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1. Alien macrophyte species Elodea nuttallii appeared in Drava River in 2007.
2. Higher temperatures in January and March trigger the invasive behaviour of E. nuttallii.
3. Deposition of silt in the impoundments and warmer years could contribute to the huge expansion of E. nuttallii in the Drava River.
We develop an empirical model addressing interactive maternal and environmental effects on offspring size (OS) in Daphnia magna. OS significantly varied with multiple factors. Models addressing ecological questions regarding Daphnia populations should consider this natural variability in OS.
This paper presents the first list of the Greek Chironomidae. Six genera and 12 species are new to Greece. Chironomidae assemblages clustered into three ecoregions, with distinct climatic, geological and hydrochemical features.
Two Asian clam populations were compared and differed in flotation behaviour assisted by a mucous drogue line. Genetic variability and seasonality were assumed to explain the inconsistencies. Populations do not seem genetically distinct, thus mucous production is possibly influenced by microevolutionary events, not being a necessary condition for clam reproduction to occur.
This study reveals for the first time an interaction between toxic strains of Planktothrix agardhii and communities of Trachelomonas taxa (Euglenophyta) in an eutrophic shallow reservoir during bloom formation by toxic P. agardhii. We summarize taxonomical and ecological data for 23 Trachelomonas taxa including 3 new taxa for Poland, and 1 variety new to science.
The soda dominated subsaline astatic sodic pans are a unique type of continental saline waters, with limited number of geographical occurrence all around the World. This is the first comprehensive study targeting ionic composition (8 main ions) of natural astatic soda pans in the Carpathian Basin at the western border of their Eurasian range.
The impact of fish and cyclopoid copepod predation on zooplankton communities was evaluated using large-volume mesocosms. The overall strong effect of fish over cyclopoid predation suggests the main role of fish predation in the forming of zooplankton communities and in turn impacting phytoplankton biomass in mesocosms.
A new genus and species of aquatic midges, Metapelopia corbi, is established for species of Pentaneurini from the southeast Brazil. It represents the first genus and species described in the Thienemannimyia group from the Neotropical Region.
