Razširjenost izbranih tujerodnih invazivnih rastlinskih vrst vzdolž reke Drete

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Language:	Slovenian
Year of publishing:	2011
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL PEF - Faculty of Education
Publisher:	[N. Obojnik]
UDC:	58(043.2)
COBISS:	8994121
Views:	1342
Downloads:	203
Average score:	0 (0 votes)
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Secondary language:	English
Secondary title:	ǂThe ǂdistribution of selected alien invasive plant species along the river Dreta
Secondary abstract:	The aim of this paper was to determine the occurrence, distribution and frequency of alien invasive plants along the river Dreta. Of interest were also the effects of environmental factors on the occurrence of invasive species. In the 2010 growing season, the state of the wider aquatic environment was examined, the invasive species along Dreta were surveyed, their phenological phases were identified, and their phytosociological classes and occurrence in different parts of the watercourse were determined. The watercourse was divided into 98 sections of variable length. The length of each section varied depending on environmental factors and changes in the occurrence of invasive species. 9 invasive species were identified. The most frequent species were found to be Erigeron annuus, Fallopia japonica, Impatiens glandulifera and Robinia pseudacacia. Most of the area is RCE class II. and III. RCE class II is typical of the upper and middle stream, whereas the lower stream shows characteristics that classify the section as RCE class III. Variability among invader groups can be explained in most cases by the dynamics of the river. On the right bank, this is shown by the shape of the riverbed; on the left bank, by the types of riparian vegetation present.
Secondary keywords:	botany;botanika;
File type:	application/pdf
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. Ljubljana, Pedagoška fak., Kemija in biologija, Biotehniška fak., Fak. za kemijo in kemijsko tehnologijo, Naravoslovnotehniška fak.
Pages:	XI, 78 f., [4] f. pril.
Type (ePrints):	thesis
Title (ePrints):	The distribution of selected alien invasive plant species along the river Dreta
Keywords (ePrints):	tujerodne rastline
Keywords (ePrints, secondary language):	alien plants
Abstract (ePrints):	Z nalogo smo želeli ugotoviti pojavljanje, razporeditev in pogostost invazivnih rastlinskih vrst vzdolž vodotoka Dreta. Zanimala nas je tudi povezava med okoljskimi dejavniki in pojavljanjem invazivnih vrst. V rastni sezoni 2010 smo ocenili stanje širšega vodnega okolja in popisali invazivne vrste vzdolž Drete ter določili njihovo fenološko fazo, sociološko oceno in njihovo pojavljanje glede na del obrežnega pasu. Vodotok smo razdelili na 98 različno dolgih odsekov. Njihova dolžina je bila odvisna od spreminjanja okoljskih dejavnikov in od spremembe v pojavljanju invazivnih vrst. Popisali smo 9 invazivnih vrst. Najbolj pogoste vrste so bile Erigeron annuus, Fallopia japonica, Impatiens glandulifera in Robinia pseudacacia. Večina Drete spada med II. in III. RCE kakovostni razred. II. RCE razred je značilen predvsem za zgornji in srednji tok Drete, medtem ko kaže spodnji tok značilnosti, zaradi katerih ga uvrščamo v III. RCE kakovostni razred. Največ variabilnosti v združbi invazivk pojasnimo z dinamiko reke. Na desnem bregu se je ta variabilnost odražala tudi z obliko struge, na levem bregu pa z tipom obrežne vegetacije.
Abstract (ePrints, secondary language):	The aim of this paper was to determine the occurrence, distribution and frequency of alien invasive plants along the river Dreta. Of interest were also the effects of environmental factors on the occurrence of invasive species. In the 2010 growing season, the state of the wider aquatic environment was examined, the invasive species along Dreta were surveyed, their phenological phases were identified, and their phytosociological classes and occurrence in different parts of the watercourse were determined. The watercourse was divided into 98 sections of variable length. The length of each section varied depending on environmental factors and changes in the occurrence of invasive species. 9 invasive species were identified. The most frequent species were found to be Erigeron annuus, Fallopia japonica, Impatiens glandulifera and Robinia pseudacacia. Most of the area is RCE class II. and III. RCE class II is typical of the upper and middle stream, whereas the lower stream shows characteristics that classify the section as RCE class III. Variability among invader groups can be explained in most cases by the dynamics of the river. On the right bank, this is shown by the shape of the riverbed; on the left bank, by the types of riparian vegetation present.
Keywords (ePrints, secondary language):	alien plants
ID:	8308548