A5008924380- Ecology and Vegetation Dynamics Studies
- Plant and animal studies
- Coastal wetland ecosystem dynamics
- Biological Control of Invasive Species
- Genetic diversity and population structure
- Peatlands and Wetlands Ecology
- Rangeland and Wildlife Management
- Weed Control and Herbicide Applications
- Plant Parasitism and Resistance
- Bioenergy crop production and management
- Allelopathy and phytotoxic interactions
- Botany, Ecology, and Taxonomy Studies
- Plant responses to water stress
- Turfgrass Adaptation and Management
- Species Distribution and Climate Change
- Ecology and Conservation Studies
- Animal and Plant Science Education
- Fern and Epiphyte Biology
- Mediterranean and Iberian flora and fauna
- Seedling growth and survival studies
- Evolution and Paleontology Studies
- Chemical synthesis and alkaloids
- Plant nutrient uptake and metabolism
- Complement system in diseases
- Climate Change Communication and Perception
The Ohio State University
2015-2025
John Wiley & Sons (United States)
2019
Ecological Society of America
2019
Ecosystem Sciences
2019
Rice University
2010-2013
University of Georgia
2010-2012
University of Wisconsin–Milwaukee
2007
University of Iowa
2001
Summary Because establishing a new population often depends critically on finding mates, individuals capable of uniparental reproduction may have colonization advantage. Accordingly, there should be an over‐representation colonizing species in which can reproduce without mate, particularly isolated locales such as oceanic islands. Despite the intuitive appeal this filter hypothesis (known Baker's law), more than six decades analyses yielded mixed findings. We assembled dataset island and...
The wild North American sunflowers Helianthus annuus and H. debilis are participants in one of the earliest identified examples adaptive trait introgression, exchange is hypothesized to have triggered a range expansion annuus. However, genetic basis has not been examined. Here, we combine quantitative locus (QTL) mapping with field measurements fitness identify candidate QTL alleles likely introgressed into form natural hybrid lineage a. texanus. Two 500-individual BC1 populations were grown...
Abstract Hybridization is a common phenomenon, yet its evolutionary outcomes remain debated. Here, we ask whether hybridization can speed adaptive evolution using resynthesized hybrids between two species of Texas sunflowers ( Helianthus annuus and H. debilis ) that form natural hybrid in the wild ssp. texanus ). We established separate control populations allowed them to evolve naturally field experiment. In final common-garden, measured fitness suite key traits for these lineages. show...
Hybridization is hypothesized to promote invasiveness, but empirical tests comparing the performance of hybrid taxa versus parental in novel regions are lacking. We experimentally compared colonization ability populations wild radish (Raphanus raphanistrum) with advanced-generation hybrids between and cultivated sativus) a southeast Texas pasture, well beyond known invasive range radish. also manipulated strength interspecific competition better generalize across variable environments. In...
Polyploids are often hypothesized to have increased phenotypic plasticity compared with their diploid progenitors, but recent work suggests that the relationship between whole-genome duplication (WGD) and is not so straightforward. Impacts of WGD on moderated by other evolutionary processes in nature, which has impeded generalizations regarding effects alone. We assessed shifts mean trait values accompanying WGD, as well adaptive consequences these shifts.To isolate effects, we two lineages...
The degree to which biocontrol agents impact invasive plants varies widely across landscapes, often for unknown reasons. Understanding this variability can help optimize species management while also informing our understanding of trophic linkages. To address these issues, we tested three hypotheses with contrasting predictions regarding the likelihood success. (1) effort hypothesis: populations are regulated primarily by top‐down effects, predicting that increased efforts alone (e.g., more...
Abstract Colonization is a critical filter, setting the stage for short‐term and long‐term population success. Increased propagule pressure (e.g., more founding individuals) usually enhances colonization; however, this pattern may be driven by purely numeric effects, genetic diversity or both. To determine independent interactive effects of diversity, we conducted seed addition experiment in field using ruderal annual Arabidopsis thaliana . Propagule treatments spanned five levels, from 32...
Invasive plants are ubiquitous features of many wetland systems, resulting in impacts that extremely costly both economic and ecological terms. Approximately twenty years ago, these the mechanisms underlying invasion were crystallized a pair now-classic review papers on topic. These two contributions have guided substantial research efforts over past decades. Here, using state-of-the-art review, we present an overview progress from 20 identify priorities for next years. We structure insights...
Abstract Assisted succession could enable long‐term restoration where successional trajectories stall due to competition from invasive plants. Many invasives are shade‐intolerant; therefore, interventions reducing light availability should suppress invasion and re‐establish processes. However, given how ubiquitous nonlinearities in ecology, success also depends on identifying critical system thresholds, for example invader abundances below which regeneration of desired species is possible....
Summary 1. Dominant plant species, whether native or invasive, often change community composition and cause decreases in diversity. Still invasive species are considered more deleterious to communities than dominant natives, although evidence for this is surprisingly rare. We tested two hypotheses: (i) an exotic will have greater impacts at the level a (ii) impact be exacerbated with eutrophication. 2. Both hypotheses were by evaluating colonizer success large, well‐replicated experimental...
Summary Predicting invasion potential across a wide range of plant species using only their biological traits is often challenging. We present novel approach, aligning along multivariate axis putative invasiveness traits. The were quantified in common garden which we manipulated two critical variables thought to strongly influence invasiveness: herbivory and resource availability. used principal component analysis ( PCA ) characterize 20 based on seven key (percentage germination, specific...
Abstract Spatial patterns of trait variation across a species' range have implications for population success and evolutionary change potential, particularly in range‐expanding weedy species that encounter distinct selective pressures at large small spatial scales simultaneously. We investigated intraspecific common garden experiment with giant ragweed ( Ambrosia trifida ), highly variable agricultural weed an expanding geographic broad ecological amplitude. Our study included paired...
Wetlands provide critical wildlife habitat, improve water quality, and mitigate the impacts of floods, droughts, climate change. Yet, they are drained, filled, dredged, otherwise altered by humans, all which contribute to their high susceptibility plant invasions. Given societal significance wetlands disproportionately large amount time money spent controlling invaders in remaining wetlands, a fundamental shift must occur how we approach restoration plant-invaded wetlands. The need for more...
Abstract Interspecific competition reduces resource availability and can affect evolution. We quantified multivariate selection in the presence absence of strong interspecific using a greenhouse experiment with 35 natural accessions Arabidopsis thaliana . assessed on nine traits representing plant phenology, growth, architecture, as well their plasticities Competition reduced biomass fitness by over 98%, plastic responses to varied genotype (significant G × E) for all except specific leaf...
Urban stressors represent strong selective gradients that can elicit evolutionary change, especially in non-native species may harbor substantial within-population variability. To test whether urban drive phenotypic differentiation and influence local adaptation, we compared stress responses of populations a ubiquitous invader, reed canary grass (