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1,730 results for “pollinator”
Survey of Wild Bee Pollinators on Nyssa Sylvatica at Harvard Forest since 2021
Black gum (Nyssa sylvatica) is amongst the latest blooming canopy species to produce vast numbers of flowers and abundant nectar and pollen within forests of the Northeastern United States, a position previously held by the American Chestnut (Castanea dentata). Prior research indicates N. sylvatica is insect pollinated and wild bees have been observed visiting flowers; we are unaware, however, of any detailed surveys and/or characterization of the Nyssa-associated wild bee community in the Northeastern United States. Wild bee species frequent the canopy from early to late spring, presumably to forage, prior to being found in blooming crops such as apple and strawberry later in the season. The late bloom time of N. sylvatica (in early June) may extend floral resource availability in the temperate forest canopy and support forest-associated wild bee communities prior to the bloom of summer-flowering plant species.
Demographic census data for four perennial plants under experimental pollination treatments
These demographic data were collected to measure the effects of manipulated pollination treatments on the population dynamics of four iteroparous perennial plant species: Delphinium nuttallianum (Ranunculaceae), Hydrophyllum fendleri (Boraginaceae [Hydrophyllaceae]), Erigeron speciosus (Asteraceae), and Potentilla pulcherrima (Roseaceae). The pollination treatments consisted of Control corresponding to ambient pollination, Reduced for which 50% of open flowers on each individual were enclosed in mesh to exclude pollinators, Supplemented for which all receptive flowers were hand pollinated with outcross pollen, and Variable for which individuals received the Reduced treatment in ca. 50% of years. The full life cycle was characterized from at least four annual demographic censuses of tagged plants between 2017-2022, germination rates estimated in seed addition plots, and soil seed bank survival estimated from buried seed bags.
GPH01 Grazing management effects on pollinator communities and habitat at Konza Prairie, 2024-2025
For all data files, data were collected in Konza Prairie LTER sites: N1A, N1B, C1A, K1B, and 1D during May, July, and August in both 2024 and 2025. The goal was to investigate variation in pollinator foraging and nesting habitat and in foraging and nesting pollinator communities across grazing regimes. Details for each file follow: 1. Plant-pollinator interactions (file = pollinatorNetworks); 2. Bees collected from ground nests (file = nestingBees); 3. Floral resources observed along transects (file = floralResources); 4. Bare ground cover and vegetation height measured along transects (file = otherHabitat); 5. Soil characteristics (file = soils)
Pollinator visitation, flower count, and seed set in Black Sand plots, 2020.
Anthropogenic climate change is altering interactions among numerous species, including plants and pollinators. Plant-pollinator interactions, crucial for the persistence of most plant and many insect species, are threatened by climate change-driven phenological shifts. Phenological mismatches between plants and their pollinators may affect pollination services, and simulations indicated that these mismatches may reduce floral resources available to up to 50% of insect pollinator species. Although alpine plants rely heavily on vegetative reproduction, seedling recruitment and seed dispersal are likely to be important drivers of alpine community structure. Similarly, advanced flowering may expose plants to increased risk of frost damage and shifted soil moisture regimes; phenologically advanced plants will experience these environmental factors differently, which may alter their floral resource production. These effects may be dependent upon topography. Some species of alpine plants on the Niwot Ridge have displayed advanced phenology under treatments of advanced snowmelt (Forrester, 2021). However, little is understood about how these differences in distribution and phenology affect pollinator community composition and plant fecundity. Here we strive to examine how experimentally-induced changes in the timing of flowering and number of flowers produced by plants impact plant-pollinator interactions and seed set. We also ask how topography and the number of flowers interact with early snowmelt to affect pollination rates and the diversity of pollinating insects. Finally, we ask how seed set of Geum rossii is affected by pollinator visitation at different times of the season, under experimentally advanced snowmelt versus unmanipulated snowmelt, and with visitation by different insect taxa. In summer 2020, we found that plots with advanced phenology experienced peaks in pollinator visitation rates and pollinator diversity earlier than plots with unmanipulated snowmelt.
