Results 1 to 10 of about 398 (170)

Potential impacts of polymetallic nodule removal on deep-sea meiofauna [PDF]

Scientific Reports, 2021
Deep seabed mining is potentially imminent in the Clarion Clipperton Fracture Zone (CCFZ; northeast Pacific). Seabed collectors will remove polymetallic nodules and the surrounding surface sediments, both inhabited by meiofauna, along their path.
Ellen Pape, Tania Nara Bezerra, Hendrik Gheerardyn, Marius Buydens, Amanda Kieswetter, Ann Vanreusel   +5 more
doaj   +7 more sources

Impact of the Mining Process on the Near-Seabed Environment of a Polymetallic Nodule Area: A Field Simulation Experiment in a Western Pacific Area [PDF]

Sensors, 2023
With the consumption of terrestrial metal resources, deep-sea polymetallic nodule minerals have been widely exploited around the world. Therefore, the environmental impact of deep-sea polymetallic nodule mining cannot be ignored.
Bowen Li, Yonggang Jia, Zhihan Fan, Kai Li, Xuefa Shi   +4 more
doaj   +2 more sources

Checklist of ichthyoplankton of NORI-D polymetallic nodule exploration claim (eastern Clarion-Clipperton Zone) during winter 2021 [PDF]

Biodiversity Data Journal
There been increasing interest in polymetallic nodule mining within the Clarion-Clipperton Zone (CCZ). Polymetallic nodule mining within NORI-D will release a sediment plume within the water column and a previous mining collector test within the Nauru ...
Leah Bergman, Javier Montenegro, Charlotte Seid, Tiffany Bachtel, Frazer Mann, Erik Thuesen, Dhugal Lindsay, Jeffrey Drazen   +7 more
doaj   +4 more sources

From the Surface to the Deep-Sea: Bacterial Distributions across Polymetallic Nodule Fields in the Clarion-Clipperton Zone of the Pacific Ocean [PDF]

Frontiers in Microbiology, 2017
Marine bacteria regulate fluxes of matter and energy essential for pelagic and benthic organisms and may also be involved in the formation and maintenance of commercially valuable abyssal polymetallic nodules.
Markus V. Lindh, Brianne M. Maillot, Christine N. Shulse, Andrew J. Gooday, Diva J. Amon, Craig R. Smith, Matthew J. Church, Matthew J. Church   +7 more
doaj   +2 more sources

Copper-binding ligands in deep-sea pore waters of the Pacific Ocean and potential impacts of polymetallic nodule mining on the copper cycle [PDF]

Scientific Reports, 2021
The release of potentially toxic metals, such as copper (Cu), into the water column is of concern during polymetallic nodule mining. The bioavailability and thus toxicity of Cu is strongly influenced by its speciation which is dominated by organic ligand
Sophie A. L. Paul, Rebecca Zitoun, Ann Noowong, Mythili Manirajah, Andrea Koschinsky   +4 more
doaj   +2 more sources

No link between polymetallic nodules and anomalous oxygen concentration increases in benthic experiments from the Clarion Clipperton Zone [version 2; peer review: 2 approved, 1 approved with reservations, 1 not approved] [PDF]

F1000Research
* Background Polymetallic nodules in the deep sea of the Clarion Clipperton zone (CCZ) have been implicated in the abiotic production of oxygen during benthic chamber respirometer experiments.
Alexander P. Webber, Patrick Downes, Joaquim Bento, Leigh Marsh, Felipe S. Freitas, Michael Clarke   +5 more
doaj   +2 more sources

Biological responses to disturbance from simulated deep-sea polymetallic nodule mining. [PDF]

PLoS ONE, 2017
Commercial-scale mining for polymetallic nodules could have a major impact on the deep-sea environment, but the effects of these mining activities on deep-sea ecosystems are very poorly known. The first commercial test mining for polymetallic nodules was
Daniel O B Jones, Stefanie Kaiser, Andrew K Sweetman, Craig R Smith, Lenaick Menot, Annemiek Vink, Dwight Trueblood, Jens Greinert, David S M Billett, Pedro Martinez Arbizu, Teresa Radziejewska, Ravail Singh, Baban Ingole, Tanja Stratmann, Erik Simon-Lledó, Jennifer M Durden, Malcolm R Clark   +16 more
doaj   +2 more sources

Viral diversity and ecological functions in the world’s largest deep-sea mineral exploration region [PDF]

Nature Communications
Deep-sea polymetallic nodule provinces host distinct benthic prokaryotic communities, yet viruses that regulate them remain largely unknown. Here, we established the viral genome dataset of the Clarion-Clipperton Fracture Zone, the world’s largest deep ...
Bowen Hou, Lilan Zhang, Dong Sun
doaj   +2 more sources

Alpha radiation from polymetallic nodules and potential health risks from deep-sea mining [PDF]

Scientific Reports, 2023
In search for critical elements, polymetallic nodules at the deep abyssal seafloor are targeted for mining operations. Nodules efficiently scavenge and retain several naturally occurring uranium-series radioisotopes, which predominantly emit alpha ...
Jessica B. Volz, Walter Geibert, Dennis Köhler, Michiel M. Rutgers van der Loeff, Sabine Kasten   +4 more
doaj   +2 more sources

Size Reduction of CCZ Polymetallic Nodules Under Repeated Impact Fragmentation

Results in Engineering, 2020
Polymetallic nodules provide an alternative source of valuable metals. Nodules from the seabed of the Clarion Clipperton Zone (CCZ), a prospective mining area, are typically abundant at depths of around 5 ​km. Mining these nodules comprises excavation or
Edwin de Hoog
exaly   +3 more sources