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Siltation disturbance in a mountain stream: aspect of functional composition of the benthic community

MARKO MILIŠA ; Department of Zoology, Division of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia
VESNA ŽIVKOVIĆ ; Department of Zoology, Division of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia
RENATA MATONIČKIN KEPČIJA ; Department of Zoology, Division of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia
IVAN HABDIJA ; Department of Zoology, Division of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia

Puni tekst: engleski, pdf (118 KB) str. 173-178 preuzimanja: 368* citiraj
APA 6th Edition
MILIŠA, M., ŽIVKOVIĆ, V., MATONIČKIN KEPČIJA, R. i HABDIJA, I. (2010). Siltation disturbance in a mountain stream: aspect of functional composition of the benthic community. Periodicum biologorum, 112 (2), 173-178. Preuzeto s https://hrcak.srce.hr/58144
MLA 8th Edition
MILIŠA, MARKO, et al. "Siltation disturbance in a mountain stream: aspect of functional composition of the benthic community." Periodicum biologorum, vol. 112, br. 2, 2010, str. 173-178. https://hrcak.srce.hr/58144. Citirano 15.11.2019.
Chicago 17th Edition
MILIŠA, MARKO, VESNA ŽIVKOVIĆ, RENATA MATONIČKIN KEPČIJA i IVAN HABDIJA. "Siltation disturbance in a mountain stream: aspect of functional composition of the benthic community." Periodicum biologorum 112, br. 2 (2010): 173-178. https://hrcak.srce.hr/58144
Harvard
MILIŠA, M., et al. (2010). 'Siltation disturbance in a mountain stream: aspect of functional composition of the benthic community', Periodicum biologorum, 112(2), str. 173-178. Preuzeto s: https://hrcak.srce.hr/58144 (Datum pristupa: 15.11.2019.)
Vancouver
MILIŠA M, ŽIVKOVIĆ V, MATONIČKIN KEPČIJA R, HABDIJA I. Siltation disturbance in a mountain stream: aspect of functional composition of the benthic community. Periodicum biologorum [Internet]. 2010 [pristupljeno 15.11.2019.];112(2):173-178. Dostupno na: https://hrcak.srce.hr/58144
IEEE
M. MILIŠA, V. ŽIVKOVIĆ, R. MATONIČKIN KEPČIJA i I. HABDIJA, "Siltation disturbance in a mountain stream: aspect of functional composition of the benthic community", Periodicum biologorum, vol.112, br. 2, str. 173-178, 2010. [Online]. Dostupno na: https://hrcak.srce.hr/58144. [Citirano: 15.11.2019.]

Sažetak
Background and Purpose: Siltation is a recognized stress for the benthic community. It may cause changes in the structure of habitat substrate and water physical and chemical properties. The aim of this study was to ascertain the effects of siltation on the function of a mountain stream benthic community, specifically in respect to availability of food resources.

Materials and Methods: The study was carried out at Bistra Stream on
theMedvednica Mountain in NWCroatia. Siltation was caused by quarrying. Samples were taken at a control (unsilted) site and three impact sites on four dates during the spring of 2006. Turbidity, water temperature, pH, oxygen content, conductivity and COD were measured and triplicate benthos samples were taken using a 30´30 cm Surber sampler on each sampling date. Impact of siltation on functional feeding guilds was analyzed.

Results and Conclusions: Turbidity, pH and temperature increased significantly downstream of the siltation source. Total number of individuals decreased by 85%, number of taxa by 60% and Shannon’s diversity index followed accordingly (by 56%). The grazers and the detritivores were proven to be most sensitive to the disturbance. The disturbance did not strongly affect shredders whereas predator abundance increased. We conclude that change in food availability is a crucial aspect of siltation disturbance and that allogenic siltation is more devastating because of the additional
chemical changes not noted during natural siltation.

Ključne riječi
fine sediment; stress; FFG; benthos; macroinvertebrates; quarrying; mining; Croatia

Hrčak ID: 58144

URI
https://hrcak.srce.hr/58144

Posjeta: 633 *