816 results — topic: Alpine & Subalpine Ecology
Frost sensitivity of leaves and flowers of subalpine plants is related to tissue type and phenology
Harsh abiotic conditions such as low temperatures that lead to spring and summer frost events in high-elevation and high-latitude ecosystems can have strong negative consequences for plant growth, survival, and reproduction. Despite the predicted increase in episodic frost events under continued cli
Arthropod abundance censused on the host plant Ligusticum porteri near Gothic, CO.
The objective of this study is to understand how climate cues affect the abundance and phenology of aphids and the arthropods with which they interact. These data were collected in 20 populations of the host plant (Ligusticum porteri) along an elevation gradient near Gothic, CO, USA. We randomly-sel
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
Hillslope subsurface flow and transport data for the PLM transect in East River, Colorado.
This file contains data used to calculate subsurface flow and transport at the Pumphouse Lower Montane (PLM) hillslope transect. Information includes locations, weather data, hydraulic conductivities, hydraulic head profiles, soil water profiles, depths to the water table, specific conductance (SC)
Plant species distribution within the Upper Colorado River Basin estimated by using hyperspectral and LiDAR airborne data.
This package is part of the Watershed Function SFA project and contains a remote sensing dataset acquired at the East River, Colorado. The remote sensing dataset is composed of vegetation maps computed from hyperspectral and LiDAR airborne data acquired by the NEON team in June 2018. The maps show t
Site-level Foliar C, N, delta13C data from samples collected during field survey associated with NEON AOP survey, East River, CO 2018.
Carbon (C) and nitrogen (N) weight percent concentrations were obtained from the bulk foliar samples collected across East River, Washington Gulch, Slate River, and Coal Creek watersheds in Gunnison, Colorado during the summer of 2018. These samples were collected from sun-lit leaves of meadow, shru
Locations, metadata, and species cover from field sampling survey associated with NEON AOP survey, East River, CO 2018.
Locations and descriptions of the 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 across East River, Washin
Effects of food addition on life history of yellow-bellied marmots
Caddisfly life histories along permanence gradients in high-altitude wetlands in Colorado (U.S.A.)
SUMMARY1. Larvae of cased caddisflies (Limnephilidae and Phryganeidae) are among the most abundant and conspicuous invertebrates in northern wetlands. Although species replacements are often observed along permanence gradients, the underlying causal mechanisms are poorly understood. In this paper, w
A multivariate search for pollination syndromes among penstemons
Adaptation at specific loci. VII. Natural selection, dispersal and the diversity of molecular-functional variation patterns among butterfly species complexes (<i>Colias</i>: Lepidoptera, Pieridae)
AbstractNatural genetic variants at the phosphoglucose isomerase, PGI, gene differ in spatial patterning of their polymorphism among species complexes ofColiasbutterflies in North America. In both lowland and alpine complexes, molecular–functional properties of the polymorphic genotypes can be used
Changes in flowering and abundance of <i>Delphinium nuttallianum</i> (Ranunculaceae) in response to a subalpine climate warming experiment
High-altitude and high-latitude sites are expected to be very sensitive to global warming, because the biological activity of most plants is restricted by the length of the short snow- free season, which is determined by climate. Long-term observational studies in subalpine meadows of the Colorado R
The responses of montane shrubs to spatial and temporal climate variation in
Genetic structure in a montane mayfly <i>Baetis bicaudatus</i> (Ephemeroptera: Baetidae), from the Rocky Mountains, Colorado
Summary1. Populations of a number of sub‐tropical stream insect species have been found to show unexpected patterns of genetic variation, with more differences between samples from the same stream than between whole streams or between subcatchments. Many samples also showed deviations from Hardy–Wei
Integrating experimental and gradient methods in ecological climate change research
Subalpine meadow flowering phenology responses to climate change: integrating experimental and gradient methods
We integrated experimental and natural gradient field methods to investigate effects of climate change and variability on flowering phenology of 11 subalpine meadow shrub, forb, and graminoid species in Gunnison County, Colorado (USA). At a subalpine meadow site, overhead electric radiant heaters ad
Empirical evidence for nonselective recruitment and a source-sink dynamic in a mayfly metapopulation
Dispersal among spatially subdivided populations and variability in local habitat patch quality can strongly affect local and regional population dynamics. A metapopulation of mayflies (Callibaetis ferrugineus hageni) was studied in which larvae developed in beaver ponds and emerged to the terrestri
Nests of Preble's Meadow Jumping Mouse (Zapus hudsonius preblei) in Douglas County, Colorado
Biotic and abiotic effects on ant community structure
Previous studies have shown that plant species diversity, habitat type, elevation, and temperature affect ant community structure. In this study, I examined the roles of these factors at 10 sites in and around Gothic, CO in aspen stands and meadows. Data gathered through baiting experiments and pitf
