The relation between zooplankton biomass and size structure and the trophic state and depth of shallow lake ecosystems was studied. Presented dataset describes monthly sampling within the experimental season 2011. Generally, total zooplankton biomass clearly correlated with high nutrient concentration mesocosms.

The diploma thesis prepares the evaluation of the feed ration during the period of plant nutrition of calves in the monitored enterprise. The feed is evaluated on the selected farm on the basis of nutrient needs with respect to the recommended values - standards. Above the award, the feed for the heifers is evaluated. In the case of heifers, the feed dose, which is presented during the rearing of heifers, is compared with the average daily increments of one year (2017).

THE INFLUENCE OF CENTRAL SEROTONINERGIC AND DOPAMINERGIC ACTIVITY ON NUTRITIONAL AND METABOLIC PARAMETERS MUDr. Ludmila Brunerová SUMMARY Introduction: Neuromediators dopamine and serotonin play a significant role in homeostatic and hedonic regulation of food intake, may exert direct metabolic effects and particularly serotonin influences affectivity. Their central activity could be quantified by functional tests. Common regulatory mediators of metabolism and affectivity represent an interesting research goal. Aims of study: The first aim was to describe the relationship between central serotoninergic activity measured by citalopram challenge test, affectivity, preference of macronutrients in food and metabolic profile in healthy men. The second aim was to confirm the use of sublingual apomorphine test as a functional test for assessment of central dopaminergic activity. The third aim was to reveal the relationship between central dopaminergic activity measured by sublingual apomorphine test, preference of macronutrients and metabolic profile. Methods: The study was performed on 42 healthy men (average age 43.5 ± 7.4 years and average BMI 27.4 ± 5.7 kg/mš) within 4 days with a week interval in between them. Anthropometric and...

Thesis was solving in senior home of Mistra Křišťana in Prachatice. The goal of thesis was to evaluation nutritional tendencies and nutritive supply at seniors institutional care it also structure on menu and analyses filling of norm of need from the view of intake energy, macronutrients and selected micronutrients. The concept of thesis is divided into two parts. The first part comparances intake energy and the norm of need at seven men and women during ten months. The second part presents results of questionary which was selected three hypothesis. The first hypothesis: Monitoring health nutrition of respondents concidering their education. The second hypothesis: Respondent{\crq}s physical activites concidering their sex. The third hypothesis: Monitoring of observance dribling regime concidering their sex. The result of thesis say that all the women who were monitored were overweight. It was analyses on rate body mass index and percent of fat at also perimeter of waist. Body Mass Index rate at man was usually in optimal range 20 - 25, despite this high percent of body fat, which is created by decreasing of muscle tissue and increasing of body fat. Discovered rates correspond with results comparising intake energy and nutrients with norm of need. All respondents had high intake of lipid and high intake proteins especially women. Intake of sacharide and dietary fiber was optimal. Be results show that respondents have low intake of vitamin D. When compared average intake vitamins and minerals with the norm of need. At minerals the increased intake selenium was found-approximately about fourteen percent from norm of need. At evaluation calcium and phosphorus was analysed opposite rate 1:1,2. Calcium intake is long time under norm of need in divide 20 - 40 %. The same conclusion is valid for magnesium. Magnesium intake is 15 - 30 % under norm of need. The results were consulted with a diet nurse who had information of higher creation of osteoporosis at seniors. The results of three testing hypothesis in the second part of thesis are: monitoring health of food of respondents depends on their education. The second testing hypothes showes that physical activites at seniors doesn{\crq}t depend on their sex. The last testing hypothes found out that krepiny drinking regime doesn{\crq}t depend on their sex. Thirty questionary were analyses twenty women and ten men took a part. Women were more interested in the questionary than man because they were more interested in questions of health food. A questionary included fourty-six questions which were divided into four parts. The first part is focused on information about respondents. The second part is about correct dribling regime and the fourth part of the questionary is focused on satisfaction on seniors in senior home. Part of thesis is recommendation on what concentrate attention in nutrition client senior home.

Increased nutrient input into wet-meadow ecosystems can affect activity of decomposers and carbon cycle in soil. This thesis observed the effect of fertilization on carbon sequestration and mineralization in soils of wet meadows, which differed in quantity and quality of soil organic matter. Studied locations are situated in the protected area Třeboňsko.

