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

Barshep, Yahkat; Hedenström, Anders LU and Underhill, Leslie Gordon (2011) In Waterbirds 34(1). p.41283-41283
Abstract
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... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Arctic, breeding success, Calidris ferruginea, Curlew Sandpiper, June, temperature, Ottenby, migration, phenology, predation
in
Waterbirds
volume
34
issue
1
pages
41283 - 41283
publisher
Waterbird Society
external identifiers
  • wos:000288524800001
  • scopus:79953656769
ISSN
1524-4695
language
English
LU publication?
yes
id
b63fc87b-9f36-4f62-919b-8ad4573e009b (old id 1925607)
date added to LUP
2011-05-11 09:56:51
date last changed
2017-02-12 03:55:24
@article{b63fc87b-9f36-4f62-919b-8ad4573e009b,
  abstract     = {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.},
  author       = {Barshep, Yahkat and Hedenström, Anders and Underhill, Leslie Gordon},
  issn         = {1524-4695},
  keyword      = {Arctic,breeding success,Calidris ferruginea,Curlew Sandpiper,June,temperature,Ottenby,migration,phenology,predation},
  language     = {eng},
  number       = {1},
  pages        = {41283--41283},
  publisher    = {Waterbird Society},
  series       = {Waterbirds},
  title        = {Impact of Climate and Predation on Autumn Migration of the Curlew Sandpiper},
  volume       = {34},
  year         = {2011},
}