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How wild bees find a way in European cities: Pollen metabarcoding unravels multiple feeding strategies and their effects on distribution patterns in four wild bee species

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cris.virtualsource.author-orcid362c6679-6484-44a9-a5b6-eaf80f4cee38
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dc.abstract.en1. Urban ecosystems can sustain populations of wild bees, partly because of theirrich native and exotic floral resources. A better understanding of the urban beediet, particularly at the larval stage, is necessary to understand biotic interactionsand feeding behaviour in urban ecosystems, and to promote bees by improvingthe management of urban floral resources. 2. We investigated the larval diet and distribution patterns of four solitary wild beespecies with different diet specialization (i.e. Chelostoma florisomne, Osmia bi-cornis, Osmia cornuta and Hylaeus communis) along urban intensity gradients in fiveEuropean cities (Antwerp, Paris, Poznan, Tartu and Zurich) using two complemen-tary analyses. Specifically, using trap-nests and pollen metabarcoding techniques,we characterized the species' larval diet, assessed diet consistency across cities andmodelled the distribution of wild bees using species distribution models (SDMs). 3. Our results demonstrate that urban wild bees display different successful strate-gies to exploit existing urban floral resources: not only broad generalism (i.e. H.communis) but also intermediate generalism, with some degree of diet conserva-tism at the plant family or genus level (i.e. O. cornuta and O. bicornis), or evenstrict specialization on widely available urban pollen hosts (i.e. C. florisomne).Furthermore, we detected important diet variation in H. communis, with a switchfrom an herbaceous pollen diet to a tree pollen diet with increasing urban intensity. 4. Species distribution modelling indicated that wild bee distribution ranges insideurban ecosystems ultimately depend on their degree of specialization, and thatbroader diets result in less sensitivity to urban intensity. 5. Policy implications. Satisfying larval dietary requirements is critical to preservingand enhancing wild bee distributions within urban gradients. For high to interme-diate levels of feeding specialization, we found considerable consistency in thepreferred plant families or genera across the studied cities, which could be gener-alized to other cities where these bees occur. Identifying larval floral preferences(e.g. using pollen metabarcoding) could be helpful for identifying key plant taxaand traits for bee survival and for improving strategies to develop bee-friendlycities.
dc.affiliationWydział Medycyny Weterynaryjnej i Nauk o Zwierzętach
dc.affiliation.instituteKatedra Zoologii
dc.contributor.authorCasanelles‐Abella, Joan
dc.contributor.authorMüller, Stefanie
dc.contributor.authorKeller, Alexander
dc.contributor.authorAleixo, Cristiana
dc.contributor.authorAlós Orti, Marta
dc.contributor.authorChiron, François
dc.contributor.authorDeguines, Nicolas
dc.contributor.authorHallikma, Tiit
dc.contributor.authorLaanisto, Lauri
dc.contributor.authorPinho, Pedro
dc.contributor.authorSamson, Roeland
dc.contributor.authorTryjanowski, Piotr
dc.contributor.authorVan Mensel, Anskje
dc.contributor.authorPellissier, Loïc
dc.contributor.authorMoretti, Marco
dc.date.access2026-02-27
dc.date.accessioned2026-03-09T06:29:23Z
dc.date.available2026-03-09T06:29:23Z
dc.date.copyright2021-10-16
dc.date.issued2022
dc.description.abstract<jats:title>Abstract</jats:title><jats:p> <jats:list> <jats:list-item><jats:p>Urban ecosystems can sustain populations of wild bees, partly because of their rich native and exotic floral resources. A better understanding of the urban bee diet, particularly at the larval stage, is necessary to understand biotic interactions and feeding behaviour in urban ecosystems, and to promote bees by improving the management of urban floral resources.</jats:p></jats:list-item> <jats:list-item><jats:p>We investigated the larval diet and distribution patterns of four solitary wild bee species with different diet specialization (i.e. <jats:italic>Chelostoma florisomne</jats:italic>, <jats:italic>Osmia bicornis</jats:italic>, <jats:italic>Osmia cornuta</jats:italic> and <jats:italic>Hylaeus communis</jats:italic>) along urban intensity gradients in five European cities (Antwerp, Paris, Poznan, Tartu and Zurich) using two complementary analyses. Specifically, using trap‐nests and pollen metabarcoding techniques, we characterized the species' larval diet, assessed diet consistency across cities and modelled the distribution of wild bees using species distribution models (SDMs).</jats:p></jats:list-item> <jats:list-item><jats:p>Our results demonstrate that urban wild bees display different successful strategies to exploit existing urban floral resources: not only broad generalism (i.e. <jats:italic>H. communis</jats:italic>) but also intermediate generalism, with some degree of diet conservatism at the plant family or genus level (i.e. <jats:italic>O. cornuta</jats:italic> and <jats:italic>O. bicornis</jats:italic>), or even strict specialization on widely available urban pollen hosts (i.e. <jats:italic>C. florisomne</jats:italic>). Furthermore, we detected important diet variation in <jats:italic>H. communis</jats:italic>, with a switch from an herbaceous pollen diet to a tree pollen diet with increasing urban intensity.</jats:p></jats:list-item> <jats:list-item><jats:p>Species distribution modelling indicated that wild bee distribution ranges inside urban ecosystems ultimately depend on their degree of specialization, and that broader diets result in less sensitivity to urban intensity.</jats:p></jats:list-item> <jats:list-item><jats:p><jats:italic>Policy implications</jats:italic>. Satisfying larval dietary requirements is critical to preserving and enhancing wild bee distributions within urban gradients. For high to intermediate levels of feeding specialization, we found considerable consistency in the preferred plant families or genera across the studied cities, which could be generalized to other cities where these bees occur. Identifying larval floral preferences (e.g. using pollen metabarcoding) could be helpful for identifying key plant taxa and traits for bee survival and for improving strategies to develop bee‐friendly cities.</jats:p></jats:list-item> </jats:list> </jats:p>
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if5,7
dc.description.number2
dc.description.points140
dc.description.versionfinal_published
dc.description.volume59
dc.identifier.doi10.1111/1365-2664.14063
dc.identifier.eissn1365-2664
dc.identifier.issn0021-8901
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/7700
dc.identifier.weblinkhttps://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2664.14063
dc.languageen
dc.relation.ispartofJournal of Applied Ecology
dc.relation.pages457-470
dc.rightsCC-BY
dc.sciencecloudnosend
dc.share.typeOTHER
dc.subject.encavity-nesting bees
dc.subject.enfeeding behaviour
dc.subject.enremote sensing
dc.subject.enspecies distribution models
dc.subject.entrap-nests
dc.subject.enurban biodiversity
dc.subject.enurbanization
dc.titleHow wild bees find a way in European cities: Pollen metabarcoding unravels multiple feeding strategies and their effects on distribution patterns in four wild bee species
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue2
oaire.citation.volume59