Journal of Insect Conservation

, Volume 19, Issue 1, pp 33–43

Species conservation under future climate change: the case of Bombusbellicosus, a potentially threatened South American bumblebee species

  • Aline C. Martins
  • Daniel P. Silva
  • Paulo De MarcoJr.
  • Gabriel A. R. Melo
ORIGINAL PAPER

DOI: 10.1007/s10841-014-9740-7

Cite this article as:
Martins, A.C., Silva, D.P., De Marco, P. et al. J Insect Conserv (2015) 19: 33. doi:10.1007/s10841-014-9740-7

Abstract

Bees ensure 35 % of global food production, but this service is endangered due to several threats. Declines in bumblebee populations (genus Bombus) have been reported worldwide. Bombusbellicosus is one of the rare cases of reported threatened bumblebees in South America. It was once widespread in southern Brazil’s grasslands until the 1960s. During that time, that area underwent increasing land use which led to a decrease in bee abundance and richness, and to local disappearance of B.bellicosus. Climate change is also believed to cause declines in the abundance of B.bellicosus. Here we used species distribution models to assess potential effects of climate changes on the distribution of B.bellicosus in southern Brazil, considering both current and future climate scenarios. Our results show that the suitable climatic conditions for B.bellicosus will retreat southwards. A wax cover inside its nests is usually related to Bombus species inhabiting cooler climates. This cover enables the maintenance of higher temperatures inside the nest and may be deleterious for the species under future warmer climates. Continuously growing land use is the second major threat to this pollinator. The results presented here may eventually provide theoretical grounds and enable practical conservation actions for B.bellicosus protection in South America, especially given the potential adverse effects of climate changes for this species.

Keywords

Species distribution modelling Bumblebee Pollinator Climate change South America Grasslands 

Supplementary material

10841_2014_9740_MOESM1_ESM.docx (371 kb)
Supplementary material 1 (DOCX 370 kb)

Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Aline C. Martins
    • 1
  • Daniel P. Silva
    • 2
  • Paulo De MarcoJr.
    • 3
  • Gabriel A. R. Melo
    • 1
  1. 1.Laboratório de Biologia Comparada de Hymenoptera, Departamento de ZoologiaUniversidade Federal do ParanáCuritibaBrazil
  2. 2.Instituto de Ciências BiológicasUniversidade Federal do ParáBelémBrazil
  3. 3.Theory, Metapopulation and Landscape Lab, Departamento de Ecologia, Instituto de Ciências BiológicasUniversidade Federal de Goiás Campus IIGoiâniaBrazil