7,660 results

Dataset

Sub-Basin Delineation for the Upper East River, Colorado, United States.

Upper East sub-basins are delineated as area contributing flow to SFA 2016 stream gage locations. Shapefile attributes include sub-basin ID, name, area (m2 and km2) and codes for spatial contributions to EBC and PH used by Carroll et al. (2018). Geospatial reference is UTM 1983 zone 13. JPEG image p

Carroll R, Bill M, Dong W2021DOI: 10.21952/WTR/1508403
Dataset

Annual floodplain sediment deposition recorded using feldspar clay marker horizons along the East River, Colorado, 2015-2017.

White feldspar clay was placed along 24 transects defining a ~9-km long study reach along the meandering snowmelt-dominated East River in Colorado, USA. Feldspar markers horizons were placed in the fall of 2015 and 2016 along transects with the space between them increasing with distance from the ch

Sutfin N, Rowland J2021DOI: 10.15485/1577279
Dataset

Sample Collection Metadata for Soil Cores from the East River Watershed, Colorado collected in 2017.

This data package contains sample collection metadata for soil cores from the East River Watershed in Colorado used in biogeochemical analyses by the Watershed Function SFA. Soil cores were collected seasonally during autumn, winter, snowmelt, and spring at a predominately montane meadow, high altit

Sorensen P, Brodie E, Beller H2021DOI: 10.21952/WTR/1573029Cited 2 times
Dataset

Depth and elevation of floodplain fine sediment along the East River near Crested Butte, Colorado measured in 2016 and 2017.

The depth of floodplain fine sediment was measured at 1,601 points along the East River near Crested Butte, Colorado spanning a study reach approximately 800 m in length in 2016 and 2017. These depths are being used to estimate the volume of floodplain sediment present along the study reach, convert

Sutfin N, Rowland J2021DOI: 10.15485/1574502
Student Paper

Consistency of individual foraging and vigilance patterns in Yellow-Bellied marmots

Animals frequently exhibit variation in their behavior. In the past this variation has been treated as statistical error, but research has identified correlated behaviors across contexts, referred to as behavioral syndromes. We focused on yellow-bellied marmots (Marmota flaviventris) and examined vi

Trojan R. J.2005
Student Paper

Effects of climate change on growth and seedling establishment of young lodgepole pine

Anthropogenically induced climate change is expected to effect numerous climatic alterations pertinent to ecosystems, including increased mean global temperature and altered precipitation regimes. High-elevation ecosystems are especially sensitive to climatic changes because slight fluctuations in f

Perkins T. A.2005
Student Paper

Effects of Interspecific Pollen Transfer (IPT) in a Specialist and a Generalist Flower

Muir C. D.2005
Student Paper

Nectar robbing in Ipomopsis aggregata: does high nectar production confer tolerance?

McCutcheon M. L.2005
Student Paper

The effects of the invasive plant <i>Linaria vulgaris</i> on native plant fitness and pollinator behavior

The invasion of the European perennial Linaria vulgaris to the alpine environment of Colorado may lead to competition for natural resources, space, and pollinators with native species. I measured the effects on fitness of L. vulgaris on three plant species native to Colorado, using both hand-pollina

Lei S.2005
Student Paper

Antipredatory response of mule deer (<i>Odocoileus hemionus</i>) to predator urines

Auditory, visual, and olfactory cues of predator presence create a landscape of fear for prey animals. Prey can respond to predation risk perceived from these cues by increasing vigilance, increasing group size, altering habitat use, and reducing activity times. State of the animal and predator type

Lee T. N.2005
Student Paper

The Effect of Ant Colony Proximity on Membracid Survivorship

Crain P. R.2005
Student Paper

Intraspecific signaling function of Crown Coloration in Mountain White-Crowned Sparrows

There is evidence showing that large differences between age/sex categories in crown morphology of white-crowned sparrows are used to signal status. We investigated the role of more subtle crown characteristics, specifically the proportion of the crown that is white, as a signal used to mediate aggr

Cohen D.2005
Student Paper

the influence of red-naped sapsuckers on willow bird communities

In subalpine Colorado ecosystems, red-naped sapsuckers feed by excavating sap wells in shrubby willow branches. Many species of insects, birds, and mammals are known to feed from this sap. Previous studies on avian sap robbers suggest these sap wells may have a direct effect on bird communities. Fur

Clark E. C.2005
Student Paper

The effects of Castilleja miniata's parasitic relationship with Delphinium nuttallianum on pollinator visitation and pollination success

Castilleja miniata is a hemiparasite capable of taking up chemical toxins from its host plant. A unique relationship is C. miniata’s parasitism on Delphinium nuttallianum (which contains alkaloids); alkaloids from D. nuttallianum are taken up into C. miniata’s nectar which could negatively affect C.

Brennan J. C.2005
Student Paper

The Timing of Floral Color Change in Lupinus argenteus

This paper describes the timing of floral color change with Lupinus argenteus and the behavior of pollinator visitation to manipulated treatments. In theory plants my benefit from color change in two ways. One way is to direct pollinators to rewarding flowers. This may increase the foraging efficien

Braucher L.2005
Student Paper

Impacts of Mule Deer Herbivory on Herbaceous Vegetation in the Gothic Area, with Focus on Aquilegia coerulea

The impacts of growing deer populations upon biodiversity have caused concern for ecologists since it is speculated that certain species of herbs are targeted and over abundantly browsed. This study investigated deer abundance as well as intensity of deer browsing of herbaceous plants inside and out

Arozqueta R.2005
Document

Proceedings: Using Seeds of Native Species on Rangelands

Nancy L. Shaw, Bruce A. Roundy. 1997.

1997
Document

People, Places, and Partnerships: A Progress Report on Community Based Environmental Protection

EPA July 1997

1997
Document

Native Grasses

Larry K. Holzworth, Ray W. Brown, 1997, U.S Department of Agriculture

1997
Document

National Water-Quality Assessment (NAWQA) Program Bibliography

National Water-Quality Assessment Bibliography, November 10, 1997

1997