Changing Migratory Behaviors and Climatic Responsiveness in Birds

被引:10
作者
Bokony, Veronika [1 ]
Berta, Zoltan [2 ]
Vegvari, Zsolt [3 ]
机构
[1] Hungarian Acad Sci, Plant Protect Inst, Ctr Agr Res, Lendulet Evolutionary Ecol Res Grp, Budapest, Hungary
[2] Univ Debrecen, Dept Evolutionary Zool, MTA DE Behav Ecol Res Grp, Debrecen, Hungary
[3] Univ Debrecen Hortobagy, Hortobagy Natl Pk Directorate, Dept Conservat Zool, Debrecen, Hungary
来源
FRONTIERS IN ECOLOGY AND EVOLUTION | 2019年 / 7卷
关键词
migration phenology; overwinter residency; population trends; Hortobagy; waterbirds; NORTH-ATLANTIC OSCILLATION; AVIAN SPRING MIGRATION; PHYLOGENETIC ANALYSIS; PREDICTS ADVANCEMENT; PHENOLOGICAL CHANGES; ARRIVAL DATES; LONG-DISTANCE; TEMPERATURE; SENSITIVITY; EVOLUTION;
D O I
10.3389/fevo.2019.00089
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Change of avian migratory behavior is one of the best-studied phenomena presumably associated with contemporary climate change, yet to what degree these behavioral changes represent responses to climate warming is still controversial. We investigated interspecific variation in migratory behavior over three decades at a Central-European site, testing whether the type and extent of behavioral change are predicted by species' responsiveness to short-term variation in large-scale climatic indices. We found that species with earlier arrivals at the breeding grounds after winters with higher North-Atlantic Oscillation indices were more likely to overwinter at the study site. This behavior was more frequent in the second half than in the first half of the study, although the extent of this change was not predicted quantitatively by short-term climatic responsiveness. Overwintering was more prevalent in short-distance migrants with more complex diets and larger population sizes. Furthermore, species arriving earlier after summers with higher Sahel rainfall indices increasingly advanced their first arrival date, whereas species that do not molt in the pre-breeding season increased their frequency of overwintering in more recent years. Our results demonstrate that interspecific variation in short-term climatic responsiveness predicts long-term changes in migratory behaviors, supporting that the latter are responses to climate change. Furthermore, the type of response (advancing arrivals or overwintering near the breeding grounds) depends on life history. Finally, we found that overwintering behavior during the study period predicted subsequent trends in population size, suggesting that information on temporal changes in migratory strategy may help conservation planning and risk assessment.
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页数:12
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