This thesis deals with the evaluation of concentration levels of phosphates, nitrates and other parameters (pH, conductivity, suspended solids, alkalinity, total carbon, inorganic carbon, total organic carbon and total nitrogen) in fishpond systems at Tabor. Further was to consider the difference in value depending on the age of the systems and agricultural activities in their vicinity. Samples were taken in season 2015 Liderovické pond system (2 sampling points at the top of the system, one sampling point in the outflow from the system), Radimovická pond system (one sampling point at the top of the systém, one sampling point at the outlet of the system) and Jordan ( one sampling point at the outfall of the pond). The highest differences were found in the values of conductivity from 279 S.cm-1 to 1230 S.cm-1, the values of total carbon from 18.75 mg.l-1 to 67.33 mg.l-1, and the values of suspended solids from 1 mg.l-1 to 117.33 mg.l-1. The gradual increase in the value of NO3-N and PO4-P was registered during the season with Jordan. Based on the results we can say that the older (Radimovická system) showed higher levels of total carbon and younger (Liderovická system) showed higher NO3-N depending on land use in the surrounding area.

Memoria (licenciado en ciencias jurídicas y sociales) / No autorizada por el autor para ser publicada a texto completo / La primera estará dedicada a su crónica de vida, trataré de plasmar en las páginas siguientes toda su vida, tanto personal, profesional y política; en resumen la historia de don Gabriel Amunátegui. No obstante esta forma de desarrollar el tema, a fin de hacer más fácil su lectura y llevar un debido orden, se anuncian a través de pequeños títulos ciertos acontecimientos de relevancia en su vida, lo que también permitirá apreciar con mayor detalle su obra e importancia. La segunda parte estará dedicada a analizar en detalle uno de sus aspectos más relevantes; el que dice relación con su pensamiento constitucional, el cual se plasmó no sólo en sus opiniones de índole política, sino que también en los principios que trató de inculcar a sus discípulos en la Facultad de Derecho de la Universidad de Chile a través de su cátedra de Derecho Constitucional. Es así como se analizarán sus obras sobre la materia, entre las cuales podemos adelantar “ Partidos Políticos”, “ Manual de Derecho Constitucional” y “ Regímenes Políticos”; pero también analizaremos sus ideas relativas a temas de tanta relevancia en la materia como el Proyecto de Reforma a la Constitución de 1925, el Sufragio Universal y La Emergencia Constitucional, que vertía en opiniones de prensa, foros y charlas, y en trabajos para publicaciones universitarias.

The aim of those study was to find out an up-to date content of mercury in the tissues of fish in the dam reservoir Jordan in Tabor. To compare particular fish according to their species, age and dietary strategy and their capability to accumulate mercury. The distribution and the mutual rates of total content of mercury in particular tissues of carnivorous and non-carnivorous species of fish were determined (muscle, liver, kidneys). Dedicated atomic absorption spectrophotometer AMA 254 was used to determine the total content of mercury. The results show that exceeding the former hygienic limit 0.1 mg.kg-1 w. w. in the muscle of non-carnivorous fish with almost all samples. It was the low-age carnivorous species of fish was probably the cause that the hygienic limit (0,5 mg.kg-1 w. w.) was exceeded only rarely (in the muscle a five-year-old asp, Aspius aspius, 0,888 {$\pm$} 0,041 mg.kg-1 w. w.). The pond Kosin located above the dam reservoir Jordan was exploitation as a comparative locality. The average content of mercury in the muscle of selected indicator species of fish in the reservoir Jordan - bream large (Abramis brama) at the age of 5 years - it was 0,241 {$\pm$} 0,080 mg.kg-1 w. w., whereas from comparative locality, from the pond Kosin, for the same species and age of fish it was only 0,045 {$\pm$} 0,008 mg.kg-1 w.w., i.e. more than five times more of the content in comparison with an unweighted locality. The realized results also show that the burden of the fish with mercury for a common consumer does not exceed neither the {\clqq}hazard index`` (HI) nor the toxicological limit ( the maximum recommended ration a week from the food is 1,6 {$\mu$}g MeHg per 1 kg of body weight according) to the WHO. However, with more intensive consumption of mainly carnivorous fish from the reservoir Jordan, e.g. of the sport fishermen´s family members, it could cause risk from this consumption ( i.e. HI > 1). Further work should be aimed at monitoring of the content of mercury in the tissues of mainly predators of higher age category.