Results 51 to 60 of about 2,744 (183)

Abundant interactions and feedbacks between aquatic deoxygenation and the other planetary boundaries suggest “unsafe” levels of oxygen loss with far‐reaching impacts

Limnology and Oceanography, Volume 71, Issue 7, July 2026.
Abstract Oxygen is critical for nearly all life on Earth, including aquatic species that breathe dissolved oxygen in both freshwater and marine systems. The rapid, global, and anthropogenic loss of dissolved oxygen known as “aquatic deoxygenation” threatens life in these environments, the human communities that depend on them, and Earth system ...
Erica M. Ferrer, Yassir A. Eddebbar, Shailja Gangrade, Lillian R. McCormick, Ariel K. Pezner, De'Marcus Robinson, Véronique Garçon, Kevin C. Rose, Lisa A. Levin   +8 more
wiley   +1 more source

Anomalous oxygen concentration increases in benthic experiments from the Clarion Clipperton Zone are not related to polymetallic nodules [version 1; peer review: 2 approved, 1 not approved]

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   +1 more source

Heavy-Metal-Resistant Microorganisms in Deep-Sea Sediments Disturbed by Mining Activity: An Application Toward the Development of Experimental in vitro Systems

Frontiers in Marine Science, 2019
Future mining of polymetallic nodules in the Clarion Clipperton Zone (Northeastern Pacific) is expected to affect all benthic ecosystems. The diversity, distribution, and environmental functions of microorganisms inhabiting abyssal sediments are barely ...
Benjamin Gillard, Benjamin Gillard, Damianos Chatzievangelou, Laurenz Thomsen, Matthias S. Ullrich   +4 more
doaj   +1 more source

Meiofauna in a Potential Deep-Sea Mining Area—Influence of Temporal and Spatial Variability on Small-Scale Abundance Models

Diversity, 2020
In large areas of the Clarion Clipperton Fracture Zone (northeast Pacific), exploration of deep-sea polymetallic nodules as a potential source of high-technology metals is ongoing. Deep-sea mining may have a severe impact on the benthic communities. Here,
Katja Uhlenkott, Annemiek Vink, Thomas Kuhn, Benjamin Gillard, Pedro Martínez Arbizu   +4 more
doaj   +1 more source

Environmental considerations for impact and preservation reference zones for deep-sea polymetallic nodule mining [PDF]

Marine Policy, 2020
Abstract Development of guidance for environmental management of the deep-sea mining industry is important as contractors plan to move from exploration to exploitation activities. Two priorities for environmental management are monitoring and mitigating the impacts and effects of activities.
Jones, Daniel O.B., Ardron, Jeff A., Colaço, Ana, Durden, Jennifer M.   +3 more
openaire   +2 more sources

Different Ferromanganese Concretion Morphologies Host Distinct Microbial Communities and Metal Accumulation Patterns in the Baltic Sea

Environmental Microbiology, Volume 28, Issue 7, July 2026.
We investigated how microbes influence the metal accumulation and release in Fe‐Mn concretions from the Gulf of Finland using microcosm incubation experiments. We studied three main concretion morphotypes: crust, discoidal, and spheroidal. Microbes enhanced metal accumulation in discoidal and spheroidal morphotypes.
Renata Majamäki, Joonas Wasiljeff, Lotta Purkamo, Jenni Hultman, Lukas Kohl, Eero Asmala, Pirjo Yli‐Hemminki, Kirsten S. Jørgensen, Johanna Muurinen, Joonas J. Virtasalo   +9 more
wiley   +1 more source

Deep Cyclones and Benthic Storms in the Western North Atlantic: New Insights From a Regional Circulation Model

Journal of Geophysical Research: Oceans, Volume 131, Issue 5, May 2026.
Abstract Deep cyclones (DCs) are mesoscale, deep‐reaching features that develop near meander troughs of large‐scale currents, such as the Gulf Stream. Although, in some aspects, they could be viewed as oceanic analogs of synoptic‐scale cyclones in the mid‐latitude atmosphere, their dynamics and impacts are not fully understood.
Si‐Yuan Sean Chen, Olivier Marchal, Magdalena Andres, Wilford Gardner, Jiayan Yang, Thomas Peacock   +5 more
wiley   +1 more source

Enrichment Characteristics of Critical Metals in Deep-Sea Ferromanganese Crusts and Polymetallic Nodules

Journal of the Korean Society of Mineral and Energy Resources Engineers
Woojoon Kee, Seungyeol Lee
semanticscholar   +2 more sources

Multi‐Omic Assessment of Microbial Communities and Their Polyketide Biosynthetic Potential Across Abyssal Sediments

Environmental Microbiology, Volume 28, Issue 5, May 2026.
Abyssal sediments were assessed for taxonomic diversity and polyketide biosynthetic potential and compared to metagenomic and metabolomic assessments of the same sediments. Biodiversity differences were documented across biogeochemical regimes with the results providing baseline awareness of what might be lost should deep‐sea microbiomes be disrupted ...
Hans W. Singh, Johanna Gutleben, Alexander Bogdanov, Alexander B. Chase, Alyssa Demko, Sheila Podell, Brian Haley, Paul R. Jensen   +7 more
wiley   +1 more source

Microbacterium profundi sp. nov., isolated from deep-sea sediment of polymetallic nodule environments [PDF]

INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY, 2008
A Gram-positive, aerobic, neutrophilic and rod-shaped bacterium, strain Shh49(T), was isolated from a deep-sea sediment sample collected from the East Pacific polymetallic nodule region. The strain was able to grow within a temperature range of 4-35 degrees C and tolerated up to 7.5 % (w/v) NaCl.
Yue-Hong, Wu, Min, Wu, Chun-Sheng, Wang, Xiao-Gu, Wang, Jun-Yi, Yang, Aharon, Oren, Xue-Wei, Xu   +6 more
openaire   +2 more sources