816 results — topic: Alpine & Subalpine Ecology
QA/QC-ed Groundwater Level Time Series in PLM-1 and PLM-6 Monitoring Wells, East River, Colorado
Performed Quality Assurance and Quality Control (QA/QC) analysis of measured groundwater levels in monitoring wells PLM-1 and PLM-6, including identification and flagging of duplicated values of timestamps, gap filling of missing timestamps and water levels, removal of abnormal/bad and outliers of m
Machine Learning Assisted Gap-Filled Discharge Data for the East River Community Watershed, Colorado, for Water Years 2014-2021
This dataset contains a collection of machine learning assisted gap-filled discharge data created for all discharge stations across the East River Watershed, Colorado. This data was generated by using raw discharge data collected by Rosemary Carroll, and conducting a random forest machine learning a
Mammalian herbivores restrict the altitudinal range limits of three alpine grass species, 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
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
WRF Large-Eddy Simulation Data from Realtime Runs Used to Support UAS Operations during LAPSE-RATE
Realtime micro-scale weather simulations were performed to support UAV (Uncrewed Aerial Vehicle) flights during the ISARRA Lower Atmospheric Process Studies at Elevation a Remotely-piloted Aircraft Team Experiment (LAPSE-RATE) field deployment. These simulations were performed by driving a nested gr
Mammalian herbivores restrict the altitudinal range limits of three alpine grass species, 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
Mammalian herbivores restrict the altitudinal range limits of three alpine grass species, 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
Intraspecific variation of specific leaf area along an elevational gradient
We measured Specific leaf area for 23 plants across six elevational sites spanning a total of 610 meters. Within each site, we sampled twenty individuals from each species that was present to determine intraspecific variance in SLA. Nine species showed a significant positive relationship with elevat
The effects of hemiparasitism by <i> Castilleja</i> spp on community structure in alpine ecosystems
Testing the maximum entropy theory of ecology in the warming meadow
As global climate change responses are increasingly observed, theories in macroecology are being tested in order to up-scale species richness data to estimate extinction rates under habitat loss or degradation due to land use and climate change. Insight into effects that anthropogenic warming can ha
Phylogenetic distance can predict susceptibility to attack by natural enemies
If related species share enemies, variation in the damage experienced by species within a community may be predictable based on phylogeny. We examined the hypothesis that plant species more closely related to other community members experience greater herbivory by assessing leaf damage to native and
Influence of population density and climate on the demography of subalpine golden-mantled ground squirrels
Temporal fluctuation in abundance is common in many wildlife populations, but the causes and consequences to population dynamics of these fluctuations remain poorly understood. We used long-term (1990)(1991)(1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(20
An examination of synchrony between insect emergence and flowering in Rocky Mountain meadows
One possible effect of climate change is the generation of a mismatch in the seasonal timing of interacting organisms, owing to species-specific shifts in phenology. Despite concerns that plants and pollinators might be at risk of such decoupling, there have been few attempts to test this hypothesis
On the generality of a climate-mediated shift in the distribution of the American pika (<i>Ochotona princeps</i>)
Alpine species are among those most threatened by climatic shifts due to their physiological and geographic constraints. The American pika (Ochotona princeps), a small mammal found in mountainous, rocky habitats throughout much of western North America, has experienced recent population extirpations
Emergence of a mid-season period of low floral resources in a montane meadow ecosystem associated with climate change
1. Shifts in the spatial and temporal patterns of flowering could affect the resources available to pollinators, and such shifts might become more common as climate change progresses. 2. As mid-summer temperatures have warmed, we found that a montane meadow ecosystem in the southern Rocky Mountains
Dispersal, phenology and habitat preference of subalpine whirligig beetles (Coleoptera: Gyrinidae: Gyrinus)
Whirligig beetle populations from five temporary kettle ponds and one marsh near the Rocky Mountain Biological laboratory, Gunnison County, western Colorado U.S.A. were studied during summer 2010. The purpose of the study was to measure the effects of extreme fluctuating environmental conditions inc
Bee sampling has no effect on bee abundance in montane meadows
One of the most talked about potential consequences of climate change is that of phenological mismatches between interacting species, such as flowering plants and their pollinators. While there is ample long term data for plant phenology, there is little data on pollinator phenology. It is becoming
Intraspecific trait variation affects community distributions of alpine meadow plant communities
Differences between individuals are often not accounted for in studies using plant functional trait data. Variation due to biotic and abiotic conditions is common for many plant traits that are crucial for fitness and survival. However, functional trait methods usually do not account for differences
