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)
TÓTH S.: MONITORING DRAGONFLIES 41 the water. Sympetrum sanguineum - whose individuals found in the sampling site must have been roaming specimens - comes second (19.06%) in the quantitative composition of the species. Sampling site 3. Patacsini-grav el-pit lake (Muraker esztúr) Abandoned gravel-pit south-east from Őrtilos railway station, in the flood plain of the Dráva. Examined area: 150 m 2 . Type of the water body: marshy artificial still water (code number: 1620) Depiction of the sampling site based on the fauna: The number of species with proved detection in the water between 2000 and 2004: 33. In the course of the samplings, only the imagoes of a further 8 species were detected, however, presumably the larvae of these also mostly developed there. The protected Orthetrum brunneum and Somatochlora aenea also belong to these. Protected species: Anaciaeschna isosceles, Epitheca bimaculata, Lestes dryas, Leucorrhinia pectoralis, Libellula fulva Strictly protected species: Leucorrhinia caudalis Number of individuals: 3025 Number of larvae: 635 Number of exuviums: 149 Number of imagoes: 1241 Zygoptera material: Ischnura elegáns (32,83%), Coenagrion puella (21,41%), Erythromma viridulum (16,53%), Lestes virens (8,41%), Erythromma najas (6,23%). Other species together (14,59%). Anisoptera material: Crocothemis servilia (18,59%), Orthetrum cancellatum (12,34%), Cordulia aeneaturfosa (9,27%), Leucorrhinia caudalis (8,62%), Sympetrum sanguineum (8,50%), Sympetrum vulgatum (8,38%), Anax imperátor (6,14%), Anaciaeschna isosceles (4,95%). Other species together (23,21%). Sampling site 4. Dombó-canal (Gyékényes) A 50 metre section of the canal on the north-western edge of Lankóci forest 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: 12. In the course of the surveys, only the imagoes of a further 16 species were detected, but the occurrence of some of these {Agrion virgo, Coenagrion puella, Brachytron pratense, Sympetrum flaveolum, Sympetrum vulgatum) in larva stage cannot be ruled out either. In droughty periods Dombó-csatorna (Dombó Canal) is almost like still water in some places, which has a favourable effect on the development of several species. Protected species: Coenagrion ornatum, Anaciaeschna isosceles, Gomphus vulgatissimus, Libellula fulva, Orthetrum brunneum Strictly protected species: Ophiogomphus cecilia Number of individuals: 2343 Number of larvae: 271 Number of exuviums : 13 6 Number of imagoes: 1936 Zygoptera material: Platycnemis pennipes (30,39%), Coenagrion ornatum (28,72%»), Agrion splendens (26,73%), Ischnura elegáns (10,81%). Other species together (3,35%) Anisoptera material: Orthetrum brunneum (44,42%), Sympetrum sanguineum (13,84%), Libellula depressa (13,23%), Gomphus vulgatissimus (5,37%). Other species together (23,14%).
