Abstract Species that hibernate live longer than would be expected based solely on their body size. Hibernation is characterized by long periods of metabolic suppression (torpor) interspersed by short periods of increased metabolism (arousal). The torpor-arousal cycles occur multiple times during hi

Climate change is disrupting floral traits that mediate mutualistic and antagonistic species interactions. Plastic responses of these traits to multiple shifting conditions may be adaptive, depending on natural selection in new environments. We manipulated snowmelt date over three seasons (3-11 d ea

The phenology of vegetation, namely leaf-out and senescence, can influence the Earth’s climate over regional spatial scales and long time periods (e.g., over 30 years or more), in addition to microclimates over local spatial scales and shorter time periods (weeks to months). However, the effects of

Understanding connectivity between the soil and deeper bedrock groundwater is needed to accurately predict a watershed’s response to perturbation, such as drought. Yet, the bedrock groundwater dynamics in mountainous environments are typically under-constrained and excluded from watershed hydrologic

Plants produce an array of defensive compounds with toxic or deterrent effects on insect herbivores. Pollen can contain relatively high concentrations of such defense compounds, but the causes and consequences of this enigmatic phenomenon remain mostly unknown. These compounds could potentially prot

The Early and Middle Proterozoic rocks in the Needle Mountains include three distinct rock sequences (1) multiply deformed bimodal metavolcanic rocks, related sedimentary rocks, and plutonio units, all metamorphosed to medium grade; (2) multiply deformed clastic sedimentary rocks metamorphosed to lo

On the Ground To be successful, producers must interpret environmental stimuli and respond with management actions that help match their production operations to the ecosystem services they depend on. Climate change, and the increased variability that will likely result, may lessen the relevance of

Abstract. Estimating snow mass in the mountains remains a major challenge for remote-sensing methods. Airborne lidar can retrieve snow depth, and some promising results have recently been obtained from spaceborne platforms, yet density estimates are required to convert snow depth to snow water equiv

Open top chambers (OTCs) are a popular method for studying the biological effects of climate change through passive heating, but their effects on biotic interactions are poorly understood, especially for pollination. Here we use the subalpine plants Delphinium nuttallianum and Potentilla pulcherrima

In the early 1890s, Logan County, Colorado farmer John Frost was digging a lateral line from an irrigation ditch to his field when he encountered probable human bones. Associated with these skeletal remains were three large Clovis chipped stone preforms or projectile points, and at minimum five hema

Since the Roberts Ranch Buffalo Jump (5LR100) was first reported on in 1971, there has been a great deal of research on bison kills and faunal analysis, as well as advancements in analytic techniques, that can now be applied to the collection from the site. Much of the collection was reported in a t

Research Article| August 01, 1945 STRUCTURE OF THE RED CREEK AREA, FREMONT COUNTY, COLORADO ALBERT R GLOCKZIN; ALBERT R GLOCKZIN 3219 KEATS STREET, SAN DIEGO, CALIF.; SCHOOL OF GEOLOGY, LOUISIANA STATE UNIVERSITY, BATON ROUGE, LA. Search for other works by this author on: GSW Google Scholar CHALMER

The ability to inhibit Bacillus cereus decreased in extracts from plants harvested from high light environments, which follows plant defense theory, and harvest sustainability in L. porteri is equivocal among the light environments examined in this study, although some medicinal properties vary.

Psychological stress induced by exposure to predators has complex effects on the behaviour and physiology of prey species. This includes potential influences on gene expression mediated via stress-responsive physiological pathways such as the sympathetic nervous system and hypothalamus–pituitary–adr

AbstractIron geochemistry of the sediments and interstitial waters of the Roaring River alluvial fan in the Rocky Mountain National Park, Colorado was studied using a chemical equilibria approach. Large concentrations of colloidal Fe in the filterable Fe of the interstitial waters results in conside

material.It is in good demand at prices up to $x2 per unit of tungsten-trioxide, making 70 per cent.ore worth $840 per ton.The following paragraphs describe some of these gold and tungsten deposits in the southwestern part of the county, in the vicinity of Eldora and Nederland, from data obtained du

necessary for the appear- ance of a new American Bird-book.Mine must be that the only complete work on Colorado Birds is that of Cooke, which, though brought up-to-date by successive supplements, is now out of print and very difficult to obtain.Moreover, Cooke gives no descriptions or keys, so that