Search Results - "GLUD, Ronnie N"

Two decades of chemical imaging of solutes in sediments and soils – a review by Santner, Jakob, Larsen, Morten, Kreuzeder, Andreas, Glud, Ronnie N.

“…[Display omitted] •We review the state-of-the-art of solute imaging in soils, sediments and wetlands.•Solute imaging techniques are described in detail.•Method…”
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Respiration by “marine snow” at high hydrostatic pressure: Insights from continuous oxygen measurements in a rotating pressure tank by Stief, Peter, Elvert, Marcus, Glud, Ronnie N.

“…It is generally anticipated that particulate organic carbon (POC) for most part is degraded by attached microorganisms during the descent of “marine snow”…”
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Organic matter degradation causes enrichment of organic pollutants in hadal sediments by Sobek, Anna, Abel, Sebastian, Sanei, Hamed, Bonaglia, Stefano, Li, Zhe, Horlitz, Gisela, Rudra, Arka, Oguri, Kazumasa, Glud, Ronnie N.

“…Burial of persistent organic pollutants (POPs) such as polychlorinated biphenyls (PCBs) in deep-sea sediments contributes to 60% of their historical emissions…”
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Anammox bacteria drive fixed nitrogen loss in hadal trench sediments by Thamdrup, Bo, Schauberger, Clemens, Larsen, Morten, Trouche, Blandine, Maignien, Lois, Arnaud-Haond, Sophie, Wenzhöfer, Frank, Glud, Ronnie N.

“…Benthic N₂ production by microbial denitrification and anammox is the largest sink for fixed nitrogen in the oceans. Most N₂ production occurs on the…”
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Benthic Carbon Mineralization in Hadal Trenches: Insights From In Situ Determination of Benthic Oxygen Consumption by Luo, Min, Glud, Ronnie N., Pan, Binbin, Wenzhöfer, Frank, Xu, Yunping, Lin, Gang, Chen, Duofu

“…Hadal trenches have been proposed as depocenters of organic material and hot spots for organic matter mineralization. In this study, we for the first time…”
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Uniform selective pressures within redox zones drive gradual changes in microbial community composition in hadal sediments by Schauberger, Clemens, Seki, David, Cutts, Elise M., Glud, Ronnie N., Thamdrup, Bo

“…Microbial communities in marine sediments are highly diverse, yet the processes that give rise to this complexity are unclear. It has been proposed that…”
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High rates of microbial carbon turnover in sediments in the deepest oceanic trench on Earth by Glud, Ronnie N., Wenzhöfer, Frank, Middelboe, Mathias, Oguri, Kazumasa, Turnewitsch, Robert, Canfield, Donald E., Kitazato, Hiroshi

“…Microbes regulate the decomposition of organic matter in marine sediments. Measurements at the deepest oceanic site on Earth reveal high rates of microbial…”
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Composition, buoyancy regulation and fate of ice algal aggregates in the Central Arctic Ocean by Fernández-Méndez, Mar, Wenzhöfer, Frank, Peeken, Ilka, Sørensen, Heidi L, Glud, Ronnie N, Boetius, Antje

“…Sea-ice diatoms are known to accumulate in large aggregates in and under sea ice and in melt ponds. There is recent evidence from the Arctic that such…”
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Aquatic Eddy Covariance: The Method and Its Contributions to Defining Oxygen and Carbon Fluxes in Marine Environments by Berg, Peter, Huettel, Markus, Glud, Ronnie N, Reimers, Clare E, Attard, Karl M

“…Aquatic eddy covariance (AEC) is increasingly being used to study benthic oxygen (O ) flux dynamics, organic carbon cycling, and ecosystem health in marine and…”
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Localized Flux Maxima of Arsenic, Lead, and Iron around Root Apices in Flooded Lowland Rice by Williams, Paul N, Santner, Jakob, Larsen, Morten, Lehto, Niklas J, Oburger, Eva, Wenzel, Walter, Glud, Ronnie N, Davison, William, Zhang, Hao

“…In wetland-adapted plants, such as rice, it is typically root apexes, sites of rapid entry for water/nutrients, where radial oxygen losses (ROLs) are highest…”
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Strong linkage between benthic oxygen uptake and bacterial tetraether lipids in deep-sea trench regions by Xiao, Wenjie, Xu, Yunping, Canfield, Donald E., Wenzhöfer, Frank, Zhang, Chuanlun, Glud, Ronnie N.

