Search Results - "LAVIK, G"

N2 production rates limited by nitrite availability in the Bay of Bengal oxygen minimum zone by Bristow, L. A., Callbeck, C. M., Larsen, M., Altabet, M. A., Dekaezemacker, J., Forth, M., Gauns, M., Glud, R. N., Kuypers, M. M. M., Lavik, G., Milucka, J., Naqvi, S. W. A., Pratihary, A., Revsbech, N. P., Thamdrup, B., Treusch, A. H., Canfield, D. E.

“…A third or more of the fixed nitrogen lost from the oceans as N 2 is removed by anaerobic microbial processes in open ocean oxygen minimum zones. These zones…”
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Anammox, denitrification and dissimilatory nitrate reduction to ammonium in the East China Sea sediment by Song, G. D, Liu, S. M, Marchant, H, Kuypers, M. M. M, Lavik, G

“…Benthic nitrogen transformation pathways were investigated in the sediment of the East China Sea (ECS) in June of 2010 using the 15N isotope pairing technique…”
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Application of the isotope pairing technique in sediments where anammox, denitrification, and dissimilatory nitrate reduction to ammonium coexist by Song, G. D., Liu, S. M., Kuypers, M. M. M., Lavik, G.

“…The 15N isotope pairing technique is widely used to quantify anammox, denitrification, and dissimilatory nitrate reduction to ammonium (DNRA) in sediments…”
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Simultaneous sulfate and nitrate reduction in coastal sediments by Bourceau, O M, Ferdelman, T, Lavik, G, Mussmann, M, Kuypers, M M M, Marchant, H K

“…The oscillating redox conditions that characterize coastal sandy sediments foster microbial communities capable of respiring oxygen and nitrate simultaneously,…”
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Origin and fate of the secondary nitrite maximum in the Arabian Sea by Lam, P., Jensen, M. M., Kock, A., Lettmann, K. A., Plancherel, Y., Lavik, G., Bange, H. W., Kuypers, M. M. M.

“…The Arabian Sea harbours one of the three major oxygen minimum zones (OMZs) in the world's oceans, and it alone is estimated to account for ~10–20 % of global…”
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Temperature response of denitrification and anammox reveals the adaptation of microbial communities to in situ temperatures in permeable marine sediments that span 50° in latitude by Canion, A, Kostka, J. E, Gihring, T. M, Huettel, M, van Beusekom, J. E. E, Gao, H, Lavik, G, Kuypers, M. M. M

“…Despite decades of research on the physiology and biochemistry of nitrate/nitrite-respiring microorganisms, little is known regarding their metabolic response…”
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An eddy-stimulated hotspot for fixed nitrogen-loss from the Peru oxygen minimum zone by Altabet, M. A, Ryabenko, E, Stramma, L, Wallace, D. W. R, Frank, M, Grasse, P, Lavik, G

“…Fixed nitrogen (N) loss to biogenic N2 in intense oceanic O2 minimum zones (OMZ) accounts for a large fraction of the global N sink and is an essential control…”
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Light and freshwater discharge drive the biogeochemistry and microbial ecology in a sub-Arctic fjord over the Polar night by Vonnahme, T. R., Klausen, L., Bank, R. M., Michellod, D., Lavik, G., Dietrich, U., Gradinger, R.

“…The polar night has recently received increased attention as a surprisingly active biological season. Yet, polar night microbial ecology is a vastly…”
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Coupled physical/biogeochemical modeling including O2-dependent processes in the Eastern Boundary Upwelling Systems: application in the Benguela by Gutknecht, E, Dadou, I, Vu, B Le, Cambon, G, Sudre, J, Garçon, V, Machu, E, Rixen, T, Kock, A, Flohr, A, Paulmier, A, Lavik, G

“…The Eastern Boundary Upwelling Systems (EBUS) contribute to one fifth of the global catches in the ocean. Often associated with Oxygen Minimum Zones (OMZs),…”
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Shift from Denitrification to Anammox after Inflow Events in the Central Baltic Sea by Hannig, M, Lavik, G, Kuypers, MMM, Woebken, D, Martens-Habbena, W, Juergens, K

“…Incubation experiments with $^{15}N-labeled$ compounds (NO3- and NH4+) were performed during three cruises (2002, 2004, and 2005) to study the loss of…”
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Substrate and electron donor limitation induce phenotypic heterogeneity in different metabolic activities in a green sulphur bacterium by Zimmermann, M., Escrig, S., Lavik, G., Kuypers, M. M. M., Meibom, A., Ackermann, M., Schreiber, F.

