2,568 results — type: Journal Article ·
Colorado Green River Formation oil shale as viewed by pulsed n.m.r.
Specific-gene studies of evolutionary mechanisms in an age of genome-wide surveying
The molecular tools of genomics have great power to reveal patterns of genetic difference within or among species, but must be complemented by the mechanistic study of the genetic variants found if these variants’ evolutionary meaning is to be well understood. Central to this purpose is knowledge of
APPRAISAL OF RIDGWAY AND GUNNISON “TILLITES,” SOUTHWESTERN COLORADO
Research Article| March 01, 1957 APPRAISAL OF RIDGWAY AND GUNNISON "TILLITES," SOUTHWESTERN COLORADO FRANKLYN B VAN HOUTEN FRANKLYN B VAN HOUTEN PRINCETON UNIVERSITY, PRINCETON, N. J. Search for other works by this author on: GSW Google Scholar Author and Article Information FRANKLYN B VAN HOUTEN PR
Habitat preference of an herbivore shapes the habitat distribution of its host plant
Plant distributions can be limited by habitat-biased herbivory, but the proximate causes of such biases are rarely known. Distinguishing plant-centric from herbivore-centric mechanisms driving differential herbivory between habitats is difficult without experimental manipulation of both plants and h
Heritable variation in the timing of emergence from hibernation
Global climate change is shifting many species’ phenology and has created a number of key mismatches that threaten population persistence. Phenotypically plastic individuals have the ability to adjust their behaviour in response to environmental change. While phe- notypic plasticity may serve as a b
Indirect fitness benefits do not compensate for the loss of direct fitness in yellow-bellied marmots
Abstract The contribution of indirect fitness to inclusive fitness is expected to increase as the reproductive skew increases, with indirect fitness being the only component of inclusive fitness of sterile individuals in eusocial species. However, the relative contribution of indirect fitness to inc
Climate and multiple dimensions of plant diversity regulate ecosystem carbon exchange along an elevational gradient
Abstract The impacts of warming on communities and ecosystems are predicted to be significant in mountain ecosystems because physiological processes, including rates of carbon (C) cycling, are often more temperature‐sensitive in colder environments. Plant biodiversity can also influence C exchange,
CLAST‐LADEN MELT‐ROCK FRAGMENT IN THE ADAMS COUNTY, COLORADO, H5 CHONDRITE
The Adams County, Colorado, H5 chondrite contains a lithic fragment, 1 cm in size, that is texturally and mineralogically quite different from the chondritic host. It is composed of: a groundmass of fine‐grained euhedral to subhedral olivine (3–15 μm) and interstitial glass enclosing larger olivine
Evolution and genomic basis of the plant penetrating ovipositor: a key morphological trait in herbivorous Drosophilidae
Herbivorous insects are extraordinarily diverse, yet are found in only one-third of insect orders. This skew may result from barriers to plant colonization, coupled with phylogenetic constraint on plant-colonizing adaptations. The plant-penetrating ovipositor, however, is one trait that surmounts ho
Predicting regime shifts in flow of the Gunnison River under changing climate conditions
Key Points Projected Gunnison River Basin hydrology is fitted to a gamma distribution Changes to wet and dry regime characteristics under climate change are expected Changing regime characteristics may influence future reservoir operations
Metamunirite, a new anhydrous sodium metavanadate from San Miguel County, Colorado
AbstractMetamunirite, β-NaVO3, is found in cavities in sandstone in San Miguel County, Colorado, occurring as fine, fibrous, colourless needles. X-ray powder and precession photographs show the crystals to be orthorhombic, space group Pnma, with a = 14.134(7), b = 3.648(2), c = 5.357(2) Å. They are
Carbon Dioxide Concentrations and Efflux from Permanent, Semi-Permanent, and Temporary Subalpine Ponds
Small ponds account for a disproportionately high percentage of carbon dioxide emissions relative to their small surface area. It is therefore crucial to understand carbon flow in these ponds to refine the current global carbon budget, especially because climate change is affecting pond hydrology. H
From Insects to Frogs, Egg–Juvenile Recruitment Can Have Persistent Effects on Population Sizes
Understanding what regulates population sizes of organisms with complex life cycles is challenging because limits on population sizes can occur at any stage or transition. We extend a conceptual framework to explore whether numbers of successfully laid eggs determine densities of later stages in ins
An Annotated List of the Birds of Mesa County, Colorado
Do birds differentiate between white noise and deterministic chaos?
AbstractNoisy, unpredictable sounds are often present in the vocalizations of fearful and stressed animals across many taxa. A variety of structural characteristics, called nonlinear acoustic phenomena, that include subharmonics, rapid frequency modulations, and deterministic chaos are responsible f
Marmots do not consistently use their left eye to respond to an approaching threat but those that did fled sooner
In many vertebrates, the brain's right hemisphere which is connected to the left visual field specializes in the processing of information about threats while the left hemisphere which is connected to the right visual field specializes in the processing of information about conspecifics. This is ref
Does locomotor ability influence flight initiation distance in yellow-bellied marmots?
Flight initiation distance (FID) is the distance between a potential threat and the point at which a potential prey flees. Animals may modify their FID to compensate for increased risk generated by external/extrinsic factors such as habitat type, visibility, group size, time of year, predator-approa
Differential success of pollen donors in a self-compatible lily
Virtually the Same? Evaluating the Effectiveness of Remote Undergraduate Research Experiences
In-person undergraduate research experiences (UREs) promote students’ integration into careers in life science research. In 2020, the COVID-19 pandemic prompted institutions hosting summer URE programs to offer them remotely, raising questions about whether undergraduates who participate in remote r