Judit Görgényi

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The question of how species richness depends on the area is one of the most intensively studied subjects in biogeography. Many studies have reported this pattern for terrestrial and macroscopic taxa; however, microscopic and aquatic communities have received much less attention in the literature. The aim of our study was to reveal the relationship between(More)
Planktivorous silver carp and bighead carp (collectively, the bigheaded carps) have been stocked worldwide and their invasion has caused severe impacts on many freshwater ecosystems. Exploiting the chance provided by the specific hybrid bigheaded carp stock in Lake Balaton (Hungary) covering the entire morphological range between the two species (including(More)
Distribution of algae was studied in a series of water bodies ranging from 10−2 to ~109 m2 in the lowland region of the Carpathian basin in a late summer period. It has been demonstrated that lake size has pronounced impact on the morphological and chemical properties of the water bodies, and acting through these variables it shapes the distribution of the(More)
The gut contents of filter-feeding fish often contain considerable amounts of viable phytoplankton cells; thus, these animals can act as vectors in the horizontal and vertical transport of algae. In this study, the potential role of the introduced filter-feeding Asian carps (hybrids of silver carp Hypophthalmichthys molitrix and bighead carp H. nobilis) in(More)
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