Results 41 to 50 of about 398 (170)

The Benthic Megafaunal Assemblages of the CCZ (Eastern Pacific) and an Approach to their Management in the Face of Threatened Anthropogenic Impacts

Frontiers in Marine Science, 2018
We present here the results of a UNESCO/IOC baseline study of the megafaunal assemblages of the polymetallic nodule ecosystem of 5 areas within the Clarion Clipperton Zone (CCZ) of the eastern Pacific Ocean.
Virginie Tilot, Virginie Tilot, Rupert Ormond, Rupert Ormond, Juan Moreno Navas, Teresa S. Catalá, Teresa S. Catalá, Teresa S. Catalá   +7 more
doaj   +1 more source

Potential Short-Term Effects of Mine Tailings on Phytoplankton Assemblages in the Open Ocean

Journal of Marine Science and Engineering, 2022
The disposal of mine tailings into the marine environment is considered an essential option to secure the economic efficiency of deep-sea mining, but it might adversely affects the ecosystem.
Dong Han Choi, Jangyeon Yoo, Wonseok Yang, Jae Hoon Noh, Yeonjung Lee, Kongtae Ra, Kiseong Hyeong, Chan Min Yoo, Jisoo Park   +8 more
doaj   +1 more source

Cautionary Tales for Science‐Based Policy in Deep‐Sea Mining Governance

Global Policy, Volume 17, Issue 4, Page 764-772, September 2026.
ABSTRACT This article examines how low‐certainty scientific claims permeate high‐stakes policy debates before rigorous validation. Using deep‐sea mining governance as a focal domain, the study traces high‐visibility narratives, including the “dark oxygen” hypothesis, radioactive risks of polymetallic nodules, projected impacts of sediment plume ...
Lucía Villar‐Muñoz
wiley   +1 more source

Assessing benthic community structure and diversity in the Western Pacific polymetallic nodule area: insights from multi-primer eDNA metabarcoding

Frontiers in Marine Science
IntroductionDeep-sea polymetallic nodules are considered a critical resource for meeting future global metal demands. However, current knowledge of benthic community composition and biodiversity patterns in these regions remains limited, impeding ...
Ziyu Zhao, Ziyu Zhao, Ziyu Li, Ziyu Li, Xuebao He, Juan Yang, Juan Yang, Jianxin Xia, Jianxin Xia   +8 more
doaj   +1 more source

Sediment Erosion Generated by a Coandă-Effect-Based Polymetallic-Nodule Collector

Journal of Marine Science and Engineering, 2023
To date, hydraulic collection is the most widely considered technology in polymetallic-nodule mining, since there is no direct contact between hydraulic collectors and ocean floor.
Said Alhaddad, Rudy Helmons
doaj   +1 more source

Hydrothermal Manganese‐Oxide Mineralization of a Carbonate Ooze, Samoan Hotspot Region, South Pacific Ocean

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract Low‐temperature hydrothermal manganese oxides occur throughout the global oceans. However, the hydrothermal replacement of a carbonate ooze by manganese oxides is described here for the first time. The 24 samples dredged from three locations around the Territory of American Samoa in the South Pacific Ocean include six samples with remnant ...
James R. Hein, Amy Gartman, Kira Mizell, Mark Baskaran, Anthony Koppers, Hubert Staudigel   +5 more
wiley   +1 more source

Research Status of Deep-Sea Polymetallic Nodule Collection Technology

Journal of Marine Science and Engineering
The bottom of the ocean is rich in mineral resources, and deep-sea mining has been a research hotspot in recent years. As a key part of deep-sea mining operation, polymetallic nodule collection technology has been researched in many countries around the ...
Boying Liu, Xiaoxiang Wang, Xiuzhan Zhang, Jiancheng Liu, Liangwan Rong, Yong Ma   +5 more
doaj   +1 more source

Mars Alteration on Earth: A Spectroscopic Study of Hydrated Silica and Biomarker Preservation in La Palma Lava Tubes

Journal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract Volcanic tubes provide stable environments where unique mineralogical assemblages can form and be preserved, making them valuable terrestrial analogs for Martian studies. This work investigates tree‐like structures within two lava tubes on La Palma Island (Canary Islands, Spain) through a comprehensive geochemical and mineralogical ...
F. Alberquilla, J. Aramendia, I. Martínez‐Arkarazo, G. Gorla, L. Coloma, G. Arana, A. Gonzalez, R. Gisbert, P. Cobiella, M. Perestelo, J. M. Madariaga   +10 more
wiley   +1 more source

Threatened by mining, polymetallic nodules are required to preserve abyssal epifauna [PDF]

Scientific Reports, 2016
AbstractPolymetallic nodule mining at abyssal depths in the Clarion Clipperton Fracture Zone (Eastern Central Pacific) will impact one of the most remote and least known environments on Earth. Since vast areas are being targeted by concession holders for future mining, large-scale effects of these activities are expected.
Vanreusel, Ann, Hilario, Ana, Ribeiro, Pedro A., Menot, Lenaick, Arbizu, Pedro Martinez   +4 more
openaire   +8 more sources

Along the Benthic to Holoplanktonic Continuum: Seafloor Affinity Increases Distance‐Decay Rates Among Abyssal Communities

Global Ecology and Biogeography, Volume 35, Issue 8, August 2026.
ABSTRACT Aim Marine species ranges are often large, contributing to relatively high community similarity over space, with decreased ranges expected among taxa that have lower dispersal and/or higher substrate requirements. We tested for a weakening of biogeographic structuring among dispersing abyssal taxa along the benthic to holoplanktonic habitat ...
Gabrielle N. Ellis, Oliver Kersten, Eric Vetter, Craig R. Smith, Jeffrey C. Drazen, Erica Goetze   +5 more
wiley   +1 more source