RAKOVI U EKOEKSPOZOMSKOJ EVALUACIJI EKOSUSTAVA POVEZANIH S PODZEMNIM VODAMA

doctoral thesis

• Title (english): CRUSTACEANS IN ECO-EXPOSOMAL EVALUATION OF GROUNDWATER CONNECTED ECOSYSTEMS
• Author: Zuzana Redžović
• Mentor: Marijana Erk (mentor)
• Mentor: Sanja Gottstein (komentor)
• Committee member: Maria Špoljar (predsjednik povjerenstva)
• Committee member: Vlatka Filipović Marijić (član povjerenstva)
• Committee member: Mario Cindrić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2023-11-17, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology
• Universal decimal classification (UDC): 57 - Biological sciences. Physical anthropology. Biodiversity

Abstract

Cilj ove doktorske disertacije bila je ekoekspozomska analiza fizioloških promjena u rakušca
Synurella ambulans kao posljedica utjecaja okolišnih stresora u ekosustavima povezanim s
podzemnim vodama. Analiza značajki životnog ciklusa ukazala je na prostorno-vremensku
varijabilnost parametara rasta te utjecaj okolišnih čimbenika, posebice temperature,
koncentracije otopljenog kisika i organske tvari u vodi. Vrsta može akumulirati metale iz
okoliša, čak i kada koncentracije metala u intersticijskoj vodi i sedimentima iz hiporeičke zone
nisu odstupale od standarda kvalitete okoliša. Povišene vrijednosti bioakumulacijskih faktora
metala, biomarkera antioksidativne obrane organizma i izloženosti ksenobioticima te niže
vrijednosti energijskog naboja adenilata i niži omjer PK/PEPCK u S. ambulans nizvodno od
ispusta otpadnih voda, u odnosu na uzvodnu lokaciju, ukazuju na negativan antropogeni utjecaj
i povećani anaerobni potencijal. Vrsta S. ambulans je prikladan bioindikator u procjeni stanja
okoliša u hiporeičkoj zoni, važnog za zaštitu ovog ranjivog ekotona esencijalnog za usluge
slatkovodnih ekosustava.

Abstract (english)

The objective of this thesis was an eco-exposome analysis of physiological changes in the amphipod Synurella ambulans as a response to environmental stressors in groundwater connected ecosystems. Life history trait analysis revealed spatio-temporal variation in growth parameters and the influence of environmental parameters, especially water temperature, concentrations of dissolved oxygen and organic matter. The species accumulated metals from the environment even when metal concentrations in interstitial water and sediments did not deviate from environmental quality standards. Increased bioaccumulation factors, biomarkers of antioxidant defense and exposure to xenobiotics, lower levels of adenylate energy charge and a lower PK/PEPCK ratio in S. ambulans downstream of the wastewater outlet compared to the upstream location, indicated a negative anthropogenic influence and increased anaerobic potential. S. ambulans is a suitable bioindicator for environmental assessment in the hyporheic zone, which is important for the protection of this vulnerable ecotone that is essential for freshwater ecosystem services.

• Keywords: Synurella ambulans; hiporeička zona; životni ciklus; okolišni stres; onečišćenje metalima; energijski metabolizam; biomarkeri
• Keywords (english): Synurella ambulans; hyporheic zone; life cycle; environmental stress; metal contamination; energy metabolism; biomarkers
• Language: croatian
• URN:NBN: urn:nbn:hr:217:045428
• Promotion: 2023
• Project: Number: IP-2014-09-4255; Title: Akumulacija, unutarstanično mapiranje i učinci metala u tragovima u akvatičkih organizama; Title: Accumulation, Subcellular Mapping and Effects of Trace Metals in Aquatic Organisms; Acronym: AQUAMAPMET; Leader: Marijana Erk; Jurisdiction: Croatia; Funder: HRZZ; Funding stream: IP
• Study programme: Title: Doctoral study; 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
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2025-11-17
• Created on: 2023-11-24 09:47:38