Search Results - "Alves, Ricardo"

Unifying the global phylogeny and environmental distribution of ammonia-oxidising archaea based on amoA genes by Alves, Ricardo J. Eloy, Minh, Bui Quang, Urich, Tim, von Haeseler, Arndt, Schleper, Christa

“…Ammonia-oxidising archaea (AOA) are ubiquitous and abundant in nature and play a major role in nitrogen cycling. AOA have been studied intensively based on the…”
Get full text

Input of easily available organic C and N stimulates microbial decomposition of soil organic matter in arctic permafrost soil by Wild, Birgit, Schnecker, Jörg, Alves, Ricardo J. Eloy, Barsukov, Pavel, Bárta, Jiří, Čapek, Petr, Gentsch, Norman, Gittel, Antje, Guggenberger, Georg, Lashchinskiy, Nikolay, Mikutta, Robert, Rusalimova, Olga, Šantrůčková, Hana, Shibistova, Olga, Urich, Tim, Watzka, Margarete, Zrazhevskaya, Galina, Richter, Andreas

“…Rising temperatures in the Arctic can affect soil organic matter (SOM) decomposition directly and indirectly, by increasing plant primary production and thus…”
Get full text

Existence of solution for a generalized Schrödinger–Poisson system via bifurcation theory by Alves, Ricardo

“…In this paper, we study a generalized Schrödinger–Poisson system in a bounded domain of R 3 and involving an asymptotically linear nonlinearity. We prove the…”
Get full text

Effects of soil organic matter properties and microbial community composition on enzyme activities in cryoturbated arctic soils by Schnecker, Jörg, Wild, Birgit, Hofhansl, Florian, Eloy Alves, Ricardo J, Bárta, Jiří, Capek, Petr, Fuchslueger, Lucia, Gentsch, Norman, Gittel, Antje, Guggenberger, Georg, Hofer, Angelika, Kienzl, Sandra, Knoltsch, Anna, Lashchinskiy, Nikolay, Mikutta, Robert, Santrůčková, Hana, Shibistova, Olga, Takriti, Mounir, Urich, Tim, Weltin, Georg, Richter, Andreas

“…Enzyme-mediated decomposition of soil organic matter (SOM) is controlled, amongst other factors, by organic matter properties and by the microbial decomposer…”
Get full text

Existence, nonexistence and multiplicity of positive solutions for singular quasilinear problems by Alves, Ricardo

“…In the present paper we deal with a quasilinear problem involving a singular term and a parametric superlinear perturbation. We are interested in the…”
Get full text

Nitrososphaera viennensis gen. nov., sp. nov., an aerobic and mesophilic, ammonia-oxidizing archaeon from soil and a member of the archaeal phylum Thaumarchaeota by Stieglmeier, Michaela, Klingl, Andreas, Alves, Ricardo J E, Rittmann, Simon K-M R, Melcher, Michael, Leisch, Nikolaus, Schleper, Christa

“…A mesophilic, neutrophilic and aerobic, ammonia-oxidizing archaeon, strain EN76(T), was isolated from garden soil in Vienna (Austria). Cells were irregular…”
Get full text

Nitrification rates in Arctic soils are associated with functionally distinct populations of ammonia-oxidizing archaea by Alves, Ricardo J Eloy, Wanek, Wolfgang, Zappe, Anna, Richter, Andreas, Svenning, Mette M, Schleper, Christa, Urich, Tim

“…The functioning of Arctic soil ecosystems is crucially important for global climate, and basic knowledge regarding their biogeochemical processes is lacking…”
Get full text

Microbial nitrogen dynamics in organic and mineral soil horizons along a latitudinal transect in western Siberia by Wild, Birgit, Schnecker, Jörg, Knoltsch, Anna, Takriti, Mounir, Mooshammer, Maria, Gentsch, Norman, Mikutta, Robert, Alves, Ricardo J. Eloy, Gittel, Antje, Lashchinskiy, Nikolay, Richter, Andreas

“…Soil N availability is constrained by the breakdown of N‐containing polymers such as proteins to oligopeptides and amino acids that can be taken up by plants…”
Get full text

Ammonia Oxidation by the Arctic Terrestrial Thaumarchaeote Candidatus Nitrosocosmicus arcticus Is Stimulated by Increasing Temperatures by Alves, Ricardo J Eloy, Kerou, Melina, Zappe, Anna, Bittner, Romana, Abby, Sophie S, Schmidt, Heiko A, Pfeifer, Kevin, Schleper, Christa

“…Climate change is causing arctic regions to warm disproportionally faster than those at lower latitudes, leading to alterations in carbon and nitrogen cycling,…”
Get full text

Physiological and genomic characterization of two novel marine thaumarchaeal strains indicates niche differentiation by Bayer, Barbara, Vojvoda, Jana, Offre, Pierre, Alves, Ricardo J E, Elisabeth, Nathalie H, Garcia, Juan AL, Volland, Jean-Marie, Srivastava, Abhishek, Schleper, Christa, Herndl, Gerhard J

