The Numbers and Distribution of Greater Snow Geese on Bylot Island and near Jungersen Bay, Baffin Island, in 1988 And 1983

We conducted aerial photographic surveys of greater snow geese on portions of Bylot Island and northern Baffin Island during August 1988 to determine whether changes had occurred since a similar survey in 1983. On the 1600 sq/km south plain of Bylot Island, using a quadrat system and stratified rand...

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Published in:ARCTIC
Main Authors: Reed, Austin, Boyd, Hugh, Chagnon, Pierre, Hawkings, James
Format: Article in Journal/Newspaper
Language:English
Published: The Arctic Institute of North America 1992
Subjects:
Online Access:https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64436
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spelling ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/64436 2023-05-15T14:19:11+02:00 The Numbers and Distribution of Greater Snow Geese on Bylot Island and near Jungersen Bay, Baffin Island, in 1988 And 1983 Reed, Austin Boyd, Hugh Chagnon, Pierre Hawkings, James 1992-01-01 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64436 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64436/48371 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64436 ARCTIC; Vol. 45 No. 2 (1992): June: 105–210; 115-119 1923-1245 0004-0843 Aerial surveys Animal distribution Animal food Animal population Animal reproduction Bird nesting Environmentally significant areas Greater Snow Geese Salt marshes Baffin Island Nunavut Bylot Island Jungersen Bay St. Lawrence Estuary Québec info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1992 ftunivcalgaryojs 2022-03-22T21:21:38Z We conducted aerial photographic surveys of greater snow geese on portions of Bylot Island and northern Baffin Island during August 1988 to determine whether changes had occurred since a similar survey in 1983. On the 1600 sq/km south plain of Bylot Island, using a quadrat system and stratified random sampling, we estimated a population of 26,300 breeding adults, 5,400 failed- and non-breeding adults, and 41,400 goslings; the breeding component had increased by 58% from the 1983 survey. In a 274 sq/km study area in Jungersen Bay on northern Baffin Island, we conducted total counts and recorded 2,555 adult breeders, 546 failed- and non-breeders, and 4,127 goslings; the breeding segment had declined by 15% since 1983. The later date of the survey in 1988, relative to that of 1983, is believed to have been the main cause of a more even distribution of broods among strata on Bylot Island and may have contributed to an underestimation of breeding geese at Jungersen Bay. Both survey areas supported high densities of breeding greater snow geese in both years. Bylot Island supported a similar proportion of the entire greater snow goose breeding population in 1988 (13%) and 1983 (15%).Key words: Anser caerulescens atlanticus, Baffin Island, breeding distribution, Bylot Island, Canada, goose surveys, greater snow goose RÉSUMÉ. En août 1988, nous avons effectué un inventaire heliporté-photographique des Grandes Oies des neiges sur une partie des îles Bylot et Baffin afin de déterminer s’il y avait eu des changements d’effectifs depuis 1983. Nous avons employé un système de quadrats et un échantillonnage aléatoire stratifié sur une surface de 1600 km2 de la plaine sud de l’île Bylot; une estimation de 26 300 adultes nicheurs, 5400 adultes non-nicheurs, et 41 400 oisons fut obtenue. Le nombre d’adultes nicheurs avait augmenté de 58% depuis 1983. Dans une aire d’étude de 274 km’ à Jungersen Bay dans la partie nord de l’île Baffin, nous avons dénombré 2555 adultes nicheurs, 546 adultes non-nicheurs, et 4127 oisons; le nombre d’adultes nicheurs avait diminué de 15% depuis 1983. La date plus tardive de l’inventaire de 1988, en comparaison avec celui de 1983, semblait être la cause d’une répartition plus égale des couvées d’oies parmi les différents strates à l’île Bylot, et a peut être conduit à une sous-estimation à Jungersen Bay. Les deux régions ont supporté des densités élevées de couvées de Grandes Oies des neiges durant les deux années. L’île Bylot a servi de lieu de nidification à une proportion similaire de la population totale de reproducteurs en 1988 (13%) et en 1983 (15%).Mots clés: aire de nidification, Anser caerulescens atlanticus, Canada, Grande Oie des neiges, île Baffiin, île Bylot, inventaire d’oies Article in Journal/Newspaper Arctic Baffin Island Baffin Bylot Island Canada Goose Île Bylot Nunavut University of Calgary Journal Hosting Baffin Island Bylot Island Canada Jungersen Bay ENVELOPE(-84.633,-84.633,71.518,71.518) Nunavut ARCTIC 45 2
institution Open Polar
collection University of Calgary Journal Hosting
op_collection_id ftunivcalgaryojs
language English
topic Aerial surveys
Animal distribution
Animal food
Animal population
Animal reproduction
Bird nesting
Environmentally significant areas
Greater Snow Geese
Salt marshes
Baffin Island
Nunavut
Bylot Island
Jungersen Bay
St. Lawrence Estuary
Québec
spellingShingle Aerial surveys
Animal distribution
Animal food
