Ekohidrološke raziskave na potoku Glinščica

Abstract

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Language:	Slovenian
Year of publishing:	2006
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[M. Koprivšek]
UDC:	504.4:556.53:627.15(043.2)
COBISS:	3217505
Views:	1473
Downloads:	463
Average score:	0 (0 votes)
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Secondary language:	English
Secondary title:	Ecohydrological investigations on the Glinščica stream
Secondary abstract:	As the size of the urban population was increasing, stream corridors have become more and more physically changed to ensure flood safety and to increase urban surfaces. For this purpose dams, accumulations, banks and other objects on the stream corridors have been built. Besides, riparian vegetation has been removed; river corridors have been straightened and often made of concrete. In comparison with natural streams, physically changed river corridors have different values of physical, chemical and biotic parameters, which influence self-purification capacity of the streams. We were investigating in which way these parameters were modified due to human influenced changes to river streams on five sampling sites on the Glinščica stream. For comparison we took another sampling site on its tributary Pržanec. First sampling site is located in almost unregulated reach, whereas the other four in regulated reach. Last two sampling sites are located in the reach with concrete channel. Depth of the river, water flow and velocity, composition of organic and inorganic substratum, temperature, dissolved oxygen, conductivity, pH, nitrates and phosphates were studied and also samples of periphyton and macroinvertebrates were taken in all four seasons. We have found out that downstream water quality decreases with increase of human-caused changes on the stream corridor. Water quality decreases mostly for the insufficiency of shading, which leads to increased water temperature, increased saturation with oxygen and increased pH on sunny summer days. Straightened and concrete river channels cause decreased depth of the river, increased water flow and velocity. All these changes have also got influence on decreased biodiversity of macroinvertebrates in physically changed river corridors.
Secondary keywords:	stream corridor;physically changed streams;selft-purification capacity;Glinščica;
File type:	application/pdf
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. Ljubljana, Fakulteta za gradbeništvo in geodezijo, Univerzitetni študij Vodarstva in komunalnega inženirstva
Pages:	XV, 100 str., pril.
Type (ePrints):	thesis
Title (ePrints):	Ekohidrološke raziskave na potoku Glinščica
Keywords (ePrints):	gradbeništvo;diplomska dela;UNI;rečni koridor;fizično spremenjen vodotok;samočistilna sposobnost;Glinščica;
Keywords (ePrints, secondary language):	stream corridor;physically changed streams;selft-purification capacity;Glinščica;
Keywords (ePrints, secondary language):	stream corridor;physically changed streams;selft-purification capacity;Glinščica;
ID:	8310987