353 results — type: Thesis
Competition and cooperation in plant/pollinator systems
Life history phenomena of <i>Ambystoma tigrinum</i> in montane Colorado
Relationships matter: How the social environment affects individual fitness-related behaviors
Individuals respond to predators through an array of anti-predator behaviors that can be influenced by their social environment, specifically through protection from predators or by altering risk-resource trade-offs through competitive exclusion from resources. While social effects like group size a
The effects of climate change and biodiversity loss on mutualisms
The abiotic environment drives species abundances and distributions both directly and indirectly through effects on multi-trophic species interactions. However, few studies have documented the individual and combined consequences of these direct and indirect effects. We studied an ant-tended aphid a
Leaf Miner/Bittercress Interaction: Experimental Evaluation of a Spatial Pattern of Resource Use
Plant-Pollinator Interactions and Environmental Change: Effects of Experimental Changes in Phenology and Water Availability on a Montane Wildflower
Density effects in the plant-animal interactions of <i>Potentilla gracilis douglas</i> (Roseaceae)
Examining the impact of pollen diet composition on bee development and lifespan
Pollen is the sole protein source for most bees and the largest component of their larval diets.
Effects of snow-melt timing on three high altitude Potentilla (Rosaceae) species: growth, reproduction, and distribution
Conditional Exploitation and Context-Dependent Fitness Consequences of Pollination Mutualisms
The aboveground primary productivity within each of four areas, differing in length of the snow-free season, was determined in a high subalpine (3380 m) herbaceous meadow in Colorado. Net productivity, minus losses to herbivores, ranged from 114 g -m™ - yr“ in the area with the shortest snow-free pe
Altitudinal gradients do not predict plant-symbiont responses to experimental warming.
Reproductive Ecology of Female Golden-Mantled Ground Squirrels
Dispersal of the golden-mantled ground squirrel
Dispersal, the permanent movement of an animal away from its location of birth, is common in mammals and can have an important role in shaping demography, genetics, distribution, and social structure. Dispersal entails potential costs but also potential benefits, and the dispersal decision is though
Leaf venation networks link climate change to plant form and function
The role of competition in the foraging ecology of two herbivorous stream mayflies
Adaptive nature of floral nectar production rate for the hummingbird-pollinated plant <i>Ipomopsis aggregata</i>
Plant responses to the joint effects of herbivores and pollinators
The structure and function of subalpine ecosystems in the face of climate change
Subalpine ecosystems are experiencing rapid changes in snow pack, temperature, and precipitation regime as a result of anthropogenic climate forcing. These changes in climate can have a profound effect on subalpine ecosystem structure and functioning, which may ultimately feed back to climate change
From animals to ecosystem processes: Predicting functional outcomes of climate-driven changes in animal communities through species traits
Functional trait diversity within species assemblages ultimately determines whether or not ecosystem processes are sensitive to shifts in relative abundances or species composition. For example, trait variation suggests detritivores process detritus at different rates and make different relative con