Ábrahám Levente: Biomonitoring a Dráva folyó magyarországi szakasza mentén 2000-2004 - Natura Somogyiensis 7. (Kaposvár, 2005)
Tóth, Sándor: Monitoring dragonflies on the section of the Drava between Őrtilos and Vízvár (Insecta: Odonata) - Szitakötők monitorozása a Dráva mente Őrtilos és Vízvár közötti szakaszán (Insecta: Odonata)
42 NATURA SOMOGYIENSIS Sampling site 5. Büdös-ér (Gyékényes) Sampling site 6. Méhes-tó (Gyékényes) Between 2002 and 2004 there were no collecting in two sampling sites due to they were unsuitable for monitoring. Sampling site 7. Holt-Dráva (Bélavár) The former bed of the Dráva to the south of Bélavár, in Lókai-mező in the flood-plain of the Dráva. Examined area: 50 x 3 m. Type of the water body: marshy natural still water (code number: 1610) Depiction of the sampling site based on the fauna: The number of species with proved detection in the water between 2000 and 2004: 35. In the course of the samplings, only the imagoes of a further 8 species were detected, however, presumably, their larvae also mostly developed in the water. Aeshna viridis is an exception: it can only be listed as belonging to the fauna of the Holt-Dráva when its larvae are also found there. Protected species: Agrion virgo, Anaciaeschna isosceles, Epitheca bimaculata, Gomphus vulgatissimus, Lestes dryas, Libellula fulva, Somatochlora aenea Strictly protected species: Leucorrhinia caudalis, Leucorrhinia pectoralis Number of individuals: 2971 Number of larvae: 513 Number of exuviums: 161 Number of imagoes: 2297 Zygoptera material: Ischnura elegáns (22,03%), Coenagrion puella (14,19%), Erythromma viridulum (14,00%), Coenagrion pulchellum (12,97%), Platycnemis pennipes (11,62%), Lestes virens (8,03%). Other species together (17,16%). Anisoptera material: Crocothemis servilia (29,26%), Orthetrum cancellatum (13,19%)), Cordulia aeneaturfosa (12,12%), Anaciaeschna isosceles (9,42%), Sympetrum sanguineum (8,53%), Leucorrhinia caudalis (7,63%), Brachytron pratense (7,27%o), Sympetrum vulgatum (6,82%). Other species together (6,75%). Sampling site 8. Csíkos-árok (Bélavár) Little north-south watercourse to the north of Bélavár, in a pasture called Csíkos outside the flood plain of the Dráva. As far as the type of the body of water is concerned, originally it could have been a brook but some parts of it have been canalised and its sampling section is an artificial small watercourse. It is a shallow, slow watercourse widening at some points and has a rich vegetation. Especially in summer it stagnates in several places or fully dries out. Examined area: 50 x 3 m. Type of the water body: artificial small watercourse (code number: 2340) Depiction of the sampling site based on the fauna: The number of species with proved detection in the water between 2000 and 2004: 20. In the course of the surveys, the imagoes of a further 14 species were detected. Presumably their larvae also develop in the small watercourse without exception. Protected species: Anaciaeschna isosceles, Coenagrion ornatum, Gomphus vulgatissimus, Libellula fulva, Orthetrum brunneum Strictly protected species: Number of individuals : 13 54 Number of larvae: 302 Number of exuviums: 66 Number of imagoes: 986
