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  1. No Access

    Chapter

    Ingestion of Plastics by Marine Organisms

    Many marine organisms ingest plastic items, providing a potential mechanism for the transfer and accumulation of hazardous chemicals associated with plastics. This chapter summarises the range of organisms kno...

    Peter G. Ryan in Hazardous Chemicals Associated with Plastics in the Marine Environment (2019)

  2. No Access

    Article

    The foraging range of Great Shearwaters (Ardenna gravis) breeding on Gough Island

    Ardenna shearwaters have among the most extreme foraging trips of any central place forager, yet little is known about the foraging range of the largest member of the genus, the Great Shearwater (Ardenna gravis)....

    Stefan Schoombie, Ben J. Dilley, Delia Davies, Peter G. Ryan in Polar Biology (2018)

  3. No Access

    Article

    Status and trends of albatrosses in the French Southern Territories, Western Indian Ocean

    Today albatrosses are threatened worldwide, especially by fishing activities, and many populations are currently in decline. Albatrosses breeding at the French Southern Territories in the south-western Indian ...

    Henri Weimerskirch, Karine Delord, Christophe Barbraud, Fabrice Le Bouard in Polar Biology (2018)

  4. No Access

    Article

    Antarctica’s ecological isolation will be broken by storm-driven dispersal and warming

    Antarctica has long been considered biologically isolated1. Global warming will make parts of Antarctica more habitable for invasive taxa, yet presumed barriers to dispersal—especially the Southern Ocean’s strong...

    Ceridwen I. Fraser, Adele K. Morrison, Andrew McC Hogg in Nature Climate Change (2018)

  5. Article

    Open Access

    A non-invasive approach to estimate the energetic requirements of an increasing seabird population in a perturbed marine ecosystem

    There is a growing desire to integrate the food requirements of predators living in marine ecosystems impacted by humans into sustainable fisheries management. We used non-invasive video-recording, photography...

    Davide Gaglio, Richard B. Sherley, Peter G. Ryan, Timothée R. Cook in Scientific Reports (2018)

  6. No Access

    Article

    Effects of age, sex, colony and breeding phase on marine space use by Great Shearwaters Ardenna gravis in the South Atlantic

    Shearwaters are among the most abundant seabirds globally and breeding birds often travel thousands of kilometres during foraging trips to productive marine areas. Great Shearwaters Ardenna gravis are endemic bre...

    Robert A. Ronconi, Stefan Schoombie, Andrew J. Westgate, Sarah N. P. Wong in Marine Biology (2018)

  7. No Access

    Article

    Westward range extension of Short-tailed Shearwaters Ardenna tenuirostris in the Southern Ocean

    Short-tailed Shearwaters Ardenna tenuirostris are transequatorial migrants that breed at islands in southern Australia and spend the austral winter in the North Pacific. Adults feeding chicks undertake long forag...

    Peter G. Ryan, Fabrice Le Bouard, Jasmine Lee in Polar Biology (2017)

  8. No Access

    Article

    Wandering Albatross Diomedea exulans breeding phenology at Marion Island

    South Africa’s Prince Edward Islands support a large proportion (44 %) of the global Wandering Albatross Diomedea exulans breeding population, yet most breeding phenology data are recorded from smaller and geogra...

    M. Genevieve W. Jones, Ben J. Dilley, Quentin A. Hagens, Henk Louw in Polar Biology (2017)

  9. Article

    Open Access

    Identification of animal movement patterns using tri-axial magnetometry

    Accelerometers are powerful sensors in many bio-logging devices, and are increasingly allowing researchers to investigate the performance, behaviour, energy expenditure and even state, of free-living animals. ...

    Hannah J. Williams, Mark D. Holton, Emily L. C. Shepard, Nicola Largey in Movement Ecology (2017)

  10. No Access

    Article

    Modest increases in densities of burrow-nesting petrels following the removal of cats (Felis catus) from Marion Island

    Introduced predators are one of the main threats facing seabirds breeding on oceanic islands. Cats (Felis catus) were introduced to subantarctic Marion Island (290 km2) in 1949, and by the 1970s some 2000 cats we...