Animal population
Animal reproduction
Bird nesting
Environmentally significant areas
Greater Snow Geese
Salt marshes
Baffin Island
Nunavut
Bylot Island
Jungersen Bay
St. Lawrence Estuary
Québec
Reed, Austin
Boyd, Hugh
Chagnon, Pierre
Hawkings, James
The Numbers and Distribution of Greater Snow Geese on Bylot Island and near Jungersen Bay, Baffin Island, in 1988 And 1983
topic_facet Aerial surveys
Animal distribution
Animal food
Animal population
Animal reproduction
Bird nesting
Environmentally significant areas
Greater Snow Geese
Salt marshes
Baffin Island
Nunavut
Bylot Island
Jungersen Bay
St. Lawrence Estuary
Québec
description We conducted aerial photographic surveys of greater snow geese on portions of Bylot Island and northern Baffin Island during August 1988 to determine whether changes had occurred since a similar survey in 1983. On the 1600 sq/km south plain of Bylot Island, using a quadrat system and stratified random sampling, we estimated a population of 26,300 breeding adults, 5,400 failed- and non-breeding adults, and 41,400 goslings; the breeding component had increased by 58% from the 1983 survey. In a 274 sq/km study area in Jungersen Bay on northern Baffin Island, we conducted total counts and recorded 2,555 adult breeders, 546 failed- and non-breeders, and 4,127 goslings; the breeding segment had declined by 15% since 1983. The later date of the survey in 1988, relative to that of 1983, is believed to have been the main cause of a more even distribution of broods among strata on Bylot Island and may have contributed to an underestimation of breeding geese at Jungersen Bay. Both survey areas supported high densities of breeding greater snow geese in both years. Bylot Island supported a similar proportion of the entire greater snow goose breeding population in 1988 (13%) and 1983 (15%).Key words: Anser caerulescens atlanticus, Baffin Island, breeding distribution, Bylot Island, Canada, goose surveys, greater snow goose RÉSUMÉ. En août 1988, nous avons effectué un inventaire heliporté-photographique des Grandes Oies des neiges sur une partie des îles Bylot et Baffin afin de déterminer s’il y avait eu des changements d’effectifs depuis 1983. Nous avons employé un système de quadrats et un échantillonnage aléatoire stratifié sur une surface de 1600 km2 de la plaine sud de l’île Bylot; une estimation de 26 300 adultes nicheurs, 5400 adultes non-nicheurs, et 41 400 oisons fut obtenue. Le nombre d’adultes nicheurs avait augmenté de 58% depuis 1983. Dans une aire d’étude de 274 km’ à Jungersen Bay dans la partie nord de l’île Baffin, nous avons dénombré 2555 adultes nicheurs, 546 adultes non-nicheurs, et 4127 oisons; le nombre d’adultes nicheurs avait diminué de 15% depuis 1983. La date plus tardive de l’inventaire de 1988, en comparaison avec celui de 1983, semblait être la cause d’une répartition plus égale des couvées d’oies parmi les différents strates à l’île Bylot, et a peut être conduit à une sous-estimation à Jungersen Bay. Les deux régions ont supporté des densités élevées de couvées de Grandes Oies des neiges durant les deux années. L’île Bylot a servi de lieu de nidification à une proportion similaire de la population totale de reproducteurs en 1988 (13%) et en 1983 (15%).Mots clés: aire de nidification, Anser caerulescens atlanticus, Canada, Grande Oie des neiges, île Baffiin, île Bylot, inventaire d’oies
format Article in Journal/Newspaper
author Reed, Austin
Boyd, Hugh
Chagnon, Pierre
Hawkings, James
author_facet Reed, Austin
Boyd, Hugh
Chagnon, Pierre
Hawkings, James
author_sort Reed, Austin
title The Numbers and Distribution of Greater Snow Geese on Bylot Island and near Jungersen Bay, Baffin Island, in 1988 And 1983
title_short The Numbers and Distribution of Greater Snow Geese on Bylot Island and near Jungersen Bay, Baffin Island, in 1988 And 1983
title_full The Numbers and Distribution of Greater Snow Geese on Bylot Island and near Jungersen Bay, Baffin Island, in 1988 And 1983
title_fullStr The Numbers and Distribution of Greater Snow Geese on Bylot Island and near Jungersen Bay, Baffin Island, in 1988 And 1983
title_full_unstemmed The Numbers and Distribution of Greater Snow Geese on Bylot Island and near Jungersen Bay, Baffin Island, in 1988 And 1983
title_sort numbers and distribution of greater snow geese on bylot island and near jungersen bay, baffin island, in 1988 and 1983
publisher The Arctic Institute of North America
publishDate 1992
url https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64436
long_lat ENVELOPE(-84.633,-84.633,71.518,71.518)
geographic Baffin Island
Bylot Island
Canada
Jungersen Bay
Nunavut
geographic_facet Baffin Island
Bylot Island
Canada
Jungersen Bay
Nunavut
genre Arctic
Baffin Island
Baffin
Bylot Island
Canada Goose
Île Bylot
Nunavut
genre_facet Arctic
Baffin Island
Baffin
Bylot Island
Canada Goose
Île Bylot
Nunavut
op_source ARCTIC; Vol. 45 No. 2 (1992): June: 105–210; 115-119
1923-1245
0004-0843
op_relation https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64436/48371
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64436
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