Emergence phenology and microhabitat distribution of aquatic Diptera community at the outlets of barrage lakes: effects of temperature, substrate and current velocity

• Autorzy: Čmrlec K. , Ivković M. , Šemnički P. , Mihaljević Z.
• Języki publikacji: EN

Abstrakty

EN

True flies (Diptera, Insecta) are one of the most important groups of aquatic insects in respect of the number of families and abundance of individuals. The goals of this study were to determine emergence patterns and the main ecological factors that influence dipteran family abundance and emergence at barrage lake outlets. Differences in abundance and variations between microhabitats were examined. The study was carried out in Plitvice Lakes National Park (Dinaric karst region, Croatia) at outlets of three barrage lakes. On each site several microhabitats, which differ in substrate and water velocity were selected. The selected substrates were moss on tufa, particulate tufa with detritus, pebbles and silt. Sampling of dipteran adults was conducted at the end of every month during 2007/2008 with 6 emergence traps placed at each site. Simuliidae and Chironomidae were the most abundant families among the 13 families present. Temperature influenced the start of emergence and the duration of flight period. All three lake outlets differed in abundance of individuals, especially the lowest barrage lake outlet which can be contributed to the lowest levels of organic seston and highest rates of tufa deposition. For Chironomidae, Simuliidae and aquatic Empididae statistically significant positive correlation between abundance and current velocity was observed. The least favoured substrate for all Diptera families was silt, while moss was the preferred one.

Słowa kluczowe

EN

phenology; current velocity; substrate; Simuliidae; Chironomidae

PL

fenologia; prędkość prądu; podłoże; meszkowate; ochotkowate

• Wydawca: Museum and Institute of Zoology, Polish Academy of Sciences
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2013
• Tom: Vol. 61, nr 1
• Strony: 135--144
• Opis fizyczny: Bibliogr. 45 poz., il.

Twórcy

autor

Čmrlec K.

• Lavoslava Ružičke 19, 43500 Daruvar, Croatia

autor

Ivković M.

• Department of Zoology, Division of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia

autor

Šemnički P.

• Radoboj 359a, 49232 Radoboj, Croatia

autor

Mihaljević Z.

• Department of Zoology, Division of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia

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