RASPODJELA IZOTOPA 13C U TLIMA I VODAMA SLIVA PLITVIČKIH JEZERA

master's thesis

• Title (english): DISTRIBUTION OF 13C ISOTOPE IN SOILS AND WATERS OF THE PLITVICE LAKES CATCHMENT
• Author: Martina Lugarić
• Mentor: Sanja Kapelj (mentor)
• Mentor: Hana Fajković (komentor)
• Committee member: Sanja Kapelj (predsjednik povjerenstva)
• Committee member: Igor Felja (član povjerenstva)
• Committee member: Karmen Fio Firi (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2024-09-23, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology

Abstract

Ugljik ima tri izotopa: 12C (98,89 %), 13C (1,11 %), i 14C (radioaktivni izotop s vrlo malim postotkom na Zemlji). Najveći spremnici ugljika uglavnom su marinski i kopneni sedimenti, brojni organski spojevi u ležišta ugljena, nafte i plina. Na području Plitvičkih jezera otopljeni anorganski ugljik nastaje otapanjem karbonatnih stijena i minerala. Vrijednosti δ13C koriste se za određivanje porijekla ugljena u stijenama, tlu i vodama, što omogućuje proučavanje prirodnih i antropogenih promjena u... More okolišu kao i promjena klime. Klimatske promjene utječu na vrijednosti δ13C zbog promjena temperature i količine organske materije u slivu i bioprodukcije u jezerskom sustavu. Geološku građu Plitvičkih jezera čine naslage trijasa, jure i krede. Gornjotrijaski i donjojurski dolomiti te laporoviti vapnenci sprječavaju vertikalnu cirkulaciju vode, stvarajući prirodne barijere. Nepropusni trijaski dolomiti ključni su za formiranje Gornjih jezera. Kvartarne naslage sedre prekrivaju mezozojsku vapnenačku podlogu od Kozjaka do Donjih jezera i njihovih pritoka poput rječica Plitvica. Istraživanja su pokazala posljedice klimatskih promjena na ekosustavu u Dinaridima i drugim područjima. Analiza stabilnih izotopa ugljika dala je relevantne podatke, ukazujući na porast biogenog ugljika u vodenim uzorcima, vjerojatno kao posljedica klimatskih promjena. Less

Abstract (english)

Carbon exists in three isotopic forms: 12C (98.89 %), 13C (1.11 %), and 14C(a radioactive isotope with a very small percentage on Earth). The largest carbon reservoirs are found in marine and terrestrial sediments, including organic compounds found in coal, oil, and gas deposits. In the Plitvice Lakes area, dissolved inorganic carbon results from the dissolution of carbonate rocks and minerals. The δ13C values are used to determine the origin of carbon in rocks, soils, and waters, allowing... More for the study of natural and anthropogenic environmental changes, as well as climate variations. Climatic changes influence δ13C values mainly due to temperature fluctuations and the amount of organic matter in the catchment area and lake system bioproduction. The geological structure of Plitvice Lakes consists of Triassic, Jurassic, and Cretaceous deposits. Upper Triassic and Lower Jurassic dolomites and marly limestones successfully prevent vertical water circulation, forming natural barriers. These impermeable Triassic dolomites are essential for the formation of the Upper Lakes. Quaternary tufa deposits cover the Mesozoic limestone base from Kozjak Lake to the Lower Lakes and their tributaries, such as the Plitvica River. Research has shown the effects of climate change on ecosystems in the Dinarides and other regions. Analysis of stable carbon isotope ratios has provided relevant data, indicating an increase in biogenic carbon in water samples, likely a result of climate change. Less

• Keywords: izotop 13C; stijena; tlo; voda Plitvičkih jezera; klima
• Keywords (english): isotope 13C; rocks; soils; water Plitvice Lakes; climate
• Language: croatian
• URN:NBN: urn:nbn:hr:217:080570
• Study programme: Title: Environmental Geology; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni magistar/magistra geologije (sveučilišni magistar/magistra geologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2025-01-31 08:54:33