Short-tailed shearwater, Ardenna tenuirostris, trophic levels, lag, longitudinal study, seabird harvest ...

• Main Author: Price, CA
• Format: Thesis
• Language: unknown
• Published: University Of Tasmania 2023
• Subjects: Austral; Pacific; Puffinus tenuirostris
• Online Access: https://dx.doi.org/10.25959/23250506; https://figshare.utas.edu.au/articles/thesis/Short-tailed_shearwater_Ardenna_tenuirostris_trophic_levels_lag_longitudinal_study_seabird_harvest/23250506

Environmental variations play an important role in the population dynamics of seabirds, as they influence key aspects such as survival and individual breeding success. Oscillating climatic conditions (e.g. the Pacific Decadal Oscillation [PDO] and the El Ni‚àö¬±o‚Äöv†v¿Southern Oscillation [ENSO]) dramatically alter marine productivity, both spatially and temporally. Unpredictable environmental conditions result in prey distributions that are highly variable, patchy and unpredictable, which influences the foraging behaviour of marine predators. Small changes in oceanographic conditions can adversely affect primary productivity and therefore influence seabird foraging success, including that of the short-tailed shearwater. The short-tailed shearwater (Ardenna tenuirostris, previously known as Puffinus tenuirostris) is a transhemispheric migratory seabird that breeds only in south-eastern Australia and migrates to the northern Pacific Ocean for the austral winter (Skira 1996). They are commonly known as the ...