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Analiza vzdolžne povezanosti in ostalih vplivov na ribe v Kamniški Bistrici : diplomska naloga
Blažič, Aleš (Author), Mikoš, Matjaž (Mentor) More about this mentor... This link opens in a new window, Žagar, Dušan (Thesis defence commission member)

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Abstract
Kamniška Bistrica je 33 km dolga reka, ki izvira pod Kamniško-Savinjskimi Alpami, teče proti jugu mimo Kamnika in Domžal, ter se v reko Savo izliva tik nad sotočjem Save z Ljubljanico. Njen hudourniški značaj je botroval rednim poplavam, zato se je pojavila težnja po njeni regulaciji ter izkoriščanju vodne moči. Z gradnjo pragov in jezov za umiritev toka, stabilizacijo struge in zavarovanjem pred erozijo ter utrjenimi brežinami in visokovodnimi nasipi za varstvo pred poplavami, se je rečni sistem prekinil tako vzdolžno kot prečno. Posledice sprememb so utrpele vse obvodne in vodne živalske vrste, predvsem ribe. Najhujše so bile prizadete tiste vrste, ki se morajo vzdolž reke seliti na daljše razdalje. Mnogo vrst se ni prilagodilo spremembam vodnega okolja in so iz reke izginile. Številne prečne vodne zgradbe prekinjajo vzdolžno povezanost Kamniške Bistrice in ribam onemogočajo selitve, tako bistvene za njihov obstoj – to velja predvsem za potamodromne vrste rib (selitve znotraj celinskih voda) in diadromne vrste rib (selitve med morji in oceani ter celinskimi vodami), ki so skoraj popolnoma izumrle. V diplomski nalogi se spoznavamo z lastnostmi porečja Kamniške Bistrice in njenimi posebnostmi ter ocenjujemo vpliv številnih prečnih vodnih zgradb, kot tudi ostale dejavnike, ki vplivajo na ribje združbe v Kamniški Bistrici. Poglavitni cilj je določitev tistih prečnih vodnih zgradb, na katerih bi z izboljšano prehodnostjo rib in ostalih vodnih organizmov v največji meri prispevali k izboljšanju vzdolžne povezanosti Kamniške Bistrice.

Language:Slovenian
Keywords:gradbeništvo, diplomska naloga, UNI, VKI, Kamniška Bistrica, vzdolžna povezanost, prečne vodne zgradbe, ribe, prehodnost, prehodnost, indeks DCI, ribji prehodi, migracije
Work type:Undergraduate thesis (m5)
Tipology:2.11 - Undergraduate Thesis
Organization:FGG - Faculty of Civil and Geodetic Engineering
Year:2016
Publisher:[A. Blažič]
Number of pages:XIV, 97 str., 4 pril.
UDC:627.1:626.882(043.2)
COBISS.SI-ID:7728993 Link is opened in a new window
Views:1059
Downloads:440
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Secondary language

Language:English
Title:Analysis of longitudinal connectivity and other impacts on fish in the Kamniška Bistrica river
Abstract:
The Kamniška Bistrica river is 33 km long, it originates below the Kamnik-Savinja Alps, runs southward past Kamnik and Domžale, and flows in the Sava river just above the confluence of the rivers Sava and Ljubljanica. Its torrential character has resulted in regular flooding, so there has been always a tendency for its regulation and exploitation of water power. With the construction of barriers and dams for the purposes of slowing down the current, stabilization of the stream channel, insurance against erosion and fortified banks and embankments for flood protection, the river system was interrupted both longitudinally and laterally. All riparian and aquatic species, especially fish, have been exposed to the effects of these changes. The worst damage was made to the types of fish, which migrates over longer distances. Many species couldn’t adapt to the changes in the aquatic environment, and had disappeared from the river. Numerous transverse water structures are interrupting the longitudinal connectivity of the Kamniška Bistrica river and doesn’t allow fish migrations, so essential for their existence – particularly for potamodromous fish (migrations within inland waters) and diadromous fish (migrations between oceans / seas and inland waters) which are almost extinct. In this thesis we are getting to know the characteristics of the Kamniška Bistrica River Basin and its features, and assess the impact of numerous transverse water structures, as well as other factors that affect fish communities of Kamniška Bistrica. Our main objective is to identify those water structures, of which improvements on free passage for fish and other aquatic organisms would contribute most largely to the improvement of longitudinal connectivity of the Kamniška Bistrica river.

Keywords:graduation thesis, civil engineering, Kamniška Bistrica river, longitudinal connectivity, transverse river structures, fish, free passage, DCI index, fish passes, migrations

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