Invasive predators affect community-wide pollinator visitation ...

• Main Authors: Liang, Christina, Shiels, Aaron, Haines, William, Sandor, Manette, Aslan, Clare
• Format: Dataset
• Language: English
• Published: Dryad 2021
• Subjects: FOS Biological sciences; Community Ecology < Substantive Area; insect pollinators; invasion biology; invasive predators; invasive species suppression; Plant-animal interactions; plant-animal interaction; pollination disruption; Sida; Rattus rattus
• Online Access: https://dx.doi.org/10.5061/dryad.02v6wwq40; https://datadryad.org/stash/dataset/doi:10.5061/dryad.02v6wwq40

Disruption of plant-pollinator interactions by invasive predators is poorly understood but may pose a critical threat for native ecosystems. In a multi-year field experiment in Hawaiʻi, we suppressed abundances of globally invasive predators and then observed insect visitation to flowers of six native plant species. Three plant species are federally endangered (Haplostachys haplostachya, Silene lanceolata, Tetramolopium arenarium) and three are common throughout their range (Bidens menziesii, Dubautia linearis, Sida fallax). Insect visitors were primarily generalist pollinators, including taxa that occur worldwide such as solitary bees (e.g., Lasioglossum impavidum), social bees (e.g., Apis mellifera), and syrphid flies (e.g., Allograpta exotica). We found that suppressing invasive rats (Rattus rattus), mice (Mus musculus), ants (Linepithema humile, Tapinoma melanocephalum), and yellowjacket wasps (Vespula pensylvanica) had positive effects on pollinator visitation to plants in 16 of 19 significant ... : Ants.csv: A two-column dataset that specifies the number of ants at each monitoring station (column one) used for statistical analysis, in each plot and block of the experiment, during each half-year time period, with the accompanying treatment code (1-60; column 2). The treatment code is unique for each block/plot/half year combination. (See "Treatment Codes for Ant and Yellowjacket data" below.) Ants were monitored at all plots and blocks within the experiment. Rodents.csv: An 8-column dataset that specifies the plot (column 1), block (column 2), half-year period (column 3), date of monitoring (column 4), monitoring station number (column 5), rat presence (column 6), mouse presence (column 7), and treatment code (column 8). Plot codes are as follows: ALL = Combined treatment plot, C = Untreated plot, R = Rodent treatment plot. Treatment codes for rodents do not match those for ants and yellowjackets, and are treated differently in the statistical code. Rodents were monitored at only Combined, Untreated, ...