic Photosynthetic Bacteria

ABSTRACT A strain of the aerobic anoxygenic photosynthetic bacteria was isolated from a deep-ocean hydrothermal vent plume environment. The in vivo absorption spectra of cells indicate the presence of bacteriochlorophyll a incorporated into light-harvesting complex I and a reaction center. The general morphological and physiological characteristics of this new isolate are described.

scholarly journals Isolation of Tellurite- and Selenite-Resistant Bacteria from Hydrothermal Vents of the Juan de Fuca Ridge in the Pacific Ocean

2002 ◽  
Vol 68 (9) ◽  
pp. 4613-4622 ◽  
Author(s):  
Christopher Rathgeber ◽  
Natalia Yurkova ◽  
Erko Stackebrandt ◽  
J. Thomas Beatty ◽  
Vladimir Yurkov
Keyword(s):  
Hydrothermal Vents ◽  
Deep Ocean ◽  
Juan De Fuca Ridge ◽  
Resistant Bacteria ◽  
Ocean Water ◽  
Bacterial Films ◽  
The Pacific ◽  
Juan De Fuca ◽  
The Pacific Ocean ◽  
Reducing Bacteria

ABSTRACT Deep-ocean hydrothermal-vent environments are rich in heavy metals and metalloids and present excellent sites for the isolation of metal-resistant microorganisms. Both metalloid-oxide-resistant and metalloid-oxide-reducing bacteria were found. Tellurite- and selenite-reducing strains were isolated in high numbers from ocean water near hydrothermal vents, bacterial films, and sulfide-rich rocks. Growth of these isolates in media containing K2TeO3 or Na2SeO3 resulted in the accumulation of metallic tellurium or selenium. The MIC of K2TeO3 ranged from 1,500 to greater than 2,500 μg/ml, and the MIC of Na2SeO3 ranged from 6,000 to greater than 7,000 μg/ml for 10 strains. Phylogenetic analysis of 4 of these 10 strains revealed that they form a branch closely related to members of the genus Pseudoalteromonas, within the γ-3 subclass of the Proteobacteria. All 10 strains were found to be salt tolerant, pH tolerant, and thermotolerant. The metalloid resistance and morphological, physiological, and phylogenetic characteristics of newly isolated strains are described.

Vertical distribution and characterization of aerobic phototrophic bacteria at the Juan de Fuca Ridge in the Pacific Ocean

2008 ◽  
Vol 97 (3) ◽  
pp. 235-244 ◽  
Author(s):  
Christopher Rathgeber ◽  
Michael T. Lince ◽  
Jean Alric ◽  
Andrew S. Lang ◽  
Elaine Humphrey ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Vertical Distribution ◽  
Phototrophic Bacteria ◽  
Juan De Fuca Ridge ◽  
Fuca Ridge ◽  
The Pacific ◽  
Juan De Fuca ◽  
The Pacific Ocean ◽  
Aerobic Phototrophic Bacteria

Composition and dissolution of black smoker particulates from active vents on the Juan de Fuca Ridge

1987 ◽  
Vol 92 (B11) ◽  
pp. 11347-11363 ◽  
Author(s):  
Richard A. Feely ◽  
Maureen Lewison ◽  
Gary J. Massoth ◽  
Gillian Robert-Baldo ◽  
J. William Lavelle ◽  
...  
Keyword(s):  
Juan De Fuca Ridge ◽  
Black Smoker ◽  
Fuca Ridge ◽  
Juan De Fuca

scholarly journals Study of Deep-Ocean Ferromanganese Crusts Ore Components

2021 ◽  
Author(s):  
Alla A. Novakova ◽  
Dmitrii S. Novikov
Keyword(s):  
Lower Layer ◽  
Deep Ocean ◽  
Ferromanganese Crust ◽  
Layer By Layer ◽  
Ferromanganese Crusts ◽  
The Pacific ◽  
Bacterial Mats ◽  
The Pacific Ocean ◽  
Mn Oxides ◽  
Crystallization Degree

A complex layer-by-layer morphology and phase analysis of a ferromanganese crust aged about 70 million years, extracted from the rise of the Magellan Mountains of the Pacific Ocean, was carried out using several physics methods: digital optical microscopy, scanning electron microscopy with high resolution, X-ray fluorescence and diffraction analysis and Mossbauer spectroscopy. This analysis showed that the crust is an association of several minerals with various dispersion and crystallization degree, between which fossilized bacterial mats with Fe- and Mn- oxides are located. These phenomena indicate the biogenic nature of the crust. Changes in the crusts phase composition from the lower layer to the upper layer indicate changes in the external environmental conditions during their formation.

