Connectivity in Reed Warblers Acrocephalus scirpaceus between breeding grounds in Europe and autumn stopover sites in Iberia

Research output: Contribution to journalArticle

Abstract

We determined the degree of connectivity in the Eurasian Reed Warbler
Acrocephalus scirpaceus between breeding regions in central and northern
Europe and stopover sites in Iberia, during the autumn migration. We used both
recovery data and wing length analyses to achieve this. Biometric data were
obtained during 2009 at 11 sampling localities in Iberia, which we amalgamated
into four major migratory areas within the region (Central, Western, Eastern
and Southwestern Iberia, hereafter CI, WI, EI, SW). From the EURING database,
we selected birds captured at their breeding sites in Europe and recaptured
in Iberia during the autumn migration. Reed Warblers passing through WI
had shorter wings than those in CI, EI and SW, suggesting that birds in WI
migrated shorter distances, a fact also supported by recovery data. Although
Reed Warblers showed some population overlap when passing through Iberia,
we found that birds passing through EI and CI came from areas further to the
east (continental Europe) than those passing through WI (mainly British Isles),
thus supporting parallel migration. Reed Warblers tended to converge in southwestern
Iberia, suggesting an effect of nearby geographical barriers.

Details

Authors
  • Miren Andueza
  • Emilio Barba
  • Jose Luis Arroyo
  • Jordi Feliu
  • Jose L. Greño
  • Fernando Jubete
  • Luis Lozano
  • Juan S. Monrós
  • Rubén Moreno-Opo
  • Julio Neto
  • Alejandro Onrubia
  • Paulo Tenreiro
  • Thijs Valkenburg
  • Carlos Zumalacárregui
  • Carlos González
  • Antonio Herrero
  • Juan Arizaga
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Biological Sciences

Keywords

  • Iberia, migration routes, parallel migration, recoveries, wing length
Original languageEnglish
Pages (from-to)133-140
JournalArdea
Volume101
Issue number2
Publication statusPublished - 2013
Publication categoryResearch
Peer-reviewedYes