Results 131 to 140 of about 525 (166)

Hadal trenches: the ecology of the deepest places on Earth

Trends in Ecology & Evolution, 2010
Hadal trenches account for the deepest 45% of the oceanic depth range and host active and diverse biological communities. Advances in our understanding of hadal community structure and function have, until recently, relied on technologies that were unable to document ecological information. Renewed international interest in exploring the deepest marine
Jamieson, Alan J., Fujii, Toyonobu, Mayor, Daniel J., Solan, Martin, Priede, Imants G.   +4 more
openaire   +3 more sources

Living Deep: A Synopsis of Hadal Trench Ecology

Marine Technology Society Journal, 2009
AbstractThe ocean’s deepest environments are fraught with extreme conditions, including the highest hydrostatic pressures found on earth. The hadal zone, which encompasses oceanic depths from 6,000 to almost 11,000 m, is located almost exclusively within deep-sea trenches.
Lesley E. Blankenship-Williams, Lisa A. Levin   +1 more
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Systematic identification of microplastics in abyssal and hadal sediments of the Kuril Kamchatka trench [PDF]

Environmental Pollution, 2021
The occurrence of microplastics throughout marine environments worldwide, from pelagic to benthic habitats, has become serious cause for concern. Hadal zones were recently described as the "trash bins of the oceans" and ultimate sink for marine plastic debris. The Kuril region covers a substantial area of the North Pacific Ocean and is characterised by
Serena Martina Abel, Sebastian Primpke, Angelika Brandt   +2 more
exaly   +3 more sources

Biogeochemistry of hadal trenches: Recent developments and future perspectives

Deep Sea Research Part II: Topical Studies in Oceanography, 2018
Abstract Hadal trenches with water depth ranging from 6000 to 11,000 m are the deepest biogeochemical province in the world's oceans. Due to technological challenges of sampling and observation at such extreme depths, these trenches are one of the least exploited habitats on our planet.
Yunping Xu, Huangmin Ge, Jiasong Fang
openaire   +1 more source

Earthquake-induced redistribution and reburial of microbes in the hadal trenches

The Innovation Geoscience, 2023
<p>The hadal trenches located on the subduction zone harbor unique deep-sea microbes, yet the mechanisms regulating the characteristics of the deep-sea microbial communities remain largely unknown. The frequent and unpredictable tectonic processes such as earthquakes triggered by plate subduction act as a lateral transport pathway for sediments ...
Mengfan Chu, Jiwen Liu, Haoshuai Li, Yang Zhou, Nan Wang, Cuimei Xia, Achim Kopf, Michael Strasser, Rui Bao   +8 more
openaire   +1 more source

Geochemical characteristics of hadal sediment in the northern Yap Trench

Journal of Oceanology and Limnology, 2019
Two sediment cores were retrieved in the hadal zone of the Yap Trench, and their concentrations of six major elements Mg, Al, Ca, Ti, Mn and Fe and nine trace elements Sr, Ba, Pb, V, Cr, Co, Ni, Cu and Zn were determined in inductively coupled plasma atomic emission spectrometry (ICP-AES).
Yuhuan Huang, Chengjun Sun, Guipeng Yang, Xin’an Yue, Fenghua Jiang, Wei Cao, Xiaofei Yin, Chaonan Guo, Jiaohong Niu, Haibing Ding   +9 more
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Distribution characteristics of lipids in hadal sediment in the Yap Trench

Journal of Oceanology and Limnology, 2020
In this study, cored sediment samples collected by the Jiaolong Submersible at 6 779 m depth from the hadal zone of the Yap Trench in May 2016 were sliced in 1-cm interval from top to bottom, and lipids in each sediment layer were quantitatively and qualitatively analyzed.
Yixin Yan, Chengjun Sun, Yuhuan Huang, Wei Cao, Fenghua Jiang, Guipeng Yang, Haibing Ding   +6 more
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A preliminary design of a movable laboratory for hadal trenches

Methods in Oceanography, 2014
Abstract The hadal trenches and the biology and ecology of the organisms that inhabit them remain one of the least understood marine environments. The study of hadal trenches which is often referred to as hadal science, needs special technical equipment support such as landers, unmanned submersibles and manned submersibles.
Weicheng Cui, Yong Hu, Wei Guo, Binbin Pan, Fang Wang   +4 more
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Hidden dangers: High levels of organic pollutants in hadal trenches

Water Research
The "V"-shaped structure of hadal trenches acts as a natural collector of organic pollutants, drawing attention to the need for extensive research in these areas. Our review identifies significant concentrations of organic pollutants, including persistent organic pollutants, black carbon, antibiotic-resistant genes, and plastics, which often match ...
Jingqian, Xie, Chuchu, Chen, Min, Luo, Xiaotong, Peng, Tian, Lin, Duofu, Chen   +5 more
openaire   +2 more sources

Occurrence of Halogenated Organic Pollutants in Hadal Trenches of the Western Pacific Ocean

Environmental Science & Technology, 2020
The hadal trenches are the most remote and inaccessible habitats on earth and were once believed to be pristine. A recent study has reported the detection of high levels of persistent organic pollutants (POPs), including polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs), in endemic amphipods from two hadal trenches (Mariana ...
Juntao Cui, Zhiqiang Yu, Mei Mi, Lisheng He, Zhongli Sha, Peng Yao, Jiasong Fang, Weidong Sun   +7 more
openaire   +2 more sources