The timing of snowmelt is a critical cue for the initiation of growth in mountain meadow ecosystems and can also impact the duration and magnitude of plant production. High frequency observations of species-level phenology are time consuming and require a high degree of expertise, and publicly avail

The timing of snowmelt is a critical cue for the initiation of growth in mountain meadow ecosystems and can also impact the duration and magnitude of plant production. High frequency observations of species-level phenology are time consuming and require a high degree of expertise, and publicly avail

The timing of snowmelt in mountain systems is a main driver of vegetation phenology and production, as well as recharge of soil moisture and ground water. Decreases in maximum snowpack and warmer spring temperatures have led to a higher frequency of early snowmelt. This study combines a natural elev

The files included in this data package provide site wide water level data, geochemical data, and borehole information associated with the Rifle site in Colorado during the Lawrence Berkeley National Lab (LBNL) led Integrated Field Research Challenge (IFRC) and Scientific Focus Area (SFA) research p

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

As well-studied, annual species inhabiting an environment with a short growing season, the bumble bees (Bombus spp.) in the area around the Rocky Mountain Biological Laboratory (RMBL) near Crested Butte, Colorado, provide an ideal system for monitoring climate change. In 1974, Graham Pyke conducted

Floral traits and nectar production of Ipomopsis aggregata were measured in response to water and phosphorus treatments applied to two morphotypes. Typical morphotypes underwent water and phosphorus treatments. Because stunted floral traits may be a response to drought stress, only water treatments

Estimates of species richness, while useful and common to many subdisciplines of biology, are problematic in their reliance on adequate sampling effort. How much sampling is required for an accurate estimate of species richness, and what levels of sampling will render communities comparable? This st

This project aimed to determine the mechanism of which treehopper nymphs grow in the presence of ants. Nymphs (Publilia modesta) are larger when their mutualist partner (Formica obscuripes) is present. There are two ways in which the nymphs can grow: (1) nymphs grow at the same rate, but are larger

Productive habitats can provide subsidies to neighboring habitats in the form of resources and services; however, little is known about whether subsidies operate in pollination systems. I studied wetland and dry meadow habitats in a subalpine system to assess whether wetlands provide neighboring pol

Age effects on maximum running speed (MRS) in yellow-bellied marmots (Marmota flaviventris) were examined to see whether this performance trait varied with age. Individuals were trapped in Tomahawk livetraps, then released and encouraged to run to burrows by yelling and chasing over varying distance

Nuisance blooms of the stalked diatom Didymosphenia geminata have become an increasing concern worldwide, yet little is known about their effect on stream food webs. We investigated the effects of D. geminata blooms on stream invertebrates of the East River in the western Rocky Mountains. Areas with

Several prey species have demonstrated a response to predator odors by altering their behavior, but few studies have explored the abilities of prey to discriminate between predator odors or to recognize novel predators. The olfactory abilities of yellow-bellied marmots (Marmota flaviventris) were st

POWER Steering Committee (People Opposing Water Exports) November 18th 1998

Reply from POWER (People Opposing Water Export Raids). November 18th 1998.

Donald L. Hazlett. 1998.

Angela M. Hutton-Howard. State of Colorado Department of Public Health and Environment. March 13, 1998.