There are remarkable changes in water quality at the Jenínský stream catchment that lies in the Šumava foothills which were caused by change in land use. Two subcatchments, called J1 and J2, were monitored. In the first period 1983-1985, the two subcatchments were agriculturaly used, the land was fertilized and ploughed and cereals and corn were grown. In the second period 2004-2008, there were grasslands and the land was extensively used as pasture. This change in land use caused evident changes in water quality at the Jenínský stream catchment. The decrease of all monitored indices was remarkably seen in the concentrations of nitrate and ammonium. The average nitrate concentration in 1983-1985 was 39,5 mg . l-1, and decreased by 43,3% to the value of 16,9 mg . l-1 in 2004-2008. The greatest decrease of 85,9% was found in average ammonium concentration (0,4 mg . l-1 dropped to 0,05 mg . l-1). The positive effect of the change from arable land to grassland was confirmed and we can see it in the amount of nitrogen compounds and resulting improvement of water quality.

This thesis deals with the study of the biological activity of humic substances. Based on the literature review preparation procedures were optimized in order to develop new hydrogel forms containing humic substances and biopolymers with high swelling capacity. Besides methodology for the rapid assessment of the biological activity obtained in laboratory conditions were designed and tested. The experimental part focused on characterization of hydrogel samples by means of routine physico-chemical methods, the main attention was paid to sorption of water and release of humic substances into solution. Then the prepared hydrogel materials were tested focusing on the growth effects on the maize. The absorption of mineral nutrients by the roots of plants were studied as well. The motivation of this work comes from the potential of agricultural and environmental applications of such hydrogel materials resulting in a renewal of previously exhausted organic content of soils and consequent interruption of substantial soil degradation.

The aim of this diploma thesis was to compare quality of protein silages made of lucerne (Medicago sativa L.) (there were used two varieties Holyna and Tereza) and red clover (Trifolium pratense L.) (tetraploid variety Amos and diploid variety Spurt) ensiled with low dry matter content 16–20 %. Experimental parcels were founded in 2013. Plots of lucerne were harvested for three following years, plots of red clover were harvested for two following years. Green feed was ensiled into laboratory microsilos directly after harvesting. The silage quality was compared within species and variety and within different silage additives. There were analyzed contents of organic nutrients, digestibility in green material and organic nutrients, digestibility, quality of silage extracts, losses and amount of silage effluents in silages. Silages made of red clover had significantly (p <0,05) lower pH, ammonia content, content of butyric acid and proteolysis level compared to lucerne silages. Amos variety had also significantly higher content of lactic acid compared to both lucerne silages. The effect of chemical silage additive on silage quality was significant. Silages treated with chemical additive had significantly lower (p <0,05) pH, ammonia content, content of acetic acid, ethanol and level of proteolysis compared to untreated variant and variant treated with biological additive.

This thesis is focused on P, K and Mg fertilizing in precision agriculture all shown on a model of winter wheat with expected yield of 7,7 t.ha-1. Although it is a model, it is based on the specific results of laboratory analysis of the collected samples from the lands around Otnice village. Six options of fertilizing were compared. Four of them concerned variable application; in accordance with the principles of precision farming, spatial differences in the content of nutrients P, K, Mg were taken into account. Two variants of variable-rate fertilization were calculated using the yield potential made from satellite imagery. Variable rates were defined with geographic information system environment. The other two options were computed with the traditional approach, when the land is treated as uniform unit and only one amount of the fertilizer is applied to it. There were two methods used for correction the fertilizer amount. One traditional and other could have divided the parcels into sixteen classes instead of five as traditional method. The variable variation which took into account the spatial differences in nutrient content and also the yield potential was evaluated as the most optimal option.

The aim of this diploma thesis is determination of the influence of deficient nutrition in combination of Pseudomonas syringae pv. tomato infection on tomato (Solanum lycopersicum L.) growth and development. In hydroponic cultivation experiment, tomato variety Darinka was cultivated in solutions without N, P, K, Ca, Mg and in variant with all nutrition (control variant). The dry matter of root and stem was weighed and root length, density and electrical capacitance were set. The content of nutrition in plants was also assessed. The level of infection was determined in 1st term, the highest level had plants with insufficient of Ca and P. High reduction of root and stem dry matter was found in Ca, N, P and Mg deficient plants. The low root electrical capacitance, length and density was determined in plants with Ca, N a P deficiency within infected group and in Ca and N deficient plants within noninfected group. Bacterial infection caused the reduction of all observing parameters in contrast to the plants from noninfected group. The antagonism and synergism between the elements were also showed.