Bacterial abundant taxa exhibit stronger environmental adaption than rare taxa in the Arctic Ocean sediments [0.03%]
细菌优势类群比稀有类群在北极海洋沉积物中表现出更强的环境适应性
Jianxing Sun,Hongbo Zhou,Haina Cheng et al.
Jianxing Sun et al.
Marine bacteria influence Earth's environmental dynamics in fundamental ways by controlling the biogeochemistry and productivity of the oceans. However, little is known about the survival strategies of their abundant and rare taxa, especial...
Hexabromocyclododecanes in soils, plants, and sediments from Svalbard, Arctic: Levels, isomer profiles, chiral signatures, and potential sources [0.03%]
六溴环十二烷在斯瓦尔巴群岛的土壤、植物和沉积物中的分布：水平、异构体模式、手性标志以及潜在来源
Chenlu Lin,Honghua Li,Zhiguo Pei et al.
Chenlu Lin et al.
Elevated proportions of α-HBCD with an average of 41% in the terrestrial samples and 25% in ocean sediments compared to those in commercial products (10-13% for α-HBCD) were observed, implying isomerization from γ- to α-HBCD in the Arctic environment.
Daniel H Rothman
Daniel H Rothman
This aging effect leaves observable quantitative signatures: Organic matter decays at rates that are inversely proportional to its age, while microbial populations and concentrations of organic carbon in ocean sediments decrease at distinct powers of age.
Comparative single-cell genomics of Atribacterota JS1 in the Japan Trench hadal sedimentary biosphere [0.03%]
日本海沟超深渊沉积生物圈中Atribacterota门JS1的比较单细胞基因组学研究
Kana Jitsuno,Tatsuhiko Hoshino,Yohei Nishikawa et al.
Kana Jitsuno et al.
However, the potential metabolic functions of individual microorganisms and their biogeographical distributions in hadal ocean sediments remain largely unexplored.
Earthquake-enhanced dissolved carbon cycles in ultra-deep ocean sediments [0.03%]
超强地震对超深海洋沉积物溶解碳循环的增强作用
Mengfan Chu,Rui Bao,Michael Strasser et al.
Mengfan Chu et al.
Hadal trenches are unique geological and ecological systems located along subduction zones. Earthquake-triggered turbidites act as efficient transport pathways of organic carbon (OC), yet remineralization and transformation of OC in these s...
Arctic Ocean sediments as important current and future sinks for marine microplastics missing in the global microplastic budget [0.03%]
北极海洋沉积物作为目前和未来重要的海洋微塑料汇在_global_microplastic_预算中被忽视了
Seung-Kyu Kim,Ji-Su Kim,So-Young Kim et al.
Seung-Kyu Kim et al.
To better understand unexpectedly low plastic loads at the ocean's surface compared with inputs, unidentified sinks must be located. Here, we present the microplastic (MP) budget for multi-compartments in the western Arctic Ocean (WAO) and ...
A direct examination of microbial specialized metabolites associated with ocean sediments from Baffin Bay and the Gulf of Maine [0.03%]
巴芬湾和缅因湾海洋沉积物中微生物次生代谢产物的直接分析
Arshad Ali Shaikh,Joost T P Verhoeven,Rupesh K Sinha et al.
Arshad Ali Shaikh et al.
Specialized metabolites produced by microorganisms found in ocean sediments display a wide range of clinically relevant bioactivities, including antimicrobial, anticancer, antiviral, and anti-inflammatory....In this study, ocean sediments were collected from Baffin Bay (Canadian Arctic) and the Gulf of Maine for untargeted metabolomics using mass spectrometry. A direct examination of prepared organic extracts identified 1468 spectra, of which ∼45% could be annotated using in silico analysis methods.
Local structure and distortions of mixed methane-carbon dioxide hydrates [0.03%]
混合甲烷二氧化碳水合物的局域结构及畸变
Bernadette R Cladek,S Michelle Everett,Marshall T McDonnell et al.
Bernadette R Cladek et al.
A vast source of methane is found in gas hydrate deposits, which form naturally dispersed throughout ocean sediments and arctic permafrost. Methane may be obtained from hydrates by exchange with hydrocarbon byproduct carbon dioxide.
Source Identification of Organophosphate Esters through the Profiles in Proglacial and Ocean Sediments from Ny-Ålesund, the Arctic [0.03%]
通过Ny-Ålesund北极地区的冰川前和海洋沉积物中的分布特征识别磷酸酯的来源
Jie Fu,Kehan Fu,Boyuan Hu et al.
Jie Fu et al.
The present study unprecedentedly investigated both 16 tri-OPEs and 8 di-OPEs in proglacial and ocean sediments from Ny-Ålesund, the Arctic....Mean concentrations of tri-OPEs and di-OPEs in proglacial sediments were 487 and 341 pg/g dry weight (dw), respectively, which were significantly lower than those in ocean sediments (1692 and 525 pg/g dw)....Such source difference was evidenced by the contamination profile of OPEs: chlorinated tri-OPEs with high environmental persistence and high LRAT were dominant in proglacial sediments (66%); however, weakly environmentally persistent and highly hydrophobic aryl tri-OPEs were dominant in ocean sediments...Di-OPEs in proglacial and ocean sediments were dominated by groups of parent tri-OPEs with strong photodegradability, such as alkyl (75%) and aryl (58%).
Benthic Dissolved Silicon and Iron Cycling at Glaciated Patagonian Fjord Heads [0.03%]
冰川巴塔哥尼亚峡湾头溶解硅和铁的底质循环
Hong Chin Ng,Jon R Hawkings,Sebastien Bertrand et al.
Hong Chin Ng et al.
A high diffusive flux of dissolved Fe from the fjord sediments (up to 0.02 mmol m-2 day-1) compared to open ocean sediments (typically 0.1 mmol m-2 day-1).
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