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Introduced species and extreme weather as key drivers of reproductive output in three sympatric albatrosses

Citation

Cleeland, JB and Pardo, D and Raymond, B and Terauds, A and Alderman, R and McMahon, CR and Phillips, RA and Lea, M-A and Hindell, MA, Introduced species and extreme weather as key drivers of reproductive output in three sympatric albatrosses, Scientific Reports, 10, (1) Article 8199. ISSN 2045-2322 (2020) [Refereed Article]


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Copyright 2020 The Authors. This article is licensed under a Creative Commons Attribution 4.0 International License

DOI: doi:10.1038/s41598-020-64662-5

Abstract

Invasive species present a major conservation threat globally and nowhere are their affects more pronounced than in island ecosystems. Determining how native island populations respond demographically to invasive species can provide information to mitigate the negative effects of invasive species. Using 20 years of mark-recapture data from three sympatric species of albatrosses (black-browed Thalassarche melanophris, grey-headed T. chrysostoma, and light-mantled albatrosses Phoebetria palpebrata), we quantified the influence of invasive European rabbits Oryctolagus cuniculus and extreme weather patterns on breeding probability and success. Temporal variability in rabbit density explained 3376% of the variability in breeding probability for all three species, with severe decreases in breeding probability observed after a lag period following highest rabbit numbers. For black-browed albatrosses, the combination of extreme rainfall and high rabbit density explained 33% of total trait variability and dramatically reduced breeding success. We showed that invasive rabbits and extreme weather events reduce reproductive output in albatrosses and that eliminating rabbits had a positive effect on albatross reproduction. This illustrates how active animal management at a local breeding site can result in positive population outcomes even for wide ranging animals like albatrosses where influencing vital rates during their at-sea migrations is more challenging.

Item Details

Item Type:Refereed Article
Keywords:Southern Ocean, tracking, management
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Behavioural ecology
Objective Division:Environmental Management
Objective Group:Coastal and estuarine systems and management
Objective Field:Assessment and management of coastal and estuarine ecosystems
UTAS Author:Cleeland, JB (Dr Jaimie Cleeland)
UTAS Author:Raymond, B (Dr Ben Raymond)
UTAS Author:McMahon, CR (Dr Clive McMahon)
UTAS Author:Lea, M-A (Associate Professor Mary-Anne Lea)
UTAS Author:Hindell, MA (Professor Mark Hindell)
ID Code:142220
Year Published:2020
Web of Science® Times Cited:2
Deposited By:Ecology and Biodiversity
Deposited On:2020-12-23
Last Modified:2021-02-23
Downloads:4 View Download Statistics

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