Béla Tóthmérész

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Péter Török16
Tibor Magura13
Eric Garnier12
Edina Simon12
Teja Tscharntke10
16Tibor Magura
15Péter Török
12Edina Simon
10Roland Horváth
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Biodiversity differences between managed and unmanaged forests: meta-analysis of species richness in Europe.
Past and present pressures on forest resources have led to a drastic decrease in the surface area of unmanaged forests in Europe. Changes in forest structure, composition, and dynamics inevitably lead to changes in the biodiversity of forest-dwelling species. The possible biodiversity gains and losses due to forest management (i.e., anthropogenic pressures… (More)
Statistical aspects of environmental risk assessment of GM plants for effects on non-target organisms.
Previous European guidance for environmental risk assessment of genetically modified plants emphasized the concepts of statistical power but provided no explicit requirements for the provision of statistical power analyses. Similarly, whilst the need for good experimental designs was stressed, no minimum guidelines were set for replication or sample sizes.… (More)
The effects of ethylene glycol and ethanol on the body mass and elemental composition of insects collected with pitfall traps.
Insects often used as accumulation indicators of hazardous elements. Pitfall traps with ethylene glycol as trapping fluid are frequently used to collect insects. We studied the effect of glycol and preservation with ethanol on the elemental composition of hand collected firebugs. Control samples were stored in a freezer and the following treatments were… (More)
Functional groups of phytoplankton shaping diversity of shallow lake ecosystems
Phytoplankton of eutrophic shallow lakes are frequently dominated by one species or species of the same functional group, resulting in species-pure algal assemblages. Knowledge of the structure of these assemblages is essential to understand their functioning; therefore, species and functional diversity were investigated in five sub-types of eutrophic… (More)
Does disturbance enhance the competitive effect of the invasive Solidago canadensis on the performance of two native grasses?
The impact of invasive species on native plant communities can strongly depend on habitat disturbances. Thus, the joint study of invasion and disturbances are necessary to distinguish whether invasive species (1) are just ‘passengers’ of major environmental changes, (2) are the real cause (drivers) of native species decline, or (3) do disturbances and… (More)
Air pollution assessment based on elemental concentration of leaves tissue and foliage dust along an urbanization gradient in Vienna.
Foliage dust contains heavy metal that may have harmful effects on human health. The elemental contents of tree leaves and foliage dust are especially useful to assess air environmental pollution. We studied the elemental concentrations in foliage dust and leaves of Acer pseudoplatanus along an urbanization gradient in Vienna, Austria. Samples were… (More)
The PREDICTS database: a global database of how local terrestrial biodiversity responds to human impacts
Biodiversity continues to decline in the face of increasing anthropogenic pressures such as habitat destruction, exploitation, pollution and introduction of alien species. Existing global databases of species' threat status or population time series are dominated by charismatic species. The collation of datasets with broad taxonomic and biogeographic… (More)
Assessment of the effects of urbanization on trace elements of toe bones.
Amphibians, particularly frogs and toads, are increasingly used as bioindicators of contaminant accumulation in pollution studies. We developed an analytical technique to analyse their elemental contents based on a small amount of toe bone samples. This method is environment-friendly as, unlike traditional methods, it is not necessary to kill animals during… (More)
Functional phytoplankton distribution in hypertrophic systems across water body size
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)
Application of water framework directive in Hungary: development of biological classification systems.
The classification according to the Water Framework Directive (WFD) includes numerous challenges in contrast with the previously applied water qualification standards. The most important element of the ecological status, the biological one, is based on five groups of living organisms: phytoplankton, phytobenthon, macrophytes, macro-invertebrates and fish.… (More)