Naslov
Impact of water level fluctuation in shaping of plankton community

Autori
Dražina, Tvrtko ; Špoljar, Maria ; Pestić, Ana ; Matulić, Danijel ; Piria, Marina ; Biserka Primc

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

Izvornik
XIV. International Rotifer Symposium: Book of abstracts / Šorf, Michal ; Devetter, Miloslav - Česke Budejovice, 2015, 81-81

Skup
XIV. International Rotifer Symposium

Mjesto i datum
České Budějovice, Češka Republika, 30.08.2015. - 04.09.2015

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
shallow lakes; zooplankton; macrophytes

Sažetak
Shallow lakes are important water bodies in view of great biodiversity and landscape heterogeneity. These lakes are negatively affected by global climate changes, reflected in significant parameters of ecosystem deterioration, e. g. biodiversity decrease, macrophytes absence and water turbidity. During the 2012 and 2013 year we conducted zooplankton research in the Škrčev kut oxbow lake, (Krapina River watershed, NW Croatia, Europe) and set following goals: (i) to determine the effect of changes in hydrological regime and macrophyte coverage on the zooplankton structure and top down control ; (ii) to compare the abundance and diversity of zooplankton in a short-term scale. Within one year period water level increased for 2 meters. This caused significant reduction of floating-leaved macrophytes (i.e. Nuphar lutea), while turbidity, total phosphorus and chlorophyll a concentrations increased. Those, altered, ecological conditions were reflected in zooplankton community shift. Identified plankton assemblage suggested fish preference to cladocerans as main food source and enhanced notable increase of rotifer and copepod abundance. Prevalence on microfilter-feeder rotifers was evident during the both study period with the trend of their advancement. Our results indicate that, even on short-term scale, plankton community is directly influenced by modification of environmental conditions.

Izvorni jezik
Engleski

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