Search Results - "Ras, J."

Spatial variability of phytoplankton pigment distributions in the Subtropical South Pacific Ocean: comparison between in situ and predicted data by Ras, J., Claustre, H., Uitz, J.

“…In the frame of the BIOSOPE cruise in 2004, the spatial distribution and structure of phytoplankton pigments was investigated along a transect crossing the…”
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Pigments, elemental composition (C, N, P, and Si), and stoichiometry of particulate matter in the naturally iron fertilized region of Kerguelen in the Southern Ocean by Lasbleiz, M, Leblanc, K, Blain, S, Ras, J, Cornet-Barthaux, V, Hélias Nunige, S, Quéguiner, B

“…The particulate matter distribution and phytoplankton community structure of the iron-fertilized Kerguelen region were investigated in early austral spring…”
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Characterization of fluoroquinolone and cephalosporin resistance mechanisms in Enterobacteriaceae isolated in a Dutch teaching hospital reveals the presence of an Escherichia coli ST131 clone with a specific mutation in parE by Paltansing, S, Kraakman, M E M, Ras, J M C, Wessels, E, Bernards, A T

“…To characterize the mechanisms of fluoroquinolone and cephalosporin resistance in Enterobacteriaceae from a Dutch teaching hospital in 2008. We sequenced gyrA,…”
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From the shape of the vertical profile of in vivo fluorescence to Chlorophyll-a concentration by Mignot, A., Claustre, H., D'Ortenzio, F., Xing, X., Poteau, A., Ras, J.

“…In vivo fluorescence of Chlorophyll-a (Chl-a) is a potentially useful property to study the vertical distribution of phytoplankton biomass. However the…”
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Deep silicon maxima in the stratified oligotrophic Mediterranean Sea by Crombet, Y., Leblanc, K., Quéguiner, B., Moutin, T., Rimmelin, P., Ras, J., Claustre, H., Leblond, N., Oriol, L., Pujo-Pay, M.

“…The silicon biogeochemical cycle has been studied in the Mediterranean Sea during late summer/early autumn 1999 and summer 2008. The distribution of nutrients,…”
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Characterization of the bio-optical anomaly and diurnal variability of particulate matter, as seen from scattering and backscattering coefficients, in ultra-oligotrophic eddies of the Mediterranean Sea by Loisel, H., Vantrepotte, V., Norkvist, K., Mériaux, X., Kheireddine, M., Ras, J., Pujo-Pay, M., Combet, Y., Leblanc, K., Dall'Olmo, G., Mauriac, R., Dessailly, D., Moutin, T.

“…The variability of inherent optical properties is investigated in the ultra-oligotrophic waters of the Mediterranean Sea sampled during the BOUM experiment…”
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The "neutral" community structure of planktonic herbivores, tintinnid ciliates of the microzooplankton, across the SE Tropical Pacific Ocean by Dolan, J. R., Ritchie, M. E., Ras, J.

“…We assessed the community characteristics of a group of planktonic herbivores across a species-rich area, the SE Pacific Ocean. A series of 22 stations between…”
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Characterization of Bio‐Optical Anomalies in the Kerguelen Region, Southern Indian Ocean: A Study Based on Shipborne Sampling and BioGeoChemical‐Argo Profiling Floats by Uitz, J., Roesler, C., Organelli, E., Claustre, H., Penkerc'h, C., Drapeau, S., Leymarie, E., Poteau, A., Schmechtig, C., Dimier, C., Ras, J., Xing, X., Blain, S.

“…The Southern Ocean (SO) is known for its atypical bio‐optical regime. This complicates the interpretation of proxies measured from satellite and in situ…”
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A geometric characterisation of the quadratic min-power centre by Brazil, M., Ras, C.J., Thomas, D.A.

“…•Complete geometric description of the min-power centre of a finite set of nodes under quadratic cost.•Various results relating the min-power centre to the…”
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Is the distribution of Prochlorococcus and Synechococcus ecotypes in the Mediterranean Sea affected by global warming? by Mella-Flores, D., Mazard, S., Humily, F., Partensky, F., Mahé, F., Bariat, L., Courties, C., Marie, D., Ras, J., Mauriac, R., Jeanthon, C., Mahdi Bendif, E., Ostrowski, M., Scanlan, D. J., Garczarek, L.

