Polar Biology

, Volume 37, Issue 9, pp 1309–1320

Phenological advancement in arctic bird species: relative importance of snow melt and ecological factors

  • J. R. Liebezeit
  • K. E. B. Gurney
  • M. Budde
  • S. Zack
  • D. Ward
Original Paper

DOI: 10.1007/s00300-014-1522-x

Cite this article as:
Liebezeit, J.R., Gurney, K.E.B., Budde, M. et al. Polar Biol (2014) 37: 1309. doi:10.1007/s00300-014-1522-x

Abstract

Previous studies have documented advancement in clutch initiation dates (CIDs) in response to climate change, most notably for temperate-breeding passerines. Despite accelerated climate change in the Arctic, few studies have examined nest phenology shifts in arctic breeding species. We investigated whether CIDs have advanced for the most abundant breeding shorebird and passerine species at a long-term monitoring site in arctic Alaska. We pooled data from three additional nearby sites to determine the explanatory power of snow melt and ecological variables (predator abundance, green-up) on changes in breeding phenology. As predicted, all species (semipalmated sandpiper, Calidris pusilla, pectoral sandpiper, Calidris melanotos, red-necked phalarope, Phalaropus lobatus, red phalarope, Phalaropus fulicarius, Lapland longspur, Calcarius lapponicus) exhibited advanced CIDs ranging from 0.40 to 0.80 days/year over 9 years. Timing of snow melt was the most important variable in explaining clutch initiation advancement (“climate/snow hypothesis”) for four of the five species, while green-up was a much less important explanatory factor. We found no evidence that high predator abundances led to earlier laying dates (“predator/re-nest hypothesis”). Our results support previous arctic studies in that climate change in the cryosphere will have a strong impact on nesting phenology although factors explaining changes in nest phenology are not necessarily uniform across the entire Arctic. Our results suggest some arctic-breeding shorebird and passerine species are altering their breeding phenology to initiate nesting earlier enabling them to, at least temporarily, avoid the negative consequences of a trophic mismatch.

Keywords

ArcticClimate changeClutch initiationPasserineShorebird

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • J. R. Liebezeit
    • 1
    • 5
  • K. E. B. Gurney
    • 2
  • M. Budde
    • 3
  • S. Zack
    • 1
  • D. Ward
    • 4
  1. 1.Wildlife Conservation SocietyPacific West OfficePortlandUSA
  2. 2.Alaska Cooperative Fish and Wildlife Research Unit, Institute of Arctic BiologyUniversity of Alaska FairbanksFairbanksUSA
  3. 3.Earth Resources Observation and Science (EROS) CenterU.S. Geological SurveySioux FallsUSA
  4. 4.Alaska Science CenterU.S. Geological SurveyAnchorageUSA
  5. 5.Audubon Society of PortlandPortlandUSA