Negative impacts of dominance on bee communities: Does the influence of invasive honey bees differ from native bees?

Invasive species can reach high abundances and dominate native environments. One of the most impressive examples of ecological invasions is the spread of the African subspecies of the honey bee throughout the Americas, starting from its introduction in a single locality in Brazil. The invasive honey...

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Detalles Bibliográficos
Autores: Garibaldi, Lucas A., Pérez-Méndez, Néstor, Cordeiro, G.D., Hughes, Alice, Orr, Michael, Alves‐dos‐Santos, Isabel, Freitas, Breno M., Favízia Freitas de Oliveira, LeBuhn, Gretchen, Bartomeus, Ignasi, Aizen, Marcelo A., Andrade, Patricia B., Blotchein, Betina, Boscolo, D., Drumond, Patricia M., Gemmill-Herren, B., Halinski, Rosana, Krug, Cristiane, Motta, M., Piedade Kiill, Lucia H., Pinheiro, Mardiore, Pires, Carmen S.S., Felipe Viana, Blandina, Gaglianone, Maria Cristina
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/253159
Acceso en línea:http://hdl.handle.net/10261/253159
Access Level:acceso abierto
Palabra clave:Apis mellifera
dominance
exotic species
invasion
pollinators
Descripción
Sumario:Invasive species can reach high abundances and dominate native environments. One of the most impressive examples of ecological invasions is the spread of the African subspecies of the honey bee throughout the Americas, starting from its introduction in a single locality in Brazil. The invasive honey bee is expected to more negatively impact bee community abundance and diversity than native dominant species, but this has not been tested previously. We developed a comprehensive and systematic bee sampling scheme, using a protocol deploying 11,520 pan traps across regions and crops for three years in Brazil. We found that invasive honey bees are now the single most dominant bee species. Such dominance has not only negative consequences for abundance and species richness of native bees but also for overall bee abundance (i.e., strong “numerical” effects of honey bees). Contrary to expectations, honey bees did not have stronger negative impacts than other native bees achieving similar levels of dominance (i.e., lack of negative “identity” effects of honey bees). These effects were markedly consistent across crop species, seasons and years, and were independent from land-use effects. Dominance could be a proxy of bee community degradation and more generally of the severity of ecological invasions.

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