1,912 results — topic: Gunnison Basin
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
Flowering phenology in subalpine meadows: Does climate variation influence community co-flowering patterns?
Climate change is expected to alter patterns of species co-occurrence, in both space and time. Species-specific shifts in reproductive phenology may alter the assemblages of plant species in flower at any given time during the growing season. Temporal overlap in the flowering periods (co-flowering)
Appendix B. Phenological shifts and phenological sensitivity to snowmelt date and summer temperature data used in analyses.
Phylogenetic relationships may underlie species-specific phenological sensitivities to abiotic variation and may help to predict these responses to climate change. Although shared evolutionary history may mediate both phenology and phenological sensitivity to abiotic variation, few studies have expl
Depth profiles of soil CO2 Concentrations, soil temperature, and soil moisture (Rocky Mountain Biological Laboratory, Gothic, Colorado, 2011-2016)
Soil respiration (the flux of CO2 from the soil surface) is one of the largest and most variable fluxes in the global carbon cycle, and yet also one of the least understood, primarily due to methodological difficulties. These are (1) measuring soil respiration at high temporal frequencies and (2) at
Appendix C. Relationships between temperature and arrival of Broad-tailed Hummingbirds and flowering onset in its early-season nectar resources at the Rocky Mountain Biological Laboratory in Colorado, USA.
Phenological advancements driven by climate change are especially pronounced at higher latitudes, so that migrants from lower latitudes may increasingly arrive at breeding grounds after the appearance of seasonal resources. To explore this possibility, we compared dates of first arrival of Broad-tai
Diversity and abundance of phyllosphere bacteria are linked to insect herbivory
Simultaneous or sequential attack by herbivores and microbes is common in plants. Many seed plants exhibit a defence trade-off against chewing herbivorous insects and leaf-colonizing ( phyllosphere ) bacteria, which arises from cross-talk between the phytohormones jasmonic acid (JA, induced by many
Why are some plant—nectar robber interactions commensalisms?
Many plants that bear hidden or recessed floral nectar experience nectar robbing, the removal of nectar by a floral visitor through holes pierced in the corolla. Although robbing can reduce plant reproductive success, many studies fail to find such effects. We outline three mechanistic hypotheses th
Habitat preference of an herbivore shapes the habitat distribution of its host plant
Plant distributions can be limited by habitat-biased herbivory, but the proximate causes of such biases are rarely known. Distinguishing plant-centric from herbivore-centric mechanisms driving differential herbivory between habitats is difficult without experimental manipulation of both plants and h
Low predictability of energy balance traits and leaf temperature metrics in desert, montane, and alpine plant communities
Leaf energy balance may influence plant performance and community composition. While biophysical theory can link leaf energy balance to many traits and environment variables, predicting leaf temperature and key driver traits with incomplete parameterizations remains challenging. Predicting thermal o
Pollinator visitation rate and effectiveness vary with flowering phenology
Premise of the Study – Flowering time may influence pollination success and seed set through a variety of mechanisms, including seasonal changes in total pollinator visitation or the composition and effectiveness of pollinator visitors. Methods – We investigated mechanisms by which changes in flower
Bee phenology is predicted by climatic variation and functional traits
Climate change is shifting the environmental cues that determine the phenology of interacting species. Plant-pollinator systems may be susceptible to temporal mismatch if bees and flowering plants differ in their phenological responses to warming temperatures. While the cues that trigger flowering a
The effect of demographic correlations on the stochastic population dynamics of perennial plants
Understanding the influence of environmental variability on population dynamics is a fundamental goal of ecology. Theory suggests that, for populations in variable environments, temporal correlations between demographic vital rates (e.g., growth, survival, reproduction) can increase (if positive) or
Phenological responses to multiple environmental drivers under climate change: insights from a long-term observational study and a manipulative field experiment
Climate change has induced pronounced shifts in the reproductive phenology of plants, yet we know little about which environmental factors contribute to interspecific variation in responses and their effects on fitness. We integrate data from a 43-year record of first flowering for six species in su
Agenda Item 8, June 24, 1996 Board Meeting- Miscellaneous Matters- Open Meetings Law House Bill 96-1314
Tyler Martineau. Upper Gunnison River Water Conservancy District. June 14, 1996. ?
The BLM has initiated a process to develop standards for rangeland health, and guidelines for livestock grazing in Colorado.
Barry A. Tollefson. US Department of the Interior/BLM Gunnison Resource Area. August 23, 1995
Responses to identified problems by the proposed re-design of the Gunnison Center by Butch Clark
Ralph E Clark III. June 5, 1995.
POWER: Purpose and Membership
Prepared by: Taylor the Trout, John Cope, Butch Clark Organization: Gunnison Basin POWER (People Opposing Water Export Raids) Date: October 1995