Izvorni znanstveni članak
https://doi.org/10.1515/cjf-2016-0002
ZOOPLANKTON STRUCTURE IN TWO INTERCONNECTED PONDS: SIMILARITIES AND DIFFERENCES
Maria Špoljar
orcid.org/0000-0003-1006-8300
; Sveučilište u Zagrebu, Prirodoslovno-matematički fakultet, Zagreb, Hrvatska
Tea Tomljanović
orcid.org/0000-0002-5917-3315
; Sveučilište u Zagrebu, Agronomski fakltet, Zagreb, Hrvatska
Tvrtko Dražina
; Sveučilište u Zagrebu, Prirodoslovno-matematički fakultet, Zagreb, Hrvatska
Jasna Lajtner
; Sveučilište u Zagrebu, Prirodoslovno-matematički fakultet, Zagreb, Hrvatska
Helena Štulec
orcid.org/0000-0002-6906-0832
; Ministry of construction and physical planning, Directorate for construction and energy efficiency in the buildings sector, Zagreb, Croatia
Daniel Matulić
orcid.org/0000-0002-2724-8407
; Sveučilište u Zagrebu, Agronomski fakltet, Zagreb, Hrvatska
Jelena Fressl
; Dvokut ECRO Ltd., Zagreb, Croatia
Sažetak
The research of zooplankton diversity, abundance and trophic structure was conducted during the summer period in pelagial zone on the longitudinal profile of the Sutla River Backwater. Investigated site consists of two interconnected basins: transparent Upper Basin with submerged macrophytes and turbid Lower Basin without macrophytes in the littoral zone. In the Upper Basin, abundance and diversity of zooplankton in the pelagial was higher in comparison to the Lower Basin, with prevailing species of genus Keratella as microfilter-feeder, and genera of Polyartha and Trihocerca as macrofilterfeeder rotifers. On the contrary, in the Lower Basin, crustaceans dominated in abundance. Microfilter-feeder cladoceran (Bosmina longirostris) and larval and adult stages of macrofilter-feeder copepod (Macrocyclops albidus) prevailed in the Lower Basin. Fish predation pressure was more pronounced in the pelagial of the Upper Basin, indicated by low cladoceran abundance in the surface layer. Although the studied basins were interconnected, results indicate significant (Mann-Whitney U test, p < 0.05) differences in the zooplankton structure as a potential result of the macrophyte impact on environmental conditions and fish predation pressure.
Ključne riječi
Submerged macrophytes; Transparency; Turbidity; Predation; Fish
Hrčak ID:
154672
URI
Datum izdavanja:
21.3.2016.
Posjeta: 1.808 *