“…Summary Populations of genetically identical cells can display marked variation in phenotypic traits; such variation is termed phenotypic heterogeneity. Here,…”
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Activity and abundance of denitrifying bacteria in the subsurface biosphere of diffuse hydrothermal vents of the Juan de Fuca Ridge by Bourbonnais, A, Juniper, S. K, Butterfield, D. A, Devol, A. H, Kuypers, M. M. M, Lavik, G, Hallam, S. J, Wenk, C. B, Chang, B. X, Murdock, S. A, Lehmann, M. F

“…Little is known about fixed nitrogen (N) transformation and elimination at diffuse hydrothermal vents where anoxic fluids are mixed with oxygenated crustal…”
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Nitrogen transfers off Walvis Bay: a 3-D coupled physical/biogeochemical modeling approach in the Namibian upwelling system by Gutknecht, E, Dadou, I, Marchesiello, P, Cambon, G, Le Vu, B, Sudre, J, Garçon, V, Machu, E, Rixen, T, Kock, A, Flohr, A, Paulmier, A, Lavik, G

“…Eastern boundary upwelling systems (EBUS) are regions of high primary production often associated with oxygen minimum zones (OMZs). They represent key regions…”
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Response of the benthic foraminiferal community to a simulated short-term phytodetritus pulse in the abyssal North Pacific by Enge, Annekatrin J., Nomaki, Hidetaka, Ogawa, Nanako O., Witte, Ursula, Moeseneder, Markus M., Lavik, Gaute, Ohkouchi, Naohiko, Kitazato, Hiroshi, Kučera, Michal, Heinz, Petra

“…Foraminifera are an important faunal element of the abyssal ecosystem and largely depend on deposited particulate organic matter from the photic zone to…”
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Viral infection of Phaeocystis globosa impedes release of chitinous star-like structures: quantification using single cell approaches by Sheik, A. R., Brussaard, C. P. D., Lavik, G., Foster, R. A., Musat, N., Adam, B., Kuypers, M. M. M.

“…Summary Phaeocystis globosa is an ecologically important bloom‐forming phytoplankton, which sequesters substantial amounts of inorganic carbon and can form…”
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Identification of coccolithophore blooms in the SE Atlantic Ocean off Namibia by satellites and in-situ methods by Siegel, H., Ohde, T., Gerth, M., Lavik, G., Leipe, T.

“…Sporadic occurrences of milky turquoise waters visible in true colour satellite imagery in the Benguela upwelling system off Namibia are characterized by high…”
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Corrigendum to "Temperature response of denitrification and anammox reveals the adaptation of microbial communities to in situ temperatures in permeable marine sediments that span 50° in latitude" published in Biogeosciences, 11, 309–320, 2014 by Canion, A, Kostka, J. E, Gihring, T. M, Huettel, M, van Beusekom, J. E. E, Gao, H, Lavik, G, Kuypers, M. M. M

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Anaerobic ammonium oxidation by marine and freshwater planctomycete-like bacteria by JETTEN, M. S. M, SLIEKERS, O, OP DEN CAMP, H. J. M, HULTH, S, NIELSEN, L. P, ABMA, W, THIRD, K, ENGSTRÖM, P, KUENEN, J. G, JØRGENSEN, B. B, CANFIELD, D. E, SINNINGHE DAMSTE, J. S, KUYPERS, M, REVSBECH, N. P, FUERST, J, WEISSENBACH, J, WAGNER, M, SCHMIDT, I, SCHMID, M, STROUS, M, DALSGAARD, T, VAN NIFTRIK, L, CIRPUS, I, VAN DE PAS-SCHOONEN, K, LAVIK, G, THAMDRUP, B, LE PASLIER, D

“…Recently, two fresh water species, " Candidatus Brocadia anammoxidans" and " Candidatus Kuenenia stuttgartiensis", and one marine species, " Candidatus…”
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Seasonal productivity dynamics in the pelagic central Benguela System inferred from the flux of carbonate and silicate organisms by Romero, O, Boeckel, B, Donner, B, Lavik, G, Fischer, G, Wefer, G

“…Flux of bulk components, carbonate- and silicate-bearing skeleton organisms, and the δ 15N-isotopic signal were investigated on a 1-year time-series sediment…”
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Nitrogen cycling driven by organic matter export in the South Pacific oxygen minimum zone by Kalvelage, Tim, Lavik, Gaute, Lam, Phyllis, Contreras, Sergio, Arteaga, Lionel, Löscher, Carolin R., Oschlies, Andreas, Paulmier, Aurélien, Stramma, Lothar, Kuypers, Marcel M. M.

“…Oxygen minimum zones are expanding globally, and at present account for around 20–40% of oceanic nitrogen loss. Heterotrophic denitrification and…”
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