Tracking climate impacts on the migratory monarch butterfly

© Published 2012. This article is a U.S Government work and is in the public domain in the USA.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 18(2012), 10 vom: 25. Okt., Seite 3039-3049
1. Verfasser: Zipkin, Elise F (VerfasserIn)
Weitere Verfasser: Ries, Leslie, Reeves, Rick, Regetz, James, Oberhauser, Karen S
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2012
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article Danaus plexippus Poisson regression model breeding habitat growing degree day palmer drought index phenology return migration
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520 |a Understanding the impacts of climate on migratory species is complicated by the fact that these species travel through several climates that may be changing in diverse ways throughout their complete migratory cycle. Most studies are not designed to tease out the direct and indirect effects of climate at various stages along the migration route. We assess the impacts of spring and summer climate conditions on breeding monarch butterflies, a species that completes its annual migration cycle over several generations. No single, broad-scale climate metric can explain summer breeding phenology or the substantial year-to-year fluctuations observed in population abundances. As such, we built a Poisson regression model to help explain annual arrival times and abundances in the Midwestern United States. We incorporated the climate conditions experienced both during a spring migration/breeding phase in Texas as well as during subsequent arrival and breeding during the main recruitment period in Ohio. Using data from a state-wide butterfly monitoring network in Ohio, our results suggest that climate acts in conflicting ways during the spring and summer seasons. High spring precipitation in Texas is associated with the largest annual population growth in Ohio and the earliest arrival to the summer breeding ground, as are intermediate spring temperatures in Texas. On the other hand, the timing of monarch arrivals to the summer breeding grounds is not affected by climate conditions within Ohio. Once in Ohio for summer breeding, precipitation has minimal impacts on overall abundances, whereas warmer summer temperatures are generally associated with the highest expected abundances, yet this effect is mitigated by the average seasonal temperature of each location in that the warmest sites receive no benefit of above average summer temperatures. Our results highlight the complex relationship between climate and performance for a migrating species and suggest that attempts to understand how monarchs will be affected by future climate conditions will be challenging 
650 4 |a Journal Article 
650 4 |a Danaus plexippus 
650 4 |a Poisson regression model 
650 4 |a breeding habitat 
650 4 |a growing degree day 
650 4 |a palmer drought index 
650 4 |a phenology 
650 4 |a return migration 
700 1 |a Ries, Leslie  |e verfasserin  |4 aut 
700 1 |a Reeves, Rick  |e verfasserin  |4 aut 
700 1 |a Regetz, James  |e verfasserin  |4 aut 
700 1 |a Oberhauser, Karen S  |e verfasserin  |4 aut 
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