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title Use of stable isotope fingerprints to assign wintering origin and trace shorebird movements along the East Atlantic Flyway
authors Catry, T; Lourenco, PM; Lopes, RJ; Bocher, P; Carneiro, C; Alves, JA; Delaporte, P; Bearhop, S; Piersma, T; Granadeiro, JP
author full name Catry, Teresa; Lourenco, Pedro M.; Lopes, Ricardo J.; Bocher, Pierrick; Carneiro, Camilo; Alves, Jose A.; Delaporte, Philippe; Bearhop, Stuart; Piersma, Theunis; Granadeiro, Jose P.
title Use of stable isotope fingerprints to assign wintering origin and trace shorebird movements along the East Atlantic Flyway
nationality internacional
language English
document type Article
author keywords Migratory connectivity; Stable isotopes; Stopover sites; Discriminant analysis; Toenails
abstract Migratory connectivity can be defined as the flux of individuals or populations among areas between stages of an animal's life cycle. Many shorebird species perform long-distance migrations and while moving between breeding and wintering grounds, they depend on a network of intermediate wetlands (stopover sites) where populations of different origins extensively overlap. The difficulty to discriminate such populations represents a serious obstacle to the identification of the links between breeding or wintering areas and stopover sites, and also precludes the estimation of demographic parameters for each population. In this study, we test if linear discriminant models based on stable carbon and nitrogen isotope ratios in toenails can he used to identify populations of several shorebird species of different wintering origins overlapping at two stopover sites of the East Atlantic Flyway. In addition, we evaluate the ability of this approach to infer migratory phenological patterns of shorebirds. Linear discriminant analyses performed overall well in distinguishing the isotopic signals of birds from wintering areas (in France, Portugal, Morocco, Mauritania and Guinea-Bissau) most species, correctly classifying over 80% (n = 542) of all wintering individuals sampled at these areas. Assignment rates of shorebirds captured during spring migration were also high (96%, n=323) at the Tejo estuary, Portugal, but lower (40%, 0 = 185) at Marennes-Oleron Bay in France, and also differed among species. A large proportion of spring migrants captured in Portugal and France were assigned to Banc d' Arguin in Mauritania, the most important wintering area in the flyway. Phenological patterns derived for dunlins (Calidris alpina), common ringed plovers (Charadrius hiaticula) and grey plovers (Pluvinlis squatarola) suggest that the first northward migrants started arriving at the Tejo estuary during the second half of March, with peaking numbers occurring during April or May.
author address [Catry, Teresa; Lourenco, Pedro M.; Granadeiro, Jose P.] Univ Lisbon, Fac Ciencias, Dept Biol Anim, Ctr Estudos Ambiente & Mar, P-1749016 Lisbon, Portugal; [Lopes, Ricardo J.] Univ Porto, InBIO Lab Associado, Ctr Invest Biodiversidade & Recursos Genet, CIBIO, P-4485661 Vairao, Portugal; [Bocher, Pierrick] CNRS Univ La Rochelle, UMR LIENSs 7266, Lab Littoral Environm & Soc, 2 Rue Olympe de Gouges, F-17000 La Rochelle, France; [Carneiro, Camilo] Univ Lisbon, Museu Nacl Hist Nat & Ciencia, Rua Escola Politecn 58, P-1250102 Lisbon, Portugal; [Carneiro, Camilo; Alves, Jose A.] Univ Aveiro, Ctr Estudos Ambiente & Mar, Campus Univ Santiago, P-3180193 Aveiro, Portugal; [Carneiro, Camilo; Alves, Jose A.] Univ Iceland, South Iceland Res Ctr, Tryggvagata 36, IS-800 Selfoss, Iceland; [Delaporte, Philippe] Reserve Nat Natl Moeze Oleron, Ligue Protect Oiseaux, F-17180 Plaisance, St Froult, France; [Bearhop, Stuart] Univ Exeter, Ctr Ecol & Conservat, Penryn Campus, Penryn TR10 9EZ, Cornwall, England; [Piersma, Theunis] NIOZ Royal Netherlands Inst Sea Res, POB 59, NL-1790 AB Den Burg, Texel, Netherlands; [Piersma, Theunis] Univ Groningen, Ctr Ecol & Evolutionary Studies, Anim Ecol Grp, Global Flyway Ecol, POB 11103, NL-9700 CC Groningen, Netherlands
reprint address Catry, T (reprint author), Univ Lisbon, Fac Ciencias, Dept Biol Anim, Ctr Estudos Ambiente & Mar, P-1749016 Lisbon, Portugal.
e-mail address teresa.catry@gmail.com
funding agency and grant number Fundacao para a Ciencia e Tecnologia (FCT) [PTDC/MAR/119920/2010]; POPH/QREN/FSE funds; FCT [SFRH/BPD/102255/2014, SFRH/BPD/84237/2012, SFRH/BPD/40786/2007, SFRH/BPD/84141/2012, SFRH/BPD/91527/2012]; Royal NIOZ; NWO-ALW TOP grant 'Shorebirds in space' [854.11.004]; [UID/AMB/50017/2013]
funding text We thank Alfredo da Silva, Aissa Regalia and other staff from IBAP for permission to carry out field work in GuineaBissau, as well as Jodozinho Si) and Hamilton Monteiro from GPC. Paulo Catry provided help during expedition preparation and Maria Dias, Miguel Lecoq and Mohamed Henriques helped during fieldwork. Expeditions to Banc d'Arguin received the logistic support of PNBA, AntOnio Araujo (MAVA) and colleagues from NIOZ, particularly Dr Piet van den Hout and Dr Jan van Gil s. We also acknowledge the participation of Hamid Rguibi-ldrissi, Latifa Joulatni, Joana. Costa, Sara Pardal, Miguel Aranjo and Luis da Silva in expeditions to Sidi Moussa, Finally, we thank all volunteers helping in bird sampling at the Tejo estuary, in particular Jodo Guilhertne, Ines Catty, Pete Potts, Ruth Croger and other members of the Farlington Ringing Group, and the staff of the Nature Reserves Moeze-Oleron as well as Pierre Rousseaux, Loic Jomat, Vincent Lelong, Stephane Gueneteau and Frederic Robin. The manuscript beneficiated from the comments of Phil Atkinson and another two anonymous referees, All sampling was performed under ringing and sampling permits 82/2012/COLH, 394/2014/CAPT, 213/2012, 226/2013 and 227/2014 (ICNF) and 22/2013 and 3/2014 (HCEFLCD). This study was supported by Fundacao para a Ciencia e Tecnologia (FCT), through Project
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cited reference count 46
publisher city JENA
publisher address OFFICE JENA, P O BOX 100537, 07705 JENA, GERMANY
issn 1439-1791
29-character source abbreviation BASIC APPL ECOL
iso source abbreviation Basic Appl. Ecol.
publication date MAR
year published 2016
volume 17
issue 2
beginning page 177
ending page 187
digital object identifier (doi) 10.1016/j.baae.2015.010.005
page count 11
web of science category Ecology
subject category Environmental Sciences & Ecology
document delivery number DF4JL
unique article identifier WOS:000371313700009
link http://dx.doi.org/10.1016/j.baae.2015.10.005