|
|
Vliv pastevních pozemků na parametry vody v malém vodním toku
KUBELOVÁ, Barbora
The diploma thesis deals with the comparison of selected surface water properties in a small watercourse in the "Pasecký potok" and "Váčkový potok" river basins in 2018 and 2019. The evaluation was performed in three currency profiles- the upper specific profile of "Váčkový potok", the lower specific profile of "Váčkový potok" and "Pasecký potok". The differences between these streams are in the management of the landscape and in the use of the landscape by man, which means a significant effect on the chemistry of water in surface water. The monitored hydrochemical indi-cators in the profiles were electrolytic conductivity, pH, insolubles, nitrates, phosphates, total organic carbon, inorganic carbon, total carbon and total nitrogen. Limit values of Government Regulation No. 401/2015 Sb. were not exceeded in the upper profile of "Váčkový potok" and in the profile of "Pasecký potok". The values of total nitrogen was exceeded in the lower specific profile of "Váčkový potok".The basin of the lower profile of "Váčkový potok" is located near arable land and in this profile other values were higher- electrolytic conductivity, pH, nitrates, total organic carbon, inorganic carbon and total carbon were proved. Human intervention in the upper profile of "Váčkový potok" and in "Pasecký potok" is small. We can consider the state of ecosystems here to be the most similar to a natural landscape.
|
|
|
The influence of agricultural activities on the stream water quality in natural reservation
NOVOMĚSTSKÁ, Markéta
The aim of this thesis is to evaluate the impact of agricultural activity on hydrochemical parameters of surface waters in connection with the occurence of specially protected species within the surface waters of a monitored area. A model was chosen for the evaluation of the situation - Bedřichovský potok, which is located in Novohradské hory. The river consists of lower and upper sub-waters. Forest management is applied within upper sub-basin, while agricultural management on arable land, meadows and pastures is used in the lower sub-basin. The monitored parameters were indicators of eutrophication of surface waters: Nitrate nitrogen (N-NO3-), Phosphate phosphorus (P-PO43-), and conductivity of undissolved material (NL105). The results showed that the agriculture management (especially on arable land) burdens the soil with nutrients and consequently erosion enters the substances, bringing them to the surface and ground water as a result. There was an increase of substances in the water after rain.
|
|
|
Definition of reference conditions of mountain and submountain streams as a part of ecological survey
Leipeltová, Petra ; Matoušková, Milada (advisor) ; Kliment, Zdeněk (referee)
The present thesis deals with the definition of reference conditions of mountain and submountains streams in selected European countries and on the requirements of the Water Framework Directive 2000/60/EC. Here is presented the Typology of watercourses of Czech Republic and the delimitation of mountain and submountains types in selected locations in the Ore Mountains and the Bohemian Forest. In the second part of the work is solved hydromorphological status of watercourses. Monitoring was conducted on streams Rolava, Černá voda, Křemelná, Slatinný p., Modravský p., Roklanský p. and Javoří p. To evaluate the degree of hydromorphological quality was used Hydroecological monitoring method. The thesis includes a brief assessment of physical-geographic characteristics mentioned flows with emphasis on the runoff regime in their basins. In conclusion, there are identified and defined reference parts of streams and their characteristics. Keywords: reference conditions, typology of streams, hydromorphological status, hydromorphological quality, hydromorphological monitoring, runoff regime
|
|
|
The chemistry of the fishpond water ČR - long term development of the chemistry of the fishpond water - effect of eutrophication
STRNADOVÁ, Johana
The thesis deals with eutrophication of fishponds in the sixteen regions in the Czech Republic. Data about basic chemistry and nutrients (nitrogen and phosphorus) were evaluated in terms of temporal (during the years 1995 - 2003 and 2012) and spatial differences. ANOVA one-way and linear regression analysis, were used for detail description. Only regions (locality) Lednice, Brno, Ostrava and Řežabinec showed regular differences in most of the parameters. Between other regions individual differences were frequently found, mostly in conductivity and alkalinity, which are primarily reflect the different character of the catchments e.g. natural conditions. Less significant differences were observed in total N, and minimal differences were found in total P and chlorophyll. The high level of fishpond eutrophication has been also demonstrated by similarities in seasonal trends. Increasing the average value of the total P from 0, 23 mg/L to 0, 32 mg/L and increased chlorophyll concentration from 76 ?g/L to 218 ?g/L from spring to summer, are typical patterns for shallow fishponds heavily loaded with nutrients. The results allow to conclude, that fishpond eutrophication level is similar over the most of studied regions and remains unchanged during the last decades.
|
|
| |
|
| |
|
| |
|
|
Inventarizace zásahů do vodního režimu rašelinišť na území NP Šumava a vyhodnocení úspěšnosti prováděných revitalizačních opatření
Správa NP a CHKO Šumava, Kašperské Hory ; Loskotová, Eva ; Stíbal, František ; Bufková, Ivana
Ve druhém roce řešení pokračovala inventarizace rašelinišť v oblastech Křemelná, Srní, Kvildské pláně a Knížecí pláně. Byla upravena detailní verze metodiky mapování rašelinišť. Inventarizace zásahů do vodního režimu byla prováděna v oblastech Křemelná, v části Modravských slatí a Kvildské pláně. byly zpracovány revitalizační projekty a provedena revitalizace na lokalitách JV Cikánské slatě, Luzenské údolí a Hučina. byly provedeny vegetační záznamy na dalších lokalitách (Schachtenfilz, nad Rybárnou, Blatenské slatě a Biskupská slať).
|
|
| |
|
|
Význam revitalizace odvodněných rašelinišť pro nápravu vodního režimu a zachování biodiverzity rašelinišť v šumavské krajině
Správa NP a CHKO Šumava, Kašperské Hory ; Loskotová, Eva ; Stíbal, František ; Bufková, Ivana
Jedním z hlavních úkolů projektu je analýza hydrochemických poměrů na odvodněných a neodvodněných ombrotrofních i minerotrofních typech rašelinišť. Dalším cílem projektu VaV je vyhodnocení vlastní reakce rašeliništních ekosystémů na provedená revitalizační opatření, včetně širších hydrologických vazeb v rámci povodí. Základní přístup pro realizaci spočívá především v pokračování detailního monitoringu sledovaných odvodněných rašelinišť nastartovaného předchozím projektem VaV SL1/21/04. Tento monitoring je zaměřen na sledování hladiny podzemní vody na rašeliništi a jejího chemismu, které vypovídají o stabilitě vodního režimu a intenzitě rozkladných/degradačních procesů v rašelinném humolitu. V roce 2007 pokračoval monitoring na sledovaných lokalitách - byly zjištěny vyšší hladiny podzemní vody na rašeliništích v porovnání s předchozími roky, což koresponduje s výrazně vyšším množstvím srážek v letním období 2007. Výsledky: 1. Monitoring hydrochemických parametrů a vegetace v oblasti Modravských slatí, 2. Monitoring hydrochemických parametrů a vegetace v kotlině Křemelné.
|
guest ::
