Hybridization may uncouple adaptive trait combinations that are present in parental species. I studied variation in flower color and reward quality across a hybrid zone of Ipomopsis aggregata and I. tenuituba. Individuals from hybrid populations showed considerable variation in flower color using co

Here we review next-generation questions in the study of plant–pollinator interactions mediated by floral volatiles, and the potential for renewed collaboration between biologists and chemists in answering such questions.

During the period 1970 to 1976, three stockwork molybdenite deposits were discovered beneath Mt. Emmons, a prominent peak of the Elk Mountains in the central portion of the Colorado mineral belt. Two of the deposits are below Redwell Basin on the northwestern side of the mountain and the third, and

Abstract Inland waters are an important component of the global carbon budget. However, our ability to predict carbon fluxes from stream systems remains uncertain, as p CO 2 varies within streams at scales of 1–100 m. This makes direct monitoring of large‐scale CO 2 fluxes impractical. We incorporat

Journal Article Notes on the Ecology of Weasels in Gunnison County, Colorado Get access Horace F. Quick Horace F. Quick Univ. of Maine, Orono, Maine Search for other works by this author on: Oxford Academic Google Scholar Journal of Mammalogy, Volume 32, Issue 3, August 1951, Pages 281–290, https://

The physiology of torpor in hummingbirds is well known from laboratory studies, but we still do not know when or how often this means of energy conservation is used in nature, whether regularly (the "routine" hypothesis) or only in response to inadequate food intake (the "emergency-only" hypothesis)

Minimum water requirements of non-torpid golden-mantled ground squirrels and chipmunks and Eutamias change throughout the annual cycle from a high in the reproductive season to a low in the hibernating season.

Yellow-bellied marmots minimize thermoregulatory costs by concentrating activity at times when the microclimate is favorable, by tolerating hyperthermia at high TA in the field, and by having a conductance lower than that predicted from body size.

At least 20 species of Trichomycetes (Zygomycotina) were dissected from the hindguts and peritrophic membranes of larval Diptera (Simuliidae, Chironomidae), Ephemeroptera, and Plecoptera in two high-altitude streams, and the trichomycete species diversity in the two streams was compared. Periodic sa

This study tests the hypothesis that selection should result in a positive correlation between numbers of oocytes produced and available oviposition time, in order to avoid wasting nutrients through the formation of unused oocytes in Colias philodice eriphyle Edwards.

Reproduction in a population of marked pikas (Ochotonaprinceps) was observed over a 3-year period in the Rocky Mountains of Colorado. Pikas were seasonally polyestrous; all adult females initiated two litters each summer. However, most females (24 of 25) weaned only a single litter. The number of su

Lead contamination in soils and sediments is a major threat to water quality. In surface and near-surface environments, Pb is not redox active; however, common Pb hosts, including Fe(III)-(hydr)oxides and sulfides, dissolve and precipitate as redox conditions change. Dissolution of Pb hosts may rele

Abstract Watersheds are important suppliers of freshwater for human societies. Within mountainous watersheds, microbial communities impact water chemistry and element fluxes as water from precipitation events discharge through soils and underlying weathered rock, yet there is limited information reg

This work presents updated hydrologic projections for the Upper Colorado River Basin (UCRB) using downscaled (approximately 12 km) General Circulation Model (GCM) output from Coupled Model Intercomparison Project – Phase 5 (CMIP5) with a comparison to CMIP3 GCMs. We use the Soil and Water Assessment

Wetlands host ∼20% of terrestrial organic carbon and serve as a major sink for atmospheric carbon. Anoxic soils and sediments accrue soil organic carbon (SOC) partly by hampering the activity of extracellular oxidative enzymes that break down phenolic polymers. Upon aeration, fungal-driven oxidative

Air, nest and body surface temperatures, air velocity, and hemispherical radiation data were used with published values for evaporation and metabolism to estimate the total heat loss of the incubating female when air temperatures were 0–4·6°C.

Machine learning can provide sustainable solutions to gap-fill groundwater (GW) data needed to adequately constrain watershed models. However, imputing missing extremes is more challenging than other parts of a hydrograph. To impute missing subhourly data, including extremes, within GW time-series d

The numbers of flower parts are considered among the most constant angiosperm characters However, nearly 33% of the plants in 13 populations of Ipomopsis aggregata in Colorado had at least one anomalous flower, and almost 10% of the flowers displayed abnormal merism (abnormal floral formulas) Floral

The relative contributions of recruitment and post-recruitment processes are pivotal to understanding the mechanisms influencing the population dynamics of organisms. We estimated recruitment by oviposition to populations of the mayfly Baetis bicaudatus in multiple streams of one drainage basin in w