Across a migratory divide : divergent migration directions and non-breeding grounds of Eurasian reed warblers revealed by geolocators and stable isotopes

Lade...
Vorschaubild
Dateien
Zu diesem Dokument gibt es keine Dateien.
Datum
2018
Autor:innen
Procházka, Petr
Brlík, Vojtěch
Meister, Bert
Auerswald, Jürgen
Ilieva, Mihaela
Hahn, Steffen
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
URI (zitierfähiger Link)
DOI (zitierfähiger Link)
ArXiv-ID
Internationale Patentnummer
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Sammlungen
Core Facility der Universität Konstanz
Gesperrt bis
Titel in einer weiteren Sprache
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published
Erschienen in
Journal of Avian Biology. 2018, 49(6), jav-012516. ISSN 0908-8857. eISSN 1600-048X. Available under: doi: 10.1111/jav.01769
Zusammenfassung

Migratory divides represent narrow zones of overlap between parapatric populations with distinct migration directions and, consequently, expected divergent non‐breeding distributions. The composition of the mixed population at a migratory divide and the corresponding non‐breeding ranges remain, however, unknown for many Palaearctic‐African migrants. Here, we used light‐level geolocation to track migration direction and non‐breeding grounds of Eurasian reed warblers Acrocephalus scirpaceus from three breeding populations across the species’ migratory divide. Moreover, by using feathers grown at non‐breeding grounds, we quantified stable isotope composition for individuals with known southwestern (SW) and southeastern (SE) migration directions. On a larger sample per population, we then assessed the proportions of SW‐ and SE‐migrating phenotypes in each of the three populations. All tracked reed warblers from Germany and two thirds of the birds tagged from the Czech population headed initially SW. Nevertheless, about one third of the birds from the Czech site migrated towards SE. No tracking data have been obtained for the Bulgarian population. The initial migration direction determined by geolocators was a strong predictor of the non‐breeding region, with SW migrants staying in west Africa and SE migrants in central Africa. Feather δ34S and δ15N values confirmed the predominance of SW migrants in the German population, the co‐occurrence of SW and SE migrants in the Czech population, and indicated a high (72%) proportion of SE migrants in the Bulgarian population. Thus, the combined approach of geolocator tracking and stable isotopic assignments provided clear evidence for the existence of a migratory divide in the southeast of central Europe and predicted non‐breeding range in central and central‐eastern Africa for the eastern population.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
570 Biowissenschaften, Biologie
Schlagwörter
Acrocephalus scirpaceus, non-breeding distribution, flyway use, light-level geolocation, Palearctic–African migration, δ13C, δ15N, δ34S
Konferenz
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690PROCHÁZKA, Petr, Vojtěch BRLÍK, Elizabeth YOHANNES, Bert MEISTER, Jürgen AUERSWALD, Mihaela ILIEVA, Steffen HAHN, 2018. Across a migratory divide : divergent migration directions and non-breeding grounds of Eurasian reed warblers revealed by geolocators and stable isotopes. In: Journal of Avian Biology. 2018, 49(6), jav-012516. ISSN 0908-8857. eISSN 1600-048X. Available under: doi: 10.1111/jav.01769
BibTex
@article{Prochazka2018-07-04Acros-42922,
  year={2018},
  doi={10.1111/jav.01769},
  title={Across a migratory divide : divergent migration directions and non-breeding grounds of Eurasian reed warblers revealed by geolocators and stable isotopes},
  number={6},
  volume={49},
  issn={0908-8857},
  journal={Journal of Avian Biology},
  author={Procházka, Petr and Brlík, Vojtěch and Yohannes, Elizabeth and Meister, Bert and Auerswald, Jürgen and Ilieva, Mihaela and Hahn, Steffen},
  note={Article Number: jav-012516}
}
RDF
<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/42922">
    <dcterms:abstract xml:lang="eng">Migratory divides represent narrow zones of overlap between parapatric populations with distinct migration directions and, consequently, expected divergent non‐breeding distributions. The composition of the mixed population at a migratory divide and the corresponding non‐breeding ranges remain, however, unknown for many Palaearctic‐African migrants. Here, we used light‐level geolocation to track migration direction and non‐breeding grounds of Eurasian reed warblers Acrocephalus scirpaceus from three breeding populations across the species’ migratory divide. Moreover, by using feathers grown at non‐breeding grounds, we quantified stable isotope composition for individuals with known southwestern (SW) and southeastern (SE) migration directions. On a larger sample per population, we then assessed the proportions of SW‐ and SE‐migrating phenotypes in each of the three populations. All tracked reed warblers from Germany and two thirds of the birds tagged from the Czech population headed initially SW. Nevertheless, about one third of the birds from the Czech site migrated towards SE. No tracking data have been obtained for the Bulgarian population. The initial migration direction determined by geolocators was a strong predictor of the non‐breeding region, with SW migrants staying in west Africa and SE migrants in central Africa. Feather δ34S and δ15N values confirmed the predominance of SW migrants in the German population, the co‐occurrence of SW and SE migrants in the Czech population, and indicated a high (72%) proportion of SE migrants in the Bulgarian population. Thus, the combined approach of geolocator tracking and stable isotopic assignments provided clear evidence for the existence of a migratory divide in the southeast of central Europe and predicted non‐breeding range in central and central‐eastern Africa for the eastern population.</dcterms:abstract>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2018-07-26T10:21:09Z</dcterms:available>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <dc:creator>Ilieva, Mihaela</dc:creator>
    <dc:creator>Brlík, Vojtěch</dc:creator>
    <dc:creator>Hahn, Steffen</dc:creator>
    <dc:creator>Auerswald, Jürgen</dc:creator>
    <dc:creator>Meister, Bert</dc:creator>
    <dc:contributor>Procházka, Petr</dc:contributor>
    <dc:contributor>Meister, Bert</dc:contributor>
    <dc:contributor>Ilieva, Mihaela</dc:contributor>
    <dc:creator>Procházka, Petr</dc:creator>
    <dc:creator>Yohannes, Elizabeth</dc:creator>
    <dc:contributor>Auerswald, Jürgen</dc:contributor>
    <dc:contributor>Brlík, Vojtěch</dc:contributor>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2018-07-26T10:21:09Z</dc:date>
    <dcterms:issued>2018-07-04</dcterms:issued>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/42922"/>
    <dc:contributor>Yohannes, Elizabeth</dc:contributor>
    <dc:language>eng</dc:language>
    <dcterms:title>Across a migratory divide : divergent migration directions and non-breeding grounds of Eurasian reed warblers revealed by geolocators and stable isotopes</dcterms:title>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:contributor>Hahn, Steffen</dc:contributor>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
  </rdf:Description>
</rdf:RDF>
Interner Vermerk
xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter
Kontakt
URL der Originalveröffentl.
Prüfdatum der URL
Prüfungsdatum der Dissertation
Finanzierungsart
Kommentar zur Publikation
Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Ja
Begutachtet
Ja
Diese Publikation teilen