GEOKEMIJSKE ZNAČAJKE VODE I SEDIMENTA RIJEKE CETINE

doctoral thesis

• Title (english): GEOCHEMICAL CHARACTERISTICS OF WATER AND SEDIMENTS OF THE CETINA RIVER
• Author: Krešimir Maldini
• Mentor: Marina Mlakar (mentor)
• Committee member: Kristina Pikelj (predsjednik povjerenstva)
• Committee member: Neven Cukrov (član povjerenstva)
• Committee member: Vlado Cuculić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2024-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Interdisciplinary Natural Sciences; Marine Science
• Universal decimal classification (UDC): 55 - Geology. Meteorology. Hydrology

Abstract

Prekogranični sliv rijeke Cetine smješten je u području dinarskog krša te ga Republika Hrvatska dijeli s Republikom Bosnom i Hercegovinom. Rijeka Cetina predstavlja najdužu srednjodalmatinsku rijeku. Prikazani su rezultati analize uzoraka vode, prikupljeni u razdoblju od 5 godina, na ukupno 36 mjernih postaja, od toga: 26 mjernih postaja na rijeci Cetini, od čega 10 u estuariju te na 10 mjernih postaja pritoka rijeke Cetine. Prikazani su i rezultati analize uzoraka sedimenta, u ukupnoj i frakciji < 63 μm, s ukupno 36 mjernih postaja, od toga: 26 postaja na rijeci Cetini, uključujući i uzorke sedimenta iz akumulacijskih jezera Peruća i Đale, te 10 uzoraka iz estuarija rijeke Cetine. Koncentracije elemenata u uzorcima vode rijeke Cetine, uključujući i estuarij su u okviru dozvoljenih vrijednosti, dok koncentracije za ukupni dušik (TN) i ukupni fosfor (TP) prelaze dozvoljene vrijednosti na dvije mjerne postaje na pritocima rijeke Cetine. Sedimenti akumulacijskog jezera Peruća prirodno su obogaćeni elementima Al, Fe i Mn, odnosno njihovim oksidima, koji na sebe vežu ostale elemente što ukazuje na akumulaciju geogenog podrijetla, dok povećane koncentracije ukupnog dušika i fosfora te ukupnog organskog ugljika (TOC) u sedimentima akumulacijskog jezera Đale, ukazuju na antropogeni utjecaj grada Trilja i opterećenih pritoka. Potvrđeno je da sedimenti doprinose pročišćavanju vodotoka od elemenata u tragovima, ali i organskih tvari. Na sastav sedimenata estuarija rijeke Cetine, najveći utjecaj imaju geološka podloga okolnog područja, antropogeni utjecaj grada Omiša i gradske luke.

Abstract (english)

The cross-border basin of the Cetina River is located in the Dinaric karst area and is shared by the Republic of Croatia and the Republic of Bosnia and Herzegovina. The Cetina River is the longest Central Dalmatian river. The results of the analysis of water samples, collected over a period of 5 years, at 36 sampling stations in total: 26 stations on the Cetina River, of which 10 in the estuary and 10 measuring stations of the tributaries of the Cetina River, are presented. The results of the analysis of sediment samples, in the bulk and fraction < 63 μm, from 36 sampling stations in total: 26 on the Cetina River, including sediment samples from the Peruća and Đale accumulation lakes, and 10 samples from the Cetina River estuary are also presented. The concentrations of the elements in the water samples of the Cetina River, including the estuary, are below permitted values, while the values for total nitrogen (TN) and total phosphorus (TP) exceed permitted values at two measuring stations on the tributaries of the Cetina River. The sediments of the Peruća accumulation lake are naturally enriched with the elements Al, Fe, and Mn. Namely, their oxides bind other elements, indicating an of geogenic origin, while the increased concentrations of TN, TP and total organic carbon (TOC) in the accumulation sediments of the Đale accumulation lake indicate anthropogenic impact of the city of Trilj and loaded tributaries. It has been confirmed that sediments undoubtedly contribute to the purification of watercourses from trace elements, as well as organic matter. Sediment composition of the Cetina River estuary is most influenced by the geological base of the surrounding area, by the anthropogenic influence of the city of Omiš and its port.

• Keywords: elementi u tragovima; geokemijske karakteristike; estuarij; Rijeka Cetina
• Keywords (english): trace elements; geochemical characteristics; estuary; Cetina River
• Language: croatian
• URN:NBN: urn:nbn:hr:217:526144
• Promotion: 2025
• Study programme: Title: DOCTORAL STUDY OF OCEANOLOGY; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti u području prirodnih znanosti (doktor/doktorica znanosti u području prirodnih znanosti)
• Type of resource: Text
• Extent: 317 str. ; 30 cm
• File origin: Born digital
• Access conditions: Open access
• Created on: 2025-01-30 13:44:48