Impact of water level fluctuation in the shaping of zooplankton assemblage in a shallow lake.
Shallow lakes are strongly affected by global climate changes reflected in significant parameters of ecosystem deterioration, i.e. biodiversity decrease, and water turbidity. Zooplankton research in Škrčev kut oxbow lake (Krapina River watershed, NW Croatia, Europe) was conducted during the summer o...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Sciendo
2018-03-01
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| Series: | Croatian Journal of Fisheries |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/cjf-2018-0003 |
| _version_ | 1818727982759411712 |
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| author | Špoljar Maria Dražina Tvrtko Lajtner Jasna Kovačević Goran Pestić Ana Matijašec Dora Tomljanović Tea |
| author_facet | Špoljar Maria Dražina Tvrtko Lajtner Jasna Kovačević Goran Pestić Ana Matijašec Dora Tomljanović Tea |
| author_sort | Špoljar Maria |
| collection | DOAJ |
| description | Shallow lakes are strongly affected by global climate changes reflected in significant parameters of ecosystem deterioration, i.e. biodiversity decrease, and water turbidity. Zooplankton research in Škrčev kut oxbow lake (Krapina River watershed, NW Croatia, Europe) was conducted during the summer of 2012 and 2013 with the aim to determine the effect of inter-annual, short-timescale changes of hydrological regime on environmental conditions, macrophytes, zooplankton and fish assemblage within an oxbow lake in the temperate region. Within one-year period the water level increased by 2 meters. This caused a significant reduction of floating-leaved macrophytes (i.e. Nuphar lutea), while turbidity, ortho-phosphate and chlorophyll a concentrations increased. These altered ecological conditions were reflected in the shift from floating-leaved macrophytes at the lower water level to phytoplankton-dominated lake at the higher water level. Zooplankton underwent significant alteration in assemblage. The results suggest that fish preference suppressed cladocerans and enhanced the rotifer and copepod abundance. Our results indicate that even in a short-timescale zooplankton assemblage mediates in the modification of ecosystem functioning. |
| first_indexed | 2024-12-17T22:22:45Z |
| format | Article |
| id | doaj.art-f311f6a0beec4c219c776796dcfde16f |
| institution | Directory Open Access Journal |
| issn | 1848-0586 |
| language | English |
| last_indexed | 2024-12-17T22:22:45Z |
| publishDate | 2018-03-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Croatian Journal of Fisheries |
| spelling | doaj.art-f311f6a0beec4c219c776796dcfde16f2022-12-21T21:30:25ZengSciendoCroatian Journal of Fisheries1848-05862018-03-01761273410.2478/cjf-2018-0003cjf-2018-0003Impact of water level fluctuation in the shaping of zooplankton assemblage in a shallow lake.Špoljar Maria0Dražina Tvrtko1Lajtner Jasna2Kovačević Goran3Pestić Ana4Matijašec Dora5Tomljanović Tea6Department of Biology, Division of Zoology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, HR-10 000Zagreb, CroatiaDepartment of Biology, Division of Zoology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, HR-10 000Zagreb, CroatiaDepartment of Biology, Division of Zoology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, HR-10 000Zagreb, CroatiaDepartment of Biology, Division of Zoology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, HR-10 000Zagreb, CroatiaDepartment of Biology, Division of Zoology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, HR-10 000Zagreb, CroatiaDepartment of General and Inorganic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 20, HR-10000Zagreb, CroatiaDepartment of Fisheries, Beekeeping, Game Management and Special Zoology, Faculty of Agriculture, University of Zagreb, Svetošimunska 25, HR-10 000Zagreb, CroatiaShallow lakes are strongly affected by global climate changes reflected in significant parameters of ecosystem deterioration, i.e. biodiversity decrease, and water turbidity. Zooplankton research in Škrčev kut oxbow lake (Krapina River watershed, NW Croatia, Europe) was conducted during the summer of 2012 and 2013 with the aim to determine the effect of inter-annual, short-timescale changes of hydrological regime on environmental conditions, macrophytes, zooplankton and fish assemblage within an oxbow lake in the temperate region. Within one-year period the water level increased by 2 meters. This caused a significant reduction of floating-leaved macrophytes (i.e. Nuphar lutea), while turbidity, ortho-phosphate and chlorophyll a concentrations increased. These altered ecological conditions were reflected in the shift from floating-leaved macrophytes at the lower water level to phytoplankton-dominated lake at the higher water level. Zooplankton underwent significant alteration in assemblage. The results suggest that fish preference suppressed cladocerans and enhanced the rotifer and copepod abundance. Our results indicate that even in a short-timescale zooplankton assemblage mediates in the modification of ecosystem functioning.https://doi.org/10.2478/cjf-2018-0003rotiferacladoceracopepodafishfloating-leaved macrophytesoxbow lake |
| spellingShingle | Špoljar Maria Dražina Tvrtko Lajtner Jasna Kovačević Goran Pestić Ana Matijašec Dora Tomljanović Tea Impact of water level fluctuation in the shaping of zooplankton assemblage in a shallow lake. Croatian Journal of Fisheries rotifera cladocera copepoda fish floating-leaved macrophytes oxbow lake |
| title | Impact of water level fluctuation in the shaping of zooplankton assemblage in a shallow lake. |
| title_full | Impact of water level fluctuation in the shaping of zooplankton assemblage in a shallow lake. |
| title_fullStr | Impact of water level fluctuation in the shaping of zooplankton assemblage in a shallow lake. |
| title_full_unstemmed | Impact of water level fluctuation in the shaping of zooplankton assemblage in a shallow lake. |
| title_short | Impact of water level fluctuation in the shaping of zooplankton assemblage in a shallow lake. |
| title_sort | impact of water level fluctuation in the shaping of zooplankton assemblage in a shallow lake |
| topic | rotifera cladocera copepoda fish floating-leaved macrophytes oxbow lake |
| url | https://doi.org/10.2478/cjf-2018-0003 |
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