66 results — topic: Flowering & Pollination
Leaf gas exchange in Ipomopsis aggregata under manipulated snowmelt timing and summer precipitation
Vegetative traits of plants can respond directly to changes in the environment, such as those occurring under climate change. That phenotypic plasticity could be adaptive, maladaptive, or neutral. We manipulated the timing of spring snowmelt and amount of summer precipitation in factorial combinatio
Carry-over effects of larval food stress on adult energetics and life history in a nectar-feeding butterfly
Stressful juvenile developmental conditions can affect performance and fitness later in life. In holometabolous insects such as butterflies, development under stressful conditions may lead to smaller adult size, lower reproductive output and shorter lifespan. However, how larval developmental stress
Data from: Comparative impacts of long-term trends in snowmelt and species interactions on plant population dynamics
Climate change can impact plant fitness and population persistence directly through changing abiotic conditions and indirectly through its effects on species interactions. Pollination and seed predation are important biotic interactions that can impact plant fitness, but their impact on population g
Data from: Genetic and spatial variation in vegetative and floral traits across a hybrid zone
Premise: Genetic variation influences potential for evolution to rescue populations from impacts of environmental change. Most studies of genetic variation in fitness-related traits focus on either vegetative or floral traits, with few on floral scent. How vegetative and floral traits compare in pot
Effects of flowers on land surface albedo and soil microclimate
The phenology of vegetation, namely leaf-out and senescence, can influence the Earth’s climate over regional spatial scales and long time periods (e.g., over 30 years or more), in addition to microclimates over local spatial scales and shorter time periods (weeks to months). However, the effects of
Data from: Selection of floral traits by pollinators and seed predators during sequential life history stages
Organismal traits often influence fitness via interactions with multiple species. That selection is not necessarily predictable from pairwise interactions, such as when interactions occur during different lifecycle stages. Theoretically, directional selection during two sequential episodes, e.g., po
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 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
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
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
Ecological causes and consequences of flower color polymorphism in a self-pollinating plant (Boechera stricta)
Intraspecific variation in flower color is often attributed to pollinator-mediated selection, yet this mechanism cannot explain flower color polymorphisms in self-pollinating species. Indirect selection mediated via biotic and abiotic stresses could maintain flower color variation in these systems.
Shifts in water availability mediate plant-pollinator interactions
Altered precipitation patterns associated with anthropogenic climate change are expected to have many effects on plants and insect pollinators, but it is unknown if effects on pollination are mediated by changes in water availability. We tested the hypothesis that impacts of climate on plant pollina
POLLEN, STARCH, AND ORGANIC RESIDUE (FTIR) ANALYSIS OF SAMPLES FROM SITE 5GN2404, GUNNISON COUNTY, COLORADO.
Site 5GN2404, situated on a south-facing slope overlooking the Gunnison River Valley, was examined as part of work on the Blue Mesa-Skito Transmission Line. This large scatter of flaked lithic and ground stone artifacts also includes several thermal pits (Barb Lockwood, personal communication, Augus
POLLEN ANALYSIS AT 5GN817, CHANCE GULCH, COLORADO WITH SUPPORTING ARCHAEOCLIMATE MODELS FROM GUNNISON, COLORADO.
The Chance Gulch site, 5GN817, is an 8000 year old camp located about 2.5 miles southeast of the town of Gunnison, Colorado. The site is situated within the sagebrush community, though pine and aspen trees are within view. Nine stratigraphic samples were analyzed to determine paleovegetation and pal
Plant census and microenvironment dataset from Mt. Baldy, Colorado, USA, 2014-2017
The data comprise a long-term study of alpine plant community dynamics in the Gunnison National Forest of Colorado. The data comprise annual census data for all plants (including seedlings) in each of 50 2x2m plots, including information on size, reproduction, life stage, and mortality, with all pla
Data supplementing Lichtenberg et al. (2020) Competition for nectar resources does not affect bee foraging tactic constancy. Ecological Entomology
This dataset contains data and scripts that supplement the publication Lichtenberg et al. (2020) Competition for nectar resources does not affect bee foraging tactic constancy. Ecological Entomology. DOI: 10.1111/een.12866 Please cite the above article if you use any of the included data or code.
Data from: Foraging efficiency and size matching in a plant – pollinator community: the importance of sugar content and tongue length
A longstanding question in ecology is how species interactions are structured within communities. Although evolutionary theory predicts close size matching between floral nectar tube depth and pollinator proboscis length of interacting species, such size matching has seldom been shown and explained
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
Plant composition data from 67 grassland sites of the Upper Gunnison Basin, CO, USA, 2014
Here, we deposit data from a vegetation survey conducted in 2014. The data was collected to document current vegetation patterns in the region, parameterize species distribution models, and assess community turnover in flower color. The survey was conducted in the Upper Gunnison Basin and the enviro
