Data from: Ecological mismatches are moderated by local conditions in two populations of a long-distance migratory bird ...

• Main Authors: Senner, Nathan, Stager, Maria, Sandercock, Brett K., Senner, Nathan R.
• Format: Dataset
• Language: English
• Published: Dryad 2016
• Subjects: Limosa haemastica; migration timing; Beluga; Beluga*; Churchill; Alaska
• Online Access: https://dx.doi.org/10.5061/dryad.d4m77; https://datadryad.org/stash/dataset/doi:10.5061/dryad.d4m77

Ecological mismatches between reproductive events and seasonal resource peaks are frequently proposed to be a key driver of population dynamics resulting from global climate change. Many local populations are experiencing reduced reproductive success as a consequence of mismatches, but few mismatches have led to species-level population declines. To better understand this apparent paradox, we investigated the breeding phenology and chick survival of two disjunct populations of Hudsonian godwits Limosa haemastica breeding at Churchill, Manitoba and Beluga River, Alaska. Only one population experienced a mismatch: godwits bred nearly one week after the onset of the invertebrate peak at Churchill because of asynchronous climatic change occurring throughout their annual cycle. However, chicks were not uniformly affected by the mismatch — growth rates and survival of young chicks were not correlated with invertebrate abundance, but older chicks tended to suffer lower survival rates on days of low invertebrate ... : Nest Data Churchill and Beluga 2009-2012This file can be used in Program Mark to determine the nest survival rates of Hudsonian Godwits, Limosa haemastica, breeding in Beluga River, Alaska and Churchill, Manitoba from 2009-2011. The file includes the nest ID number, the first date on which each nest was found, the date on which it was last known to be alive, and the date on which its fate was complete (e.g., alive or dead). The final column denotes the nest's fate (0 = hatched, 1 = failed).Chick Data Churchill and Beluga 2009-2012This file can be used in Program Mark to determine the survival rates of Hudsonian Godwit, Limosa haemastica, chicks hatched in Beluga River, Alaska and Churchill, Manitoba from 2009-2011. The first column is the site at which a chick was hatched (CH = Churchill, BR = Beluga River); the second the year in which it was hatched; the third the nest from which it hatched, which corresponds to the nests in the Nest Date file; the fourth the chick's unique flag code; and then the date on ...