Winter body mass and over-ocean flocking as components of danger management by Pacific dunlins ...
Background: We compared records of the body mass and roosting behavior of Pacific dunlins (Calidris alpina pacifica) wintering on the Fraser River estuary in southwest British Columbia between the 1970s and the 1990s. 'Over-ocean flocking' is a relatively safe but energetically-expensive a...
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ftdatacite:10.14288/1.0223421 2024-04-28T08:15:07+00:00 Winter body mass and over-ocean flocking as components of danger management by Pacific dunlins ... Ydenberg, Ronald C Dekker, Dick Kaiser, Gary Shepherd, Philippa C Ogden, Evans L Rickards, Karen Lank, David B 2016 https://dx.doi.org/10.14288/1.0223421 https://doi.library.ubc.ca/10.14288/1.0223421 en eng BioMed Central https://dx.doi.org/10.1186/1472-6785-10-1 article-journal Text ScholarlyArticle 2016 ftdatacite https://doi.org/10.14288/1.022342110.1186/1472-6785-10-1 2024-04-02T09:52:39Z Background: We compared records of the body mass and roosting behavior of Pacific dunlins (Calidris alpina pacifica) wintering on the Fraser River estuary in southwest British Columbia between the 1970s and the 1990s. 'Over-ocean flocking' is a relatively safe but energetically-expensive alternative to roosting during the high tide period. Fat stores offer protection against starvation, but are a liability in escape performance, and increase flight costs. Peregrine falcons (Falco peregrinus) were scarce on the Fraser River estuary in the 1970s, but their numbers have since recovered, and they prey heavily on dunlins. The increase has altered the balance between predation and starvation risks for dunlins, and thus how dunlins regulate roosting behavior and body mass to manage the danger. We therefore predicted an increase in the frequency of over-ocean flocking as well as a decrease in the amount of fat carried by dunlins over these decades. Results: Historical observations indicate that over-ocean flocking ... Text Calidris alpina Falco peregrinus DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
English |
description |
Background: We compared records of the body mass and roosting behavior of Pacific dunlins (Calidris alpina pacifica) wintering on the Fraser River estuary in southwest British Columbia between the 1970s and the 1990s. 'Over-ocean flocking' is a relatively safe but energetically-expensive alternative to roosting during the high tide period. Fat stores offer protection against starvation, but are a liability in escape performance, and increase flight costs. Peregrine falcons (Falco peregrinus) were scarce on the Fraser River estuary in the 1970s, but their numbers have since recovered, and they prey heavily on dunlins. The increase has altered the balance between predation and starvation risks for dunlins, and thus how dunlins regulate roosting behavior and body mass to manage the danger. We therefore predicted an increase in the frequency of over-ocean flocking as well as a decrease in the amount of fat carried by dunlins over these decades. Results: Historical observations indicate that over-ocean flocking ... |
format |
Text |
author |
Ydenberg, Ronald C Dekker, Dick Kaiser, Gary Shepherd, Philippa C Ogden, Evans L Rickards, Karen Lank, David B |
spellingShingle |
Ydenberg, Ronald C Dekker, Dick Kaiser, Gary Shepherd, Philippa C Ogden, Evans L Rickards, Karen Lank, David B Winter body mass and over-ocean flocking as components of danger management by Pacific dunlins ... |
author_facet |
Ydenberg, Ronald C Dekker, Dick Kaiser, Gary Shepherd, Philippa C Ogden, Evans L Rickards, Karen Lank, David B |
author_sort |
Ydenberg, Ronald C |
title |
Winter body mass and over-ocean flocking as components of danger management by Pacific dunlins ... |
title_short |
Winter body mass and over-ocean flocking as components of danger management by Pacific dunlins ... |
title_full |
Winter body mass and over-ocean flocking as components of danger management by Pacific dunlins ... |
title_fullStr |
Winter body mass and over-ocean flocking as components of danger management by Pacific dunlins ... |
title_full_unstemmed |
Winter body mass and over-ocean flocking as components of danger management by Pacific dunlins ... |
title_sort |
winter body mass and over-ocean flocking as components of danger management by pacific dunlins ... |
publisher |
BioMed Central |
publishDate |
2016 |
url |
https://dx.doi.org/10.14288/1.0223421 https://doi.library.ubc.ca/10.14288/1.0223421 |
genre |
Calidris alpina Falco peregrinus |
genre_facet |
Calidris alpina Falco peregrinus |
op_relation |
https://dx.doi.org/10.1186/1472-6785-10-1 |
op_doi |
https://doi.org/10.14288/1.022342110.1186/1472-6785-10-1 |
_version_ |
1797580875985059840 |