The Karner blue butterfly (Lycaeides melissa samuelis ) is an endangered species living in fragmented landscapes within the Midwest and Eastern U.S. Being a specialist feeder and ectotherm, the Karner blue may be highly susceptible to climate change. Therefore, we pursued several experiments to explore its climate change sensitivity.
Warming caused earlier emergence and accelerated development, which lead to additional generations and lower degree-day accumulation. Adult mass and size decreased among the highest warming treatment, and with additional generations. Smaller mass and body size females produced fewer eggs. Additional flights experienced smaller population sizes and lower egg outputs. Lastly, we found that higher temperatures limited flight activity.
Based on these findings, we suggest assisting populations during years of phenological mismatch, managing protected areas as novel ecosystems, and practicing adaptive management. We suggest that land managers can draw on vulnerability assessments that evaluate a species’ resistance and resilience to climate change.
|Advisor:||Hellmann, Jessia J.|
|Commitee:||Feder, Jeffrey, Hellmann, Jessica J., McLachlan, Jason|
|School:||University of Notre Dame|
|School Location:||United States -- Indiana|
|Source:||MAI 58/03M(E), Masters Abstracts International|
|Subjects:||Ecology, Entomology, Conservation biology|
|Keywords:||Climate change, Development and physiology, Endangered species, Entomology, Management implications, Vulnerability assessment|
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