1,559 results — type: Student Paper ·
Home range size, conspecific overlap, and weight gain of the golden-mantled ground squirrel, <i>Spermophilus lateralis</i>
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
The effects of Castilleja miniata's parasitic relationship with Delphinium nuttallianum on pollinator visitation and pollination success
Castilleja miniata is a hemiparasite capable of taking up chemical toxins from its host plant. A unique relationship is C. miniata’s parasitism on Delphinium nuttallianum (which contains alkaloids); alkaloids from D. nuttallianum are taken up into C. miniata’s nectar which could negatively affect C.
Nectar robbing in Ipomopsis aggregata: does high nectar production confer tolerance?
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
The role of non-caddisfly taxa on detrital processing in montane ponds
Understanding the processing of detritus by different macroinvertebrates in montane ponds is important because either directly or indirectly most energy and nutrients flow through the detrital pathway. Understanding the degree to which macroinvertebrate species vary in detrital processing is central
Do yellow-bellied marmots respond to predator vocalisations?
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
Temporal Variation of Thermal Microhabitat Use of Tiger Salamanders
Climate change is increasing global temperatures, which forces many species to experience environments that they have not been previously exposed to. Ectotherms are particularly sensitive to temperature shifts, and previous research suggests that changes in phenology and habitat use can help species
Succession in the Gothic Landslide
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
Locating the Eastern Edge of a Sixty Kilometer-Wide Bull’s Eye of Miocene-Age Exhumation Near Taylor Peak A in Colorado’s Elk Mountains with Apatite (U-Th)/He Thermochronology
This research aims to clarify the timing and mechanics behind a sixty kilometer- wide Bull’s Eye of exhumation in Colorado’s Elk and West Elk mountains that took place about 15-8 million years ago (Ma). To do this, I use the apatite (U-Th)/He low temperature thermochronology (AHe) technique to study
The impact of elevational gradients on dark septate endophytes (DSE) and arbuscular mycorrhizal fungi (AMF) in mountains
The biogeography of soil microbial communities is changing in response to increased anthropogenic disturbance, such as climate change. However, the response patterns of microbes to these rapid and accelerating changes is poorly quantified, especially when compared with our understanding of macroscop
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,
Impacts of snowmelt timing and precipitation on the expression of vegetative traits and floral traits in <i>Ipomopsis aggregata</i>
This study investigated the impact of water availability and snowmelt timing on the species Ipomopsis aggregata. We looked to discover if I. aggregata’ s traits were plastic, and if that plasticity was adaptive. The two questions we aimed to answer were: How does timing of snowmelt and level of
Plant size and allocation to reproduction for plant demography
Stage-based population models are an important tool for quantifying the influence of biotic and abiotic factors on populations. Within studies of plant demography and life history, measuring and predicting biomass is an essential tool used to better understand a plant’s health and reproductive succe
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
An investigation into the effects of arbuscular mycorrhizal fungi (AMF) to dark septate endophytes (DSE) ratio on the coarse root to fine root ratio at varying elevation in the rocky mountains
Belowground systems are crucial for sustaining ecosystem function, but often remain unseen. Not very much is known about these systems and improving knowledge of them can aid understanding of ecosystems. Elevational gradients can be good places to test how above- and belowground systems respond to c
Optimal foraging in <i></i>Formica lasiodes<i></i> and <i></i>Formica puberula<i></i>
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