Plant Pollinator data at HJ Andrews Experimental Forest, 2011 to 2021
Despite the importance of plant-pollinator interactions for ecological communities, few long-term observational studies have been conducted of plant-pollinator networks. This study involves the annual collection of plant-pollinator interaction data from up to 18 meadows in the Willamette National Forest, Oregon, including 12 meadows in the HJ Andrews Forest. This study addresses how meadow size, the amount of nearby meadow habitat, weather, degree days, and soil moisture are related to the flowering of meadow plants and the frequency of plant-pollinator interactions.
Experimental Studies of Pollination of Viburnum edule (highbush cranberry) Collected in the Spring of 2020 and 2021 at Interior Alaska Sites around Fairbanks, Alaska
This dataset contains the results of experimental studies of pollination of Viburnum edule (highbush cranberry) in spring of 2020 and 2021. It compares pollinator visitation rates, pollen deposition, and the composition of the pollinator community between inflorescences exposed at the very start of the flowering period and at peak flowering and between the two years . It also contains the results of a pollinator exclusion experiment conducted in spring of 2020.
Pollinator visitation and floral resource production in Black Sand plots, 2019.
Anthropogenic climate change is altering interactions among numerous species, including plants and pollinators. Plant-pollinator interactions, crucial for the persistence of most plant and many insect species, are threatened by climate change-driven phenological shifts. Phenological mismatches between plants and their pollinators may affect pollination services, and simulations indicated that these mismatches may reduce floral resources available to up to 50 percent of insect pollinator species. Although alpine plants rely heavily on vegetative reproduction, seedling recruitment and seed dispersal are likely to be important drivers of alpine community structure. Similarly, advanced flowering may expose plants to increased risk of frost damage and shifted soil moisture regimes; phenologically advanced plants will experience these environmental factors differently, which may alter their floral resource production. Some species of alpine plants on the Niwot Ridge have displayed advanced phenology under treatments of advanced snowmelt (Forrester, unpublished data). However, little is understood about how these differences in distribution and phenology affect floral resources, pollinator community composition, and plant fecundity. Here we strive to examine how changes in the timing of flowering and number of flowers produced by plants, driven by experimental changes to climatic conditions at individual sites impact pollinator communities. In summer 2019, we found that plots with advanced phenology experienced peaks in pollinator visitation rates and pollinator diversity earlier than plots with unmanipulated snowmelt. We expect this to be because of the advanced floral phenology of certain key species in these plots. We did not find evidence that plants with advanced phenology produce fewer floral resources.
Floral traits of animal-pollinated Sevilleta plant species
Concern about pollinator populations is widespread, with bees documented to be in decline due to factors including habitat loss, disease, and pesticides. In addition, climate change may be an important cause of bee population losses, but few studies have examined bee abundance relationships with climate variables. Importantly, bees may respond directly to climate or may exhibit indirect responses to climate via changes in plant phenology or community composition. This study collected floral trait data to complement the Sevilleta LTER pollinator monitoring, plant phenology, and plant biomass datasets, with the aim of examining whether floral resource availability mediates bee responses to climate. For 71 common, animal-pollinated flowering plant species, we measured floral traits relevant to pollination in June–October 2018 and April–August 2019 within sites representing four ecosystem types at the Sevilleta National Wildlife Refuge: Plains grassland, Chihuahuan Desert grassland, Chihuahuan Desert shrubland, and piñon-juniper woodland. On a minimum of 5 individuals per plant species, we recorded the total number of open flowers and the corolla width of flowers, along with plant height and vegetative cover. These data may be used in combination with the Sevilleta LTER pollinator monitoring, phenology, and biomass datasets to examine how bee and floral resource abundance, diversity, and phenology vary across years and whether these changes correspond with one another, as well as to consider relationships among climate, floral resource abundance/diversity, and bee abundance/diversity.
