Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Impact of Climate and Predation on Autumn Migration of the Curlew Sandpiper

In English

Författare

Summary, in English

Using constant-effort catch data, causes of annual variation in the timing of migration of Curlew Sandpipers (Calidris ferruginea) migrating through Ottenby, Sweden, as well as the trend in timing of migration from 1946-2005, was investigated. Variation in the timing of autumn migration of adult and juvenile Curlew Sandpipers was influenced by breeding success connected to predation pressure on the Arctic breeding grounds. Median migration date of adult birds was significantly later in good breeding years compared with poor breeding years while the migration of juveniles was earlier in good breeding years compared with poor breeding years. Also, adults migrated earlier when the average temperature in June was warmer. Median migration dates of adults have advanced by 23 days from 1946-2005, but the migration dates of juveniles have remained unchanged. Unchanged migration dates of juveniles indicate that earlier departure of the adult Curlew Sandpipers from the breeding grounds was not due to earlier breeding. Evidence suggests that declining breeding productivity as a result of increasing predation on broods of shorebirds might, over the years, be the reason for the observed pattern of early departure of adults from the breeding grounds. One possible consequence of earlier migration is a mismatch between timing of migration and periods of food abundance on migration routes and at the wintering grounds, leading to a decline in adult and juvenile survival and population size. Received 24 February 2010, accepted 30 September 2010.

Publiceringsår

2011

Språk

Engelska

Sidor

41283-41283

Publikation/Tidskrift/Serie

Waterbirds

Volym

34

Issue

1

Dokumenttyp

Artikel i tidskrift

Förlag

Waterbird Society

Ämne

  • Biological Sciences

Nyckelord

  • Arctic
  • breeding success
  • Calidris ferruginea
  • Curlew Sandpiper
  • June
  • temperature
  • Ottenby
  • migration
  • phenology
  • predation

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1524-4695