7,660 results
Mammalian herbivores restrict the altitudinal range limits of three alpine grass species (transplant and herbivore exclusion experiment and demographic data from natural populations), West Elk Mountains, Colorado, USA 2015-2018
Though rarely experimentally tested, biotic interactions have long been hypothesized to limit low-elevation range boundaries of species. We tested the effects of herbivory on three alpine-restricted plant species by transplanting plants below (novel), at the edge (limit), or in the center (core) of
Rainbow trout diet and invertebrate drift data from 2012-2015 for the Colorado River, Grand Canyon, Arizona
These data were compiled to explore the foraging ecology of Rainbow Trout (Oncorhynchus mykiss) in the Colorado River, Grand Canyon, Arizona. These data represent samples characterizing the availability of drifting invertebrate prey (hereafter, drift) and use of these invertebrate prey by rainbow tr
Digital Data from Mineral Investigation of Sangre de Cristo Wilderness Study Area, Alamosa, Custer, Fremont, Huerfano, and Saguache Counties, Colorado, USA
This Data Release provides tabular and geospatial data digitized by the U.S. Geological Survey (USGS) from a U.S. Bureau of Mines (USBoM) report titled Mineral Investigation of Sangre de Cristo Wilderness Study Area, Alamosa, Custer, Fremont, Huerfano, and Saguache Counties, Colorado. The original p
NOAA/WDS Paleoclimatology - Woodhouse - Cochetopa Dome - PIPO - ITRDB CO594
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Tree Ring. The data include parameters of tree ring with a geographic location of Colorado
Late Quaternary Paleoecology of Two High-Elevation Mammal Species from the Southern Rocky Mountains, Colorado, USA
The Quaternary period has been characterized by global climate and environmental
Estimating the strength of consumptive and nonconsumptive interactions between trout and mayflies
The effect of ants on the population dynamics of <i>Hamiltonella defensa</i> a protective symbiont of aphids
Effects of altitude on co-flowering phenology in a montane wildflower community
Phenology is an important life history trait. As altitude increases in alpine environments, the growing season shortens and flowering phenology is more compressed. Co-flowering could occur more at higher elevations as a compensation for the shorter growing season. However, interspecific competition
Ecological interactions of the cadmium- and zinc-hyperaccumulating plant, Thlaspi caerulescens, and their implications for phytoremediation
Impact of mound-building ants on ecosystem properties create islands of fertility in alpine meadows
Effects of species composition change under experimental warming on soil microclimate in a montane meadow
The results of a long-term experimental warming study, in a montane meadow in the Rocky Mountains of Colorado, have shown that Artemisia tridentata (Common Sagebrush) is likely to increase in abundance under climate change, as perennial forb species decrease in abundance. This change in species comp
Biotic factors influencing feeding preferences of <i>Scaptomyza nigrita</i> (Drosphilidae) on its host plant, <i>Cardamine cordifolia</i> (Brassicaceae)
Hybridization between the invasives <i>Tragopogon pratensis</i> and <i>T. dubius</i> in the Gunnison Valley
Patterns of sap-foraging on willows (<i>Salix spp.i</i>) by a keystone species: the Red-naped Sapsucker (<i>Sphyrapicus nuchalis</i>)
The Red-naped Sapsucker (Sphyrapicus nuchalis) is a keystone species in montane/subalpine ecosystems of the Rocky Mountains of Colorado. By excavating nest cavities in aspen trees and sap wells in willow shrubs, sapsuckers indirectly provide nest holes and food, respectively, to many other species.
The effects of climate change on plant traits and fruiting phenology of <i>Delphinium nuttallianum</i>.
Factors that affect the repeatability of personality in yellow-bellied marmots, <i>Marmota flaviventris</i>
Animal personality is becoming increasingly relevant behavioral ecology because of its potential impact on reproductive success. Measuring personality however can be difficult because many factors, such as microhabitat variation and habituation, affect how an animal responds to a given test. Using n
Moist Forests
Barry C. Johnston, Laurie Huckaby, Terry J. Hughes, and Joseph Pecor. May 2001.
Letters of Support for the Upper Colorado River Endagered Fish Recovery Program and the San Juan River Basin Recovery Program
Scott McInnis, Barbara Cubin, Jim Matheson, Tom Tancredo, Diana DeGette, Tom Udall, James V. Hansen, Chris Cannon, Bob Schaffer, Mark Udall, Heather Wilson, Wayne Allard, Orrin G. Hatch, Jeff Bingaman. 2001.
Letter to Gunnison County Commissioners Re: for record of public hearing regarding the Gunnison County Airport Environmental Assessment from Judy Clark
Judy P Clark. February 5, 2001.
Gunnison, Colorado UMTRA Project Site
US DOE. March 2001.