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Habitat Use by Greater Snow Geese during the Brood-Rearing Period

Jean-François Giroux, Yves Bédard and Jean Bédard
Arctic
Vol. 37, No. 2 (Jun., 1984), pp. 155-160
Stable URL: http://www.jstor.org/stable/40510269
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Habitat Use by Greater Snow Geese during the Brood-Rearing Period
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Abstract

Observations of habitat use by the Greater Snow Goose (Anser caerulescens atlanticus) were conducted at Jungersen Bay, northern Baffin Island, from 27 July -17 August 1981. Density of geese using the study area was estimated at 425 birds.km⁻² . The average of 2.8 young per family did not change during our study. Non-breeding geese were first observed in flight on 1 August and were seen regularly until 13 August. Three types of habitat used by geese during the brood-rearing period were distinguished: tidal marshes dominated by Carex subspathacea and Puccinellia phryganodes; wet moss-covered meadows with up to 5 cm of standing water, dominated by Carex stans, Dupontia fisheri, Calamagrostís neglecta, and Arctagrostis latifolia; and, around ponds, bands of vegetation 1-2 m wide dominated by Carex stans. The three most important species of monocots grazed by geese were Puccinellia phryganodes, Carex subspathacea, and C. stans. It is unlikely that habitat and food resources are limiting factors for Greater Snow Geese in the High Arctic during the brood-rearing period. We suggest that potential breeding areas for this species be identified and given special protection. /// Du 27 juillet au 17 août 1981, nous avons effectué des travaux sur l'utilisation de l'habitat par la Grande Oie Blanche (Anser caerulescens atlanticus) à Jungersen Bay au nord de la terre de Baffin. Nous estimons à 425 oiseaux · km⁻² la population d'oies qui a fréquenté notre aire d'étude. La moyenne de 2.8 jeunes par famille ne changea pas durant notre séjour. Les oies non-nicheuses ont été observées en vol du 1er au 13 août. Les oies utilisèrent trois types d'habitat durant la période d'élevage des jeunes: des marécages intertidaux où Carex subspathacea et Puccinellia phryganodes étaient les principales espèces végétales; des zones très humides ayant jusqu'à 5 cm d'eau à la surface, recouvertes de bryophytes et dominées par Carex stans, Dupontia fisheri, Calamagrostis neglecta, et Arctagrostis latifolia; et, autour des étangs, des ceintures de végétation (1-2 m de largeur) caractérisées par Carex stans. Les trois espèces de monocotyles les plus importantes pour l'alimentation des oies étaient Puccinellia phryganodes, Carex subspathacea, et C. stans. Il est peu probable que l'habitat et la nourriture soient des facteurs limitants pour la Grande Oie Blanche dans l'Arctique. Nous suggérons d'identifier les sites propices à cette espèce afin de leur accorder une protection particulière.

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