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Okoljska ocena in razporeditev makrofitov v reki Ižici
Peternel, Andrej (Author), Germ, Mateja (Mentor) More about this mentor... This link opens in a new window

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Abstract
Namen naloge je bil ugotoviti prisotnost, razporeditev in pogostost različnih taksonov makrofitov v reki Ižici ter oceniti, kako na njihovo pojavljanje vplivajo morfološki, fizikalni in kemijski dejavniki. V rastni sezoni leta 2016, smo reko Ižico razdelili na 26 zveznih in 12 nezveznih odsekov. V mesecih junij, julij, avgust in september smo skupno opravili 4 vzorčenja. Na vseh odsekih smo popisali prisotnost in pogostost različnih taksonov makrofitov ter zabeležili njihovo rastno obliko, izmerili fizikalne in kemijske parametre, ocenili stanje širšega vodnega okolja po Riparian, Channel and Environmental (RCE) metodi, v nezveznih parametrih pa smo ocenili tudi habitatne parametre. Na 7 vzorčnih mestih smo na vseh 4 vzorčenjih odvzeli vzorec vode za analizo nitratov in fosfatov, ki smo jo opravili v laboratoriju. V reki Ižici smo popisali kar 40 taksonov makrofitov, ki so glede na okoljske dejavnike različno razporejeni. Na podlagi ocene morfoloških dejavnikov smo ugotovili, da je stanje reke Ižice z izjemo 1. zveznega odseka, kjer teče skozi naselje Ig, najbolj kakovostno v začetnem delu ter da se stanje dolvodno slabša. Reko Ižico smo uvrstili od 2. do 5. RCE kakovostnega razreda. Pestrost makrofitskih taksonov je najvišja v srednjem delu reke Ižice. Pogostost in številčnost taksonov se preko rastne sezone spreminjata, najvišji sta na višku rastne sezone, v avgustu. Najvišjo pogostost, predvsem v spodnjem delu reke Ižice, imajo nitaste alge ter vrsti Sagittaria sagittifolia in Potamogeton natans.

Language:Slovenian
Keywords:makrofiti, širša okoljska ocena, vodotok, reka Ižica
Work type:Master's thesis/paper (mb22)
Organization:BF - Biotechnical Faculty
Year:2019
COBISS.SI-ID:4988239  Link is opened in a new window
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Downloads:4
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Secondary language

Language:English
Title:Environmental assessment and macrophyte distribution of the river Ižica
Abstract:
The aim of the present research was to to determine the distrubution, abundance and frequency of macrophyte taxa in the river Ižica and to determine influence of physical and chemical factors of water on their distribution and to establish the relation between wider environment characteristics on macrophyte taxa abundance and distribution. In the growth season in 2016, we divided river Ižica into 26 connected and 12 separated stretches. In June, July, August and September, we performed 4 samplings. In all stretches, the presence, frequency and growth form of macrophytes were recorded. Physical and chemical parameters were measured and the status of the physical and biological condition was assessed, according to the Riparian, Channel and Environmental Inventory. In the separated stretches, habitat parameters were also determined. At 7 sampling sites, water samples were taken for later analysis of nitrates and phosphates, that was performed in the laboratory. We recorded as many as 40 taxa of macrophyte taxa, which are distributed differently according to environmental factors. We estimated the RCE status of the river Ižica, with exception of the 1. stretch that runs through Ig, the upper part is of the highest quality and the quality decrease downstreams. River Ižica was ranked from 2. to 5. RCE quality class. Diversity of macrophyte taxa is the highest in the middle part of the river Ižica. The frequency and abundance of the taxa are changing over the growth season, the highest at the peak of the growth season, in August. The highest abundance, especially in the lower part of the river Ižica, has filamentous algae and species Sagittaria sagittifolia and Potamogeton natans.

Keywords:macrophytes, wider environmental assessment, stream, the river Ižica

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