Results 101 to 110 of about 309,760 (291)

Voltammetric Investigation Of Hydrothermal Iron Speciation

Frontiers in Marine Science, 2016
Hydrothermal vent fluids are highly enriched in iron (Fe) compared to ambient seawater, and organic ligands may play a role in facilitating the transport of some hydrothermal Fe into the open ocean.
Charlotte eKleint, Jeffrey Alistair Hawkes, Sylvia Gertrud Sander, Andrea eKoschinsky   +3 more
doaj   +1 more source

Vulnerability of tropical fish communities across depth in the central Indian Ocean

Conservation Biology, EarlyView.
Abstract Coral reefs and their fish communities below scuba diving depth (>30 m), in mesophotic coral ecosystems (MCEs) (∼30–150 m), in rariphotic (150–300 m), and in upper bathyal waters (300–500 m) are often underexplored, especially in the Indian Ocean.
Paris V. Stefanoudis, Nina M. de Villiers, Mariyam Shidha Afzal, Hana Amir, Farah Amjad, Aminath Shaha Hashim, Ahmed Riyaz Jauharee, Ryan Palmer, Alex D. Rogers, Mohamed Shimal, Shafiya Naeem, Mohamed Ahusan, Lucy C. Woodall   +12 more
wiley   +1 more source

The microbiology of deep-sea hydrothermal vent plumes: ecological and biogeographic linkages to seafloor and water column habitats

Frontiers in Microbiology, 2013
Hydrothermal plumes are an important yet understudied component of deep-sea vent microbial ecosystems. The significance of plume microbial processes can be appreciated from three perspectives: (1) mediation of plume biogeochemistry, (2) dispersal of ...
G. Dick, Karthik Anantharaman, B. Baker, M. Li, D. Reed, C. Sheik   +5 more
semanticscholar   +1 more source

The Overlooked Threat of Global Warming on Elasmobranch Fertility

Fish and Fisheries, EarlyView.
ABSTRACT Climate change is increasingly recognised as a critical threat to global biodiversity, yet its impacts on reproductive processes remain poorly understood in many marine taxa. Elasmobranchs (sharks, skates and rays) represent a particularly vulnerable group due to their peculiar life histories, low fecundity, and diverse reproductive modes.
Noémie Coulon, Eric Feunteun, Alexandre Carpentier, Anne Lizé   +3 more
wiley   +1 more source

Hydrothermal vents and prebiotic chemistry: a review

Boletín de la Sociedad Geológica Mexicana, 2016
Un sistema hidrotermal involucra la circulacion de fluidos calientes a profundidades variables en la corteza terrestre, y hasta la superficie. Las fuentes hidrotermales son sistemas cuyas fuentes de calor son magmas subyacentes o bien gradientes termicos de diverso origen, que generan corrientes de conveccion en las que circula agua caliente.
María Colín-García, Fernando Ortega-Gutiérrez, Alejandro Heredia, Alicia Negrón-Mendoza, Sergio Ramos-Bernal, Guadalupe Cordero, Antoni Camprubí, Hugo Beraldi   +7 more
openaire   +3 more sources

Separate Determination of Strontium and Barium Mass Fractions in Calcite and Dolomite in Carbonate Rocks by a Multi‐step Sequential Leaching Procedure

Geostandards and Geoanalytical Research, EarlyView.
Key Points A ten‐step sequential leaching procedure was applied to dissolve carbonate samples, with 10% of the sample mass dissolved in each step. Calcite dissolves preferentially compared with dolomite. Strontium and barium concentrations released in each step are proportional to the dissolved calcite‐to‐dolomite ratio.
Kaiyu Wu, Yuichiro Ueno, Jakub Surma, Chiyori Nakajo   +3 more
wiley   +1 more source

New insights into hydrothermal vent processes in the unique shallow-submarine arc-volcano, Kolumbo (Santorini), Greece

Scientific Reports, 2013
We report on integrated geomorphological, mineralogical, geochemical and biological investigations of the hydrothermal vent field located on the floor of the density-stratified acidic (pH ~ 5) crater of the Kolumbo shallow-submarine arc-volcano, near ...
S. Kilias, P. Nomikou, D. Papanikolaou, P. Polymenakou, A. Godelitsas, A. Argyraki, S. Carey, P. Gamaletsos, T. Mertzimekis, E. Stathopoulou, J. Goettlicher, R. Steininger, Konstantina Betzelou, I. Livanos, Christos A. Christakis, K. Bell, M. Scoullos   +16 more
semanticscholar   +1 more source

US graphite sourcing for electric vehicle battery applications

Journal of Industrial Ecology, EarlyView.
Abstract Graphite is a key material in electric vehicle batteries. Currently, China dominates global graphite production, and US sourcing of graphite could mitigate geopolitical supply‐chain risk. We explore the feasibility of domestic natural graphite sourcing in North America by characterizing current deposits and modeling the expected demand from ...
Sarah Gorman, Christian Hitt, Stephen Kesler, Gregory Keoleian, Hyung Chul Kim, Robert De Kleine, James E. Anderson   +6 more
wiley   +1 more source

Three‐Dimensional Spatially Constrained Sulfur Isotopes Highlight Processes Controlling Sulfur Cycling in the Near Surface of the Iheya North Hydrothermal System, Okinawa Trough

Geochemistry, Geophysics, Geosystems, 2018
Modern seafloor hydrothermal systems are unique environments in which many of the Earth's reservoirs, including the hydrosphere, biosphere, and geosphere, dynamically interact. Analysis of spatially constrained sulfur isotope compositions from fluids and
C. LaFlamme, S. P. Hollis, J. W. Jamieson, M. L. Fiorentini   +3 more
doaj   +1 more source

Diversity and phylogenetic analyses of bacteria from a shallow-water hydrothermal vent in Milos island (Greece)

Frontiers in Microbiology, 2013
Studies of shallow-water hydrothermal vents have been lagging behind their deep-sea counterparts. Hence, the importance of these systems and their contribution to the local and regional diversity and biogeochemistry is unclear.
D. Giovannelli, G. d’Errico, E. Manini, M. Yakimov, C. Vetriani   +4 more
semanticscholar   +1 more source