hkr.sePublikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
A flyway perspective of foraging activity in Eurasian Green-winged Teal, Anas crecca crecca
Högskolan Kristianstad, Institutionen för matematik och naturvetenskap.
Högskolan Kristianstad, Institutionen för matematik och naturvetenskap. (Akvatisk biologi och kemi)
Office National de la Chasse et de la Faune Sauvage, CNERA Avifaune Migratrice, La Tour du Valat, Le Sambuc, Arles.
2007 (Engelska)Ingår i: Canadian Journal of Zoology, ISSN 0008-4301, E-ISSN 1480-3283, Vol. 85, nr 1, s. 81-91Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Time-activity budgets in the family Anatidae are available for the wintering and breeding periods. We present the first flyway-level study of foraging time in a long-distance migrant, the Eurasian Green-winged Teal, Anas crecca crecca L., 1758 ("Teal"). Behavioral data from early and late spring staging, breeding, and molting sites were collected with standardized protocols to explore differences between the,sexes, seasons, and diel patterns. Teal foraging activity was compared with that of the Mallard, Anas platyrhynchos L., 1758 and Northern Shoveler, Anas clypeata L., 1758, and the potential effects of duck density and predator-caused disturbance were explored. In early spring, foraging time was moderate (50.5%) and mostly nocturnal (45%). It increased dramatically in all three species at migration stopovers and during molt, mostly because of increased diurnal foraging, while nocturnal foraging remained fairly constant along the flyway. These patterns adhere to the "income breeding" strategy expected for this species. No differences between the sexes were recorded in either species studied. Teal foraging time was positively correlated with density of Teal and all ducks present, but negatively correlated with predator disturbance. Our study suggests that Teal, in addition to being income breeders, may also be considered as income migrants; they find the energy necessary to migrate at staging sites along the flyway.

Ort, förlag, år, upplaga, sidor
2007. Vol. 85, nr 1, s. 81-91
Nationell ämneskategori
Biologiska vetenskaper
Identifikatorer
URN: urn:nbn:se:hkr:diva-641DOI: 10.1139/Z06-201ISI: 000245177400010OAI: oai:DiVA.org:hkr-641DiVA, id: diva2:208454
Tillgänglig från: 2009-03-18 Skapad: 2009-03-18 Senast uppdaterad: 2017-12-13Bibliografiskt granskad

Open Access i DiVA

fulltext(305 kB)482 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 305 kBChecksumma SHA-512
e9229c80e7753681de5678f8c536cf70a5303858db7d1cf92cae779c78710e401eeb10379bcdca17b86a6972f16adfac4a94dfbb250973c82286cd6ce8a58a0d
Typ fulltextMimetyp application/pdf

Övriga länkar

Förlagets fulltextFulltext

Personposter BETA

Elmberg, Johan

Sök vidare i DiVA

Av författaren/redaktören
Elmberg, Johan
Av organisationen
Institutionen för matematik och naturvetenskap
I samma tidskrift
Canadian Journal of Zoology
Biologiska vetenskaper

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 482 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 252 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf