A5082461227- Freshwater macroinvertebrate diversity and ecology
- Fish Ecology and Management Studies
- Species Distribution and Climate Change
- Ecology and Vegetation Dynamics Studies
- Aquatic Invertebrate Ecology and Behavior
- Plant and animal studies
- Wildlife Ecology and Conservation
- Forest Ecology and Biodiversity Studies
- Animal Ecology and Behavior Studies
- Invertebrate Taxonomy and Ecology
- Mollusks and Parasites Studies
- Wildlife-Road Interactions and Conservation
- Lepidoptera: Biology and Taxonomy
- Amphibian and Reptile Biology
- Forest Insect Ecology and Management
- Parasite Biology and Host Interactions
- Insect-Plant Interactions and Control
- Hydrology and Sediment Transport Processes
- Land Use and Ecosystem Services
- Aquatic Ecosystems and Phytoplankton Dynamics
- Fish biology, ecology, and behavior
- Marine Biology and Ecology Research
- Winter Sports Injuries and Performance
- Forest Management and Policy
- Insect Pest Control Strategies
Balaton Limnological Institute
2016-2025
Hungarian Research Network
2021-2023
Centre for Ecological Research
2012-2021
University of Basel
2009-2020
Hungarian Academy of Sciences
2006-2015
Universidade dos Açores
2012
Eötvös Loránd University
2011
University of Neuchâtel
2011
University of Nyíregyháza
2008
Plant Protection Institute
2003-2007
A conceptual framework is proposed to evaluate the relative importance of beta diversity, nestedness and agreement in species richness presence – absence data matrices via partitioning pairwise gamma diversity into additive components. This achieved by calculating three complementary indices that measure similarity, replacement, difference for all pairs sites, displaying results a two‐dimensional simplex diagram, or ternary plot. By summing two terms at time, one‐dimensional simplices are...
Abstract Aim To propose a unified framework for quantifying taxon ( T β), phylogenetic P β) and functional F beta diversity via pairwise comparisons of communities, which allows these types to be partitioned into ecologically meaningful additive components. Location Global, with case studies in E urope the A zores archipelago. Methods Using trees as common representation taxon, diversity, we partition total (β ) its replacement (turnover, β repl richness difference rich components according...
Abstract The hypotheses that beta diversity should increase with decreasing latitude and spatial extent of a region have rarely been tested based on comparative analysis multiple datasets, no such study has focused stream insects. We first assessed how well variability in insect metacommunities is predicted by group, latitude, extent, altitudinal range, dataset properties across drainage basins throughout the world. Second, we relative roles environmental factors driving variation assemblage...
Euclidean distance is commonly involved in calculating functional diversity (FD), for example, measures based on dendrogram branch lengths. We point out that this function inappropriate many cases and the choice of clustering method more crucial than earlier thought. Gower's formula UPGMA are suggested here as a standard combination techniques FD. The advantage measure its suitability to mixture scale types tolerance missing values. Examples demonstrate robust has better goodness fit...
Beta diversity and nestedness are central concepts of ecology biogeography evaluation their relationships is in the focus contemporary ecological conservation research. patterns originated from two distinct processes: replacement (or turnover) species loss gain) leading to richness differences. Nested distributional generally thought have a component deriving beta which independent processes. Quantification these phenomena often made by calculating measure diversity, resulting value being...
Summary Other than some classical ideas, large‐scale approaches to understand variation in organismal traits (or the trait composition of an ecological community) across stream ecosystems are rather recent. Recent case studies and review papers show clear evidence for usefulness trait‐based analyses bioassessment, but how community vary along natural gradients at large scales has not yet been synthesised. Here, we attempt fill this gap by providing a synthesis patterns communities from...
Abstract Quantifying the relative importance of how local (environmental or niche‐based) and regional (dispersal‐related spatial) processes regulate assembly communities has become one main research avenues community ecology. It been shown that degree isolation habitats in landscape may substantially influence role environmental filtering dispersal‐related metacommunities. Dendritic stream networks are unique landscape, where more isolated upstream sites have predicted to be primarily...
Traits-based community analyses are receiving increasing attention. However, consistent interpretation of empirical results and ecological understanding in stream ecology limited by ambiguous terminology. Furthermore, the measurement scales used to analyze trait data, especially ordinal-scale often inappropriately applied. We identify discuss these shortcomings offer a solution for an operative algebraically correct treatment traits unified nomenclature that facilitates direct comparison...
Summary 1. Characterisation of biodiversity is typically based on taxonomic approaches, while much less known about other related aspects. Functional trait diversity one such component that has not been addressed rigorously in ecological research until recently. We tested the congruence between taxonomic‐ and trait‐based examined how spatial configuration, local abiotic environmental factors biotic effects interact to influence characterisation freshwater fish assemblages. 2. Fish assemblage...
Abstract Aim We examined the responses of beta diversity aquatic and terrestrial beetles to ecogeographical variables, including climate, land cover use, across Northern Europe. Location Europe (Denmark, Sweden, Norway Finland). Methods Information on occurrence ground diving European biogeographical provinces was collated from literature sources. Beta using Jaccard dissimilarity coefficient as well its replacement richness difference components. Each three matrices (responses) modelled...
Summary The metacommunity framework has shed light upon the significance of local and regional processes in shaping ecological communities. However, our knowledge is limited how landscape context (i.e. type positioning habitats) influences structuring metacommunities. We examined role environmental selection (niche‐based species sorting), dispersal drift stochastic changes abundance) mechanisms on fish metacommunities riverscapes. used a hierarchical design (i) individual running water...
A long-standing problem in biological data analysis is the unintentional absence of values for some observations or variables, preventing use standard multivariate exploratory methods, such as principal component (PCA). Solutions include deleting parts by which information lost, imputation, always arbitrary, and restriction to either variables observations, thereby losing advantages biplot diagrams. We describe a minor modification eigenanalysis-based PCA correlations covariances are...
Abstract Urbanization is one of the most serious threats to stream ecosystems worldwide. It crucial understand its effects on organisms as a prerequisite for mitigation urban degradation. Our aim was investigate general urbanization in moderately urbanized landscape and assess relationship between local environmental variables biotic attributes macroinvertebrate assemblages. Multiple sites at low-order streams flowing from natural forested areas landscapes were surveyed. We found that...
Abstract We studied day‐night patterns in fish diversity natural, gravel‐sand stretches and boulder covered rip‐rap habitats the littoral zone of River Danube. Sample‐based rarefaction indicated marked differences species richness between day night, smaller for both night. Whereas, individual‐based no such substantial richness. However, distinct assemblages were found based on relative abundance data, great conservation concern tended to link natural habitats. The biological...
Extracting meaningful information from community data is among the most challenging tasks of ecology. Whereas presence-absence matrices are commonly used in different analytical frameworks, we argue that conceptual distinction patterns (on which inference made), pairwise pattern components (PPCs, reflect unique response communities for pairs sites), and measures (which quantify a relevant property PPCs), liberates our field possible misinterpretation results derived existing approaches. The...
Abstract Among the many diversity indices in ecologist toolbox, measures that can be partitioned into additive terms are particularly useful as different components related to ecological processes shaping community structure. In this paper, an decomposition is proposed partition structure of a given three complementary fractions: functional diversity, redundancy and species dominance. These sum up one. Therefore, they used portray ternary diagram. Since identification community‐level...
Abstract Transitioning from perennial to non-perennial flow regimes causes ecological shifts in aquatic communities. Aquatic macroinvertebrates deploy resistance and resilience strategies cope with intermittency, crucial rivers long-term seasonal dry episodes. Less is known, about how these support community persistence streams that only recently have experienced drying, where local assemblages lack such adaptations. Our study conducted two four-season campaigns, separated by a one-year...