The effect of feeding time on dispersal of Virola seeds by toucans determined from GPS tracking and accelerometers

Lade...
Vorschaubild
Dateien
Zu diesem Dokument gibt es keine Dateien.
Datum
2011
Autor:innen
Kays, Roland
Jansen, Patrick A.
Knecht, Elise M. H.
Vohwinkel, Reinhard
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
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
Acta Oecologica. 2011, 37(6), pp. 625-631. ISSN 1146-609X. Available under: doi: 10.1016/j.actao.2011.06.007
Zusammenfassung

Seed dispersal is critical to understanding forest dynamics but is hard to study because tracking seeds is difficult. Even for the best-studied dispersal system of the Neotropics, Virola nobilis, the dispersal kernel remains unknown. We combined high-resolution GPS/3D-acceleration bird tracking, seed-retention experiments, and field observations to quantify dispersal of V. nobilis by their principal dispersers, Ramphastos toucans. We inferred feeding events from movement data, and then estimated spatio-temporally explicit seed-dispersal kernels. Wild toucans moved an average of 1.8 km d−1 with two distinct activity peaks. Seed retention time in captive toucans averaged 25.5 min (range 4–98 min). Estimated seed dispersal distance averaged 144 ± 147 m, with a 56% likelihood of dispersal >100 m, two times further than the behaviour-naive estimate from the same data. Dispersal was furthest for seeds ingested in the morning, and increased with seed retention time, but only up to 60 min after feeding. Our study supports the long-standing hypothesis that toucans are excellent dispersers of Virola seeds. To maximize seed dispersal distances trees should ripen fruit in the morning when birds move the most, and produce fruits with gut-processing times around 60 min. Our study demonstrates how new tracking technology can yield nuanced seed dispersal kernels for animals that cannot be directly observed.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
570 Biowissenschaften, Biologie
Schlagwörter
seed dispersal kernel, regurgitation time, GPS tracking, accelerometer, tropical forests
Konferenz
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690KAYS, Roland, Patrick A. JANSEN, Elise M. H. KNECHT, Reinhard VOHWINKEL, Martin WIKELSKI, 2011. The effect of feeding time on dispersal of Virola seeds by toucans determined from GPS tracking and accelerometers. In: Acta Oecologica. 2011, 37(6), pp. 625-631. ISSN 1146-609X. Available under: doi: 10.1016/j.actao.2011.06.007
BibTex
@article{Kays2011effec-19914,
  year={2011},
  doi={10.1016/j.actao.2011.06.007},
  title={The effect of feeding time on dispersal of Virola seeds by toucans determined from GPS tracking and accelerometers},
  number={6},
  volume={37},
  issn={1146-609X},
  journal={Acta Oecologica},
  pages={625--631},
  author={Kays, Roland and Jansen, Patrick A. and Knecht, Elise M. H. and Vohwinkel, Reinhard and Wikelski, Martin}
}
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/123456789/19914">
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <dc:creator>Jansen, Patrick A.</dc:creator>
    <dc:contributor>Vohwinkel, Reinhard</dc:contributor>
    <dc:contributor>Knecht, Elise M. H.</dc:contributor>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:creator>Vohwinkel, Reinhard</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2012-08-09T12:56:22Z</dc:date>
    <dc:contributor>Jansen, Patrick A.</dc:contributor>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:creator>Knecht, Elise M. H.</dc:creator>
    <dcterms:issued>2011</dcterms:issued>
    <dc:contributor>Wikelski, Martin</dc:contributor>
    <dc:creator>Kays, Roland</dc:creator>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/19914"/>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2012-08-09T12:56:22Z</dcterms:available>
    <dc:creator>Wikelski, Martin</dc:creator>
    <dcterms:bibliographicCitation>Publ. in: Acta oecologica ; 37 (2011), 6. - S. 625-631</dcterms:bibliographicCitation>
    <dc:language>eng</dc:language>
    <dcterms:title>The effect of feeding time on dispersal of Virola seeds by toucans determined from GPS tracking and accelerometers</dcterms:title>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <dcterms:abstract xml:lang="eng">Seed dispersal is critical to understanding forest dynamics but is hard to study because tracking seeds is difficult. Even for the best-studied dispersal system of the Neotropics, Virola nobilis, the dispersal kernel remains unknown. We combined high-resolution GPS/3D-acceleration bird tracking, seed-retention experiments, and field observations to quantify dispersal of V. nobilis by their principal dispersers, Ramphastos toucans. We inferred feeding events from movement data, and then estimated spatio-temporally explicit seed-dispersal kernels. Wild toucans moved an average of 1.8 km d&lt;sup&gt;−1&lt;/sup&gt; with two distinct activity peaks. Seed retention time in captive toucans averaged 25.5 min (range 4–98 min). Estimated seed dispersal distance averaged 144 ± 147 m, with a 56% likelihood of dispersal &gt;100 m, two times further than the behaviour-naive estimate from the same data. Dispersal was furthest for seeds ingested in the morning, and increased with seed retention time, but only up to 60 min after feeding. Our study supports the long-standing hypothesis that toucans are excellent dispersers of Virola seeds. To maximize seed dispersal distances trees should ripen fruit in the morning when birds move the most, and produce fruits with gut-processing times around 60 min. Our study demonstrates how new tracking technology can yield nuanced seed dispersal kernels for animals that cannot be directly observed.</dcterms:abstract>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dc:contributor>Kays, Roland</dc:contributor>
    <dc:rights>terms-of-use</dc:rights>
  </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
Diese Publikation teilen