Naslov
Macroinvertebrate pioneers in rewetted, historically dry channels

Autori
Maruna, Martina ; Matoničkin Kepčija, Renata ; Miliša, Marko

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

Izvornik
3rd Central European Symposium for Aquatic Macroinvertebrates Research (CESAMIR) Book of abstracts / Rewicz, Tomasz ; Wysocka, Anna ; Bacela-Spychalska, Karolina ; Grabowski, Michal ; Hupalo, Kamil - , 2018, 48-48

Skup
3rd Central European Symposium for Aquatic Macroinvertebrate Research (CESAMIR)

Mjesto i datum
Łódź, Poljska, 08.07.2018. - 13.07.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
recolonization, tufa, intermittent flow, Chironomidae, Simuliidae, Coleoptera

Sažetak
We carried out a macroinvertebrate recolonization study in historically dry channels in the Krka National Park. The drying occurred through plant overgrowth. Invasive plant species Ailanthus altissima took over a part of the area with several streams at a tufa barrier causing the flow to change. Some of the active tufa-depositing habitats disappeared leading to changes in ecological features of the area. The revitalization and recolonization occurred after removal of the invasive trees. Streams revitalization contributes to the restoration of the balance in aquatic community, food chains and improves the circulation of organic matter, making a positive influence on biodiversity. Our goal was to determine the rate of recolonization for the macroinvertebrate taxa in the rewetted habitat that were completely dry until recently. We sampled the four non-concurrently rewetted sites to 3 cm depth monthly during the inital recolonization period. Simultaneously, we measured the physico-chemical properties of the water at each site. The most dominant recolonization i.e. pioneering taxa were non-biting midges and blackflies. They were among the most abundant taxa in the control site but their abundance was significantly higher in the revitalized channels. Beetles were the second most abundant taxon at the control site but also the taxa that recolonized the least. Judging by the number of taxa, the least favorable for the recolonization were the habitats at the most recenly rewetted channel. In addition, this was the channel that suffered the most severe loss of structure. Finally, most of the taxa at the control site were present at the revitalized channel 4 months after rewetting.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

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