“…Ammonia-oxidizing Archaea (AOA) are ubiquitous throughout the oceanic water column; however, our knowledge on their physiological and ecological diversity in…”
Get full text

Microbial community composition shapes enzyme patterns in topsoil and subsoil horizons along a latitudinal transect in Western Siberia by Schnecker, Jörg, Wild, Birgit, Takriti, Mounir, Eloy Alves, Ricardo J., Gentsch, Norman, Gittel, Antje, Hofer, Angelika, Klaus, Karoline, Knoltsch, Anna, Lashchinskiy, Nikolay, Mikutta, Robert, Richter, Andreas

“…Soil horizons below 30 cm depth contain about 60% of the organic carbon stored in soils. Although insight into the physical and chemical stabilization of soil…”
Get full text

Effect of ultraviolet radiation (UVR) on the life stages of fish by Alves, Ricardo N., Agustí, Susana

“…Current levels of Ultraviolet Radiation (UVR) represent a significant threat to many fish species. The first studies on the effects of UVR on organisms were…”
Get full text

Bioactive compounds and antioxidant capacities of 18 non-traditional tropical fruits from Brazil by Rufino, Maria do Socorro M., Alves, Ricardo E., de Brito, Edy S., Pérez-Jiménez, Jara, Saura-Calixto, Fulgencio, Mancini-Filho, Jorge

“…The bioactive compounds and antioxidant capacities of polyphenolic extracts of 18 fresh and dry native non-traditional fruits from Brazil were determined using…”
Get full text

Existence of Positive Solution for a Singular Elliptic Problem with an Asymptotically Linear Nonlinearity by Lima Alves, Ricardo

“…In this paper, we consider the existence of positive solutions for a singular elliptic problem involving an asymptotically linear nonlinearity and depending on…”
Get full text

Drying and Rainfall Shape the Structure and Functioning of Nitrifying Microbial Communities in Riverbed Sediments by Arce, Maria Isabel, von Schiller, Daniel, Bengtsson, Mia M, Hinze, Christian, Jung, Hoseung, Alves, Ricardo J Eloy, Urich, Tim, Singer, Gabriel

“…Non-flow periods in fluvial ecosystems are a global phenomenon. Streambed drying and rewetting by sporadic rainfalls could drive considerable changes in the…”
Get full text

Archaeal nitrification is a key driver of high nitrous oxide emissions from arctic peatlands by Siljanen, Henri M.P., Alves, Ricardo J.E., Ronkainen, Jussi G., Lamprecht, Richard E., Bhattarai, Hem R., Bagnoud, Alexandre, Marushchak, Maija E., Martikainen, Pertti J., Schleper, Christa, Biasi, Christina

“…Bare peat surfaces created by frost action and wind erosion in permafrost peatlands have been shown to emit high amounts of nitrous oxide (N2O). With global…”
Get full text

Analysis of the Association of IL-1A, IL-1B, and IL-1RN Genetic Polymorphisms with Peri-implantitis in a Portuguese Population by Cardoso, José Maria, Ribeiro, Ana Clara, Proença, Luís, Noronha, Susana, Castro Alves, Ricardo

“…To investigate whether genetic variations in cytokine genes involved in the pathogenesis of peri-implantitis are associated with the occurrence of…”
Get more information

Evolution of price-cost margins during the troika intervention: Portugal: Market Competition and workers’ bargaining power in 2010-2016 by Figueira, Carlos, Pinheiro-Alves, Ricardo

“…Market competition is a key driver for an efficient allocation of resources and thus to sustained economic growth and higher aggregate welfare. Portugal…”
Get full text

Selective Laser Melting and Mechanical Properties of Stainless Steels by Gatões, Daniel, Alves, Ricardo, Alves, Bernardo, Vieira, Maria Teresa

“…Metal additive manufacturing (AM) has been evolving in response to industrial and social challenges. However, new materials are hindered in these technologies…”
Get full text

Plant-derived compounds stimulate the decomposition of organic matter in arctic permafrost soils by Wild, Birgit, Gentsch, Norman, Čapek, Petr, Diáková, Kateřina, Alves, Ricardo J. Eloy, Bárta, Jiři, Gittel, Antje, Hugelius, Gustaf, Knoltsch, Anna, Kuhry, Peter, Lashchinskiy, Nikolay, Mikutta, Robert, Palmtag, Juri, Schleper, Christa, Schnecker, Jörg, Shibistova, Olga, Takriti, Mounir, Torsvik, Vigdis L., Urich, Tim, Watzka, Margarete, Šantrůčková, Hana, Guggenberger, Georg, Richter, Andreas

“…Arctic ecosystems are warming rapidly, which is expected to promote soil organic matter (SOM) decomposition. In addition to the direct warming effect,…”
Get full text