Vladimír Bejček

Czech University of Life Sciences Prague, Faculty of Environmental Sciences

Obtaining temporal biodiversity trends in the light of rapid global change is crucial to estimating future impacts – yet the lack of temporally replicated monitoring data limits our ability. Here, we identify imprints of temporal change in static data and utilize them to predict temporal biodiversity trends without requiring a time-series. We used...

This poster is about the early results for our study currently available as preprint here (https://doi.org/10.22541/au.172978475.51624422/v1). At this initial stage of the project we were just exploring the direction of temporal change, while later versions included the separation into magnitude of temporal change and direction of temporal change w...

Temporal biodiversity change involves colonization, extinction, and recurrence of species. These processes vary with spatial grain (i.e. the area at which biodiversity is assessed), but there is little theory to explain this. Here, we present theoretical scenarios showing that colonization, extinction, and recurrence of species can either increase...

Worldwide environmental effects of anthropogenic land modification have made apparent the urgent need of ecological restoration. However, the methods employed in restoration of post-industrial sites vary across different regions. This study aims to examine the outcomes of different restoration approaches by examining avian communities inhabiting a...

Management of restored areas requires ecologically meaningful spatial data providing objective measures of restoration success. Understanding relationships between species diversity on the one hand and habitat heterogeneity and productivity on the other can help establish such measures and prioritize restoration management. We used airborne LiDAR a...

Atlas of birds breeding in the Czech Republic in the period 2014-2017, following the three previous atlases from 2001-2003, 1985-89 and 1973-77. This atlas contains also comparison with these previous mapping periods, and, newly, modelled maps of species distribution (probability of occurrence) on the 3 x 2.8 km scale.

Evaluating the species use of protected area networks is of considerable worldwide importance, especially as a feedback for policy-makers and the conservation community. Based on the data of an annual, citizen-science monitoring programme of long tradition (2004–2015), we test the hypothesis that the European Natura 2000 network protects high quali...

Species of the genus Echinococcus (Cestoda; Taeniidae) are minute tapeworms of carnivores. Their larvae are known as hydatids (metacestode), which proliferate asexually in various mammals. Like the majority of cestodes, Echinococcus spp. require two different host species to complete their life cycle. Definitive hosts harbouring the adult cestodes...

Long-term dynamics of small mammal communities are perennial themes in population ecology. However, comprehensive studies on the effect of environmental factors on population dynamics are still rare. Here, we aimed to analyze long-term data on Central European communities of small mammals occurring in two habitats that greatly differed in their str...

The subject of population cycles is regarded as controversial due to a number of unsettled questions such as whether or not cyclic patterns are governed by the same processes at high and low latitudes in Europe. Recent evidence suggests that the dynamics at high and low latitudes share the common temporal pattern of vole dynamics referred to as col...

Capsule Two nationwide monitoring schemes, the International Waterbird Census (IWC) and Atlas of Wintering Birds (AWB), provide comparable estimates of national population sizes of wintering waterbirds. Differences between these estimates for several species can be explained by differences in their migratory strategy. Aims We tested whether specie...

We analyzed sequences of two variable segments of the mitochondrial control region (CR) and flanking regions in the house mouse (Mus musculus). Most of the material was sampled from the eastern Mediterranean and the Middle East, i.e., a source area for the colonization of Europe. These sequences were supplemented with other samples from the whole r...

According to the newest data (2010), the state of the black grouse is in decline in the Czech Republic. One of the reasons for this decline is the parasitic infection. The examination of 170 faecal specimens disclosed 6 species of parasites. Helminth eggs were found in 50 % of the examined faecal specimens. The following eggs were found: cestode Hy...

Recent major environmental changes could lead to homogenization in the composition of plant and animal communities, with generalist species replacing more specialized species, as well as to the increased domination of species adapted to warmer climatic conditions. Using common bird monitoring data, we have tested whether these patterns can be obser...

The Black Grouse (Tetrao tetrix) ranks among bird species which have shown dramatic decline in Western and Central Europe in the last decades. Since it is able to occupy various types of habitats we examined its habitat preferences, home range size and survival rate in succession stages of forest growths. In the Krušné hory Mts. (western Bohemia, C...

Winter weather limits populations of resident bird species. Although many small-scale or speciesspecific studies illustrated this fact, our knowledge of interspecific differences in population responses to winter temperatures is incomplete due to lack of community-level studies. For this purpose, we have used long-term monitoring data on breeding b...

European birds have been significantly affected by dramatic environmental changes during the last decades. The effects of these changes on species richness and distribution in particular countries are still poorly understood because of a lack of high-quality, large-scale data standardized over time. This is especially true in Central and Eastern Eu...

