The presented studies were carried out to get more information about physiological properties of methylotrophic bacteria selected from sewage sludges derived from mechanical and biological sewage treatment plants. All the isolated bacterial strains belonged to facultative methylotrophs. The majority of them utilized glucose, starch and lipids. Moreover, most of them were also found to possess p...

This study investigated soluble organic nitrogen (sON) activity in batch reactors mimicking nitrifying moving bed biofilm (MBBRs). work was divided into two objectives focusing on the production and degradation of sON, respectively. For first objective, a synthetic feed that did not contribute any used results indicated irrespective presence influent carbon (0 versus 400 mg COD/L) reactors, sON...

Using zeolite-rich tuffs for improving soil properties and crop N-use efficiency is becoming popular. However, the mechanistic understanding of their influence on N-processes still poor. This paper aims to shed new light how natural NH4+-enriched chabazite zeolites alter short-term N-ammonification nitrification rates with without use inhibitor (DMPP). We employed 15N pool dilution technique de...

In arid environments, dry and wet years have similar number of small rainfall events but wet years result from the occurrence of a few large rainfall events. What are the implications of these different precipitation patterns on ecosystem functioning? Here, we examined the differential response of soil processes to wet and dry years. Specifically, we assessed litter decomposition and soil N min...

The purpose of the study was to investigate changes of soil chemical and biological properties changes resulting from a single application of the fungicide Ridomil Gold plus copper (Ridomil Gold plus)(mefenoxam 6% + copper oxide 60%) at the following rates 0.25, 0.5, 1, 2, and 10 g m(-2). Selected chemical properties generally differed between fungicide rates over longer incubation periods. Mic...

Net ecosystem ammonification and nitrification rates were estimated in the inner and outer segments of the coastal upwelling system of the Ría de Vigo during September 1990 and 1991. A multiparameter inverse method was used, combining short-time-scale changes (2 to 4 d) in the distributions of salinity, temperature, ammonium, nitrite, nitrate and dissolved oxygen with freshwater and heat budget...