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Monti F, Robert A, Dominici JM, Sforzi A, Bagur RT, Navarro AM, Guillou G, Duriez O, Bentaleb I. Using GPS tracking and stable multi-isotopes for estimating habitat use and winter range in Palearctic ospreys. Oecologia 2021; 195:655-666. [PMID: 33475782 PMCID: PMC7940332 DOI: 10.1007/s00442-021-04855-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 01/08/2021] [Indexed: 12/01/2022]
Abstract
We used both satellite tracking and carbon, nitrogen and sulphur stable isotopic analysis (SIA) to infer wintering ecology and habitat use of the Corsican osprey Pandion haliaetus population. A control sample of feathers from 75 individuals was collected within the osprey’s northern hemisphere breeding range, to assess the SIA variability across habitat types. An experimental set of SIA on feathers of 18 Corsican adults was examined to infer wintering ground locations and habitat types used during the non-breeding period. We calibrated the SIA using GPS/GSM tracks of 12 Mediterranean adults’ movements as wintering site references. We found 50% of individuals were resident and the other half migrated. Ospreys spent the winter at temperate latitudes and showed a high plasticity in habitat selection spread over the Mediterranean basin (marine bays, coastal lagoons/marshland, inland freshwater sites). Complementary to GPS tracking, SIA is, at a broad geographical scale, a reliable method to determine whether ospreys overwinter in a habitat different from that of their breeding area. This study proved that the integration of SIA and GPS/GSM tracking techniques was effective at overcoming the intrinsic limits of each method and achieving greater information for basic ecological studies of migratory birds in aquatic environments.
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Affiliation(s)
- Flavio Monti
- Department of Physical Sciences, Earth and Environment, University of Siena, Via Mattioli 4, 53100, Siena, Italy.
| | - Aloїs Robert
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, 1919 Route de Mende, 34293, Montpellier, France
| | - Jean-Marie Dominici
- Réserve Naturelle Scandola, Parc Naturel Régional de Corse, 20245, Galeria, France
| | - Andrea Sforzi
- Maremma Natural History Museum, Strada Corsini 5, 58100, Grosseto, Italy
| | - Rafel Triay Bagur
- IME (Institut Menorquí d'Estudis), Camí des Castell 28, 07702, Maó, Spain
| | - Antoni Muñoz Navarro
- Grup Balear d'Ornitologia I Defensa de La Naturalesa (GOB), Manuel Sanchis Guarner 10, 07004, Palma de Mallorca, Spain
| | - Gaël Guillou
- Littoral, ENvironnement et SociétéS (LIENSS, UMR 7266), Université de La Rochelle, Bâtiment Marie Curie Avenue Michel Crépeau, 17042, La Rochelle Cedex 1, France
| | - Olivier Duriez
- CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, 1919 Route de Mende, 34293, Montpellier, France
| | - Ilham Bentaleb
- Université Montpellier - UMR 5554, ISEM C/C 065 Place Eugène Bataillon, 34095, Montpellier cedex 05, France
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