NDLI: Differences in food abundance cause inter-annual variation in the breeding phenology of High Arctic waders

Content Provider	Springer Nature Link
Author	Meltofte, Hans Høye, Toke T. Schmidt, Niels M. Forchhammer, Mads C.
Copyright Year	2006
Abstract	Previous work has shown that High Arctic waders in Greenland are “income breeders”, i.e. the resources used for egg formation are based almost entirely on biomass obtained on the breeding grounds. Thus, their breeding phenology is expected to be highly sensitive to inter-annual variation in food abundance during the pre-laying period. Early spring snow-cover may also influence timing of egg-laying either directly or mediated through food resources. Here, we report on the inter-annual variation in clutch initiation of three wader species breeding in High Arctic Greenland, Sanderling (Calidris alba), Dunlin (Calidris alpina) and Ruddy Turnstone (Arenaria interpres), in relation to spring snow-cover and spring arthropod abundance over ten breeding seasons at Zackenberg Research Station 1995–2005. Food abundance had the strongest effect on timing of clutch initiation, while the proportion of snow-free land had a weaker but still significant effect, i.e. more food and more snow-free land both result in earlier egg-laying. We hypothesize that food is most important when there is sufficient snow-free land to nest on, while snow-cover is of increasing importance in years with late snowmelt.
Starting Page	601
Ending Page	606
Page Count	6
File Format	PDF
ISSN	07224060
Journal	Polar Biology
Volume Number	30
Issue Number	5
e-ISSN	14322056
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-11-08
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Zoology Plant Sciences Microbiology Oceanography Ecology
Content Type	Text
Resource Type	Article
Subject	Agricultural and Biological Sciences

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