Data from: Nutrient enrichment negatively impacts flowers and pollinators, especially in warmer climates
Using data from 14 plant and pollinator communities in three continents, we assessed the effect of different fertilization treatments on plant and pollinator abundance and richness. The 14 sites spanned a wide range of ambient temperature and soil fertility and replicated a long-term nutrient experiment identically. This allowed us to separate the role of nutrients across ambient site conditions to determine whether effects vary with environmental conditions. We found an interactive effect of temperature and soil fertility with nutrient enrichment, with N input having a more negative impact on plants and pollinators in warmer climates. Moreover, the effects on flower abundance were more pronounced in high fertility soils, while plant richness was more affected in poor fertility soils. In general, the effect of nutrient enrichment in colder climates was positive, and pollinators were more responsive to nutrient enrichment than plants. These results highlight the high susceptibility of warmer regions and particularly their pollinators to nutrient enrichment. This chapter is presented in a format in which Results and Discussion sections are written together, to match the format of the Journal selected for future submission.
Urbanization drives an early spring for plants but not for pollinators
<p>These files include data and code used in the article titled: "Urbanization drives an early spring for plants but not for pollinators". Data files are .txt with tab-separated values, and include abundances of pollinators captured and total floral cover estimated in each site (1-12) at each sampling event (6 events), in the three urban classes (low, medium, high).</p>
Modifications of the plant-pollinator network structure and species' roles along a gradient of urbanization
<p>This file includes data and codes used in the article titled: " Modifications of the plant-pollinator network structure and species’ roles along a gradient of urbanization".</p> <p>Data include plant-pollinator interactions sampled in each site (1-12) at each sampling event (6 events) in the three urbanization classes (low, medium, high). Each row is a single insect pollinator X plant interaction. Full species names and abbreviations used in figures in the Supplementary Information are reported.<br> The data file is .txt with tab-separated values.</p>
[Dataset] Plant–pollinator in a highly intensive agricultural landscape LTSER Zone Atelier Plaine & Val de Sèvre
<p>We built bipartite networks formed by pollinators and the flowers they forage on, using data collected in the Long Term Socio-Ecological Research site "Zone Atelier Plaine & Val de Sèvre" (Bretagnolle et al. 2028). We compiled a six-year monitoring dataset of plant–pollinator interactions, sampling by sweep-nets along transects in the main crop types of this intensive agricultural plain. </p> <p>The dataset contained all the "pollinator-plant" pair observed in each crop samples.</p>
Species diversity and extinction risk of vertebrate pollinators in India
<p>This repository includes the data compiled and used for the study of <strong>‘Species diversity and extinction risk of vertebrate</strong><br><strong>pollinators in India’</strong>. If you use these data, please cite them along with our manuscript:</p> <blockquote> <p>Kallivalappil R., Grattarola F., de Alwis Pitts D., Cotter S.C. & Pincheira-Donoso D. (2024). Species diversity and extinction risk of vertebrate<br>pollinators in India. <em>Biodiversity and Conservation</em>. https://doi.org/10.1007/s10531-024-02848-3</p> </blockquote> <p> </p> <h2>Abstract</h2> <p>Animal pollinators underpin the functioning and persistence of ecosystems globally. However, the vital role of pollination is being progressively eroded by the worldwide decline of pollinator species caused by human-induced environmental degradation, resulting in rising costs to biodiversity, agriculture, and economy. Most studies quantifying pollinator diversity and declines have focused on insects, whereas vertebrate pollinators remain comparatively neglected. Here, we<br>present the first comprehensive study quantifying the macroecological patterns of species richness and extinction risk of bird and mammal pollinators in India, a region of extremely high biodiversity and increasing anthropogenic pressure. Our results reveal that hotspots of mammal pollinator diversity are restricted to the south of the Western Ghats, whereas bird pollinator diversity hotspots are scattered throughout the country. Analyses of hotspots of threatened species<br>(based on the IUCN Red List) show that only mammal pollinators are currently classified as threatened in India, whereas multiple hotspots of population declines were observed for birds, and primarily in the Southwest for mammal pollinators. Our analyses failed to identify a role for species traits as drivers of these patterns, whereas most pollinators appear to be threatened by agriculture, logging and hunting for food, and medicinal purposes. Pollinator endangerment has widescale<br>ecological and economic implications such as reduced food production, plant extinction, loss of functional and genetic diversity, and economic damage. We suggest protection of vertebrate pollinators should be emphasised in active conservation agendas in India.