1,923 results — topic: RMBL & Gothic ·
The timing of reproduction is responding plastically, not genetically, to climate change in yellow-bellied marmots (Marmota flaviventer)
With global climates changing rapidly, animals must adapt to new environmental conditions with altered weather and phenology. The key to adapting to these new conditions is adjusting the timing of reproduction to maximize fitness. Using a long-term dataset on a wild population of yellow-bellied marm
Abiotic and biotic factors influencing western United States coniferous forests
In the next decade, climate models suggest that global temperatures will continue to rise. In the western United States, increases in temperatures and changes in precipitation patterns will escalate the risk of drought conditions. These potentially warmer, drier conditions could induce physiological
Effects of an introduced mustard, Thlaspi arvense, on soil fungal communities in subalpine meadows
Comparative life-cycle analyses reveal interacting climatic and biotic drivers of population responses to climate change
Responses of natural populations to climate change are driven by how multiple climatic and biotic factors affect survival and reproduction, and ultimately shape population dynamics. Yet, despite substantial progress in synthesizing the sensitivity of populations to climatic variation, comparative st
Geology and mineral resource potential of the Black Ridge Canyon wilderness study area, Mesa County, Colorado : (GEM phase 2) /
Rock samples from the WSA were also low in elements associated with mineralized systems.
High-discharge disturbance does not alter the seasonal trajectory of nutrient uptake in a montane stream
Improving plant DNA metabarcoding accuracy with ecological filters and Angiosperms353: Field and pollen microscopy validation
Bee phenological distributions predicted by inferring vital rates
AbstractHow bees shift the timing of their seasonal activity (phenology) to track favorable conditions influences the degree to which bee foraging and flowering plant reproduction overlap. While bee phenology is known to shift due to interannual climatic variation and experimental temperature manipu
A Winter Operational Cloud Seeding Program: Upper Gunnison River Basin, Colorado
A winter orographic cloud seeding program has been conducted in the Gunnison, Colorado region for the past eight winter seasons. The intended target area is elevations above 9,000 feet MSL that provide streamflow to Blue Mesa Resevoir located in western Gunnison County. The goal of this operational
Measuring occupation span at two stone circle sites in Larimer County, Colorado
Stone circle sites are notorious for low artifact frequencies. This deters archaeological study because low artifact frequencies are thought to limit research potential. Two stone circle sites, Killdeer Canyon (5LR289) and T-W Diamond (5LR200) offer insight into short-term habitations, despite their
Climate mediates the trade-offs associated with phenotypic plasticity in an amphibian polyphenism
Polyphenisms occur when phenotypic plasticity produces morphologically distinct phenotypes from the same genotype. Plasticity is maintained through fitness trade-offs which are conferred to different phenotypes under specific environmental contexts. Predicting the impacts of contemporary climate cha
Ponderosa pine dwarf mistletoe loss assessment survey on National Forest lands in Colorado
During 1981-82, a roadside/plot survey was conducted on National Forest lands in Colorado to estimate annual merchantable cubic-foot volume loss caused by ponderosa pine dwarf mistletoe in ponderosa pine.This survey indicated that 18 percent of the type was infested.The total annual loss of ponderos
Reports on the damage by destructive locusts during the season of 1891
Sir : I beg to submit herewith a report of my observations on the destructive lo- custs of the country during the current year, a work which has engaged, as you already know, the greater portion of my time during the past summer.While oc- cupied with these investigations portions of Colorado, Wyomin
Developing best management practices for salinity control in Grand Valley, Colorado
The development of ‘best management practices’ (BMP) for controlling the salinity associated with irrigation return flows involves (1) delineation of the hydro‐salinity systems, (2) linkage of salinity impacts and irrigation practices, and (3) determining the least cost or most beneficial program fo
Initial partial cutting in old-growth spruce-fir /
Interim guidelines are provided to aid the forest manager in developing alternatives to clearcutting in old-growth spruce-fir forests in Colorado and southern Wyoming. Included are partial cutting practices for different stand conditions and windfall and insect susceptibility that should maintain co
Differences in macroinvertebrate community structure in streams and rivers with different hydrologic regimes in the semi-arid Colorado Plateau
Do microorganisms obey macroecological rules?
Understanding the factors controlling the relative abundance, distribution, and diversity of organisms is a fundamental challenge in ecology. For plants and animals, macroecological rules have been developed that describe these large-scale distributional patterns and attempt to explain the underlyin
Stratigraphy and Structure of Tertiary Rocks in Central South Park, Park County, Colorado
ABSTRACT: Tertiary rocks more than 5,000 feet thick outcrop in central South Park, Colorado; they include continental sediments and volcanics. These rocks have been previously divided into several formations, from youngest to oldest: Denver Formation (Eocene), and lower andesite of the Thirtynine Mi
Decomposing an elevational gradient in predation by insectivorous birds
Abstract Insectivorous birds have ecologically important effects on prey abundance, behavior, and evolution, and through top‐down control, birds indirectly reduce herbivory and promote plant growth. While several studies sought to characterize biogeographic patterns in top‐down control by birds, var