KNAW Repository

Effects of snow cover on the timing and success of reproduction in high-Arctic pink-footed geese Anser brachyrhynchus

Madsen, J. and Tamstorf, M. and Klaassen, M.R.J. and Eide, N. and Glahder, C. and Rigét, F. and Nygaard, H. and Cottaar, F. (2007) Effects of snow cover on the timing and success of reproduction in high-Arctic pink-footed geese Anser brachyrhynchus. Polar Biology, 30, 1363-1370. ISSN 0722-4060.

[img]PDF - Published Version
Restricted to KNAW only

383Kb

Official URL: http://dx.doi.org/10.1007/s00300-007-0296-9

Abstract

During four breeding seasons, 2003–2006, we studied the relationship between snow cover and nesting performance in pink-footed geese (Anser brachyrhynchus) in a key breeding site on Svalbard. Snow cover in late May, i.e., at the time of egg laying of geese, was derived from MODIS satellite images. Snow cover had a profound cascading effect on reproductive output via the number of nesting pairs and timing of nesting, which affected nest success, while there was only a tendency for a negative effect on clutch size. Hence, we estimated a five-fold difference in the number of young produced (to post-hatching) between years with little snow and years with high snow cover. The results from the study area correlated with whole-population productivity estimates recorded in autumn. Thus, snow cover derived from MODIS satellite images appears to provide a useful indicator of the breeding conditions in the Arctic.

Item Type:Article
Institutes:Nederlands Instituut voor Ecologie (NIOO)
ID Code:4573
Deposited On:16 Sep 2009 02:00
Last Modified:24 Apr 2012 16:48

Repository Staff Only: item control page