Emergence of the true flies (Diptera, Insecta) on tufa barriers in the Plitvice lakes national park

Čmrlec, Kristina (2011) Emergence of the true flies (Diptera, Insecta) on tufa barriers in the Plitvice lakes national park. Diploma thesis, Faculty of Science > Department of Biology.

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Abstract

True flies (Diptera, Insecta) are with number of families and abundance one of the most important group of aquatic insects. The goals of this study were to determine emergence patterns and main ecological factors that have influence on composition and abundance of specimens and emergence of families on tufa barriers in Plitvice lakes NP. Also correlations between abundance of predator families and amount of their prey were explored, as well as differences in abundance on longitudinal scale and on various microhabitats. Sampling was made monthly on 3 tufa barriers during 2007/2008 with 6 traps placed on each. During both years station Barijera Novakovića Brod had highest diversity and number of families. Sampling station Barijera Novakovića Brod had the highest total catch during 2007, and station Barijera Labudovac during 2008. Families Simuliidae and Chironomidae were the most abundant during the investigated period. Temperature had influence on start of emergence and duration of flight period. Variation in water flow influenced community composition. Families Empididae, Chironomidae and Simuliidae had statistical significant correlation between abundance and current velocity. Diptera families preferred all substrates except silt. Microhabitats with more prey had greater predator abundance.

Item Type: Thesis (Diploma thesis)
Keywords: Diptera, emergence, Plitvica lakes, tufa barriers, diversity, temperature, microhabitats
Supervisor: Mihaljević, Zlatko
Date: 2011
Number of Pages: 59
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Grozdana Sirotic
Date Deposited: 08 Jul 2014 07:54
Last Modified: 08 Jul 2014 07:54
URI: http://digre.pmf.unizg.hr/id/eprint/2466

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