Evaluation competition for forage plants between honey bees and wild bees in Denmark

Claus Rasmussen; Yoko Luise Dupont; Henning Bang Madsen; Petr Bogusch; Dave Goulson; Lina Herbertsson; Kate Pereira Maia; Anders Nielsen; Jens M. Olesen; Simon G. Potts; Stuart P. M. Roberts; Markus Arne Kjær Sydenham; Per Kryger

doi:10.1371/journal.pone.0250056

Evaluation competition for forage plants between honey bees and wild bees in Denmark

Claus Rasmussen^*, Yoko Luise Dupont, Henning Bang Madsen, Petr Bogusch, Dave Goulson, Lina Herbertsson, Kate Pereira Maia, Anders Nielsen, Jens M. Olesen, Simon G. Potts, Stuart P. M. Roberts, Markus Arne Kjær Sydenham, Per Kryger

^*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

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Abstract

A recurrent concern in nature conservation is the potential competition for forage plants between wild bees and managed honey bees. Specifically, that the highly sophisticated system of recruitment and large perennial colonies of honey bees quickly exhaust forage resources leading to the local extirpation of wild bees. However, different species of bees show different preferences for forage plants. We here summarize known forage plants for honey bees and wild bee species at national scale in Denmark. Our focus is on floral resources shared by honey bees and wild bees, with an emphasis on both threatened wild bee species and foraging specialist species. Across all 292 known bee species from Denmark, a total of 410 plant genera were recorded as forage plants. These included 294 plant genera visited by honey bees and 292 plant genera visited by different species of wild bees. Honey bees and wild bees share 176 plant genera in Denmark. Comparing the pairwise niche overlap for individual bee species, no significant relationship was found between their overlap and forage specialization or conservation status. Network analysis of the bee-plant interactions placed honey bees aside from most other bee species, specifically the module containing the honey bee had fewer links to any other modules, while the remaining modules were more highly inter-connected. Despite the lack of predictive relationship from the pairwise niche overlap, data for individual species could be summarized. Consequently, we have identified a set of operational parameters that, based on a high foraging overlap (>70%) and unfavorable conservation status (Vulnerable+Endangered+Critically Endangered), can guide both conservation actions and land management decisions in proximity to known or suspected populations of these species.

Originalsprog	Engelsk
Artikelnummer	e0250056
Tidsskrift	PLOS ONE
Vol/bind	16
Nummer	4
Antal sider	19
ISSN	1932-6203
DOI	https://doi.org/10.1371/journal.pone.0250056
Status	Udgivet - apr. 2021

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10.1371/journal.pone.0250056Licens: CC BY

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abstract = "A recurrent concern in nature conservation is the potential competition for forage plants between wild bees and managed honey bees. Specifically, that the highly sophisticated system of recruitment and large perennial colonies of honey bees quickly exhaust forage resources leading to the local extirpation of wild bees. However, different species of bees show different preferences for forage plants. We here summarize known forage plants for honey bees and wild bee species at national scale in Denmark. Our focus is on floral resources shared by honey bees and wild bees, with an emphasis on both threatened wild bee species and foraging specialist species. Across all 292 known bee species from Denmark, a total of 410 plant genera were recorded as forage plants. These included 294 plant genera visited by honey bees and 292 plant genera visited by different species of wild bees. Honey bees and wild bees share 176 plant genera in Denmark. Comparing the pairwise niche overlap for individual bee species, no significant relationship was found between their overlap and forage specialization or conservation status. Network analysis of the bee-plant interactions placed honey bees aside from most other bee species, specifically the module containing the honey bee had fewer links to any other modules, while the remaining modules were more highly inter-connected. Despite the lack of predictive relationship from the pairwise niche overlap, data for individual species could be summarized. Consequently, we have identified a set of operational parameters that, based on a high foraging overlap (>70%) and unfavorable conservation status (Vulnerable+Endangered+Critically Endangered), can guide both conservation actions and land management decisions in proximity to known or suspected populations of these species.",

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AU - Maia, Kate Pereira

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Evaluation competition for forage plants between honey bees and wild bees in Denmark

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