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145 results for “pollinator effectiveness”
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)
Relaxation of purifying selection suggests low effective population size in eusocial Hymenoptera and solitary pollinating bees
<p>Data and results of the paper "Relaxation of purifying selection suggests low effective population size in eusocial Hymenoptera and solitary pollinating bees".</p> <p>- data_table_species.csv: contains life-history and geographical range descriptors, terminal branch length and genomic estimated values for each substitution category, for each species in the dataset. Contains results obtained with both the complete data set and the subsampled dataset with 88 species.</p> <p>- data_table_genes.csv: contains values of substitution count that are sums of the values obtained for every species in the alignment. Also contains the results of HyPhy RELAX analyses for each alignment.</p> <p>- data_table_genes_species.csv: contains estimated values for each substitution category for each species in each alignment. Contains results obtained with both the complete data set and the subsampled dataset with 88 species.</p> <p> </p>
Data for: Effective population size mediates the impact of pollination services on pollen limitation
<p>Inadequate pollen receipt limits flowering plant reproduction worldwide. Ecological causes of pollen limitation ('PL'), like pollinator scarcity and low plant abundance, have been a primary focus of research. The genetic diversity of plant populations could impact both quantity and quality components of PL in concert with ecological factors, yet empirical examples are lacking. We evaluated joint effects of ecological factors (flower abundance, pollinator visitation) and genetic effective population size (N<sub>E</sub>) on PL across 13 populations of a common herb. We used a histological approach with 5504 styles from 1137 flowers to separate quantity and quality components of PL, and link these to reproductive output. N<sub>E</sub> and pollinator visitation interacted to shape PL, but N<sub>E</sub> had stronger direct effects. Effectively smaller populations experienced stronger quantity PL, and controlled crosses in a pollinator-free environment revealed that pollen quantity was an intrinsic population-level attribute that increased with N<sub>E</sub>. Pollinator visitation enhanced pollen quality, but only in effectively larger populations. Quantity and quality PL negatively impacted fruit and seed set, respectively.<em> </em>Results highlight that PL is dictated by plant population genetic diversity in addition to commonly evaluated ecological factors.<strong> </strong>Efforts to support pollinators will only enhance plant reproduction in genetically diverse plant populations.</p>
The effect of experimental pollinator decline on pollinator-mediated selection on floral traits
<p>Human-mediated environmental change, by reducing mean fitness, is hypothesized to strengthen selection on traits that mediate interactions among species. For example, human-mediated declines in pollinator populations are hypothesized to reduce mean seed production by increasing the magnitude of pollen limitation and thus strengthen pollinator-mediated selection on floral traits that increase pollinator attraction or pollen transfer efficiency. To test this hypothesis, we measured two female fitness components and six floral traits of <em>Lobelia siphilitica</em> plants exposed to supplemental hand-pollination, ambient open-pollination, or reduced open-pollination treatments. The reduced treatment simulated pollinator decline, while the supplemental treatment was used to estimate pollen limitation and pollinator-mediated selection. We found that plants in the reduced pollination treatment were significantly pollen-limited, resulting in pollinator-mediated selection for taller inflorescences and more vibrant petals, both traits that could increase pollinator attraction. This contrasts with plants in the ambient pollination treatment, where reproduction was not pollen-limited and there was no significant pollinator-mediated selection on any floral trait. Our results support the hypothesis that human-mediated environmental change can strengthen the selection on traits of interacting species and suggest that these traits have the potential to evolve in response to changing environments.</p>
Effects of different types of low-intensity management on plant-pollinator interactions in Estonian grasslands
<p>In the face of global pollinator decline, extensively-managed grasslands play an important role in supporting stable pollinator communities. However, different types of extensive management may promote particular plant species and thus particular functional traits. As the functional traits of flowering plant species (e.g. flower size and shape) in a habitat determine the identity and frequency of pollinator visitors, they can also influence the structures of plant-pollinator interaction networks. The aim of this study was to examine how the type of low-intensity traditional management influences plant and pollinator composition, the structure of plant-pollinator interactions, and their mediation by floral and insect functional traits. Specifically, we compared mown wooded meadows to grazed alvar pastures in western Estonia. We found that both management types fostered equal diversity of plants and pollinators, and overlapping, though still distinct, plant and pollinator