Abstract
BackgroundHere we present the results from a two-year bee survey conducted on 18 managed emergent wetlands in the lower Mississippi Alluvial Valley of Arkansas, USA. Sample methods included pan traps, sweep netting and blue-vane traps. We document 83 bee species and morphospecies in 5 families and 31 genera, of which 37 species represent first published state records for Arkansas. The majority of species were opportunistic wetland species; only a small number were wetland-dependent species or species largely restricted to alluvial plains.New informationWe present new distributional records for bee species not previously recorded in managed emergent wetlands and report specimens of thirty-seven species for which no published Arkansas records exist, expanding the known ranges of Ceratina cockerelli, Diadasia enavata, Lasioglossum creberrimum, Svastra cressonii and Dieunomia triangulifera. We also distinguish opportunistic wetland bee species from wetland-dependent and alluvial plain-restricted species.
Highlights
Wetlands of one type or another occur throughout North America and, in some parts of the country, dominate the landscape (Mitsch and Gosselink 2015)
We present new distributional records for bee species not previously recorded in managed emergent wetlands and report specimens of thirty-seven species for which no published Arkansas records exist, expanding the known ranges of Ceratina cockerelli, Diadasia enavata, Lasioglossum creberrimum, Svastra cressonii and Dieunomia triangulifera
A small number of bee species in North America are largely or entirely dependent on wetland communities, either because they depend on the pollen of certain wetland-obligate plants (e.g. Ptilothrix bombiformis depends on Hibiscus spp. pollen) or have certain nesting or Checklist of bees (Hymenoptera: Apoidea) from managed emergent wetlands
Summary
Wetlands of one type or another occur throughout North America and, in some parts of the country, dominate the landscape (Mitsch and Gosselink 2015). Some wetland communities have been surveyed, amongst these the Florida Everglades (Pascarella et al 2000), some northcentral Florida wetlands (Hall and Ascher 2010), fens in southern Michigan (Fiedler et al 2011), playa lakes in Nebraska (Park et al 2017), cranberry bogs in the northeast US (Loose et al 2005) and wet flatwoods in Louisiana (Bartholomew and Prowell 2006) These studies and others have demonstrated that the vast majority of bee species found in wetlands occur in terrestrial habitats and are opportunistic wetland species. We distinguish opportunistic wetland bee species from wetland-dependent and alluvial plain-restricted species
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