Makrofitska vegetacija rijeke Odre i njenih pritoka

master's thesis

• Title (english): Macrophyte vegetation of the Odra River and its tributaries
• Author: Ivan Beno
• Mentor: Antun Alegro (mentor)
• Mentor: Anja Rimac (komentor)
• Committee member: Antun Alegro (predsjednik povjerenstva)
• Committee member: Mirela Sertić Perić (član povjerenstva)
• Committee member: Sven Jelaska (član povjerenstva)
• Committee member: Ivana Buj (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2024-02-26, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Rijeka Odra u potpunosti je ravničarska tekućica, s izvorom i ušćem u nizinama, koja protječe ruralnim i šumovitim predjelom Turopoljske mikroregije. Kao i većina rijeka Europe, i Odra je pod snažnim čovjekovim utjecajem od kojih su najznačajniji kanaliziranje i pad podzemnih voda. Makrofiti ovog područja rijetko su istraživani i ne postoje cjelokupna i sustavna istraživanja ove skupine. Stoga, kako bi se upotpunile spoznaje o makrofitskoj vegetaciji, ali i o čovjekovom utjecaju na ovo područje, provedena su istraživanja tijekom ljeta i jeseni 2022. i 2023. godine na 18 lokaliteta duž Odre i njezinih pritoka. Istraživanjem je utvrđeno kako porječje Odre karakterizira visoka raznolikost i bogatstvo makrofitskih svojti, njih 74 koje pripadaju u pet taksonomskih skupina, a najbrojnije među njima su sjemenjače. Zabilježene vrste horološki spadaju u skupine sa središtima rasprostranjenosti u umjerenom i cirkumpolarnom području. Analizom ekoloških indikatorskih vrijednosti i stanišnih podataka zabilježena je jasna razlika između pritoka i glavnog toka. Ocjenom ekološkog stanja vodotoka utvrđeno je u prosjeku umjereno ekološko stanje, dok se za bolja stanja uglavnom veže više bogatstvo vrsta i pješčani supstrat. Uz invazivne strane vrste, zabilježene su i razne antropogeno izazvane ugroze te relativno dobra ekološka stabilnost uz vodotoke i raznolika morfologija korita duž istraživanog područja.

Abstract (english)

The Odra River is entirely a lowland river with its source and confluence in lowland areas. It flows through the rural and forested areas of the Turopolje microregion. Like many rivers in Europe, the Odra has been significantly affected by human activity, like canalization and the lowering of groundwater levels. There have been few studies related to the macrophytes of this area, and no complete and systematic studies have been conducted. To expand knowledge about macrophyte vegetation and human impact in this area, a survey was conducted in the summer and autumn of 2022 and 2023 at 18 sites along the Odra and its tributaries. The survey revealed that the Odra basin is characterized by a high diverse and richness of macrophyte taxa, totaling 74, which are classified into five taxonomic groups, with spermatophytes being the predominant. The species recorded horologically belong to groups with centers of distribution in temperate and circumpolar regions. Analysis of ecological indicator values and habitat data revealed clear differences between the tributaries and the main stream. The assessment of habitat quality indicated a moderate ecological status, with better conditions associated with greater species richness and sandy substrates. Despite the presence of invasive alien species and various anthropogenic threats along the watercourses, the researched area is considered ecologically stable, with a diverse bed morphology.

• Keywords: ocjena kvalitete staništa; antropogeni utjecaji; Turopolje
• Keywords (english): assessment of habitat quality; human impact; Turopolje
• Language: croatian
• URN:NBN: urn:nbn:hr:217:211380
• Study programme: Title: Experimental Biology-University graduate programme; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra eksperimentalne biologije (sveučilišni/a magistar/magistra eksperimentalne biologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2026-02-26
• Created on: 2024-03-13 11:21:33