Effects of experimental warming on herbivory and fungal pathogen load on subalpine grasses
Rising global temperatures are predicted to alter community dynamics by shifting species ranges and altering biotic interactions. Herbivory is expected to increase with prolonged growing seasons and heightened animal metabolic rates; pathogen damage may increase as well. Thus, we investigated whethe
Asymmetrical pollen success in Ipomopsis (Polemoniaceae) contact sites
Use of macroinvertebrates to assess water quality at three sites along the East River
Variation in bill morphology and pollen prevalence in the Broad-Tailed Hummingbird (<i>Selasphorus platycercus</i>)
We found that the Broad-Tailed Hummingbird (Selasphorus platycercus) exhibits significant intraspecies variation across several morphological traits, including those important in foraging. However, the effects of these morphological variation on flower visitation is not well understood. To begin to
Combined Effects of Aridity and Herbivory on Plant Performance
Site-fidelity, longevity, and population dynamics of broadtailed hummingbirds: a ten-year study
Feeding behavior as affected by the risk of predation in <i>T. minimus</i> and <i>S. lateralis</i>
Influence of host plant height and distribution on herbivory patterns
The effects of drought on subalpine floral community diversity
Global climate change is a threat to ecosystems globally. In subalpine environments, one of the
Pond nutrient storage across permanence and temporal gradients
Our goal was to understand how range shifts in detrivorous larval caddisflies could affect nutrient storage along a pond permanence gradient in the Mexican Cut Preserve (Gunnison County, Colorado). As part of a larger project quantifying other ecological impacts and interactions arising from the cad
Observations on light and temperature orientation in <i>Ambystoma tigrinum</i>
Protandry and habitat quality in <i>Speyeria mormonia</i>
Feeding of a lotic mayfly grazer as quantified by gut influorescence
Dormancy rates in microbial communities across an elevational gradient
Despite the broad impacts microbial dormancy has on ecosystems and ecosystem models, dormancy as a response to climate-change-related environmental stressors is poorly understood. Dormancy is an essential bet-hedging strategy used by microbes to tolerate unfavorable conditions and increase overall c
Concentration-discharge behavior as an indication of groundwater contribution in Copper Creek sub-catchment of the Upper East River Basin
Groundwater in high elevation watersheds is difficult to quantify, but remains a major component in the hydrologic budget for the western United States. Concentration-discharge (C-Q) data can provide a framework for characterizing groundwater flow in small alpine catchments by indicating fluid resid
Does bumble bee (<i>Bombus spp.</i>) diet breadth vary with differences in floral resource abundance?
In the Rocky Mountains of Colorado, changes in the availability of floral resources through the growing season may affect the ability of bumble bee colonies to successfully complete their life cycle and produce reproductive individuals in the season’s end. A way bees could potentially deal with this
Evaluation of mitigated wetlands, Gunnison, CO
Bill Morphology and Niche Partitioning in <i>Selasphorus platycercus</i>
It has often been stated that the bill shape of hummingbirds is an example of ecological adaptation, as the morphology of their bills are strongly associated with flower nectar resources (Bleiweiss 1999). Broadtailed hummingbirds (Selasphorus platycercus) are considered the most characteristic h