Polar Biology

, Volume 37, Issue 9, pp 1309–1320

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

Authors

    • Wildlife Conservation SocietyPacific West Office
    • Audubon Society of Portland
  • K. E. B. Gurney
    • Alaska Cooperative Fish and Wildlife Research Unit, Institute of Arctic BiologyUniversity of Alaska Fairbanks
  • M. Budde
    • Earth Resources Observation and Science (EROS) CenterU.S. Geological Survey
  • S. Zack
    • Wildlife Conservation SocietyPacific West Office
  • D. Ward
    • Alaska Science CenterU.S. Geological Survey
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

Arctic Climate change Clutch initiation Passerine Shorebird

Copyright information

© Springer-Verlag Berlin Heidelberg 2014