“…Oxygen in marine sediments regulates many key biogeochemical processes, playing a crucial role in shaping Earth’s climate and benthic ecosystems. In this…”
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Towards a sampling design for characterizing habitat-specific benthic biodiversity related to oxygen flux dynamics using Aquatic Eddy Covariance by Rodil, Iván F, Attard, Karl M, Norkko, Joanna, Glud, Ronnie N, Norkko, Alf

“…The Aquatic Eddy Covariance (AEC) technique has emerged as an important method to quantify in situ seafloor metabolism over large areas of heterogeneous…”
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Microbial community structure in hadal sediments: high similarity along trench axes and strong changes along redox gradients by Schauberger, Clemens, Glud, Ronnie N., Hausmann, Bela, Trouche, Blandine, Maignien, Lois, Poulain, Julie, Wincker, Patrick, Arnaud-Haond, Sophie, Wenzhöfer, Frank, Thamdrup, Bo

“…Hadal trench sediments are hotspots of biogeochemical activity in the deep sea, but the biogeochemical and ecological factors that shape benthic hadal…”
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High mercury accumulation in deep-ocean hadal sediments by Sanei, Hamed, Outridge, Peter M., Oguri, Kazumasa, Stern, Gary A., Thamdrup, Bo, Wenzhöfer, Frank, Wang, Feiyue, Glud, Ronnie N.

“…Ocean sediments are the largest sink for mercury (Hg) sequestration and hence an important part of the global Hg cycle 1 . Yet accepted global average Hg flux…”
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O2 dynamics in the rhizosphere of young rice plants (Oryza sativa L.) as studied by planar optodes by Larsen, Morten, Santner, Jakob, Oburger, Eva, Wenzel, Walter W., Glud, Ronnie N.

“…Background and aims Radial O 2 loss (ROL) strongly affect the O 2 availability in the rhizosphere of rice. The ROL create an oxic zone around the roots,…”
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Anaerobic Nitrogen Turnover by Sinking Diatom Aggregates at Varying Ambient Oxygen Levels by Stief, Peter, Kamp, Anja, Thamdrup, Bo, Glud, Ronnie N

“…In the world's oceans, even relatively low oxygen levels inhibit anaerobic nitrogen cycling by free-living microbes. Sinking organic aggregates, however, might…”
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Spatial variability of prokaryotic and viral abundances in the Kermadec and Atacama Trench regions by Schauberger, Clemens, Middelboe, Mathias, Larsen, Morten, Peoples, Logan M., Bartlett, Douglas H., Kirpekar, Finn, Rowden, Ashley A., Wenzhöfer, Frank, Thamdrup, Bo, Glud, Ronnie N.

“…Hadal trenches represent the deepest part of the ocean and are dynamic depocenters with intensified prokaryotic activity. Here, we explored the distribution…”
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Disentangling Effects of Sea Surface Temperature and Water Depth on Hydroxylated Isoprenoid GDGTs: Insights From the Hadal Zone and Global Sediments by Xiao, Wenjie, Xu, Yunping, Zhang, Chuanlun, Lin, Jian, Wu, Weichao, Lü, Xiaoxia, Tan, Jingqian, Zhang, Xi, Zheng, Fengfeng, Song, Xiuqing, Zhu, Yuanqing, Yang, Yi, Zhang, Hongrui, Wenzhöfer, Frank, Rowden, Ashley A., Glud, Ronnie N.

“…Hydroxylated isoprenoid glycerol dialkyl glycerol tetraethers (OH‐GDGTs) preserved in marine sediments are thought to be controlled by sea surface temperature…”
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A simple and inexpensive high resolution color ratiometric planar optode imaging approach: application to oxygen and pH sensing by Larsen, Morten, Borisov, Sergey M., Grunwald, Björn, Klimant, Ingo, Glud, Ronnie N.

“…A simple, high resolution colormetric planar optode imaging approach is presented. The approach is simple and inexpensive yet versatile, and can be used to…”
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Seasonal rates of benthic primary production in a Greenland fjord measured by aquatic eddy correlation by Attard, Karl M., Glud, Ronnie N., McGinnis, Daniel F., Rysgaard, Søren

“…We present the first year-round estimates of benthic primary production at four contrasting shallow (3–22 m depth) benthic habitats in a southwest Greenland…”
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