816 results — topic: Alpine & Subalpine Ecology
Kinetics Data of Iron(II), Manganese(II), Dissolved Organic Carbon and Nitrate from Batch Incubation Experiments Using Hyporheic Sediments from the East River Watershed, Colorado.
Hyporheic zones act as critical ecological links between terrestrial and aquatic systems where redox-sensitive metals of iron (Fe) and manganese (Mn) significantly impact nutrient cycling and water quality. In order to understand the production, release and speciation of Fe(II) and Mn(II) in groundw
Kinetics Data of Iron(II), Manganese(II), Dissolved Organic Carbon and Nitrate from Batch Incubation Experiments Using Hyporheic Sediments from the East River Watershed, Colorado.
Hyporheic zones act as critical ecological links between terrestrial and aquatic systems where redox-sensitive metals of iron (Fe) and manganese (Mn) significantly impact nutrient cycling and water quality. In order to understand the production, release and speciation of Fe(II) and Mn(II) in groundw
Kinetics Data of Iron(II), Manganese(II), Dissolved Organic Carbon and Nitrate from Batch Incubation Experiments Using Hyporheic Sediments from the East River Watershed, Colorado.
Hyporheic zones act as critical ecological links between terrestrial and aquatic systems where redox-sensitive metals of iron (Fe) and manganese (Mn) significantly impact nutrient cycling and water quality. In order to understand the production, release and speciation of Fe(II) and Mn(II) in groundw
Life histories of the perennial geophyte Erythronium grandiflorum (Liliaceae) in Colorado subalpine transplant garden from annual measurements, 1991 onward
In an outdoor garden at Irwin, Colorado, we established glacier lily plants in open-bottomed PVC pots that protected them from gopher attack. The initial cohorts were excavated from field sites as mature corms of unknown age. Later cohorts were grown from seed, so their ages are known. Each spring s
Basic High-resolution Landcover Map for the Upper East River Domain
This is a landcover map derived from the 2018 NEON AOP dataset for the upper east river. 1=needle-leaf trees and shrubs 2=deciduous trees and shrubs 3=deciduous meadow and subshrub ( 0.5m) 4=bare rock, soil, gravel and asphalt 5=water 6=snow 7=buildings Source data includes NEON LiDAR and imaging sp
Conifer water use patterns in the East River Watershed, Colorado US, based on stable water isotopes and cellulose isotopes. Space and Time Dynamics of Transpiration in the East River Watershed: Biotic and Abiotic Controls
This data package contains a series of datasets aimed at understanding the seasonal origins of water used by the dominant conifer species, Abies lasiocarpa and Picea engelmannii, in the East River Watershed. There is a distinct difference in the stable isotopic ratio of summer rain and snowpack and
Leaf mass per area and leaf water content measurements from field survey in association with NEON AOP survey, East River, CO 2018. A Multiscale Approach to Modeling Carbon and Nitrogen Cycling within a High Elevation Watershed.
Leaf area, wet, and dry weights for leaf samples from sites where field sampling was conducted during the 2018 National Ecological Observatory Network (NEON) Airborne Observation Platform (AOP) imaging spectroscopy and lidar surveys in Gunnison County, Colorado. The sampling sites were located acros
Plant distributions along alpine moisture gradients: the roles of competition and physiological tolerances
The use of the stonefly, Pteronarcys californica Newport, as a measure of biologically available cadmium in a high altitude river system, Colorado, USA
The use of the stonefly, Pteronarcys californica Newport, as a measure of biologically available cadmium in a high altitude river system, Colorado, USA
Facultative Metamorphosis in a Series of High Altitude Fossil Populations of Ambystoma tigrinum (Irvingtonian: Alamosa County, Colorado)
CHESSON, P. 1978. Predator-prey theory and variability. Ann. Rev. Ecol. Syst. 9:323-347. CURIO, E. 1976. The ethology of predation. Springer-Verlag, New York. DILL, L. M. 1983. Adaptive flexibility in the foraging behavior of fishes. Can. J. Fish. Aq. Sci. 40:398408. DUNBRACK, R. L., AND L. M. DILL.
THE USE OF THE STONEFLY, PTERONARCYS CALIFORNICA NEWPORT, AS A MEASURE OF BIOLOGICALLY AVAILABLE CADMIUM IN A HIGH-ALTITUDE RIVER SYSTEM, GUNNISON COUNTY, COLORADO (SOFT WATER, ACID PRECIPITATION, UPTAKE, CONCENTRATE, RISK).
The effect of nectar guides on pollinator preference: experimental studies with a montane herb
In all of 16 experimental replicates discrimination against albinos was reduced or eliminated after painting, and albino handling times declined toward values for blue-flowered inflorescences, indicating that an inferior nectar guide increases the energetic cost of foraging at albino.
Airborne pollen and mold spores in a subalpine environment
Alpine aberrations in the river continuum concept
Growth rate respnse to intraspecific and interspecific competition in two alpine annuals
An alpine test of the river continuum concept
Population structure and recommendations for conservation of the narrowly endemic alpine butterfly Boloria acrocnema (Lepidoptera: Nymphalidae)
Mark-recapture data indicate that daily population sizes are low, most adults remain in residence at the colony only a few days, and there are age-specific sexual differences in movement, with older females perhaps leaving the colony site.
Some observations on spatial distribution in a montane population of Euphydryas editha
Counts of montane Euphydryas editha along transects at Almont Summit, Colorado, show that males form a dense aggregation along a ridgetop with an estimated 30:1 (male:female) sex ratio. Fertilized females showed preference for subsites below the ridgetop at least as rich in oviposition plants but le