compositions. Wooded meadows had significantly higher connectance and specialisation, while alvar pastures achieved higher Shannon diversity at a standardised sampling of interactions. Pollinators with small body sizes and short proboscis lengths were more specialised in their preference for particular plant species and the specialisation of individual pollinators was higher in alvar pastures than in wooded meadows. All in all, the two management types promoted diverse plant and pollinator communities, which enabled the development of equally even and nested pollination networks. The same generalist plants and pollinators were important for the pollination networks of both wooded meadows and alvar pastures; however, they were complemented by management-specific species, which accounted for differences in network structure. Therefore, the implementation of both management types in the same landscape helps to maintain high species and interaction diversity.</p>
Datasets from Ganuza et al. 2022: Interactive effects of climate and land use on pollinator diversity differ among taxa and scales
<p>Datasets used in Ganuza et al. 2022: Interactive effects of climate and land use on pollinator diversity differ among taxa and scales. Local and regional data are provided in separate files for the environmental variables, plant species composition and the composition of the different pollinator taxa.</p>
Data from: Integrating effects of neighbor interactions for pollination
<p>Animal-pollinated plants interact with neighbors for both abiotic resources and pollination, with consequences for reproduction and yield. Yet few studies have compared the relative magnitude of these effects, particularly in agroecosystems. In vertically stratified communities, such as agroforests, neighbor effects may be stratum-dependent. Understanding the net effects of neighbors on crop yield is important for managing multifunctional agroecosystems to simultaneously support production and biodiversity. This study evaluated the effects of neighboring plants on pollen deposition, fertilization, and yield in Coffea arabica in a shaded organic coffee farm with high non-crop plant abundance and diversity in Chiapas, Mexico. We assessed the impact of 1) floral resources at three vertical strata (herbs, coffee bushes, and canopy trees) on stigma pollen load (a measure of interaction for pollination), and 2) floral density and canopy cover (proxies for competition for abiotic resources) on yield (final fruit set and per-fruit weight), using structural equation modeling to evaluate the relative effect of each interaction type. Coffee competed for pollination with neighbors (conspecifics and heterospecifics) across strata. Pollen load influenced final fruit set, but the effect of neighbor competition for pollination was weaker than effects mediated by interaction for abiotic resources. Effects of interactions for abiotic resources were heterogeneous across strata, with negligible effects of herb-layer or coffee flower density but net positive effects of canopy trees on final fruit set. Overall effects of neighbors on coffee yield were weak, suggesting that coffee agroecosystems can be managed to maintain high plant density and diversity without sacrificing yield.</p>
Dataset of pollinator functional traits and interaction networks in neotropical mangroves: effects of patch size and surrounding land use
<p>This is the dataset of the manuscript entitled "Pollinator functional traits and interaction networks in neotropical mangroves: effects of patch size and surrounding land use", which was submitted for publication. The dataset include the functional traits of 162 insect pollinator species and 315 interactions with the mangrove species <em>Avicennia germinans, Conocarpus erectus, Laguncularia racemosa,</em> and <em>Rhizophora</em> <em>mangle</em>. The manuscript evaluates the effects of mangrove patch size and surrounding land use on pollinator functional diversity and plant-pollinator interactions in seven mangrove patches from the Colombian Caribbean region. Data variables are pollinator order, family, species, functional traits (pollinator guilds, body size, feeding preference, sociality, and nesting site) and frequency, interacting mangrove species, mangrove patch name, coordinates and size (ha), surrounding land use areas (urban areas, croplands, conserved dry forest, degraded vegetation areas, beach and water) and landscape diversity (Shannon H').</p>
Data from Investigating the effects of diurnal and nocturnal pollinators on male and female reproductive success and on floral trait selection in Silene dioica
<p><strong>data_all_OdEx.csv</strong>: all data about phenotypes or reproductive success at the individual scale</p> <ul> <li>ID : ID name</li> <li>nGrSemis_min : seed number needed to be sowned to get enough seedlings</li> <li>nGrGerm : seed number effectively sowned</li> <li>nGrGerm_OK : number of germinated seed</li> <li>TauxGerm : germination rate</li> <li>nFruits_MAX : maximal number of fruit that the plant could have produced</li> <li>nFruits_OK : effective number of fruits that the plant had produced</li> <li>nFruits_OK_avecPred : effective number of fruits that the plant had produced ignoring predation</li> <li>nFruits_pred : number of predated fruits</li> <li>mean_nbSeeds : mean number of seeds per fruit</li> <li>sd_nbSeeds : sd number of seeds per fruit</li> <li>mean_nbOv : mean ovule non fertilize per fruit</li> <li>sd_nbOv : sd ovule non fertilize per