Vpliv prispevnega območja in gospodarjenja z jezerom na evtrofne in sukcesijske procese v jezerskem ekosistemu - primer ribnikov v dolini Drage pri Igu

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Language:	Slovenian
Year of publishing:	2008
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[B. Gradišar]
UDC:	504.4:556.55(043.2)
COBISS:	3947873
Views:	1624
Downloads:	439
Average score:	0 (0 votes)
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Secondary language:	English
Secondary title:	Influence of the catchment area and management of the lake to the eutrophic and succession processes in the lake ecosystem - the case of fish ponds in theDraga Valley in the vicinity of Ig
Secondary abstract:	Cycle of matter in lake ecosystems and the influence of loading with nutritional substances on eutrophic process are presented in the Graduation Thesis; abiotic factors are discussed, the role of planktonic and macrophyte vegetations and interactions that occur among them are described. In particular, the Thesis describes characteristics of eutrophication, ways of preventing it from appearing, especially bio-manipulation as a way of changing of biomass on higher trophic levels that by regulating the proportion between zooplankton and phytoplankton enables submerged macrophytes and leads to cleaner water. In connection with eutrophic process, land use in hydrographic hinterland, and the way of management, rules of succession process and its course dynamics in the lake ecosystems are presented. As well described is the influence of morphological characteristics of the lake to distribution of macrophyte vegetation and silting up. In the second part the existing conditions, management and problems in ponds in the Draga Valley near Ig are treated. In order to obtain a better insight into the condition of ponds, measurements of basic physical-chemical parameters with the Hydrolab Datasonder 4 probe were performed. Also, measurements of transparency with the Secchi Disc were carried out. Taking into account the results of the measurement, analysing of the existing condition of ponds and conditions for prospering of various biological communities, the regulation plan proposal is represented, whose basic purpose is improvement of the condition and renovation of the deserted ponds. Also given are basing points and directives for the management of ponds.
Secondary keywords:	graduation thesis;eutrophication;aquatic macrophytes;cycle of matter;lake ecosystems;abiotic factors;fish farming;succession process;plankton;ponds in the valley of Draga near Ig;
File type:	application/pdf
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. Ljubljana, Fakulteta za gradbeništvo in geodezijo, Univerzitetni študij Vodarstva in komunalnega inženirstva
Pages:	XII, 146 str., pril.
Type (ePrints):	thesis
Title (ePrints):	Influence of the catchment area and management of the lake to the eutrophic and succession processes in the lake ecosystem - the case of fish ponds in the Draga Valley in the vicinity of Ig
Keywords (ePrints):	evtrofikacija;vodni makrofiti;kroženje snovi;jezerski ekosistemi;abiotski dejavniki;biomanipulacija;ribogojstvo;sukcesijski proces;plankton;ribniki v dolini Drage pri Igu
Keywords (ePrints, secondary language):	eutrophication;aquatic macrophytes;cycle of matter;lake ecosystems;abiotic factors;biomanipulation;fish farming;succession process;plankton;ponds in the valley of Draga near Ig
Abstract (ePrints):	V diplomski nalogi je predstavljeno kroženje snovi v jezerskih ekosistemih ter vpliv obremenjevanja s hranili na evtrofni proces, obravnavani so abiotski dejavniki, opisana je vloga planktonskih in makrofitskih združb ter interakcij do katerih prihaja med njimi. Podrobneje so opisane značilnosti evtrofikacije, načini njenega preprečevanja, še posebej biomanipulacija kot način spreminjanja biomase na višjih trofičnih nivojih, ki z uravnavanjem razmerja med zooplanktonom in fitoplanktonom omogoči uspevanje submerznih makrofitov in privede do bolj čiste vode. V povezavi z evtrofnim procesom, rabo tal v hidrografskem zaledju ter načinom gospodarjenja so predstavljene zakonitosti sukcesijskega procesa in dinamika njenega poteka v jezerskih ekosistemih. Opisan je vpliv morfoloških značilnosti jezera na porazdelitev makrofitske vegetacije ter zamuljevanje. V drugem delu naloge so obravnavane obstoječe razmere, gospodarjenje ter problematika na ribnikih v dolini Drage pri Igu. Z namenom pridobiti boljši vpogled v stanje ribnikov so bile izvedene meritve osnovnih fizikalno-kemijskih parametrov s sondo Hydrolab Datasonder 4 ter meritve prosojnosti s Secchijevim diskom. Ob upoštevanju rezultatov meritev, analiziranju obstoječega stanja ribnikov ter razmer za uspevanje različnih življenjskih združb, je predstavljen predlog ureditvenega načrta, katerega osnovni namen je izboljšanje stanja ter obnovitev danes zapuščenih ribnikov. Podana so tudi izhodišča in usmeritve za upravljanje in gospodarjenje z ribniki.
Abstract (ePrints, secondary language):	Cycle of matter in lake ecosystems and the influence of loading with nutritional substances on eutrophic process are presented in the Graduation Thesis; abiotic factors are discussed, the role of planktonic and macrophyte vegetations and interactions that occur among them are described. In particular, the Thesis describes characteristics of eutrophication, ways of preventing it from appearing, especially bio-manipulation as a way of changing of biomass on higher trophic levels that by regulating the proportion between zooplankton and phytoplankton enables submerged macrophytes and leads to cleaner water. In connection with eutrophic process, land use in hydrographic hinterland, and the way of management, rules of succession process and its course dynamics in the lake ecosystems are presented. As well described is the influence of morphological characteristics of the lake to distribution of macrophyte vegetation and silting up. In the second part the existing conditions, management and problems in ponds in the Draga Valley near Ig are treated. In order to obtain a better insight into the condition of ponds, measurements of basic physical-chemical parameters with the Hydrolab Datasonder 4 probe were performed. Also, measurements of transparency with the Secchi Disc were carried out. Taking into account the results of the measurement, analysing of the existing condition of ponds and conditions for prospering of various biological communities, the regulation plan proposal is represented, whose basic purpose is improvement of the condition and renovation of the deserted ponds. Also given are basing points and directives for the management of ponds.
Keywords (ePrints, secondary language):	eutrophication;aquatic macrophytes;cycle of matter;lake ecosystems;abiotic factors;biomanipulation;fish farming;succession process;plankton;ponds in the valley of Draga near Ig
ID:	8309015