Struktura zajednica tulara (Trichoptera, Insecta) krških slatkovodnih staništa nacionalnog parka Plitvička jezera

master's thesis

• Title (english): Community structure of caddisflies (Trichoptera, Insecta) in freshwater karst habitats in the Plitvice lakes National park
• Author: Paula Dvorski
• Mentor: Zlatko Mihaljević (mentor)
• Committee member: Zlatko Mihaljević (predsjednik povjerenstva)
• Committee member: Renata Šoštarić (član povjerenstva)
• Committee member: Mirjana Pavlica (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2012-02-16, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Sastav i strukturu zajednica tulara (Trichoptera, Insecta) na pojedinom staništu uvjetuje niz ekoloških čimbenika. Plitvička jezera pogodna su za istraživanje ekologije tulara jer obiluju različitim slatkovodnim staništima. Ciljevi ovog istraživanja bili su utvrditi i usporediti faunistički sastav i strukturu zajednice, tj. emergencijske značajke i trofičku strukturu tulara na dva, po ekološkim obilježjima, različita krška staništa s posebnim osvrtom na prisutna mikrostaništa. U trogodišnjem istraživanju (2008.-2010. god.) pomoću emergencijskih klopki sakupljane su odrasle jedinke tulara na dva različita staništa (izvor i sedrena barijera). Prikupljene su ukupno 7842 jedinke te je zabilježeno 48 vrsta tulara. Na izvoru Bijele rijeke kroz istraživano razdoblje sakupljen je veći broj jedinki, ali je zabilježen manji broj vrsta i manja raznolikost nego na barijeri Labudovac. Samo je pet svojti zajedničko za obje postaje. Vrhunac emergencije na istraživanim staništima zabilježen u lipnju kroz sve tri godine. Trofička struktura zajednice se razlikuje na istraživanim postajama. Na izvoru je dominirala funkcionalna skupina 'strugači–usitnjivači', a na barijeri 'procjeđivači–predatori–strugači'. Šljunak i makrovegetaciju kao mikrostanište preferirale su vrste na izvoru, a mahovinu na barijeri što je u skladu sa načinom prehrane dominantnih vrsta na pojedinom staništu.

Abstract (english)

Composition and structure of caddisfly (Trichoptera, Insecta) communities are determined by many ecological parameters typical for specific habitats. Plitvice Lakes NP was chosen for studying ecology of caddisflies due to high variety of aquatic habitats. The main goals of this study were to define and compare faunistics, community structure, i.e. emergence patterns and trophic structure of caddisflies at two ecologically different karst habitats, with special emphasis on microhabitats. Adult caddisflies were collected over a three-year period (2008-2010) using emergence traps at two different habitats (tufa barrier and spring). A total of 7842 individuals and 48 species were collected. Larger number of specimens but lower species richness and diversity were recorded for the Bijela rijeka spring during all three years of the study. Only five taxa were common to both study sites. Over three years, emergence peaks were recorded in June for both study sites. At the spring, trichopteran community was dominated by ‘scrapers-shredders', and at tufa barrier by ‘collector filterers- predators-scrapers’. In accordance with feeding preferences of most abundant species at particular site, caddisflies preferred gravel and macrovegetation and moss, at the spring and tufa barrier, respectively.

• Keywords: faunistički sastav; emergencijske značajke; trofička struktura; raznolikost; mikrostaništa
• Keywords (english): faunistics; emergence patterns; trophic structure; diversity; microhabitats
• Language: croatian
• URN:NBN: urn:nbn:hr:217:000837
• Study programme: Title: Ecology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra ekologije i zaštite prirode (magistar/magistra ekologije i zaštite prirode)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-04-28 12:57:10