A5016061782- Ecology and Vegetation Dynamics Studies
- Species Distribution and Climate Change
- Wildlife Ecology and Conservation
- Plant and animal studies
- Avian ecology and behavior
- Evolution and Paleontology Studies
- Animal Behavior and Reproduction
- Animal Vocal Communication and Behavior
- Ecosystem dynamics and resilience
- Plant Parasitism and Resistance
- Mediterranean and Iberian flora and fauna
- Botany and Plant Ecology Studies
- Neurobiology and Insect Physiology Research
- Insect and Arachnid Ecology and Behavior
- Animal Ecology and Behavior Studies
Charles University
2011-2024
Czech Academy of Sciences
2018-2024
Abstract Aim Despite several recent efforts to map plant traits and identify their climatic drivers, there are still major gaps. Global trait patterns for functional groups, in particular, the differences between woody herbaceous plants, have yet be identified. Here, we take advantage of big data compile species occurrence analyse spatial assemblage means variances key traits. We tested whether these drivers similar plants. Location New World (North South America). Methods Using largest...
We are living in a time of rapid environmental changes caused by anthropogenic pressures. Besides direct human exploitation plant and animal populations habitat transformation, biodiversity the Anthropocene affected less trivial processes including spreading non‐native species, emergence novel communities modifications ecosystem functioning due to changing nutrient cycles climate changes. These so complex that confident predictions effective conservation cannot be obtained without suitable...
Temperature and productivity appear as universal positive large‐scale correlates of species richness. However, the strength shape species–temperature (STR) species–productivity (SPR) relationships vary widely, causes this variation are poorly known. We analysed 1) published richness data for multiple taxa sampled in various regions 2) different clades within vertebrate classes globally, to test effects spatial scale characteristics examined on direction STRs SPRs. There striking differences...
Abstract Range size is a universal characteristic of every biological species, and often assumed to affect diversification rate. There are strong theoretical arguments that large-ranged species should have higher rates diversification. On the other hand, observation small-ranged phylogenetically clustered might indicate high species. This discrepancy between theory data may be caused by fact typical methods analysis do not account for range changes during speciation. Here we use cladogenetic...
The Living Planet Index (LPI) measures the average change in population size of vertebrate species over recent decades and has been repeatedly used to assess changing state nature. LPI indicates that populations have decreased by almost 70% last 50 years. This is striking contrast with current studies based on same time series data show increasing decreasing are balanced average. Here, we examine methodological pipeline calculating search for source this discrepancy. We find calculation...
Abstract Aim To separate the effect of overall resource level from seasonality on avian clutch size to test A shmole's hypothesis that birds have larger sizes in seasonal environments due high per capita food availability during breeding season. Location S outh frica and L esotho. Methods We used a large‐scale environmental gradient effects maximum (estimated by normalized difference vegetation index) variation among local passerine assemblages (25 km × 25 grid cells). The importance was...
Abstract Aim To evaluate the role of seasonal and non‐seasonal productivity fluctuations in global patterns species richness. Location Worldwide. Time period 2000–2017. Major taxa studied Amphibians, birds, mammals. Methods We analysed time series monthly variation Normalized Difference Vegetation Index (NDVI), a surrogate primary productivity, within c . 100 km × cells across all continents, estimating mean, periodic aperiodic unpredictable NDVI these cells. then explored relationships...
Abstract The trophic interactions between plants, insect herbivores and their predators are complex prone to cascades. Theory predicts that increase plant biomass by feeding on herbivores. However, it remains unclear whether different types of regulate the same degree, how intraguild predation impacts these interactions. Specifically, we lack a more comprehensive look at effects various groups global scale. Here report meta-analysis 486 experiments gathered from 157 publications reporting...
Abstract Geographic variation in avian clutch size is thought to be related the nest predation rate and food availability. We studied on artificial ground nests along a large-scale geographic gradient South Africa characterised by increasing productivity from deserts west humid savannas east, calculated mean sizes of birds occurring atlas quadrates surrounding our study sites. Clutch generally increased with seasonality. The least productive desert site was also highest rate, whereas all...
Aerial displaying is a flamboyant part of the sexual behaviour several volant animal groups, including birds. Nevertheless, little attention has been focused on identifying correlates large-scale diversity in this trait. In study, we scored presence and absence aerial displays males 1732 species passerine birds (Passeriformes) employed Bayesian phylogenetically informed mixed models to test for associations between set life-history environmental predictors. Our multi-variate revealed that...
Abstract Recently, there has been an increased effort to unravel selective factors behind female song evolution in songbirds. Female birds which produce songs may sing either solo or duets; although the 2 vocal performances likely evolved through different selection forces and mechanisms, majority of large-scale studies date have focused only on duetting general (pooling into a single category). Hence, here we estimate effect behavioral life-history traits (territoriality, social bonds,...
Environmental productivity, i.e., the amount of biomass produced by primary producers, belongs among key factors for biodiversity patterns. Although relationship diversity to environmental productivity differs studied taxa, detailed data are largely missing most groups, including insects. Here, we present a study moth patterns at local and regional scales along continent-wide gradient in southern African savannah ecosystems. We sampled moths (Lepidoptera: Heterocera) 120 plots normalized...
Abstract The Living Planet Index (LPI) measures the overall population trend of vertebrate species over recent decades and has been repeatedly used to assess changing state global biodiversity. LPI indicates that populations have decreased by almost 70% last 50 years. This is in striking contrast with current studies based on same data show increasing decreasing are balanced average. We examined methodological pipeline calculating search for source this discrepancy. found calculation biased...
Abstract Temperature and productivity appear as universal positive correlates of species richness. However, the strength shape species-temperature (STR) species-productivity (SPR) relationships vary widely, causes this variation are poorly known. We analysed (1) published richness data for multiple taxa sampled in various regions (2) different clades within vertebrate classes globally, to test effects spatial scale characteristics examined on direction STRs SPRs. There striking differences...
Abstract Range size is a universal characteristic of every biological species, and often assumed to determine diversification rate. However, the relationship between range past future species remains elusive. On one hand, there are strong theoretical arguments that large-ranged should have higher rates diversification. other observation small-ranged phylogenetically clustered form spatially localized diversity hotspots indicates high species. We use cladogenetic state-dependent model applied...