A species’ susceptibility to environmental change might be predicted by its ecological and life-history traits. However, the effects of such traits on long-term bird population trends have not yet been assessed using a comprehensive set of explanatory variables. Moreover, the extent to which phylogeny affects patterns in the interspecific variabili...

Bioaccumulation of cadmium, chromium, copper, manganese, nickel, lead and zinc in small terrestrial rodents - voles and their cestode parasite Paranoplocephala dentata was studied. Contents of Pb, Mn, Ni and Zn in the parasite were found to be higher than in the kidney and liver of the parasitized animals. Lead level in the cestode was 37 fold high...

Bioaccumulation of cadmium, chromium, copper, manganese, nickel, lead, and zinc in 56 foxes (Vulpes vulpes) and their parasites Mesocestoides spp. (Cestoda) and Toxascaris leonina (Nematoda) was studied. The levels of heavy metals were determined in the livers and kidneys of the animals depending on parasitism in the following ranges: Pb, 0.029–3.5...

The aim of the present study was to assess whether there is a difference in accumulation of heavy metal ions (Cd, Cr, Cu, Mn, Ni, Pb and Zn) in hosts (small mammals) infected by cestode parasites when compared to those without cestode infection. The abundance of gastrointestinal parasites and bioaccumulation of heavy metals in host livers and kidne...

Vyd. 2.

Recent studies show differences in population trends between groups of species occupying different habitats. In Czech birds, as well as in many other European countries, populations of forest species have increased, whereas populations of farmland species have declined. The aim of our study was to test whether population trends of particular specie...

Numerous studies have shown that climate changes associated with increasing global temperature affect bird species. For instance, long-distance migrants are not able to respond adequately to rapid advances in spring phenology, and thus their populations decline due to lower breeding performance. Moreover, many species in the Northern Hemisphere hav...

The relationship between agricultural intensification and a decline in farmland bird populations is well documented in Europe, but the results are mostly based on data from the western part of the continent. In the former socialist eastern and central European countries, political changes around 1990 resulted in a steep decline in the intensity of...

An effect of the Czech nature conservation law on a conservation status of bird species was examined using data on population size from two Atlases of breeding bird distribution in the Czech Republic (1985-1989 and 2001-2003). On average, species with the highest level of legal protection did better than other species. This pattern was probably dri...

The species richness of free-living vertebrates was analysed using mapping of occurrence within individual grid squares (12 x 11.1 km) over the territory of the Czech republic. The data on species distribution were derived from recent distributional atlases published in the last 15 years, and the records originated mostly in the last 20 years. Alto...

Aims To determine population changes of forest birds in the Czech Republic and to determine their possible causes. Methods Population data were collected via the Breeding Bird Monitoring Programme, which is based on skilled volunteers counting birds at point transects using a standardized technique. Population trends and indices for the period 1982...

The study deals with changes of the helminthofauna in shrews (Sorex araneus, Linnaeus, 1766 and Sorex minutus, Linnaeus, 1766) in ecosystems of Krušné hory Mts. (NW Bohemia) affected by industrial immissions compared with ecosystem of Kaplice (S Bohemia) non-affected by industrial immissions. The pollution degree of environment by industrial immiss...

Population biology of shrews (Sorex araneus and S. minutus ) was studied in a mountain range in northern Bohemia (Czech Republic) heavily affected by aerial industrial pollution. In order to estimate the biological effects of pollution, we determined concentrations of heavy metals in soft tissues. Cadmium residues showed a slightly increased level,...

The alternative prey hypothesis suggests that generalist predators switch from their primary prey to secondary when the former is scarce. We tested this hypothesis during a two-year study combining data on predation of ground dummy nests and the numbers of small mammal populations in a highly fragmented landscape in the Krušné hory Mts, the Czech R...

Vyd. 1. Na obálce nad názvem: Česká zemědělská univerzita v Praze, Lesnická fakulta, katedra ekologie Na tit. s. vedle vročení: Praha

Vyd. 1 Bibliogr. s. 439-451

The checklist of birds of the Czech Republic includes all bird species found in the wild within the area of the Czech Republic between 1800-December 31st, 1994. The list includes 390 species, another 14 species are included in the category D (escapes). In total, 222 species have nested at least once within the area of the Czech Republic, 8 species...

The primary succession of bird communities was studied in 6 successional stages of spoil banks after surface brown coal mining in NW Bohemia, Czechoslovakia: the initial stage 2-3 yr after heaping, the stages 6 and 25 yr after heaping, the stages 6 and 25 yr after reforestation, and the stage of a full-grown oak forest at which the successional ser...

1. vyd Bibliogr. s. 259-264

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