</p> <p> </p> <h2>Files</h2> <h3>Spatial</h3> <ul> <li><code>india.gpkg</code></li> <li><code>birds.gpkg</code></li> <li><code>mammals.gpkg</code></li> <li><code>how_to_read_gpkg_data.R</code></li> </ul> <h3>Phylogenetic</h3> <ul> <li><code>PGLS_phylogeny_birds.nex</code></li> <li><code>PGLS_phylogeny_mammals.nex</code></li> </ul> <h3>Tables</h3> <ul> <li><code>all_bird_traits.csv</code></li> <li><code>all_mammals_traits.csv</code></li> <li><code>threatened_mammals_traits.csv</code></li> <li><code>plant_pollinator_dataset.csv</code></li> <li><code>pollinator_plant_dataset.csv</code></li> <li><code>references.txt</code></li> </ul>
A database of plant-pollinator networks
<p>This database assembles different published datasets of observed interaction networks between plants and pollinators, which were extracted from articles, theses and existing online databases.</p> <p>Each row in the data table corresponds to an interaction between a plant and a pollinator species reported at a given site by a given publication.</p>
Pollinator-flower interactions in gardens during the COVID-19 pandemic lockdown of 2020
<p>During the main COVID-19 pandemic lockdown period of 2020 an impromptu set of pollination ecologists came together via social media and personal contacts to carry out standardised surveys of the flower visits and plants in their gardens. The surveys involved 67 rural, suburban and urban gardens, of various sizes, ranging from 61.18<sup>o</sup> North in Norway to 37.96<sup>o</sup> South in Australia and resulted in a data set of 25,174 rows long and comprising almost 47,000 visits to flowers, as well as records of plants that were not visited by pollinators. In this first publication from the project we present a brief description of the data and make it freely available for any researchers to use in the future, the only restriction being that they cite this paper in the first instance. As well as producing a data set that we hope will be widely used in the future, the project helped enormously with the health and mental wellbeing of the participants, a by-product of ecological field work that cannot be over-estimated.</p>
Open database on distributional information on European pollinators
<p>(abstract) This dataset was produced in the framework of the work package 1 (task 1) of the Horizon EU project Safeguard. We aimed to mobilise EU experts and data to compile and make available distributional data for bees, butterflies, moths and hoverflies. This will allow us to assess the magnitude, scale and extent of status and trends in pollinator distributions, diversity, abundance, communities and plant-pollinator networks.</p> <p>(method) Regarding distribution data for bees, UMons have been in contact with 23 bee taxonomists, 52 national champions and 5 museums. To date, we collected 52 bio-geographical databases of European bees from both restricted (i.e. databases shared under ad hoc agreement) and public (i.e. openly accessible databases) sources. Regarding distributional data for hoverflies, the starting point was the recently published in the IUCN Red List of hoverflies. To expand the number of species with precise distributional data on syrphid flies, UNSPMF further contacted taxonomists working with this species group : Gunilla Stahls from Finland; Jeroen van Steenis, Wouter van Steenis and Gerard Pennards from Netherlands; Grigory Popov from Ukraine; Santos Rojo from Spain; Axel Ssymank from Germany; Libor Mazanek from Czech Republic; Daniele Sommaggio from Italy. They provided additional data and conducted validation of the existing data, but also engaged additional experts who provided the data. For the butterflies and the moth, the data was collected by UFZ and come from an original initiative of the scientific expert on those two groups. As the publication of the row data of some databases (e.g. bees from The Netherlands) required the clustering of the spatial records to geographic grid squares (e.g. 10x10 km²), we simplified all the records in the present dataset.</p> <p>(dataset) We consider as a data, a record that includes the following information: the name of the species, the coordinates where the species was collected. Additional information were collected (e.g. collector, determinator, number of the individuals collected, sex, data owner and reference code) but were not displayed in the present dataset. The aggregation of bee databases include 4,837,731 row data for bees, 680,641 row data for hoverflies, 1,209,320 row data for butterflies and 6,862,835 row data for moths.</p>
