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Anna Persson. Foto.

Anna Persson

Forskare

Anna Persson. Foto.

Long-term data shows increasing dominance of Bombus terrestris with climate warming

Författare

  • Lina Herbertsson
  • Reem Khalaf
  • Karin Johnson
  • Rune Bygebjerg
  • Sofia Blomqvist
  • Anna S. Persson

Summary, in English

While many bumblebee species decline due to climate and land-use changes, others cope well with contemporary conditions. One example is Bombus terrestris, which is common in intensively managed agricultural landscapes. During the 20th century its subgenus, which includes the B. lucorum complex (B. lucorum, B. cryptarum and B. magnus) came to dominate Scandinavian bumblebee communities, but the specific contribution of B. terrestris remains to be understood. Using historical data on males, we assessed how the relative abundances of B. terrestris and the B. lucorum complex changed over the past 150 years in southernmost Sweden. We tested if these changes differed between simplified and mixed landscapes and whether the relative abundance of B. terrestris was related to annual mean temperatures. Because floral availability has advanced as a response to climate change, we also tested if the activity period of males (estimated as catching date) has advanced and whether the advancement differs between taxa. The relative abundance of B. terrestris increased similarly in both landscapes, from 21% to 79% over the period, and this was largely explained by increasing temperature. Male activity period has advanced similarly in the two taxa, with 41 days between 1900 and 2015. Although the dominance of B. terrestris correlates clearly with annual mean temperature, it remains to disentangle why. It also remains to understand whether the success of B. terrestris occurs at the expense of other species or simply reflects that this species copes better with contemporary conditions.

Avdelning/ar

  • Funktionell zoologi
  • Syngruppen
  • BECC: Biodiversity and Ecosystem services in a Changing Climate
  • Entomologiska samlingarna
  • Centrum för miljö- och klimatvetenskap (CEC)
  • Biodiversitet
  • Biodiversitet och bevarandevetenskap

Publiceringsår

2021

Språk

Engelska

Sidor

116-123

Publikation/Tidskrift/Serie

Basic and Applied Ecology

Volym

53

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Ecology

Nyckelord

  • Buff-tailed bumblebee
  • Global change
  • Landscape complexity
  • White-tailed bumblebee

Status

Published

Forskningsgrupp

  • Lund Vision Group
  • Biodiversity and Conservation Science

ISBN/ISSN/Övrigt

  • ISSN: 1439-1791