Anthropogenic climate change poses substantial challenges to biodiversity conservation. Effects of climate change on summer conditions and associated heat and desiccation stress have attracted much research interest, while the implications of changing winter conditions on hibernation have hitherto received fairly little attention. This is surprising as the latter may also strongly affect biodiversity. By investigating the effects of overwintering conditions on diapause and postdiapause survival in a temperate-zone butterfly, we found that warmer and moister winter conditions substantially decreased survival rates. However, detrimental effects were restricted to survival during diapause and subsequent development and had no clear effects on butterfly performance. We suggest that overwintering survival is an important driver of vulnerability to climate change. Our study stresses the importance of collating more data on overwintering survival in species with different hibernation strategies to predict the impact of ongoing climate change on biodiversity.
Ernst Moritz Arndt Univ Greifswald, Museum & Inst Zool, Johann Sebastian Bach Str 11-12, D-17489 Greifswald, Germany
Recommended Citation:
Klockmann, Michael,Fischer, Klaus. Strong reduction in diapause survival under warm and humid overwintering conditions in a temperate-zone butterfly[J]. POPULATION ECOLOGY,2019-01-01,61(2):150-159