prvi kongres hrvatskih znanstvenika iz domovine i inozemstva - HATZ

PRVI KONGRES HRVATSKIH ZNANSTVENIKA IZ DOMOVINE I INOZEMSTVAZagreb - Vukovar, 15. - 19. studenog 2004.P - 16DRAGONFLY FAUNA (Odonata) OF THE BARANJASURROUNDINGS (Croatia)Bogdanović T., Durbešić P., Mikuška J.Faculty of Philosophy, University of Osijek, CroatiaDuring the period from 1997 - 2003, the first systematic investigations of dragonflies ofthe Baranja surroundings were carried out at 30 locations. The following methods wereused: the method of collecting by entomological nets, the method of strolling andobserving and the method of taking photographs. Mapping and digital analyses of thedata were done by GIS tehnology, and the ArcView 3,0 program was used. Thesimilarities of fauna were established according to the method of SØRENSEN (1948). Onthe basis of the 2893 collected individuals at different stages of life (larvae - exuvia andadult individuals), a total of 48 species, 22 genuses, 8 families i 2 suborders of the orderOdonata were established. Out of this number, 5 species are newly registered in thefauna of that area: Coenagrion ornatum, Hemianax ephippiger, Libellula fulva, Orthetrumcoerulescens, and Sympetrum flaveolum. The greatest abundance in qualitative structure(frequency of encounter) was found in the species: Aeshna mixta, Coenagrion puella,Ischnura elegans, Orthetrum albistylum, Sympetrum striolatum, and the smallest in thespecies: Lestes macrostigma, Sympetrum danae, Sympetrum depressiusculum iSympetrum fonscolombei. The established qualitative structure of the dragonflies of thethe Baranja area represents 66,66% of the total number of species in Croatia whichproves that the investigated area is significant for the protection of the biodiversity of thedragonfly fauna.Presented on:Internat. Assoc. Danube Res. Limnological Reports 35 th Conference,Novi Sad, Serbia and Montenegro, 2004Principal Investigator : Dr.sc. Jozsef MikuškaProject No. 012200618