Proximate cues to phases of movement in a highly dispersive waterfowl, Anas superciliosa

Movement Ecology
John F McEvoyAndy T D Bennett

Abstract

Waterfowl can exploit distant ephemeral wetlands in arid environments and provide valuable insights into the response of birds to rapid environmental change, and behavioural flexibility of avian movements. Currently much of our understanding of behavioural flexibility of avian movement comes from studies of migration in seasonally predictable biomes in the northern hemisphere. We used GPS transmitters to track 20 Pacific black duck (Anas superciliosa) in arid central Australia. We exploited La Niña conditions that brought extensive flooding, so allowing a rare opportunity to investigate how weather and other environmental factors predict initiation of long distance movement toward freshly flooded habitats. We employed behavioural change point analysis to identify three phases of movement: sedentary, exploratory and long distance oriented movement. We then used random forest models to determine the ability of meteorological and remote sensed landscape variables to predict initiation of these phases. We found that initiation of exploratory movement phases is influenced by fluctuations in local weather conditions and accumulated rainfall in the landscape. Initiation of long distance movement phases was found to be highly individua...Continue Reading

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Citations

Jan 13, 2018·Ecology and Evolution·Patrick L McDermottJoshua Millspaugh
Jul 17, 2020·Environmental Toxicology and Chemistry·Simon SharpAndrea Hinwood
Aug 13, 2020·The Journal of Animal Ecology·Claire S TeitelbaumRichard J Hall
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May 2, 2021·The Science of the Total Environment·Cheng WangYanan Zhang

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Software Mentioned

BCPA
randomForest
R
RNCEP

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