fruit</li> <li>mean_nbOvTOT : mean ovule number per flower</li> <li>sd_nbOvTOT : sd ovule number per flower</li> <li>prodTOT : total number of seed produced including germination rate</li> <li>FS : Fruit-set</li> <li>SS : Seed-set</li> <li>prodTOTsg : total number of seed produced without germination rate</li> <li>nbFlo_run0 : flower number at the beginning of the experiment</li> <li>nbFlo_run1 : flower number at the first measurement</li> <li>mean_nbFlo : mean flower number</li> <li>MeanFec : mean seed sired per males according to MEMM model</li> <li>MeanDelta : mean delta pollen dispersion according to MEMM model</li> <li>MeanMRS : mean male reproductive success (including female RS) according to MEMM model</li> <li>MedFec : same as above with the median</li> <li>MedDelta : same as above with the median</li> <li>MedMRS : same as above with the median</li> <li>VarFec : same as above with the variance</li> <li>VarDelta : same as above with the variance</li> <li>VarMRS : same as above with the variance</li> <li>ciFec : Same as above with confidence interval</li> <li>ciDelta : Same as above with confidence interval</li> <li>ciMRS : Same as above with confidence interval</li> <li>MS_Res : mating success</li> <li>mean_lFl : mean corolla width</li> <li>mean_hFl : mean calyx height</li> <li>QttTOT : pollen number per flower</li> <li>pop : which originate population</li> <li>cohort : which cohort</li> </ul> <p><strong>data_seeds_OdEx.csv</strong> : all data about seed number of weight as well as unfertilized ovule at the fruit scale for female RS</p> <ul> <li>ID : ID name</li> <li>noFruit : ID fruit</li> <li>poids : seed weight</li> <li>nbSeeds : number of seeds</li> <li>nbOv : number of unfertilized ovule</li> <li>moySeeds : mean seed size</li> <li>varSeeds : variance in seed size</li> </ul> <p><strong>data_poll_OdEx.csv</strong> : all data about pollinator observation session</p> <ul> <li>ID : ID name</li> <li>session : observation session number</li> <li>nbVis : number of independent insect attracted</li> <li>nbVisTot : number of total visit</li> <li>binVis : individual visited or not</li> </ul>
Fig. 4 in Effect of Bombus terrestris L. (Hymenoptera, Apidae) pollinating on flowering and fruiting trends of greenhouse tomato (Lycopersicon esculentum)
Fig. 4: The fruiting process in greenhouse tomato with and without bumblebees pollination treatments.
Fig. 1 in Effects of irrigation method on pollination and pollinators (Hymenoptera: Apoidea) in an open-field tomato crop
Fig. 1. Fruit set (A) and weight of fruit (B) in relation to type of irrigation and type of pollination. OM = open + mechanical pollination.
Simulated pollinator decline has similar effects on seed production of female and hermaphrodite Lobelia siphilitica, but different effects on selection on floral traits
<p><span>PREMISE:</span><span> Pollinator decline, by reducing seed production, is predicted to strengthen natural selection on floral traits. However, the effect of pollinator decline on gender dimorphic species (such as gynodioecious species, where plants produce female or hermaphrodite flowers) may differ between the sex morphs: if pollinator decline reduces the seed production of females more than hermaphrodites, then it should also have a larger effect on selection on floral traits in females than in hermaphrodites.</span></p> <p><span>RESULTS: </span><span>Experimentally reducing pollination decreased seed production of both females and hermaphrodites by ~21%. Reducing pollination also strengthened selection on floral traits, but this effect was not larger in females than in hermaphrodites. Instead, reducing pollination intensified selection for taller inflorescences in hermaphrodites, but did not intensify selection on any floral trait in females.</span></p> <p><span>CONCLUSIONS:</span><span> Our results suggest that pollinator decline will not have a larger effect on either seed production or selection on floral traits of female plants. As such, any effect of pollinator decline on seed production may be similar for gender dimorphic and monomorphic species. However, the potential for floral traits of females (and thus of gender dimorphic species) to evolve in response to pollinator decline could be limited.</span></p>
Data from: Isolating the effects of floral temperature on visitation and behavior of wild bee and fly pollinators
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Data from Pollinator effectiveness and importance between female and male mining bee (Andrena)
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Complementary effects of pollination and biocontrol services enable ecological intensification in macadamia orchards
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Data: Inbreeding in a dioecious plant has sex- and population origin-specific effects on its interactions with pollinators
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Data for: Effective population size mediates the impact of pollination services on pollen limitation
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Effects of different types of low-intensity management on plant-pollinator interactions in Estonian grasslands
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The effect of experimental pollinator decline on pollinator-mediated selection on floral traits
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Data from: Pollination efficiency and effectiveness of a male mining bee (Andrena)
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