TY - GEN N1 - 164 pp ; 24 cm L1 - http://rcin.org.pl/igipz/Content/5497/PDF/Wa51_18292_r2012-t84-z1_Przeglad_Geograficzny-Major.pdf M3 - Text J2 - Przegląd Geograficzny T. 84 z. 1 (2012) PY - 2012 IS - 1 EP - 121 KW - meltwater nourishment KW - peak high-water events KW - snow cover KW - Warta basin KW - Wielkopolska Lowland A1 - Major, Maciej PB - IGiPZ PAN VL - 84 CY - Warszawa SP - 105 T1 - Charakterystyka zasilania roztopowego w dorzeczu Warty na obszarzeNiziny Wielkopolskiej jako głównej składowej fal wezbraniowych = Characteristics of meltwater nourishment as the chief component of peakhigh-water events in the Wielkopolska Lowland part of the Warta Basin UR - http://rcin.org.pl/igipz/dlibra/publication/edition/5497 ER - TY - GEN N1 - 24 cm L1 - http://rcin.org.pl/igipz/Content/950/PDF/Wa51_10136_r2010-t82-z1_Przeglad-Geograficzny-Major.pdf M3 - Text J2 - Przegląd Geograficzny T. 82 z. 1 (2010) PY - 2010 IS - 1 EP - 113 KW - geoecosystems theory KW - areas without outflow KW - catchment A1 - Major, Maciej PB - IGiPZ PAN VL - 82 CY - Warszawa SP - 103 T1 - Możliwości zastosowania teorii funkcjonowania geoekosystemu do badań obszarów bezodpływowych = Possible applications of the geoecosystem theory in the study of areas without outlets UR - http://rcin.org.pl/igipz/dlibra/publication/edition/950 ER - TY - GEN N1 - 24 cm N2 - Closed basins are important and fixed elements of a post-glacial landscape, in which they may occupy rather a large percentage of the total area. Sometimes these fill to become bodies of water known as kettle ponds. Each such basin has its own closed catchment at the surface and, owing to the limited circulation of matter in these types of depressions, biogenic components often accumulate to excess. In that context, the work detailed here had as its main objective the identification of sources of biogenic substances like nitrates, ammonium-nitrogen and phosphates, with a view to determining the range of variability characterising their presence in small mid-field ponds present in the catchments of two of northern Poland’s rivers, i.e. the Parsęta and the Borucinka. Most of the kettle ponds under study could not be said to have particularly high contents of nitrate, given an average for the bodies of water studied within the Parsęta basin equal to 2.98 mg·dm-3. There was nevertheless considerable variability in concentrations of the ion – ranging from 0 to as much as 51.30 mg·dm-3. It was the “Sadkowo” pond that might be singled out here for its extremely high concentration (the aforesaid maximum value of 51.30 mg·dm-3; along with a mean value of 13.41 mg·dm-3). In this case a local factor is likely to have been operating – i.e. areal runoff pollution from fields involving nitrogenous compounds. Ponds in the Borucinka catchment had only low concentrations of nitrate, with a mean value for all kettle ponds studied there of just 0.24 mg·dm-3 (with values in the overall range 0 to 2.17 mg·dm-3). Concentrations of the analysed component were thus lower in the Borucinka catchment than in the Parsęta basin, with a key influencing factor likely to have been the sizes of the bodies of water studied. The Parsęta-basin examples were in fact smaller kettle ponds whose catchment features and morphometric parameters are such as to ensure higher concentrations of biogenic (especially nitrogenous) compounds in any standing waters. Mean concentrations of ammonium ions obtained for the Parsęta basin were of 0‑2.41 mg·dm-3, the value averaged for the six ponds being 0.95 mg·dm-3. However, four other Parsęta-basin ponds excluded from the study in fact reported very high values for NH4 + – of up to 25.55 mg·dm-3. The Borucinka catchment again contrasted with the Parsęta basin, with noted concentrations of ammonium-nitrogen both low and of limited variability (in the 0‑1.88 mg·dm-3 range). The average figures for all the depressions studied there was 0.09 mg·dm-3. The situation as regards the two forms of nitrogen was thus similar, with concentrations lower in the catchment of the Borucinka and higher in the basin of the Parsęta. Sizes of bodies of water would seem to be a factor influencing spatial differentiation of NH4 + concentrations. Where phosphate was concerned, kettle ponds within the Parsęta basin had a mean concentration of 0.57 mg·dm-3, with reported values from one pond to another ranging from 0 to 4.46 mg·dm-3. The Borucinka p ds again had lower concentrations of this biogenic substance across a narrower range of values (0 to 3.69 mg·dm-3, mean 0.19 mg·dm-3). L1 - http://rcin.org.pl/igipz/Content/182731/PDF/WA51_216474_r2021-t93-z1_Prace-Geogr-Major.pdf M3 - Text J2 - Przegląd Geograficzny T. 93 z. 1 (2021) PY - 2021 IS - 1 EP - 81 KW - northern Poland KW - biogenic substances KW - kettle ponds KW - chemical composition A1 - Major, Maciej. Autor A1 - Pietruszyński, Łukasz. Autor A1 - Cieśliński, Roman. Autor PB - IGiPZ PAN VL - 93 CY - Warszawa SP - 59 T1 - Zróżnicowanie przestrzenne wybranych składników biogennych w śródpolnych oczkach w Polsce Północnej = Spatial differentiation characterising selected biogenic components in mid-field kettle ponds of northern Poland UR - http://rcin.org.pl/igipz/dlibra/publication/edition/182731 ER - TY - GEN N1 - 24 cm N2 - The main aim of the work detailed here was to identify the level and composition of selected atmospheric pollutants supplied mainly with precipitation to the urbanized Różany Strumień catchment in Poznań, Poland; and to determine their impact on the chemical composition of water at subsequent stages of its circulation. The research was conducted in the hydrological years 2016-2020 as part of the Integrated Monitoring of the Natural Environment in Poland (ZMŚP) program, using the infrastructure of the ZMŚP’s "Poznań-Morasko" Base Station – of Adam Mickiewicz University in Poznań – the first such Base Station to be located within the boundaries of a large urban agglomeration. A key finding concerned a positive ion balance among nutrients supplied as a result of human activity (e.g. through fertiliser use) – involving NO3-, NH4+ and K+. Remaining chemical components (denudation ions) present in the waters circulating in the catchment are in turn characterised by a negative balance. L1 - http://rcin.org.pl/igipz/Content/237291/WA51_273241_r2022-t94-z4_Przeg-Geogr-Major.pdf M3 - Text J2 - Przegląd Geograficzny T. 94 z. 4 (2022) PY - 2022 IS - 4 EP - 436 KW - monitoring KW - Różany Strumień catchment KW - supply of pollutants KW - chemical composition KW - ion balance KW - water quality A1 - Major, Maciej. Autor A1 - Chudzińska, Maria. Autor A1 - Majewski, Mikołaj. Autor PB - IGiPZ PAN VL - 94 CY - Warszawa SP - 415 T1 - Wielkość dostawy wybranych zanieczyszczeń atmosferycznych i ich wpływ na jakość wód w zurbanizowanej zlewni Różanego Strumienia w Poznaniu w latach hydrologicznych 2016‑2020 = The level of supply of selected atmospheric pollutants and their impact on water quality in the urban catchment of Różany Strumień in Poznan, Poland, in hydrological years 2016‑2020 UR - http://rcin.org.pl/igipz/dlibra/publication/edition/237291 ER -