Habitat characteristics structuring bee communities in a forest-shrubland ecotone

Glenny, Will; Runyon, Justin B.; Burkle, Laura A.

doi:10.1016/j.foreco.2023.120883

Cited by 9 publications

(4 citation statements)

References 90 publications

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“…In our system at the urban/forest interface, softwood nesters also increased with increasing forest cover. Glenny et al (2023) reported that the abundance of trees within the forest/grassland ecotone was positively associated with coarse woody debris (CWD), and in turn CWD had a positive association with bee richness and functional diversity early in the growing season and positive association with functional richness later in the growing season. Fortuin and Gandhi (2021) reported that nesting habitat indicators explained the majority of variation in bee communities in clearcut and managed hardwood and pine forests in the SE United States.…”

Section: Discussionmentioning

confidence: 99%

Urban bee functional groups response to landscape context in the Southeastern US

Braman

McCarty

Ulyshen

et al. 2023

Front. Sustain. Cities

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We investigated the influence of landscape cover on urban bee community functional groups. We observed a diversity of functional groups across primarily forested and primarily urban sites, however particular species were favored by forest/urban spaces. Results point to the importance of further investigating the nuance of land use impacts on pollinator communities, and in particular demonstrates the merit of investigating landscape heterogeneity. Conservation of forest remnants in urban environments can positively impact wild bees across multiple functional groups.

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Section: Discussionmentioning

confidence: 99%

Urban bee functional groups response to landscape context in the Southeastern US

Braman

McCarty

Ulyshen

et al. 2023

Front. Sustain. Cities

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“…contained both shrub and tree species, (b.) tree canopy cover was < 10%, (c.) slope < 30%, and were (d.) separated by at least 110 m (details included in (Glenny et al 2023 ). As a result of these two distinct site selection strategies, the number of sites, minimum distance between sites and total area sampled differed by location.…”

Section: Methodsmentioning

confidence: 99%

Bumble bee diet breadth increases with local abundance and phenophase duration, not intraspecific variation in body size

Glenny,

Runyon,

Burkle

2024

Oecologia

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Patterns of abundance across space and time, and intraspecific variation in body size, are two species attributes known to influence diet breadth and the structure of interaction networks. Yet, the relative influence of these attributes on diet breadth is often assumed to be equal among taxonomic groups, and the relationship between intraspecific variation in body size on interaction patterns is frequently neglected. We observed bee–flower interactions in multiple locations across Montana, USA, for two growing seasons and measured spatial and temporal patterns of abundance, along with interspecific and intraspecific variation in body size for prevalent species. We predicted that the association between spatial and temporal patterns of abundance and intraspecific variation in body size, and diet breadth, would be stronger for bumble bee compared to non-bumble bee species, because species with flexible diets and long activity periods can interact with more food items. Bumble bees had higher local abundance, occurred in many local communities, more intraspecific variation in body size, and longer phenophases compared to non-bumble bee species, but only local abundance and phenophase duration had a stronger positive association with the diet breadth of bumble bee compared to non-bumble bee species. Communities with a higher proportion of bumble bees also had higher intraspecific variation in body size at the network-level, and network-level intraspecific variation in body size was positively correlated with diet generalization. Our findings highlight that the association between species attributes and diet breadth changes depending on the taxonomic group, with implications for the structure of interaction networks.

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“…Pollinators can forage or nest in forest-field edges (Kells & Goulson 2003;Sydenham et al, 2014;Sõber et al, 2020), forest-shrubland edges (Glenny et al, 2023), grassland edges (Cole et al, 2015), road verges (Hopwood, 2008), and edges around sparsely vegetated areas such as quarries and other low productive areas (Heneberg & Bogusch 2020). Moreover, improving or introducing edge habitats in the form of flower strips (Haaland et al, 2011; or hedgerows (Morandin & Kremen 2013) can provide pollinators with resources that are otherwise limiting in the landscape.…”

Section: Introductionmentioning

confidence: 99%

Forest edges and other semi-natural habitat edges increase wild bee species richness and habitat connectivity in intensively managed temperate landscapes

Sydenham,

Nielsen,

Dupont

et al. 2024

Preprint

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Pollinator conservation schemes are typically focused on conserving existing-, restoring degraded- or establishing new wild bee habitats. The effectiveness of such conservation schemes depends on the presence of dispersal corridors that allow habitat colonization by bees. Nonetheless, we lack an understanding of the role of semi-natural habitats edges on the connectivity of pollinator communities across intensively managed landscapes. Here, we use data from wild bee communities comprising 953 occurrences from 79 species of non-parasitic bees, sampled at 68 locations distributed across a Norwegian and a Danish landscape to show that the proportion of semi-natural habitat edges is positively correlated to bee species richness and habitat connectivity. Specifically, we found that wild bee species richness sampled along roadsides increased with the proportion of semi-natural habitat edges within1.5 km of the study sites and with local plant species richness. We combined maps showing the proportion of seminatural habitat edges with least cost path analysis to find the most likely dispersal route between our bee communities. We find that these least cost path lengths provide better models of bee species compositional similarity than geographic distance (|ΔAICc| > 2), suggesting that seminatural habitat edges act as dispersal corridors in intensively managed landscapes. However, we also find that compositional similarity between communities depend on site-specific plant species richness stressing the importance of improving the habitat quality of edge habitats if they are to function as dispersal corridors. We discuss potential management options for improving wild bee habitat conditions along seminatural habitat edges and illustrate how maps of least cost paths can be used to identify dispersal corridors between pollinator habitats of conservation priority. Maps of dispersal corridors can be used to direct wild bee habitat management actions along seminatural habitat edges to facilitate the dispersal of bees between larger grassland habitats.

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Habitat characteristics structuring bee communities in a forest-shrubland ecotone

Cited by 9 publications

References 90 publications

Urban bee functional groups response to landscape context in the Southeastern US

Urban bee functional groups response to landscape context in the Southeastern US

Bumble bee diet breadth increases with local abundance and phenophase duration, not intraspecific variation in body size

Forest edges and other semi-natural habitat edges increase wild bee species richness and habitat connectivity in intensively managed temperate landscapes

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