Now showing items 1-10 of 22
The role of lesser snow geese in positive, degenerative feedback processes resulting in the destruction of salt-marsh swards.
A positive feedback cycle between soil salinity and graminoid growth, triggered by intensive grazing and grubbing by geese, is proposed to account for the loss of graminoid vegetation in an arctic salt marsh (La Pérouse ...
Revegetation trials in degraded coastal marshes of the Hudson Bay Lowlands.
(Ottawa : National Library of Canada = Bibliothèque nationale du Canada, 1998)
Intense foraging by an increasing population of lesser snow geese, Anser caerulescens L., has led to the conversion of former salt-marsh swards, dominated by Puccinellia phryganodes and Carex subspothacea to hypersaline ...
Is there a positive relationship between body size and fecundity in lesser snow geese?
(University of California Press, 1992)
Molt and the basic plumage of male Harlequin Ducks.
(University of California Press, 1997-02)
Using observations on 28 individually marked male Harlequin Ducks from mid-June until late November, we describe plumage changes which occur as individuals proceed from the alternate plumage through basic to the return of ...
Site fidelity of Black Brant wintering and spring staging in the Strait of Georgia, British Columbia.
(University of California Press, 1998-08)
Site fidelity has important implications for population genetics and dynamics. In birds, most studies have dealt with breeding ground fidelity, ignoring the fact that waterfowl mainly pair in winter or early spring. We ...
Age-specific costs of first-time breeding
(University of California Press, 1995)
We investigated the cost of first-time breeding in a population of Lesser Snow Geese (Anser caerulescens caerulescens) nesting at La Perouse Bay, Manitoba, Canada. We estimated local survival and capture probabilities of ...
Seasonal movements of Marbled Murrelets: evidence from banded birds.
(University of California Press, 1999-08)
Recent techniques for capturing Marbled Murrelets (Brachyramphus marmoratus) have created opportunities for studying them through systematic banding programs. One murrelet banded in breeding plumage during the summer of ...