2,568 results — type: Journal Article ·
The Wilson Creek Field, Rio Blanco County, Colorado
Abstract The Wilson Creek field is situated in mountainous terrain of Rio Blanco County, Colo. It was discovered in early 1938 and produces from both the Morrison and Sundance sands of Jurassic age. The underlying Sundance reservoir is fully developed with 18 wells; no dry holes have been drilled. T
Increased temperature and CO2 induce plasticity and impose novel selection on plant traits
Climate change is simultaneously increasing atmospheric carbon dioxide concentrations ([CO2]) and temperatures. We conducted a multi-factorial growth chamber experiment to examine how these climate change factors interact to influence the expression of ecologically relevant morphological and phenolo
On the similarity of hillslope hydrologic function: a clustering approach based on groundwater changes
Abstract. Hillslope similarity is an active topic in hydrology because of its importance in improving our understanding of hydrologic processes and enabling comparisons and paired studies. In this study, we propose a holistic bottom-up hillslope clustering based on a region's integrative hydrodynami
Dispersal of the golden-mantled ground squirrel (Callospermophilus lateralis)
Dispersal 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 thought to be conditional; the potential disperser assesses prospects for su
Intraspecific body size variation across distributional moments reveals trait filtering processes
Natural populations are composed of individuals that vary in their morphological traits, timing and interactions. The distribution of a trait can be described by several dimensions, or mathematical moments-mean, variance, skew and kurtosis. Shifts in the distribution of a trait across these moments
The (surprising) importance of males in a matrilineal society: behavioural insights from a topological knockout study
Social group structure often has consequences for individual fitness and ecological and evolutionary processes, but group structure is not fixed because of demographic processes: individuals die, disperse or are recruited into social groups. Thus, it is important to understand how demographic social
Differences in individual flowering time change pollen limitation and seed set in three montane wildflowers
Our study shows that variation in individual phenology affects fecundity in three phenologically distinct montane species, and that pollen limitation may be more influential than conspecific density. Our results suggest that individual-level changes in phenology are important to consider for underst
A List of the Birds of the wet Mountains, Huerfano County, Colorado
Field germination and survival of experimentally introduced metal hyperaccumulator Noccaea caerulescens (Brassicaceae) across a soil metal gradient
Noccaea caerulescens (formerly Thlaspi caerulescens, Brassicaceae) is a model species for studying the genetics and physiology of metal hyperaccumulation and is economically valuable for phytoremediation. Its growth and survival under varying natural conditions remain relatively unstudied but such i
Results of a paleobotanical study of the coal-bearing rocks of the Raton Mesa region of Colorado and New Mexico
On alunite, from Red Mountain, Ouray County, Colorado
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
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
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
Gravity meter survey of the Wellington field, Larimer County, Colorado
Abstract The results of a gravity meter survey across the Wellington Field, Larimer County, Colorado, both before and after elimination of the regional effect is presented in relation to the subsurface structure of the field. The method of eliminating the regional effect is shown.This information is
Molecular diversity of dissolved organic matter reflects macroecological patterns in river networks
Intraspecific body size variation across distributional moments reveals trait filtering processes
Natural populations are composed of individuals that vary in their morphological traits, timing and interactions. The distribution of a trait can be described by several dimensions, or mathematical moments-mean, variance, skew and kurtosis. Shifts in the distribution of a trait across these moments
The Colorado River Basin
Costly calling: Marmots who alarm call at higher rates are less likely to survive the summer and live shorter lives
Emitting alarm calls may be costly, but few studies have asked whether calling increases a caller's risk of predation and survival. Since observing animals calling and being killed is relatively rare, we capitalized on over 24,000 h of observations of marmot colonies and asked whether variation in t