1,559 results — type: Student Paper
Nutrient limitation of the nuisance, stalk-forming diatom, <i>Didymosphenia geminata</i>, in Rocky Mountain streams
The range of some algae has been increasing in recent years due to either internal (genetic) or external (environmental) factors that have been expanding both the nutrient and pH range at which they can survive. Didymoshenia geminata (didymo) is a species of diatom with a silica casing that can form
Effects of climatological factos on annual growth of shrubby species of the rocky mountains
Determining whether tourist abundance and reproductive status predispose golden-mantled ground squirrels (<i>Callospermophilus lateralis</i>) to vehicular accidents
Roads are a significant cause of biodiversity loss around the world, impacting wildlife by disrupting natural environment, changing abundance patterns of wildlife, and destroying habitat (Garrah et al. 2015). One of the most direct effects that roads have on animals is mortality from vehicular colli
Climate Change and Parasitism: An Investigation into Parasitic Bees' Climate Responses as Compared to their Hosts
✦ Bombus insularis With an increase of research into how climate change has ✦ Sphecodes sp. affected bees, only a fraction of that research has been ✦ Kleptoparasite conducted in relation to bees with parasitic life history strategies. Parasitic bees serve important ecological roles in the ✦ Social
Quantifying Nectar Trait Responses to Natural Variation in Water Availability in Subalpine Plant Communities
Floral rewards are crucial for plant reproductive success and pollinator survival. Although nectar volumes and sugar concentrations have been quantified for many species of flowering plants, many questions remain regarding sources of intraspecific and interspecific variation, including the effects o
How Spatial Variation Affects Plant Phenology
Climate change effects the timing of phenology, which can have consequences on plants and their pollinators. A critical reason for this is due to early snowmelt. However, there are other variables that could affect phenology. In heterogenous environments, plants could be buffered by these variables,
Exploring effects of proliferation of <i>Didymosphenia geminata</i> on abundance and coexistence of <i>Rhyacophila</i> species (Trichoptera) in streams near the Rocky Mountain Biological Laboratory
Flying by night: Comparing crepuscular pollinator networks across two sites in Western North America
Recently, declines among both honeybees and native pollinators have raised concerns about the impacts of habitat loss and climate change on pollinators; likewise, studies have revealed that non-honeybee pollinators, including various Lepidoptera, are more important than previously thought for both a
Pollinator effectiveness of <i>Mertensia fusiformis</i>, <i>Delphinium nelsonii</i>, and <i>D. barbeyii</i>: is there one best pollinator to which the plant is adapted?
Assessing the forecastability & forecast skill of models to predict sex ratios of Valeriana edulis
Anthropogenic actions are rapidly changing ecological systems, and the species specific responses to this change are expected to have great impacts on ecological organization, natural resource abundance, and human health. Scientists urgently need accurate forecasts to help inform social, political,
The effect of herbivory on nectar production of <i>Ipomopsis aggregata</i>
Are leafhoppers to blame? A study of the damage in aspen clones in Gunnison County, CO
Foraging behavior of <i>Ambystoma tigrinum nebulosum</i>
The impact of climate change on Rocky Mountain plant communities: Differences in floral trait along an elevational gradient of transplanted communities
Alpine climates are seemingly adverse environments for plants. These habitats directly impact plants via pollinator scarcity and abiotic factors like extreme temperatures and precipitation that influence resource allocation. As a result, elevational gradients are natural laboratories that can be use
Does road dust affect growth rates in <i>Ipomopsis aggregata</i>?
The physiological effects of road dust on the wildflower rosettes Ipomopsis aggregata, scarlet gilia, are shown to non-significantly reduce their growth rate in two meadows near the Rocky Mountain Biological Laboratory. Growth rate was a proxy for the amount of photosynthesis that occurred in the ro
Identifying the Impact of Biotic Interactions on Meadow Species Distributions in Sagebrush and Bunchgrass Dominated Systems
Understanding drivers of species distributions is an important challenge for more accurately projecting ecological change under climate warming. Species distributions have often been modeled using solely environmental factors as predictors. However, there is much recent data supporting the hypothesi
Ethogram: <i>Ambystoma tigrinum</i>
Effects of recreational trails on small mammal communities in north-central Gunnison County, Colorado
Human recreation can lead to changes in behavior and distribution patterns of wildlife populations. This project aims to (1) evaluate the effectiveness of the Hunt trap, a novel non- invasive technique used to estimate small mammal abundance (2) determine the distance from trails at which we see an
Effects of weather and floral density on foraging activity of cavity nesting bees (<i> Osmia </i>spp.)
Thermoregulation is an important factor for bee flight which ultimately contributes to an individual’s ability to forage and produce offspring. Rising temperatures could benefit insects by increasing their efficiency in reproduction and provisioning. However, warming could negatively impact floral r
Volatile organic compounds as signals for pollinators and their consistency across years
Volatile organic compounds (VOCs) are emitted by every part of a plant and are believed to work as possible olfactory signals, drawing in pollinators and antagonists. This study was designed to address whether VOCs served as a signal to pollinators, indicating the size of the nectar reward. This par
