1,923 results — topic: RMBL & Gothic
Salinity Trends in Surface Waters of the Upper Colorado River Basin, Colorado
AbstractDissolved‐solids data collected in the Upper Colorado River Basin upstream from Cameo, Colorado, and in the Gunnison River Basin were analyzed for trends in flow‐adjusted dissolved‐solids concentrations and loads for water years 1970 to 1993, 1980 to 1993, and 1986 to 1993. Trend results for
Cumulative reproductive costs on current reproduction in a wild polytocous mammal
The cumulative cost of reproduction hypothesis predicts that reproductive costs accumulate over an individual's reproductive life span. While short-term costs have been extensively explored, the prevalence of cumulative long-term costs and the circumstances under which such costs occur alongside or
Ecosystem-size relationships of river populations and communities
Knowledge of ecosystem-size influences on river populations and communities is integral to the balancing of human and environmental needs for water. The multiple dimensions of dendritic river networks complicate understanding of ecosystem-size influences, but could be resolved by the development of
Spatiotemporal variation in survival of male yellow-bellied marmots
Variation in vital demographic (e.g., survival) rates of males can influence population dynamics, but the male segment of the population is frequently ignored in ecological studies of mammals. Using a multistate capturemark-recapture model and 44 years of data from 17 habitat patches, we investigate
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
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
Pre- and post-ingestive defenses affect larval feeding on a lethal invasive host plant
Abstract Evolutionary traps arise when organisms use novel, low‐quality or even lethal resources based on previously reliable cues. Persistence of such maladaptive interactions depends not only on how individuals locate important resources, such as host plants, but also the mechanisms underlying poo
Evolution of the alphaesterase duplication within the montana subphylad of the virilis species group of Drosophila
ABSTRACT Previous studies on linkage disequilibrium involving four tightly linked genes that code for the alpha-esterases of Drosophila montana suggest that these loci arose from a primitive esterase gene by gene duplication, Iollowed by tandem duplication (ROBERTS and BAKER 1973). We have examined
Plant sex and induced responses independently influence herbivore performance, natural enemies and aphid-tending ants
Plant sexual dimorphism and induced responses to herbivore damage independently influenced Herbivore performance and the composition of arthropod communities at higher trophic levels.
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
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
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
Writing an Effective Response to a Manuscript Review
An author’s response to referees’ comments is a key component of the peer review process that affects whether a manuscript is accepted or rejected, the speed at which a manuscript moves through the review process, the workload of editors and referees, and the quality and clarity of published science
The influence of river regulation and land use on floodplain forest regeneration in the semi‐arid upper Colorado River Basin, USA
AbstractFlow regulation effects on floodplain forests in the semi‐arid western United States are moderately well understood, whereas effects associated with changes in floodplain land use are poorly documented. We mapped land cover patterns from recent aerial photos and applied a classification sche
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
Colorado Green River Formation oil shale as viewed by pulsed n.m.r.
Using geochemical indicators to distinguish high biogeochemical activitiy in floodplain soils and sediments
This study develops a methodology to predict potential elevated rates of biogeochemical activity (microbial "hotspots") in subsurface environments by correlating microbial DNA and aspects of the community structure with the spatial distribution of geochemical indicators in subsURface sediments.
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
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
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
