Groundhog day is so silly. But as a groundhog scientist I love it anyway
Colorado's Joint Review Process: The AMAX Experience
The Colorado mountains include a mineral belt containing molybdenum, which is only slightly more common than gold. The Henderson Mine, which was built in the mid-1960s, was the largest private sector capital investment ever made in the State of Colorado. The Mount Emmons Mine, which will cost one bi
Scared and less noisy: glucocorticoids are associated with alarm call entropy
The nonlinearity and arousal hypothesis predicts that highly aroused mammals will produce nonlinear, noisy vocalizations. We tested this prediction by measuring faecal glucocorticoid metabolites (GCMs) in adult yellow-bellied marmots ( Marmota flaviventris ), and asking if variation in GCMs was posi
Trace metal geochemistry and hydrothermal alteration of three molybdenum-bearing stocks, Gunnison and Pitkin Counties, Colorado
decrease with depth.Correlation coefficients .calculatedusing samples from all three stocks show negative correlation between copper and molybdenum, zinc and molybdenum, and a slight (statistically insignificant) negative correlation between .lead and molybdenum.Data from this study along .withdata
Effects of Haemoparsite Infection and Food Supplementation on a High Elevation Passerine Bird
Strong circumstantial evidence from laboratory and theoretical studies suggests that sublethal parasite burdens can influence host population dynamics whether acting alone or in conjunction with reduced food availability. The significance of these effects has rarely been examined in natural environm
Life Histories Behavior and Space Partitioning in Selected Species of Western North American Plecoptera
Five species of stoneflies (Zapada haysi, Plumiperla diversa, Taenionema pacificum, Isoperla petersoni, Arcynopteryx compacta) from the North Slope and Interior of Alaska were examined for seasonal patterns of emergence of adults and growth of nymphs. Generally growth was retarded during the winter
The Ecology of Place
Studies of predation traditionally focus on how predators influence prey communities and prey population oscillations via mortality. Studies carried out for nearly 40 years in one place have enabled us to evaluate the gener- ality of this focus. Early observations in one high-altitude, rocky-bottom
Understanding how leaf endophytes are affected by climate change: Examining fungi in grass species with warming
Climate change is impacting ecological systems around the globe with much of current research characterizing direct plant and animal responses. However, there is a gap in our knowledge regarding the direct response of fungal symbionts to climate change. Horizontally transmitted leaf endophytes (type
Experimentally determined solute release rates from variably metamorphosed shale : implications for weathering in the East River watershed, CO.
This study investigates the variability in solute release rates from samples of shale and slate with variable lithology resulting from contact metamorphism. Mineral dissolution column experiments are used to test the hypothesis that solute release rates will vary with metamorphic grade of Mancos Sha
Holarctic Marmots as a Factor of Biodiversity
Circadian rhythms of body temperature were evident during deep torpor in 11 of 12 individuals. The mean period was 23.94 hours. Circadian cycles of oxygen consumption were apparent in Jive of 14 marmots. Arousal tended to occur during the increase phase of the cycle. This report may be the Jirst to