This study investigates the occurrence of greenhouse gases (GHGs) and the role of groundwater as an indirect pathway of GHG emissions into surface waters in a gaining stretch of the Triffoy River agricultural catchment (Belgium). To this end, nitrous oxide (N2O), methane (CH4) and carbon dioxide (CO2) concentrations, the stable isotopes of nitrate and major ions were monitored in river and groundwater during 8 months. Results indicated that groundwater was strongly oversaturated in N2O and CO2 with respect to atmospheric equilibrium (50.1 vs. 0.55 µg/L for N2O and 14,569 vs. 400 ppm for CO2), but only marginally for CH4 (0.45 vs. 0.056 µg/L), suggesting that groundwater can be a source of these GHGs to the atmosphere. Nitrification seemed to be the main process for the accumulation of N2O in groundwater. Oxic conditions prevailing in the aquifer were not prone to the accumulation of CH4. In fact, the emissions of CH4 from the river were one to two orders of magnitude higher than the inputs from groundwater, meaning that CH4 emissions from the river were due to CH4 in-situ production in riverbed or riparian zone sediments. For CO2 and N2O, average emissions from groundwater were 1.5 × 10 5 kg CO2 Ha-1 y-1 and 207.1 kg N2O Ha-1 y-1 , respectively. Groundwater is probably an important source of N2O and CO2 in gaining streams but when the measures are scaled at catchment scale, these fluxes are probably relatively modest. Nevertheless, their quantification would better constrain nitrogen and carbon budgets in natural systems.
In this study the variability of greenhouse gases (GHGs) concentrations along lateral and vertical dimensions of the chalk aquifer located in the eastern part of Belgium was examined in order to understand its dependence on hydrogeological and hydrogeochemical conditions. Groundwater samples from 29 wells/piezometers were analyzed for concentrations of nitrous oxide (N 2 O), carbon dioxide (CO 2), methane (CH 4), major and minor elements and stable isotopes of nitrate (NO 3 −), nitrous oxide (N 2 O), sulfate (SO 4 2−) and boron (B). For lateral investigations, four zones with different environmental settings were identified (southern, central, northeastern and northern). Groundwater was oversaturated with GHGs with respect to its equilibrium concentrations with the atmosphere in all zones, except the northern one, undersaturated in N 2 O (0.07 ± 0.08 μgN/L vs. 0.3 μgN/L). Vertical dimension studies showed the decrease in CO 2 concentration and significant changes in both isotope signatures and concentration of N 2 O with depth. The production of N 2 O could be attributed to a combination of nitrification and denitrification processes occurring at different depths. CO 2 concentration is controlled by the process of dissolution of carbonate minerals which constitute aquifer geology. CH 4 is produced due to methanogenesis in deeper parts of the aquifer, though its thermogenic origin is also possible. Differences in hydrogeochemical settings and changing intensity of biogeochemical processes across the area and with depth have considerable effect on GHGs concentrations. Thus, before estimating GHGs fluxes at the groundwater-river interface insights obtained from larger-scale investigations are required in order to identify the representative spatial zones which govern GHGs emissions.
The theme of the Second World War and the Holocaust is one of the topical themes of contemporary fiction and cinema. Outstanding writers and directors of our time are turning to the embodiment of this tragic topic. They set themselves the task of comprehending the past and giving the third millennium generation spiritual experience that will help young people combat the manifestations of racism and xenophobia in the modern world. The article deals with the novel “Schindler’s Ark” by Th. Keneally, “The Children of Noah” by E.-E. Schmitt, “The Boy in the Striped Pajamas” by J. Boyne, “The Book Tief” by M. Zuzak and movies that are based on these books. In the genres of a historic novel and psychological story based on the documents, the writers revealed the complicated social processes in Europe during 1930-1940. The writers described the historic events within the life of ordinary people who lived in the terrible circumstances of the totalitarian system. The symbols playedthe main role in revealing the subject of the Holocaust in the novels and films about the Second World War and the Holocaust. Thomas Keneally continued the traditions of romantic irony and added to it some social, psychological and philosophical meanings. The irony in the novel by Thomas Keneally “Schindler’s Ark” plays an important role in the investigation of European society in the tragic period of the 20thcentury. In the novels by Thomas Keneally irony takes place on the different levels such as plot, composition, imagology, time and space, style and language. T. Keneally broadens the meaning of irony and its function in the documentary and historic novel. The irony in the novel “Schindler’s Ark” maintains some main functions: social for explaining the anti-humanistic essence of fascism, war, racial hatred, research in investigating the tragedy of the Holocaust and its consequences, psychological in revealing the psychology of people of different social class, philosophical in discussing the important issues of human life in the word, axiological dealing with the values of mercy, morality, the ability to resist violence. T. Kenealy represents different forms of irony such as the irony of the narrator, the irony of the author, the combination of controversial documentary facts, the contradiction of phenomenon and notions, the comparison of the different points of view, self-irony, irony as inner enlightenment, catharsis. In the novel “Schindler’s Ark” by T. Kenealy the author of the article analyzed the traditions of world literature such as B. Brecht within the motive of personal financial profit from the war, N. Gogol within the motive of buying and selling the dead souls. The writer represented these motives in his own way as the events took place during the real historic time, and he found the inner power in people of past century to keep their life, humanity and culture on the Earth. The irony is a unique feature of T. Keneally’s individual style and it enriched the genre of novel.
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