685 results — topic: Flowering & Pollination
Landscape Flowering Phenology Field Data for Sites in the Vicinity of Crested Butte, CO.
This dataset represents field observations of reproductive development (flowering phenology) in 135 species of flowering plants collected at 12 field sites in the vicinity of Crested Butte, Colorado starting in 2019. Sites were visited approximately weekly from early May until early August, and all
Temperature and floral density data from seven study sites around the Rocky Mountain Biological Laboratory, Colorado: 2013-2021
Data were collected as part of a study of population dynamics of solitary, cavity-nesting Hymenoptera. Nesting structures (“trap-nests”) were established at five study sites along an elevational gradient around the Rocky Mountain Biological Laboratory in 2013. Two additional study sites were added i
Nectar dwelling yeasts and their effects on pollinator preference
Pollinators are extremely important in the global ecosystem. Flowers have evolved attractive traits in order to draw these pollinators. Traits like colorful petals draw in pollinators to metabolic rewards such as nectar and pollen, and in return, pollinators transfer pollen between plants. Plants wi
The effects of road dust on pollination and reproduction of the native wildflower species, <i>Delphinium nuttallianum</i>
Quantifying the effects of pollen load and heterospecific pollen ratio on the species <i>Delphinium barbeyi</i> (Ranunculaceae)
To date there are few studies that have carefully studied the impact that varying pollen quantity and proportion of heterospecific pollen has on reproductive rate of a flowering plants. My project aimed to assess the relationship between pollen quantity and composition on the subalpine larkspur, Del
Comparing <i>Bombus</i> pollinator efficacies in <i>Delphinium barbeyi</i> (Ranunculaceae) reproductive success
Pollinator populations are decreasing globally constituting a major conservation concern. A decline in a particular pollinator species may cause plant population declines. Certain Bombus species may be more effective pollinators; i.e. they contribute more to female reproductive success of a flower s
Exploring within season temporal variation in plant-pollinator interactions in sub-alpine meadows using weekly pollination interaction networks
It is known that sub-alpine meadows experience significant community level changes throughout the spring/summer season due to phenology. In this study we sought to interpret the within- season community-level changes in the sub-alpine meadows of Gothic, CO, USA through the construction of weekly pla
How does altered phenology affect pollination and reproduction of <i>Delphinium nuttallianum</i>?
Due to climate change, wildflowers are blooming earlier and earlier and suffering lower reproductive success. There are two general, non-mutually-exclusive hypotheses about why this lower reproductive success may be occurring. One is that plants are blooming before their pollinators and therefore ar
Measuring the influence of phylogenetic relationships on floral visitation
Pollinators are attracted to flowers based on the sensory information they gather concerning the flower they pollinate, and decide to visit the flower, or not. Closely related plants have similar traits because of their similar genetics, and consequently will attract similar pollinators. The abundan
Dose-dependent effects of nectar alkaloids in a montane plant-pollinator community
SummaryAlthough secondary metabolites are prevalent in floral nectar, the ecological consequences for pollinators and pollination remain relatively unexplored. While often deterrent to pollinators at high concentrations, secondary metabolite concentrations in nectar tend to be much lower than second
Maintenance of temporal synchrony between syrphid flies and floral resources despite differential phenological responses to climate
Variation in species’ responses to abiotic phenological cues under climate change may cause changes in temporal overlap among interacting taxa, with potential demographic consequences. Here, we examine associations between the abiotic environment and plant–pollinator phenological synchrony using a l
Norditerpene alkaloid concentrations in tissues and floral rewards of larkspurs and impacts on pollinators
It is suggested that nectar with low alkaloid concentrations may be beneficial to plant fitness by limiting adverse effects on pollinator activity and optimal defense theory.
Geographical variation in hybridization of <i>Ipomopsis</i> (Polemoniaceae): testing the role of photosynthetic responses to temperature and water
Levels of hybridization between related species can vary in response to evolutionary history or local environmental conditions, such as pollinators and abiotic factors, that affect reproductive isolation. Contact sites between the herbs Ipomopsis aggregata and Ipomopsis tenuituba vary in habitat typ
Altered precipitation affects plant hybrids differently than their parental species
• Premise of the study: Future changes in environmental conditions may alter evolutionary processes, including hybridization in nature. Frequency of hybrids could be altered via range shifts by the parental species or by changes in prezygotic or postzygotic reproductive isolation. We examined the po
Single pollinator species losses reduce floral fidelity and plant reproductive function
Understanding the functional impacts of pollinator species losses on plant populations is critical given ongoing pollinator declines. Simulation models of pollination networks suggest that plant communities will be resilient to losing many or even most of the pollinator species in an ecosystem. Thes
Effects of floral diversity and density on fly (<i>Diptera:Bombyliidae and Syrphidae</i>) floral foraging fidelity in subalpine meadows
Foraging behavior of pollinators is an extensively researched topic. Research on bee, butterfly, and hummingbird foraging behavior has led to a greater understanding of the impacts of plant community composition on foraging behavior. This research has been further enhanced by fly foraging behavior a
The effects of floral traits on the behaviors of pollinators and pre-dispersal seed predators in a gynodioecious species, <i>Polemonium foliosissimum</i>.
In order to maintain in the population, female plants of gynodioecious species must compensate for their loss of male function. Understanding how mutualist pollinators and antagonists such as seed predators respond to floral cues presented by female and hermaphrodite flowers in ways that could contr
Understanding the importance of coniferous understory versus open meadows for bees in times of drought
"With a little help from my friends": Phylogenetic distance as a predictor of floral visitation in the plant communities of Gothic, CO.
Genetic and environmental variation in leaf traits and physiology of <i>Ipomopsis</i>
Selection that differs between environments may maintain genetic differences in traits between two closely related species. In a natural hybrid zone, this environment-mediated selection could also prevent hybrids from successfully occupying parental habitats. Environment-mediated selection can act o
