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Carravieri Alice, Weimerskirch Henri, Bustamante Paco, Cherel Yves. (2017). Progressive ontogenetic niche shift over the prolonged immaturity period of wandering albatrosses (Vol. 4).
Abstract: Very little is known about trophic ontogenetic changes over the prolonged immaturity period of long-lived, wide-ranging seabirds. By using blood and feather trophic tracers (?13C and ?15N, and mercury, Hg), we studied age-related changes in feeding ecology during the immature phase of wandering albatrosses Diomedea exulans when they gradually change from a pure oceanic life to visits to their future breeding grounds. Immatures fed in subtropical waters at high trophic positions during moult. Between- and within-individual variations in isotopic niche were very high, irrespective of age, highlighting wide-ranging exploratory behaviours. In summer, while acting as central-place foragers from their future breeding colony, individuals progressively relied on lower trophic level prey and/or southern latitudes as they aged, until occupying a similar isotopic niche to that of adults. Immatures had exceptionally high Hg burdens, with males having lower Hg concentrations than females, suggesting that they foraged more in subantarctic waters. Our findings suggest a progressive ontogenetic niche shift during central-place foraging of this long-lived species.
Programme: 109
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. (2018). Sperm collection in Black-legged Kittiwakes and characterization of sperm velocity and morphology (Vol. 9).
Abstract: Collecting and studying live sperm is central to many important fields of biology. Yet, a simple method to collect live sperm is lacking in wild seabird species. Here, we describe a non-invasive method to collect viable sperm samples based on a simple massage technique applied to male Black-legged Kittiwakes (Rissa tridactyla).
Programme: 330
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Roquet Fabien, Williams Guy, Hindell Mark A, Harcourt Rob, McMahon Clive, Guinet Christophe, Charrassin Jean-Benoit, Reverdin Gilles, Boehme Lars, Lovell Phil, Fedak Mike, . (2014). A Southern Indian Ocean database of hydrographic profiles obtained with instrumented elephant seals.
. Scientific data, 1, 140028.
Keywords: Animals, Databases, Factual, Indian Ocean, Oceanography, Oceanography: methods, Seals, Earless,
Programme: 109
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. (2020). The retrospective analysis of Antarctic tracking data project (Vol. 7). Bachelor's thesis, , .
Abstract: The Retrospective Analysis of Antarctic Tracking Data (RAATD) is a Scientific Committee for Antarctic Research project led jointly by the Expert Groups on Birds and Marine Mammals and Antarctic Biodiversity Informatics, and endorsed by the Commission for the Conservation of Antarctic Marine Living Resources. RAATD consolidated tracking data for multiple species of Antarctic meso- and top-predators to identify Areas of Ecological Significance. These datasets and accompanying syntheses provide a greater understanding of fundamental ecosystem processes in the Southern Ocean, support modelling of predator distributions under future climate scenarios and create inputs that can be incorporated into decision making processes by management authorities. In this data paper, we present the compiled tracking data from research groups that have worked in the Antarctic since the 1990s. The data are publicly available through biodiversity.aq and the Ocean Biogeographic Information System. The archive includes tracking data from over 70 contributors across 12 national Antarctic programs, and includes data from 17 predator species, 4060 individual animals, and over 2.9 million observed locations.
Programme: 109,1091,1201
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. (2015). Influence of oceanographic structures on foraging strategies: Macaroni penguins at Crozet Islands.
. Movement ecology, 3(1), 32.
Abstract: BACKGROUND: In the open ocean, eddies and associated structures (fronts, filaments) have strong influences on the foraging activities of top-predators through the enhancement and the distribution of marine productivity, zooplankton and fish communities. Investigating how central place foragers, such as penguins, find and use these physical structures is crucial to better understanding their at-sea distribution. In the present study, we compared the travel heading and speed of the world's most abundant penguin, the Macaroni penguin (Eudyptes chrysolophus), with the distribution of surface physical structures (large-scale fronts, eddies and filaments).
Programme: 394
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. (2015). Movement ecology, 3(1), 30.
Keywords: Nature Conservation,
Programme: 1091
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. (2016). Effects of geolocators on hatching success, return rates, breeding movements, and change in body mass in 16 species of Arctic-breeding shorebirds (Vol. 4).
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. (2017). Three-dimensional space use during the bottom phase of southern elephant seal dives (Vol. 5).
Abstract: In marine pelagic ecosystems, the spatial distribution of biomass is heterogeneous and dynamic. At large scales, physical processes are the main driving forces of biomass distribution. At fine scales, both biotic and abiotic parameters are likely to be key determinants in the horizontal and vertical distribution of biomass, with direct consequences on the foraging behaviour of diving predators. However, fine scale three-dimensional (3D) spatial interactions between diving predators and their prey are still poorly known.
Programme: 109
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Petra Quillfeldt, Henri Weimerskirch, Juan F. Masello, Karine Delord, Rona A. R. McGill, Robert W. Furness, Yves Cherel. (2019). Behavioural plasticity in the early breeding season of pelagic seabirds – a case study of thin-billed prions from two oceans (Vol. 7).
Abstract: In long-lived seabirds that migrate large distances independently of each other, the early part of the breeding season is crucially important for a successful reproductive attempt. During this phase, pair bonds are re-established and partners coordinate their breeding duties. We studied the early breeding season in Thin-billed prions Pachyptila belcheri breeding in the Atlantic Ocean (Falkland/Malvinas Islands) and Indian Ocean (Kerguelen). Despite overlap in the wintering areas, these two populations exhibit differences in their timing and direction of migration. We hypothesised that these differences would influence behaviour during the early breeding season.
Programme: 109
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. (2019). Exploration during early life: distribution, habitat and orientation preferences in juvenile king penguins (Vol. 7). Bachelor's thesis, , .
Abstract: The early life of marine apex predators is poorly known, particularly for diving species. The orientation and foraging skills are presumably less developed in juveniles than in adults, especially during their first year at sea when juveniles might disperse further than adults.
Programme: 109,394
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