Vsebnosti težkih kovin v izbranih rastlinskih vrstah s Cerkniškega jezera

Abstract

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Language:	Slovenian
Year of publishing:	2014
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[T. Dernikovič]
UDC:	57:582.32/.998:549.25
COBISS:	10183497
Views:	1650
Downloads:	164
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Secondary language:	English
Secondary title:	Heavy metals contents in selected plant species from lake Cerknica
Secondary abstract:	Cerknica lake is the largest intermittent lake in Slovenia that lies on karst surface in the heart of Notranjska. Cerknica field and its different habitat types were formed due to floods and dry periods of the lake. Size of the lake can grow up to 26 square kilometres - such a large area is exposed to various natural and anthropogenic factors affecting the structure and functioning of the ecosystem. Heavy metals represent less than 0,1 % of the Earth's crust, but some of them are necessary for the successful growth and development of organisms. They are called essential nutrients which are present in the soil in very low concentrations. If they occur in excessive concentrations they become toxic and cause adverse effects on organisms. In this case we consider such areas polluted with heavy metals. We analysed the concentrations of heavy metals in soil and selected plants at different locations on the Cerknica field. We have chosen a location along a busy road, fertilized lawn and lawn which is not exposed to anthropogenic influences. Based on the obtained results we demonstrated that the concentrations of individual elements vary depending on location and also depend on the plant species. Critical emission values were not excided on any of the sampled locations, so we can conclude that the sampled locations are not polluted by heavy metals.
Secondary keywords:	pollution;plant;onesnaževanje;rastlina;
File type:	application/pdf
Type (COBISS):	Bachelor thesis/paper
Thesis comment:	Univ. Ljubljana, Pedagoška fak., Biologija in kemija
Pages:	VII, 30 str., [3] f. pril.
ID:	8678247