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Climate variability and breeding parameters of a transhemispheric migratory seabird over seven decades
journal contribution
posted on 2023-05-20, 21:12 authored by Cassandra PriceCassandra Price, Klaas HartmannKlaas Hartmann, Timothy EmeryTimothy Emery, Woehler, EJ, Clive McMahonClive McMahon, Mark HindellMark HindellClimate 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 Nino-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.
Funding
Holsworth Wildlife Research Endowment
History
Publication title
Marine Ecology Progress SeriesVolume
642Pagination
191-205ISSN
0171-8630Department/School
Institute for Marine and Antarctic StudiesPublisher
Inter-ResearchPlace of publication
Nordbunte 23, Oldendorf Luhe, Germany, D-21385Rights statement
© Inter-Research 2020Repository Status
- Restricted