Climate variability and breeding parameters of a transhemispheric migratory seabird over seven decades

Climate variability affects physical oceanographic systems and environmental conditions at multiple spatial and temporal scales. These changes can influence biological and eco-logical processes, from primary productivity to higher trophic levels. Short-tailed shearwaters Ardenna tenuirostris are tra...

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Bibliographic Details
Published in:Marine Ecology Progress Series
Main Authors: Price, Cassandra A., Hartmann, Klaas, Emery, Timothy J., Woehler, Eric J., McMahon, Clive R., Hindell, Mark A.
Format: Article in Journal/Newspaper
Language:English
Published: 2020
Subjects:
Ardenna tenuirostris
Lag
Longitudinal study
Short-tailed shearwater
Trophic levels
Pacific
Fisher Island
Online Access:https://researchers.mq.edu.au/en/publications/0a06ed16-f6d6-4001-8d20-f843219e61ec
https://doi.org/10.3354/meps13328
http://www.scopus.com/inward/record.url?scp=85091969993&partnerID=8YFLogxK
Description
Summary:Climate variability affects physical oceanographic systems and environmental conditions at multiple spatial and temporal scales. These changes can influence biological and eco-logical processes, from primary productivity to higher trophic levels. Short-tailed shearwaters Ardenna tenuirostris are transhemispheric migratory procellariiform seabirds that forage on secondary consumers such as fish (myctophids) and zooplankton (euphausiids). In this study, we investigated the breeding parameters of the short-tailed shearwater from a colony of 100 to 200 breeding pairs at Fisher Island, Tasmania, Australia, for the period 1950 to 2012, with the aim to quantify the relationship between breeding parameters with large-scale climate indices in the Northern (i.e. Northern Pacific Index and Pacific Decadal Oscillation) and Southern Hemispheres (i.e. El Ninõ-Southern Oscillation and Southern Annular Mode). Through the use of generalised linear models, we found that breeding participation among short-tailed shearwaters was affected by climate variability with a 12-mo temporal lag. Furthermore, breeding success decreased in years of increased rainfall at the colony. These findings demonstrate that both large-scale climate indices and local environmental conditions could explain some of the variability among breeding parameters of the short-tailed shearwater.

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