“…Biological communities populating the Mediterranean Sea, which is situated at the northern boundary of the subtropics, are often claimed to be particularly…”
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Biochemical characteristics and bacterial community structure of the sea surface microlayer in the South Pacific Ocean by Obernosterer, I., Catala, P., Lami, R., Caparros, J., Ras, J., Bricaud, A., Dupuy, C., van Wambeke, F., Lebaron, P.

“…The chemical and biological characteristics of the surface microlayer were determined during a transect across the South Pacific Ocean in October-December…”
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Retrieving the vertical distribution of chlorophyll a concentration and phytoplankton community composition from in situ fluorescence profiles: A method based on a neural network with potential for global-scale applications by Sauzède, R., Claustre, H., Jamet, C., Uitz, J., Ras, J., Mignot, A., D'Ortenzio, F.

“…A neural network‐based method is developed to assess the vertical distribution of (1) chlorophyll a concentration ([Chl]) and (2) phytoplankton community size…”
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Validation of MERIS reflectance and chlorophyll during the BENCAL cruise October 2002: preliminary validation of new demonstration products for phytoplankton functional types and photosynthetic parameters by Aiken, J., Fishwick, J. R., Lavender, S., Barlow, R., Moore, G. F., Sessions, H., Bernard, S., Ras, J., Hardman-Mountford, N. J.

“…We measured water leaving reflectance, phytoplankton pigments, optical properties and photosynthetic parameters in the southern Benguela ecosystem in October…”
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Sustainable production and the performance of South African entrepreneurs in a global supply chain. The case of South African table grape producers by Ras, Peter J., Vermeulen, Walter J. V.

“…Global trade is strongly growing and becoming connected to the issue of sustainable development in business practices. In recent years this has resulted in…”
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Ecology of aerobic anoxygenic phototrophic bacteria along an oligotrophic gradient in the Mediterranean Sea by Lamy, D., Jeanthon, C., Cottrell, M. T., Kirchman, D. L., Van Wambeke, F., Ras, J., Dahan, O., Pujo-Pay, M., Oriol, L., Bariat, L., Catala, P., Cornet-Barthaux, V., Lebaron, P.

“…Aerobic anoxygenic phototrophic (AAP) bacteria are photoheterotrophic prokaryotes able to use both light and organic substrates for energy production. They are…”
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The challenge of greening global product chains: meeting both ends by Vermeulen, Walter J. V., Ras, P. J.

“…Greening of product chains has come up as an important means to systematically improve the environmental performance of products from cradle to cradle in…”
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Fixed parameter tractability of a biconnected bottleneck Steiner network problem by Ras, Charl J.

“…For a given set X of points in the plane, we consider the problem of constructing a 2‐vertex‐connected network spanning X and at most k additional Steiner…”
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The MAREDAT global database of high performance liquid chromatography marine pigment measurements by Peloquin, J, Swan, C, Gruber, N, Vogt, M, Claustre, H, Ras, J, Uitz, J, Barlow, R, Behrenfeld, M, Bidigare, R

“…A global pigment database consisting of 35 634 pigment suites measured by high performance liquid chromatography was assembled in support of the MARine…”
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A seasonal study of diatom dynamics in the North Atlantic during the POMME experiment (2001): Evidence for Si limitation of the spring bloom by Leblanc, K., Leynaert, A., Fernandez I., C., Rimmelin, P., Moutin, T., Raimbault, P., Ras, J., Quéguiner, B.

“…The Si cycle in the northeast Atlantic (40°–43.5°N, 15°–21°W) was investigated in the winter, spring, and late summer during the Programme Océan…”
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The Gilbert arborescence problem by Volz, M. G., Brazil, M., Ras, C. J., Swanepoel, K. J., Thomas, D. A.

“…We investigate the problem of designing a minimum‐cost flow network interconnecting n sources and a single sink, each with known locations in a normed space…”
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