A5069345269- Plant and animal studies
- Ecology and Vegetation Dynamics Studies
- Insect-Plant Interactions and Control
- Forest Insect Ecology and Management
- Insect and Arachnid Ecology and Behavior
- Species Distribution and Climate Change
- Rangeland and Wildlife Management
- Genetic diversity and population structure
- Fire effects on ecosystems
- Hymenoptera taxonomy and phylogeny
- Arsenic contamination and mitigation
- Indigenous Studies and Ecology
- Aquaculture Nutrition and Growth
- Fish biology, ecology, and behavior
- Plant and Fungal Interactions Research
- Insect symbiosis and bacterial influences
- Crustacean biology and ecology
- Horticultural and Viticultural Research
- Lichen and fungal ecology
Northern Arizona University
2010-2020
California State University, San Bernardino
2020
Claremont McKenna College
2017
Scripps College
2017
Denison University
2015
University of California, Davis
2007
Ecology Letters (2011) 14: 433–443 Much is known about facilitation, but virtually nothing the underlying genetic and evolutionary consequences of this important interaction. We assessed potential phenotypic differences in facilitative effects a foundation species to determine composition an Alpine community Arizona. Two phenotypes Geum rossii occur along gradient disturbance, with 'tight' competitive cushions stable conditions 'loose' disturbed conditions. A common-garden study suggested...
Abstract Genetic variation in plants is known to influence arthropod assemblages and species interactions. However, these influences may be contingent upon local environmental conditions. Here, we examine how plant genotype‐based trophic interactions patterns of natural selection change across environments. Studying the cottonwood tree, Populus angustifolia , galling aphid, Pemphigus betae its avian predators, used three common gardens an gradient effects genotype on gall abundance, size,...
Patterns of woody-plant mortality have been linked to global-scale environmental changes, such as extreme drought, heat stress, more frequent and intense fires, episodic outbreaks insects pathogens. Although many studies focussed on survival in response specific physiological stresses, little attention has paid the role genetic heritability traits local adaptation influencing patterns plant mortality, especially non-native species. Tamarix spp. is a dominant, riparian tree western North...
Insect reproduction is typically spread out in time and space, making estimates of lifetime reproductive success quite difficult under natural field conditions. Such are, however, critical to providing rigorous tests theory for behavior. One approach circumventing this problem study insects whose compressed space time, ovarian dynamics (oogenesis, oosorption, oviposition) are simplified. We investigated the gall midge Rhopalomyia californica Felt (Diptera: Cecidomyiidae) as a possible...
1. The Chinese brake fern ( Pteris vittata L.; Pteridaceae) can accumulate up to 27 000 mg kg −1 dry wt. of arsenic (As) from the soil into its above‐ground biomass. They may use this As deter invertebrate threats. 2. This study explored how concentrations [As] in fern, and associated with influenced abundance composition various invertebrates. 3. Populations P. were identified field. Soils base 3 m away each plant collected pitfall traps installed. Soil ([As]) measured via inductively...
Abstract Several studies have demonstrated the ecological consequences of genetic variation within a single plant species. For example, these show that individual genotypes support unique composition plants' associated arthropod community. By contrast, fewer explored how may influence evolutionary dynamics in plant's Here, we examine aphids respond evolutionarily to their host plant. We conducted two experiments local adaptation and rapid evolution free‐feeding aphid Chaitophorus populicola...
The American chestnut (Castanea dentata) was once widespread in eastern North America and an ecologically important hardwood tree of deciduous forest communities prior to its near-eradication by blight (Cryphonectria parasitica). Remnant populations occur across much historical range, especially older forests the Appalachians northeastern U.S. However, broad swaths southwestern portion species' range remain poorly documented, potentially limiting representation genetic variation for local...