    Ben J. Dilley, Michael Schramm, Peter G. Ryan in Polar Biology (2017)

  11. No Access

    Article

    Cranes and Crops: Investigating Farmer Tolerances toward Crop Damage by Threatened Blue Cranes (Anthropoides paradiseus) in the Western Cape, South Africa

    The Western Cape population of Blue Cranes (Anthropoides paradiseus) in South Africa is of great importance as the largest population throughout its range. However, Blue Cranes are strongly associated with agricu...

    Julia L. van Velden, Tanya Smith, Peter G. Ryan in Environmental Management (2016)

  12. Article

    Erratum to: Starving seabirds: unprofitable foraging and its fitness consequences in Cape gannets competing with fisheries in the Benguela upwelling ecosystem

    David Grémillet, Clara Péron, Akiko Kato, Françoise Amélineau in Marine Biology (2016)

  13. Article

    Open Access

    Proximate drivers of spatial segregation in non-breeding albatrosses

    Many animals partition resources to avoid competition and in colonially-breeding species this often leads to divergent space or habitat use. During the non-breeding season, foraging constraints are relaxed, ye...

    Thomas A. Clay, Andrea Manica, Peter G. Ryan, Janet R. D. Silk in Scientific Reports (2016)

  14. No Access

    Article

    The role of eddies in the diving behaviour of female southern elephant seals

    As the Antarctic Circumpolar Current crosses the South-West Indian Ocean Ridge, it creates an extensive eddy field characterised by high sea level anomaly variability. We investigated the diving behaviour of f...

    Philip P. Massie, Trevor McIntyre, Peter G. Ryan, Marthán N. Bester in Polar Biology (2016)

  15. No Access

    Article

    Starving seabirds: unprofitable foraging and its fitness consequences in Cape gannets competing with fisheries in the Benguela upwelling ecosystem

    Fisheries are often accused of starving vulnerable seabirds, yet evidence for this claim is scarce. Foraging energetics may provide efficient, short-term indicators of the fitness status of seabirds competing...

    David Grémillet, Clara Péron, Akiko Kato, Françoise Amélineau in Marine Biology (2016)

  16. Article

    Open Access

    Quantifying variation in δ 13C and δ 15N isotopes within and between feathers and individuals: Is one sample enough?

    Studies of avian migration increasingly use stable isotope analysis to provide vital trophic and spatial markers. However, when interpreting differences in stable isotope values of feathers, many studies are ...

    W. James Grecian, Rona A. R. McGill, Richard A. Phillips, Peter G. Ryan in Marine Biology (2015)

  17. Chapter

    A Brief History of Marine Litter Research

    This chapter traces the history of marine litter research from anecdotal reports of entanglement and plastic ingestion in the 1960s to the current focus on microplastics and their role in the transfer of persi...

    Peter G. Ryan in Marine Anthropogenic Litter (2015)

  18. No Access

    Article

    The effect of parental age, experience and historical reproductive success on wandering albatross (Diomedea exulans) chick growth and survival

    Growth and survival of altricial young are influenced by their parents’ abilities to invest in a breeding attempt. As a result, chick growth and survival in one breeding season may be indicative of their paren...

    M. Genevieve W. Jones, Ben J. Dilley, Quentin A. Hagens, Henk Louw in Polar Biology (2014)

  19. No Access

    Article

    The occurrence of two bill morphs of prions Pachyptila vittata on Gough Island

    Prions Pachyptila are abundant seabirds in the Southern Ocean that have been used to infer environmental change, but this relies on an understanding of their morphological diversity. Species limits among prions a...

    Peter G. Ryan, Karen Bourgeois, Sylvain Dromzée, Ben J. Dilley in Polar Biology (2014)

  20. No Access

    Article

    Giant petrels as predators of albatross chicks

    Giant petrels Macronectes spp. are not thought to be important predators of albatross chicks, although they are known to kill pre-fledging Thalassarche and Phoebetria albatrosses. We report the first records of p...

    Ben J. Dilley, Delia Davies, Maëlle Connan, John Cooper in Polar Biology (2013)

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