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

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 mismatche...

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Main Authors: Senner, Nathan, Stager, Maria, Sandercock, Brett K.
Format: Article in Journal/Newspaper
Language:unknown
Published: 2016
Subjects:
Online Access:http://hdl.handle.net/10255/dryad.115682
https://doi.org/10.5061/dryad.d4m77
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spelling ftdryad:oai:v1.datadryad.org:10255/dryad.115682 2023-05-15T15:41:45+02:00 Data from: Ecological mismatches are moderated by local conditions in two populations of a long-distance migratory bird Senner, Nathan Stager, Maria Sandercock, Brett K. Manitoba Alaska 2016-05-12T17:52:28Z http://hdl.handle.net/10255/dryad.115682 https://doi.org/10.5061/dryad.d4m77 unknown doi:10.5061/dryad.d4m77/1 doi:10.5061/dryad.d4m77/2 doi:10.5061/dryad.d4m77/3 doi:10.5061/dryad.d4m77/4 doi:10.5061/dryad.d4m77/5 doi:10.1111/oik.03325 doi:10.5061/dryad.d4m77 Senner N, Stager M, Sandercock BK (2017) Ecological mismatches are moderated by local conditions in two populations of a long-distance migratory bird. Oikos 126(1): 61–72. 0030-1299 http://hdl.handle.net/10255/dryad.115682 climate change intraspecific variation migration timing population dynamics Article 2016 ftdryad https://doi.org/10.5061/dryad.d4m77 https://doi.org/10.5061/dryad.d4m77/1 https://doi.org/10.5061/dryad.d4m77/2 https://doi.org/10.5061/dryad.d4m77/3 https://doi.org/10.5061/dryad.d4m77/4 https://doi.org/10.5061/dryad.d4m77/5 https://doi.org/1 2020-01-01T15:34:46Z 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 abundance. Ecological mismatches thus resulted in a complex array of consequences, but nonetheless contributed to reductions in chick survival. In contrast, godwits at Beluga River hatched their chicks just before the invertebrate peak, such that the period of highest energetic need coincided with the period of highest invertebrate abundance. As a result, growth rates and survival of godwit chicks were unaffected by invertebrate abundance. Godwits at Beluga River were able to properly time their reproduction because of predictable rates of climatic change and strong selection imposed by high predation on late-hatched chicks. Taken together, our results suggest that population-specific, local-scale selection pressures play a critical role in determining the degree and severity of ecological mismatches. The potential for global climate change to induce species-level population declines may therefore be mediated by the spatial variation in the selection pressures acting across a species’ range. Article in Journal/Newspaper Beluga Beluga* Churchill Alaska Dryad Digital Repository (Duke University)
institution Open Polar
collection Dryad Digital Repository (Duke University)
op_collection_id ftdryad
language unknown
topic climate change
intraspecific variation
migration timing
population dynamics
spellingShingle climate change
intraspecific variation
migration timing
population dynamics
Senner, Nathan
Stager, Maria
Sandercock, Brett K.
Data from: Ecological mismatches are moderated by local conditions in two populations of a long-distance migratory bird
topic_facet climate change
intraspecific variation
migration timing
population dynamics
description 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 abundance. Ecological mismatches thus resulted in a complex array of consequences, but nonetheless contributed to reductions in chick survival. In contrast, godwits at Beluga River hatched their chicks just before the invertebrate peak, such that the period of highest energetic need coincided with the period of highest invertebrate abundance. As a result, growth rates and survival of godwit chicks were unaffected by invertebrate abundance. Godwits at Beluga River were able to properly time their reproduction because of predictable rates of climatic change and strong selection imposed by high predation on late-hatched chicks. Taken together, our results suggest that population-specific, local-scale selection pressures play a critical role in determining the degree and severity of ecological mismatches. The potential for global climate change to induce species-level population declines may therefore be mediated by the spatial variation in the selection pressures acting across a species’ range.
format Article in Journal/Newspaper
author Senner, Nathan
Stager, Maria
Sandercock, Brett K.
author_facet Senner, Nathan
Stager, Maria
Sandercock, Brett K.
author_sort Senner, Nathan
title Data from: Ecological mismatches are moderated by local conditions in two populations of a long-distance migratory bird
title_short Data from: Ecological mismatches are moderated by local conditions in two populations of a long-distance migratory bird
title_full Data from: Ecological mismatches are moderated by local conditions in two populations of a long-distance migratory bird
title_fullStr Data from: Ecological mismatches are moderated by local conditions in two populations of a long-distance migratory bird
title_full_unstemmed Data from: Ecological mismatches are moderated by local conditions in two populations of a long-distance migratory bird
title_sort data from: ecological mismatches are moderated by local conditions in two populations of a long-distance migratory bird
publishDate 2016
url http://hdl.handle.net/10255/dryad.115682
https://doi.org/10.5061/dryad.d4m77
op_coverage Manitoba
Alaska
genre Beluga
Beluga*
Churchill
Alaska
genre_facet Beluga
Beluga*
Churchill
Alaska
op_relation doi:10.5061/dryad.d4m77/1
doi:10.5061/dryad.d4m77/2
doi:10.5061/dryad.d4m77/3
doi:10.5061/dryad.d4m77/4
doi:10.5061/dryad.d4m77/5
doi:10.1111/oik.03325
doi:10.5061/dryad.d4m77
Senner N, Stager M, Sandercock BK (2017) Ecological mismatches are moderated by local conditions in two populations of a long-distance migratory bird. Oikos 126(1): 61–72.
0030-1299
http://hdl.handle.net/10255/dryad.115682
op_doi https://doi.org/10.5061/dryad.d4m77
https://doi.org/10.5061/dryad.d4m77/1
https://doi.org/10.5061/dryad.d4m77/2
https://doi.org/10.5061/dryad.d4m77/3
https://doi.org/10.5061/dryad.d4m77/4
https://doi.org/10.5061/dryad.d4m77/5
https://doi.org/1
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