Stare Decisis: Dueling Legal Interpretations of the Douglas County, Colorado Choice Scholarship Program
In the absence of incontrovertible performance data in support of, or opposition to, school vouchers, court decisions on their legality become increasingly important. Analysis of legal challenges provides a rich opportunity for scholars and policymakers to follow arguments for or against their posit
METHODS: Validating an immunoassay to measure fecal glucocorticoid metabolites in yellow-bellied marmots
Quantifying physiological stress in wild animals is essential for understanding their health, reproductive success, and survival in a variable environment. The yellow-bellied marmot (Marmota flaviventer) study at the Rocky Mountain Biological Laboratory near Crested Butte, Colorado, USA is the world
Effects of pre-dispersal selection on offspring growth and survival in <i>Erythronium grandiflorum</i>
AbstractEffects of pre‐seed‐dispersal processes on offspring vigor were examined in Erythronium grandiflorum using manipulations of the number of pollen donors contributing to the pollen pool and comparisons of means and variances in offspring growth measurements. There were no effects of the number
Comparative impacts of long-term trends in snowmelt and species interactions on plant population dynamics
Abstract Climate change can impact plant fitness and population persistence directly through changing abiotic conditions and indirectly through its effects on species interactions. Pollination and seed predation are important biotic interactions that can impact plant fitness, but their impact on pop
Interannual precipitation controls on soil CO2 fluxes in high elevation conifer and aspen forests
Long-term soil CO2 emission measurements are necessary for detecting trends and interannual variability in the terrestrial carbon cycle. Such records are becoming increasingly valuable as ecosystems experience altered environmental conditions associated with climate change. From 2013 to 2021, we con
Description and Origin of the Lower Part of the Mesaverde Group in Rifle Gap, Garfield County, Colorado
Observations of surface energy fluxes and meteorology in the seasonally snow-covered high-elevation East River watershed during SPLASH, 2021–2023
Paleoecology of Grand Staircase-Escalante National Monument, Utah: Human impacts on landscape and implications for resource management on the southern Colorado Plateau
The heritability of fear: decomposing sources of variation in marmot flight initiation distance
Mineralogy of Tuckers Tunnel: Tuckerville, Hinsdale County, Colorado
Environmental drivers of plant community composition in subalpine and alpine fens of the San Juan Mountains, Colorado, USA
Fens are a widely distributed type of wetland worldwide and offer vital habitat for plant and animal species in the Rocky Mountains. Fens support a high biodiversity of flora and fauna given the proportionally small space they occupy on the landscape, often serving as refugia for disjunct plant spec
Early Records of Gilpin County, Colorado
Minerals of the Gilman District and Eagle Mine:<i>Eagle County, Colorado</i>
(2003). Minerals of the Gilman District and Eagle Mine: Eagle County, Colorado. Rocks & Minerals: Vol. 78, No. 5, pp. 298-323.
Connoisseur's Choice: Enargite, Longfellow Mine, Red Mountain District, San Juan County, Colorado
Are all things beautiful? Are all types equally beautiful when we abstract from our practical prejudices? If the reader gives his assent … we must declare that no object is essentially ugly. —Georg...
Two sides of the same wing: ventral scales enhance dorsal wing color in the butterfly Speyeria mormonia
Biological visual signals are often produced by complex interactions between light-absorbing and light-scattering structures, but for many signals, potential interactions between different light-interacting components have yet to be tested. Butterfly wings, for example, are thin enough that their tw
Rising Temperatures Reduce Colorado River Flow
Hotter conditions have played a much greater role in reducing flow during the ongoing Millennium Drought than in a mid-20th century drought.
How strong is Snow? Spatial correlations of snowpack load bearing capacity and micromechanics from NASA SnowEx SnowMicroPen Data at Grand Mesa, Colorado
Phylogeny does not predict the outcome of heterospecific pollen–pistil interactions in a species-rich alpine plant community
Our results show that even in communities where HPT is common, pre-zygotic post-pollination mechanisms do not provide strong barriers to interspecific fertilization. HPT can result in the loss of ovules even between highly diverged plant species.
Steam Navigation on the Colorado River
Blocks X and Y
which, following Aldenderfer (2006), we define as locations at elevations greater than 2,500 meters above sea level (e.g.,