Microbial diversity of a sulfide black smoker in main endeavour hydrothermal vent field, Juan de Fuca Ridge

2009 ◽  
Vol 47 (3) ◽  
pp. 235-247 ◽  
Author(s):  
Huaiyang Zhou ◽  
Jiangtao Li ◽  
Xiaotong Peng ◽  
Jun Meng ◽  
Fengping Wang ◽  
...  
Keyword(s):  
Microbial Diversity ◽  
Hydrothermal Vent ◽  
Juan De Fuca Ridge ◽  
Black Smoker ◽  
Fuca Ridge ◽  
Juan De Fuca ◽  
Main Endeavour ◽  
Hydrothermal Vent Field

scholarly journals Ocean-Floor Sediments as a Resource of Rare Earth Elements: An Overview of Recently Studied Sites

Minerals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 142
Author(s):  
Jelena Milinovic ◽  
Francisco J. L. Rodrigues ◽  
Fernando J. A. S. Barriga ◽  
Bramley J. Murton
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Economic Value ◽  
Deep Ocean ◽  
Economic Cost ◽  
Ocean Floor ◽  
The Pacific ◽  
Ree Distribution ◽  
The Pacific Ocean ◽  
Renewable Energy Generation

The rare earth elements (REE), comprising 15 elements of the lanthanum series (La-Lu) together with yttrium (Y) and scandium (Sc), have become of particular interest because of their use, for example, in modern communications, renewable energy generation, and the electrification of transport. However, the security of supply of REE is considered to be at risk due to the limited number of sources, with dependence largely on one supplier that produced approximately 63% of all REE in 2019. As a result, there is a growing need to diversify supply. This has resulted in the drive to seek new resources elsewhere, and particularly on the deep-ocean floor. Here, we give a summary of REE distribution in minerals, versatile applications, and an update of their economic value. We present the most typical onshore methods for the determination of REE and examine methods for their offshore exploration in near real time. The motivation for this comes from recent studies over the past decade that showed ΣREE concentrations as high as 22,000 ppm in ocean-floor sediments in the Pacific Ocean. The ocean-floor sediments are evaluated in terms of their potential as resources of REE, while the likely economic cost and environmental impacts of deep-sea mining these are also considered.

scholarly journals HISTORY OF COLUMBIA RIVER JETTIES

2010 ◽  
Vol 1 (1) ◽  
pp. 32 ◽  
Author(s):  
R. E. Hickson ◽  
F. W. Rodolf
Keyword(s):  
United States ◽  
San Francisco ◽  
Pacific Coast ◽  
Columbia River ◽  
The United States ◽  
The Pacific ◽  
Juan De Fuca ◽  
History Of ◽  
International Boundary ◽  
The Pacific Ocean

Columbia River is the largest river on the Pacific Coast of the United States. It heads at Columbia Lake in British Columbia, about 80 miles north of the international boundary, and flows northward parallel to the summit of the Rocky Mountains for about 185 miles, thence turns back and flows generally southward through Upper and Lower Arrow Lakes and enters the United States about 25 miles west of the northeast corner of the State of Washington. Thence the river flows by a sinuous course southward, westward, and southeastward to the Oregon-Washington boundary, thence generally westward between the two states, discharging into the Pacific Ocean 583 statute miles north of San Francisco Bay and 154 miles south of the Straits of Juan de Fuca (distances computed from differences in latitude). The river has a total length of 1,210 miles, of which 750 miles are in the United States.

scholarly journals The Unique 16S rRNA Genes of Piezophiles Reflect both Phylogeny and Adaptation

2006 ◽  
Vol 73 (3) ◽  
pp. 838-845 ◽  
Author(s):  
Federico M. Lauro ◽  
Roger A. Chastain ◽  
Lesley E. Blankenship ◽  
A. Aristides Yayanos ◽  
Douglas H. Bartlett
Keyword(s):  
16S Rrna ◽  
Deep Ocean ◽  
Elevated Pressure ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Deep Trench ◽  
The Pacific ◽  
Geographic Origins ◽  
Physiological Adaptations ◽  
The Pacific Ocean

ABSTRACT In the ocean's most extreme depths, pressures of 70 to 110 megapascals prevent the growth of all but the most hyperpiezophilic (pressure-loving) organisms. The physiological adaptations required for growth under these conditions are considered to be substantial. Efforts to determine specific adaptations permitting growth at extreme pressures have thus far focused on relatively few γ-proteobacteria, in part due to the technical difficulties of obtaining piezophilic bacteria in pure culture. Here, we present the molecular phylogenies of several new piezophiles of widely differing geographic origins. Included are results from an analysis of the first deep-trench bacterial isolates recovered from the southern hemisphere (9.9-km depth) and of the first gram-positive piezophilic strains. These new data allowed both phylogenetic and structural 16S rRNA comparisons among deep-ocean trench piezophiles and closely related strains not adapted to high pressure. Our results suggest that (i) the Circumpolar Deep Water acts as repository for hyperpiezophiles and drives their dissemination to deep trenches in the Pacific Ocean and (ii) the occurrence of elongated helices in the 16S rRNA genes increases with the extent of adaptation to growth at elevated pressure. These helix changes are believed to improve ribosome function under deep-sea conditions.

Metalloid Reducing Bacteria Isolated from Deep Ocean Hydrothermal Vents of the Juan de Fuca Ridge, Pseudoalteromonas telluritireducens sp. nov. and Pseudoalteromonas spiralis sp. nov

2006 ◽  
Vol 53 (5) ◽  
pp. 449-456 ◽  
Author(s):  
Christopher Rathgeber ◽  
Natalia Yurkova ◽  
Erko Stackebrandt ◽  
Peter Schumann ◽  
Elaine Humphrey ◽  
...  
Keyword(s):  
Hydrothermal Vents ◽  
Deep Ocean ◽  
Juan De Fuca Ridge ◽  
Fuca Ridge ◽  
Juan De Fuca ◽  
Reducing Bacteria
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