Vodeni beskralježnjaci u mikrostaništima povremenog krškog izvora Mrđenovac

master's thesis

• Title (english): Aquatic invertebates in microhabitats of the intermittent karst spring Mrđenovac
• Author: Jure Krpina
• Mentor: Sanja Gottstein (mentor)
• Committee member: Sanja Gottstein (predsjednik povjerenstva)
• Committee member: Sandra Radić Brkanac (član povjerenstva)
• Committee member: Danijel Orešić (član povjerenstva)
• Committee member: Karmen Fio Firi (član povjerenstva)
• Committee member: Nenad Buzjak (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2022-10-25, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Povremeni krški izvori su među najkompleksnijim ranjivim ekosustavima svijeta. Razumijevanje
mikrostanišne ekologije vodenih beskralješnjaka povremenih krških vodotoka još uvijek je s mnogobrojnim
podatkovnim prazninama. Terenska istraživanja izvora Mrđenovac u porječju Like provedena su od siječnja
2014. do prosinca 2016. god. Tijekom terenskih istraživanja provedena su in situ mjerenja osnovnih
fizikalno-kemijskih parametara vode te uzorkovanje faune vodenih beskralješljaka dinamikom koja
obuhvaća protokol od minimalno četiri sezonska uzorka godišnje. Prikupljanje i analiza strukture i gustoće
zajednica vodenih beskralješnjaka provedeno je prema modificiranom AQEM protokolu s odvojenim
konzerviranjem uzoraka vodenih beskralješnjaka s različitih mikrostaništa. Ukupna raznolikost svojti
vodenih beskralješnjaka bila je najveća na mikrostaništima s vodenom vegetacijom. Utvrdili smo velike
sezonske razlike u zastupljenosti stalnih i povremenih vodenih svojti na organskom i anorganskom tipu
mikrostaništa. Novi nalazi faune, procjene bogatstva i raznolikosti zajednica esencijalni su nam za buduću
ekološku valorizaciju šireg područja porječja rijeke Like. Rezultati su pokazali kako je poznavanje strukture
i dinamike zajednica vodenih beskralješnjaka u povremenim krškim izvorima, vodenim ekosustavima s
ekstremnim sezonskim hidrološkim oscilacijama, ključno za definiranje ekološke održivosti i predviđanja
dugoročnih hidroloških promjena kao posljedica klimatskih promjena.

Abstract (english)

Intermittent karst springs (IKS) are among the most vulnerable ecosystems in the world. Understanding the
microhabitat ecology of aquatic invertebrates in IKS still has numerous data gaps. Field research of the
Mrđenovac stream source, situated in the Lika River basin, were conducted from January 2014 to December
2016. During the field research, in situ measurements of the basic physico-chemical parameters of water
were carried out, as well as a sampling of aquatic invertebrates that includes a minimum of four seasonal
sampling protocol per year. The collecting and analysis of structures and density of aquatic
macroinvertebrate assemblages were carried out according to the modified AQEM protocol by the separate
conservation of aquatic invertebrate samples from different microhabitats. The total biodiversity was
highest on the microhabitats with aquatic vegetation. We detected high seasonal differences in the
frequency of aquatic and semi-aquatic taxa on organic and inorganic type of microhabitats. The
records of new fauna, species richness and diversity were essential for the further ecological
assessment of the Lika River basin. The results showed that the knowledge of the structure and
dynamics of aquatic invertebrate assemblages in IKS, aquatic ecosystems with extreme seasonal
hydrological oscillations, essential for defining ecological sustainability and predicting long-term
hydrological changes as consequences of climate changes.

• Keywords: organski supstrat; anorganski supstrat; sezonalnost; raznolikost; zajednice beskralješnjaka; protok
• Keywords (english): organic substrate; inorganic substrate; seasonality; diversity; invertebrate assemblages; flow rate
• Language: croatian
• URN:NBN: urn:nbn:hr:217:949871
• Study programme: Title: Enviromental Sciences; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra struke znanosti o okolišu (magistar/magistra struke znanosti o okolišu)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access; Embargo expiration date: 2024-10-25
• Created on: 2022-11-03 13:04:33