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Macroinvertebrate diversity of a drainage ditch exposed to different anthropogenic pressures (CROSBI ID 670331)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Vlaičević, Barbara ; Čerba, Dubravka ; Turković Čakalić, Ivana ; Koh, Miran ; Ergović, Viktorija ; Peršić, Vesna Macroinvertebrate diversity of a drainage ditch exposed to different anthropogenic pressures // Book of abstracts. 3rd Central European Symposium for Aquatic Macroinvertebrate Research. / Rewicz, T. ; Wysocka, A. ; Bącela-Spychalska, K. et al. (ur.). Łódź: Drukarnia Cyfrowa i Wydawnictwo "Piktor" S.C., 2018. str. 156-156

Podaci o odgovornosti

Vlaičević, Barbara ; Čerba, Dubravka ; Turković Čakalić, Ivana ; Koh, Miran ; Ergović, Viktorija ; Peršić, Vesna

engleski

Macroinvertebrate diversity of a drainage ditch exposed to different anthropogenic pressures

Drainage ditches are waterbodies characteristic for many lowland agricultural areas, where they remove excess water, thus reducing the flood risk, but can also be used for irrigation. These habitats support highly diverse, although still poorly investigated, biological communities, including benthic macroinvertebrates. Due to high anthropogenic pressure, e.g. nutrient enrichment or pesticide contamination, many drainage ditches are ecologically degraded, resulting in the changes in benthic communities. In this research, carried out in June 2015, we analysed macrozoobenthos using a multi-habitat sampling method at eight sampling sites along a lowland drainage channel in northeast Croatia. Sampled microhabitats included mineral (macrolithal, mesolithal, microlithal, psammal and argyllal) and organic substrates (phytal) which covered more than 5% of the sampling area. Water physicochemical parameters were measured in situ and samples of both, sediment and water, were collected for the laboratory analysis of nutrients, organic matter, heavy metals and bacterial pollution. In total, 22 macroinvertebrate taxonomic groups were recorded belonging to Hydroida, Turbellaria, Bivalvia, Gastropoda, Hirudinomorpha, Oligochaeta, Hydrachnidia, Araneae, Isopoda, Amphipoda, Mysida, Collembola, Chironomidae, Diptera (excluding Chironomidae), Coleoptera, Ephemeroptera, Heteroptera, Megaloptera, Odonata and Trichoptera. The most abundant representatives were Chironomidae (73% of total abundance) and Oligochaeta (9% of total abundance), indicating poor water quality and organic enrichment at several sampling locations. Grouping of the sampling sites in the non-metric multidimensional scaling analysis suggests differences of benthos diversity and abundance, reflecting the ecological state at research sites. At the anthropogenically most disturbed sites, characterised by higher concentrations of heavy metals and organic carbon in the sediment and a higher number of faecal coliforms in water, the highest abundance of Chironomidae and Oligochaeta was found. These sites were characterised by the chironomid larvae whose bodies were intensively red coloured, what is characteristic of deficient oxygen concentrations. Also, the colour, texture and smell of the sediment indicated the organic pollution. At sites with more developed macrophyte stands, a higher macroinvertebrate diversity and a higher abundance of taxa were recorded, showing better ecological state and water quality. Our results indicate the possible existence of the point source of pollution in this area, leading to an excessive input of the organic and inorganic substances in the local drainage channels. Therefore, the utilisation of this water for irrigation or similar purposes would not be recommended.

Macrozoobenthos ; biodiversity ; multi-habitat sampling ; drainage channel ; water quality

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Podaci o prilogu

156-156.

2018.

objavljeno

Podaci o matičnoj publikaciji

Book of abstracts. 3rd Central European Symposium for Aquatic Macroinvertebrate Research.

Rewicz, T. ; Wysocka, A. ; Bącela-Spychalska, K. ; Grabowski, M. ; Hupało, K.

Łódź: Drukarnia Cyfrowa i Wydawnictwo "Piktor" S.C.

Podaci o skupu

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

poster

08.07.2018-13.07.2018

Łódź, Poljska

Povezanost rada

Biologija