354 results — type: Thesis ·
Strategies of food plant exploitation in a complex of oligophagous butterflies
Interpopulation variation and optimal mating in the perennial herb, Polemonium brandegeei
Generalist pollinated plants receive pollination services from a wide range of animals, but pollinator effectiveness varies. More effective pollinators in generalist systems optimize pollen transfer by promoting outcrossing between more distant plants. This leads to increased pollinator mediated sel
The ecology and evolution of host plant use by the generalist membracid, <i>Publilia modesta</i>
The taxonomy and ecology of the tiger salamander of Colorado
Diet and Hibernation of Yellow-bellied Marmots: Why are Marmots so Fat?
Predicting trophic cascades in an antagonistic/mutualistic web
Climate change, phenological shifts, and species interactions: Case studies in subalpine plant and migratory fish populations
Climate Change, Phenological Shifts, and Species Interactions:
Forest carbon cycling along an elevation gradient: the influence of species and climate
Effects of altitude on co-flowering phenology in a montane wildflower community
Phenology is an important life history trait. As altitude increases in alpine environments, the growing season shortens and flowering phenology is more compressed. Co-flowering could occur more at higher elevations as a compensation for the shorter growing season. However, interspecific competition
Effects of nectar-robbing bumblebees on hummingbird-pollinator behavior and plant reproductive success in <i>Ipomopsis aggregata</i> (Polemoniaceae)
Soil feedbacks and arbuscular mycorrhizal fungi of <i> Linaria vulgaris </i> invasion
Invasive plants reduce native plant diversity both directly through competition and
A Monograph of the <i>Lupinus ornatus</i> Complex
Ecological consequences of dioecism in plants: a case study of sex differences, sex ratios and population dynamics of <i>Valeriana edulis</i> nutt
Resource partitioning and community structure: A study of bumblebees in the Colorado Rocky Mountains
Reconnaissance geology of the Mississippian Leadville limestone and implications for mineralization controls, Fulford mining district, Eagle County, Colorado
Deserving of much appreciation are Russell K. Murphy, who assisted in navigating the rugged field terrain, and the E. C. Lorig family of Eagle, Colorado, whose friendship, generosity, and guidance were extremely valuable
Tritrophic mutualisms in a changing climate
Warmer than average temperatures and decreased annual precipitation caused by climate change are affecting the growth and reproduction of many species, including flowering plants. Climatic shifts may affect angiosperm functional traits, such as water use efficiency and nectar sugar concentration, wh
Revealing the direct and indirect effects of climate change on soil nutrient dynamics and forage resources in mountain ecosystems
The loss of aboveground plant diversity alters belowground ecosystem function; yet, the mechanisms underpinning this relationship and the degree to which plant community structure and climate mediate the effects of plant species loss remain unclear. Here, we explored how plant species loss through e
Late Quaternary Paleoecology of Two High-Elevation Mammal Species from the Southern Rocky Mountains, Colorado, USA
The Quaternary period has been characterized by global climate and environmental
How vulnerable are pollen-specialist solitary bees to temperature-mediated shifts in the timing of food availability?
Rising temperatures are advancing the seasonal timing of flowering and pollinator activity in
Optimal reproductive strategy in yellow-bellied marmots: Unveiling the consequences of age at first reproduction on survival and lifetime reproductive success
When to reproduce for the first time is a key question in evolutionary ecology.