Naslov
Mayfly assemblages in lentic phase of karst intermittent rivers in the Mediterranean

Autori
Vilenica, Marina ; Rebrina, Fran ; Ružanović, Lea ; Rumišek, Mario ; Matoničkin Kepčija, Renata ; Brigić Andreja

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts. 4th Symposium on Freshwater Biology. Croatian Association of Freshwater Ecologists, Zagreb, Croatia. / Mičetić Stanković, Vlatka ; Ivković, Marija ; Matoničkin Kepčija, Renata ; Sertić Perić, Mirela ; Miliša, Marko ; Vilenica, Marina - Zagreb : Hrvatsko udruženje slatkovodnih ekologa (HUSEk), 2023, 30-30

Skup
4th Symposium on Freshwater Biology with the international participation

Mjesto i datum
Zagreb, Hrvatska, 21.04.2023

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Ephemeroptera ; temporary pools ; extreme environmental conditions ; rare species

Sažetak
Intermittent rivers are hydrologically extreme freshwater habitats which periodically dry out, and are characterized by interchange of lotic, lentic, and terrestrial phases. They are most common in semiarid regions of the world, where they represent an important water resource. Despite the increase in research interest in intermittent rivers, community ecology studies of such habitats are still rare, and most so far have focused on lotic habitats. Mayflies are often among the most abundant benthic invertebrates in freshwater ecosystems. Since mayflies show high sensitivity to degradation of their habitats, they are used in bio-monitoring programs worldwide. This study aimed to test mayfly habitat preferences during the lentic phase of karst intermittent rivers in the Mediterranean. Three karst intermittent rivers in Croatia (the Krčić, Čikola and Miljašić Jaruga rivers) were included in this study. A total of seven or eight pools were sampled from each river using a Surber sampler, and the physicochemical water properties were measured at each pool. Species richness was comparable among rivers (i.e. four or five species), while abundance was lower in the Miljašić Jaruga River compared to the other two rivers, most probably due to rather high water temperature in the pools of this river (mean value was 27.3°C), which was, together with conductivity, the main environmental variable shaping mayfly assemblages in the lentic phase of studied rivers. In such harsh habitats, i.e. relatively small temporary pools with warm water (mean temperature >19.7°C), even some species (Procloeon pennulatum and Nigrobaetis niger) considered rare in Croatian freshwater habitats were able to survive, indicating conservation value of habitats in the Mediterranean intermittent rivers.

Izvorni jezik
Engleski

POVEZANOST RADA