Backyard Beetles and Pollinators Dataset - EREN/NEON Flexible Learning Project
<p>This dataset comes from the EREN-NEON flexible learning project 'Backyard Beetles and Pollinators.' It can be used for teaching field, computational, or hybrid courses. The dataset is standardized, visual observations of insect plant visitors, identified to standard functional groups, to indirectly assess pollination and construct plant-pollinator interaction networks. Insects were identified to morphospecies in the field using reference images. We also collected information about the flowers the insects were observed on - including functional type information about the color, size, and type of flower - as well as cover. This information is part of an ongoing course-based undergraduate research project to both teach about plants, insects, and functional biodiversity in a flexible and inclusive way - while collaboratively assessing interaction networks across landscapes and time. </p> <p>To use the flexible lesson materials or join the collaboration, get more information here: https://erenweb.org/eren-neon-flexible-learning-projects/ Or contact the project lead, Dr. Stack Whitney, directly at kxwsbi [at] RIT [dot] edu. </p>
Seasonal trajectories of plant-pollinator interaction networks differ following phenological mismatches along an urbanization gradient - Data and code
<p>Dataset and code used in the article "Seasonal trajectories of plant-pollinator interaction networks differ following phenological mismatches along an urbanization gradient", by A. Fisogni et al., published in Landscape and Urban Planning (2022, 226:104512, <a href="https://www.sciencedirect.com/science/article/pii/S016920462200161X?via%3Dihub">https://doi.org/10.1016/j.landurbplan.2022.104512</a>)</p>
Dataset from: A test of the reproductive assurance hypothesis in Ipomoea hederacea: does inbreeding depression counteract the benefits of self-pollination?
<p><strong>PREMISE: Darwin proposed that self-pollination in allegedly outcrossing species might act as a reproductive assurance mechanism when pollinators or mates are scarce; however, in natural populations, the benefits of selfing may be opposed by seed discounting and inbreeding depression. While empirical studies show variation among species and populations in the magnitude of reproductive assurance, little is known about the counterbalancing effects of inbreeding depression.</strong></p> <p><strong>METHODS: By comparing the female reproductive success of emasculated and open-pollinated flowers, we assessed the reproductive assurance hypothesis in two Mexican populations of <em>Ipomoea hederacea.</em> In one population we assessed temporal variation in reproductive assurance for three years. We evaluated inbreeding depression on seed production, seedling germination, and dry plant mass by contrasting self- and cross-hand pollination treatments in one population for two years.</strong></p> <p><strong> KEY RESULTS: The contribution of self-pollination to female reproductive success was high and consistent between populations, but there was variation in reproductive assurance across years. Inbreeding depression was absent in the early stages of progeny development, but there was a small negative effect of inbreeding in the probability of germination and the mass of adult progeny. </strong></p> <p><strong>CONCLUSIONS: Self-pollination provided significant reproductive assurance in <em>I. hederacea </em>but this contribution was variable across time. The contribution of reproductive assurance is probably reduced by inbreeding depression in later stages of progeny development, but this counter-effect was small in the study populations. This study supports the hypothesis that reproductive assurance with limited inbreeding depression is likely an important selective force in the evolution of self-pollination in the genus <em>Ipomoea</em>. </strong></p>
Warming of experimental plant-pollinator communities advances phenologies, alters traits, reduces interactions, and depresses reproduction
<p>This is the data set supporting the analyses performed in the article entitled "Warming of experimental plant-pollinator communities advances phenologies, alters traits, reduces interactions, and depresses reproduction", by Natasha de Manincor, Alessandro Fisogni, and Nicole E. Rafferty, published in Ecology Letters (2023, 26:323-334, <a href="https://doi.org/10.1111/ele.14158">https://doi.org/10.1111/ele.14158</a>).</p> <p>The experiment has been performed in the greenhouse facilities at the University of California, Riverside, in 2021.</p> <p>The two treatments analyzed are ambient vs warmed (+ 4 °C), the focal pollinator species is <em>Osmia lignaria</em>, and the three focal plant species are <em>Collinsia heterophylla</em>, <em>Nemophila menziesii</em>, and <em>Phacelia campanularia</em>.</p> <p>Data are tab separated .txt files.</p>
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.