A5051769849- Plant and animal studies
- Ecology and Vegetation Dynamics Studies
- Botany and Plant Ecology Studies
- Genetic diversity and population structure
- Plant Parasitism and Resistance
- Species Distribution and Climate Change
- Fern and Epiphyte Biology
- Lepidoptera: Biology and Taxonomy
- Plant Diversity and Evolution
- Mediterranean and Iberian flora and fauna
- Lichen and fungal ecology
- Genetically Modified Organisms Research
- Plant Pathogens and Fungal Diseases
- Plant and Fungal Species Descriptions
- Insect and Arachnid Ecology and Behavior
- Forest Insect Ecology and Management
- Plant Taxonomy and Phylogenetics
- Bryophyte Studies and Records
- Peatlands and Wetlands Ecology
- Evolution and Genetic Dynamics
- Geotourism and Geoheritage Conservation
- Land Use and Ecosystem Services
- Forest Ecology and Biodiversity Studies
- Biological Control of Invasive Species
- Genetic and phenotypic traits in livestock
University of Amsterdam
2010-2025
Signature Research (United States)
2020
Ministerie van Economische Zaken, Ondernemerschap en Technologische Innovatie
2017
Wageningen University & Research
2017
France Cohortes
2017
Vrije Universiteit Amsterdam
1994-2012
Institute for Biodiversity
2000-2011
Swedish University of Agricultural Sciences
2001
Clinique Victor Hugo
2000
Butterfly Conservation
1996-1998
1 A total of 35 transition and elasticity matrices for the rare iteroparous herb Gentiana pneumonanthe was analysed temporal spatial variation. The data used were collected annually from 10 sites in six different populations on up to seven occasions period 1987-93. 2 In general, variation higher than elasticities, while between-site high both matrices. 3 relative contributions three life-history transitions, progression (or growth, G), recruitment seed (fecundity, F) survival (retrogression...
After analysis of population age-state spectra Gentiana pneumonanthe in a variety vegetation types, three different types could be distinguished: (a) «invasive» or «dynamic» populations, characterized by high densities seedlings and juveniles relative to the adult age states, (b) «normal» «stable» populations with states prevailing, but low juveniles, (c) «regressive» «senile» consisting only flowering vegetative individuals. The structure surrounding appears very important determining marsh...
The amount of genetic variation in the rare perennial herb Gentiana pneumonanthe L. was determined to explore its relation population size. Differences isozyme between maternal plants and their offspring were used investigate relationship size outcrossing rate. In 25 populations Netherlands, differing from 1 more than 50,000 flowering individuals, 16 allozyme loci analyzed on leaves grown a greenhouse. Population significantly positively correlated with proportion polymorphic loci, but only...
Abstract Uncertainty associated with ecological forecasts has long been recognized, but forecast accuracy is rarely quantified. We evaluated how well data on 82 populations of 20 species plants spanning 3 continents explained and predicted plant population dynamics. parameterized stage‐based matrix models demographic from individually marked determined these sizes observed at least 5 years into the future. Simple forecasted dynamics poorly; only 40% fell within our forecasts’ 95% confidence...
We examined how ecological and evolutionary (eco-evo) processes in population dynamics could be better integrated into viability analysis (PVA). Complementary advances computation genomics can combined an eco-evo PVA to offer powerful new approaches understand the influence of on persistence. developed mechanistic basis using individual-based models with individual-level genotype tracking dynamic genotype–phenotype mapping model emergent population-level effects, such as local adaptation...
Summary Transition matrix models were used to evaluate the effects of environmental stochasticity and four different methods grassland management on dynamics viability a population biennial Gentianella campestris (Gentianaceae) in species‐rich grassland. Data collected between 1990 1995. Continuous summer grazing, prevailing strategy Scandinavian grasslands, resulted high recruitment new plants, mainly because litter accumulation was prevented gaps created by trampling. Trampling repeated...
Summary Invasive plants can have a major impact on local plant and animal communities. However, effects of invasions arthropod communities the potential drivers rarely been studied. We present meta‐analysis 56 studies abundance richness Moreover, we study role five invader habitat attributes to assess their influence direction magnitude effect communities: time since introduction; woody vs. herbaceous invaders; presence native congeners; canopy cover invader; single multiple invaders. found...
We investigated the relationships among a number of population and site characteristics ovule seed production set in 17 populations rare, self‐compatible, bumblebee‐pollinated perennial Gentiana pneumonanthe L. Netherlands. Population size offspring heterozygosity were used as properties; grass heath cover, soil concentrations various ions, acidity (pH), moisture habitat characteristics. Our aim was to find out how important genetic variation are for rare plant, when accounting parameters...
Abstract Especially for rare species occurring in small populations, which are prone to loss of genetic variation and inbreeding, detailed knowledge the relationship between heterozygosity fitness is generally lacking. After reporting on allozyme relation population size plant Gentiana pneumonanthe , we present a more analysis association individual fitness. The aim this study was test whether increased heterozygous individuals explained best by ‘inbreeding’ hypothesis or ‘overdominance’...
1 We need to understand how threatened plant species respond natural or management-induced habitat changes conserve them successfully. Because long-term demographic studies are not feasible for large numbers of species, there is a clear simple short-term methods assess responses. 2 The population structure 23 populations the endangered perennial Salviapratensis was studied in relation vegetation and management dry floodplain grasslands along Dutch rivers. aims study were (i) evaluate...
Abstract: Transformation of tropical forests is likely to affect seed-dispersal patterns and influence the composition epiphytic plant communities in human-altered habitats. We tested this hypothesis by carrying out a comparative study seed influx, survival growth transplanted seedlings bromeliads among isolated trees six pasture areas, forest edges sites montane area Costa Rica. In total, 72 traps trapped 1285 seeds over 2-mo period dry season 2003. For all four investigated bromeliad...
Abstract Aim This study aims to assess the impact of climate change on forests and vascular epiphytes, using species distribution models (SDMs). Location Island Taiwan, subtropical East Asia. Methods A hierarchical modelling approach incorporating forest migration velocity type–epiphyte interactions with classical SDMs was used model responses eight types 237 epiphytes for year 2100 under two scenarios. Forest distributions were modelled modified by dominant tree species’ dispersal...
Many ecosystems worldwide are threatened by anthropogenic causes, with high-intensity grazing large herbivores as a significant risk factor for biodiversity. Although the drivers of α-diversity well-studied animal and plant communities, they often overlooked soil microbes, particularly in natural systems. We therefore used novel innovative information-theoretic approach to structural equation model selection multimodel path coefficient averaging identify these drivers. Our findings show that...
Summary Hybridization between crops and wild relatives seems possible for many crop taxa. Subsequent introgression of crop‐specific traits into might lead to the formation introgressant populations. Until now, few studies have evaluated demographically fitness changes combined with empirically defined heterosis breakdown levels assess likelihood such potential hybrid population formation. For establishment case study data, we produced four generations hybrids predominantly autogamous annuals...
Many species suffer from anthropogenic habitat fragmentation. The resulting small and isolated populations are more prone to extinction due to, amongst others, genetic erosion, inbreeding depression Allee-effects. Genetic rescue can help mitigate such problems, but might result in outbreeding depression. We evaluated offspring fitness after selfing outcrossing within among three very remnant of the heterostylous plant Primula vulgaris. used greenhouse-grown these test several components. One...