Natural variation in pollinator composition and services: effects on the reproductive success of <i></i>Ipomopsis aggregata<i></i>
The high life: a subalpine fir and Englemann spruce community in an avalanche zone
Effects of manure on germination of <i>Bromus tectorum</i> in contaminated mine soil
Phenomenon of a moist environment shrub growing in dry conditions: why is it there?
Floral biology
Evolution of hydrothermal fluids from the deep porphyry environment to the shallow epithermal environment, The
The current understanding of magmatic-hydrothermal processes resulting in the formation of porphyry and epithermal deposits is based on case studies that focused on deposits such as Santa Rita porphyry copper deposit in New Mexico, the Refugio porphyry gold deposit in Chile, and the Summitville high
Environmental forces drive morphological variation in an alpine annual plant
The way in which plants respond evolutionarily to environmental change partially depends on the magnitude of variation present within populations. In an attempt to understand the evolutionary response of Androsace septentrionalis (Rock Jasime) to current and future climate change in the Elk mountain
Effects of nectar robbing on pollen deposition and hummingbird-pollinator behavior in <i>Ipomopsis aggregata</i>
Nectar robbing can affect both male and female components of plant reproduction. To understand the mechanisms driving those plant-reproductive outcomes, I studied the effects of nectar robbing on pollen deposition and pollinator behavior in the hummingbird-pollinated host plant Ipomopsis aggregata.
The effects of road proximity on pollinator visit to <i>Mertensia ciliata</i>
Competitive foraging interactions in a sub-alpine ant community
What attracts snipe flies (Diptera: Rhagionidae, <i>Symphoromyia</i> Frauenfeld)? The effects of CO2 and mammalian temperature
Determining Long-Term Success of Revegetation Efforts in Disturbed Sites
At the Rocky Mountain Biological Laboratory (RMBL), revegetation is an important area of research because there are many areas of disturbed land that are more vulnerable to the spread of invasive species. In my project, I revisited a former student’s revegetation work in order to determine the long-
Comparative approaches to estimating repertoires and American Robin individuality
Song repertoire size is the range of distinct syllables, phrases, and song types created by an individual or population. Variations within songs create complex repertoires, making them difficult to estimate. There are several methods to estimate repertoire size, however prior studies discovered that
A balanced diet: Effects of ant (Hymenoptera: Formicidae) nutritional state on the balance between mutualism and predation upon aphids (Hemiptera: Aphididae)
Mutualisms are commonly dependent on the ecological context in which partners interact. In ant‐aphid interactions, the dietary status of ants has been hypothesized to be one factor that may mediate ant‐aphid interactions. This hypothesis was supported in one laboratory study with one ant species. We
The effect of the mermithid parasite Gasteromermis sp. (Nematoda: Mermithidae) on the drift behaviour of its mayfly host, Baetis bicaudatus (Ephemeroptera: Baetidae): a trade-off between avoiding pred
The response of four subalpine forbs to supplemental nitrogen within different soil moisture environments
Anthropogenic environmental change currently threatens to alter resource availability across the planet, likely driving responses by plant species. In the Colorado Rocky Mountains, climate change is expected to decrease soil moisture availability and increased nitrogen deposition is expected to incr
Water-use efficiency may influence the distribution of <i>Ipomopsis aggregata</i>, <i>I. tenuituba</i>, and their natural hybrids along an environmental gradient
In flowering plants, environment-mediated hybrid fitness plays a large role in hybrid zone dynamics. The relationship of physiological traits to hybrid fitness, however, has not been described for many plant systems. In this study, we investigated the effects of soil moisture on water-use efficiency