Reduction of Garbage in the Diet of Nonbreeding Glaucous Gulls Corresponding to a Change in Waste Management

Glaucous gulls (Larus hyperboreus) are major predators in the Arctic and may benefit from human development. We studied use of garbage by glaucous gulls in Barrow, Alaska, in 2007, when municipal waste was disposed of in a landfill, and in 2008, when it was incinerated. In both years, diet samples f...

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Published in:ARCTIC
Main Authors: Weiser, Emily L., Powell, Abby N.
Format: Article in Journal/Newspaper
Language:English
Published: The Arctic Institute of North America 2011
Subjects:
Online Access:https://journalhosting.ucalgary.ca/index.php/arctic/article/view/67149
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author Weiser, Emily L.
Powell, Abby N.
author_facet Weiser, Emily L.
Powell, Abby N.
author_sort Weiser, Emily L.
collection Unknown
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container_title ARCTIC
container_volume 64
description Glaucous gulls (Larus hyperboreus) are major predators in the Arctic and may benefit from human development. We studied use of garbage by glaucous gulls in Barrow, Alaska, in 2007, when municipal waste was disposed of in a landfill, and in 2008, when it was incinerated. In both years, diet samples from breeding adult gulls contained less garbage than those from loafing nonbreeding gulls (mostly subadults of less than four years), possibly because the breeding colony was more distant than many loafing sites from the landfills. Although breeding gull samples showed no change, garbage in regurgitated pellets and food remains of nonbreeding gulls was significantly less prevalent in 2008 than in 2007 (28% vs. 43% occurrence in diet samples), and this reduction could be explained by the switch from landfill to waste incineration. Yet garbage remained a substantial part of nonbreeding gull diet after the management change. Other aspects of waste management, such as storage prior to disposal, may also be important in limiting scavengers’ access to garbage and thus reducing the indirect impact of human development on prey species of conservation concern. Dans l’Arctique, le goéland bourgmestre (Larus hyperboreus) est un important prédateur, et celui-ci pourrait bénéficier du développement humain. Nous nous sommes penchés sur l’utilisation qu’a fait le goéland bourgmestre des déchets à Barrow, en Alaska, en 2007 lorsque les déchets municipaux aboutissaient dans un site d’enfouissement puis en 2008, lorsque les déchets municipaux étaient incinérés. Au cours de ces deux années, les échantillons alimentaires prélevés chez les goélands adultes reproducteurs renfermaient moins de déchets que les échantillons prélevés auprès des goélands non-reproducteurs qui flânaient (des goélands immatures de moins de quatre ans dans la plupart des cas), probablement parce que la colonie de reproduction était plus loin des sites d’enfouissement que des nombreux lieux de flânerie. Bien que les échantillons prélevés chez les goélands ...
format Article in Journal/Newspaper
genre Arctic
Arctic
Barrow
Glaucous Gull
Goéland bourgmestre
Larus hyperboreus
Alaska
genre_facet Arctic
Arctic
Barrow
Glaucous Gull
Goéland bourgmestre
Larus hyperboreus
Alaska
geographic Arctic
geographic_facet Arctic
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op_source ARCTIC; Vol. 64 No. 2 (2011): June: 137–268; 220–226
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spelling ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/67149 2025-06-15T14:14:51+00:00 Reduction of Garbage in the Diet of Nonbreeding Glaucous Gulls Corresponding to a Change in Waste Management Weiser, Emily L. Powell, Abby N. 2011-06-02 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/67149 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/67149/51061 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/67149 ARCTIC; Vol. 64 No. 2 (2011): June: 137–268; 220–226 1923-1245 0004-0843 development diet glaucous gull human refuse human-subsidized predators Larus hyperboreus management développement régime goéland bourgmestre déchets humains prédateurs assistés par les humains gestion info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 2011 ftunivcalgaryojs 2025-05-27T03:29:43Z Glaucous gulls (Larus hyperboreus) are major predators in the Arctic and may benefit from human development. We studied use of garbage by glaucous gulls in Barrow, Alaska, in 2007, when municipal waste was disposed of in a landfill, and in 2008, when it was incinerated. In both years, diet samples from breeding adult gulls contained less garbage than those from loafing nonbreeding gulls (mostly subadults of less than four years), possibly because the breeding colony was more distant than many loafing sites from the landfills. Although breeding gull samples showed no change, garbage in regurgitated pellets and food remains of nonbreeding gulls was significantly less prevalent in 2008 than in 2007 (28% vs. 43% occurrence in diet samples), and this reduction could be explained by the switch from landfill to waste incineration. Yet garbage remained a substantial part of nonbreeding gull diet after the management change. Other aspects of waste management, such as storage prior to disposal, may also be important in limiting scavengers’ access to garbage and thus reducing the indirect impact of human development on prey species of conservation concern. Dans l’Arctique, le goéland bourgmestre (Larus hyperboreus) est un important prédateur, et celui-ci pourrait bénéficier du développement humain. Nous nous sommes penchés sur l’utilisation qu’a fait le goéland bourgmestre des déchets à Barrow, en Alaska, en 2007 lorsque les déchets municipaux aboutissaient dans un site d’enfouissement puis en 2008, lorsque les déchets municipaux étaient incinérés. Au cours de ces deux années, les échantillons alimentaires prélevés chez les goélands adultes reproducteurs renfermaient moins de déchets que les échantillons prélevés auprès des goélands non-reproducteurs qui flânaient (des goélands immatures de moins de quatre ans dans la plupart des cas), probablement parce que la colonie de reproduction était plus loin des sites d’enfouissement que des nombreux lieux de flânerie. Bien que les échantillons prélevés chez les goélands ... Article in Journal/Newspaper Arctic Arctic Barrow Glaucous Gull Goéland bourgmestre Larus hyperboreus Alaska Unknown Arctic ARCTIC 64 2
spellingShingle development
diet
glaucous gull
human refuse
human-subsidized predators
Larus hyperboreus
management
développement
régime
goéland bourgmestre
déchets humains
prédateurs assistés par les humains
gestion
Weiser, Emily L.
Powell, Abby N.
Reduction of Garbage in the Diet of Nonbreeding Glaucous Gulls Corresponding to a Change in Waste Management
title Reduction of Garbage in the Diet of Nonbreeding Glaucous Gulls Corresponding to a Change in Waste Management
title_full Reduction of Garbage in the Diet of Nonbreeding Glaucous Gulls Corresponding to a Change in Waste Management
title_fullStr Reduction of Garbage in the Diet of Nonbreeding Glaucous Gulls Corresponding to a Change in Waste Management
title_full_unstemmed Reduction of Garbage in the Diet of Nonbreeding Glaucous Gulls Corresponding to a Change in Waste Management
title_short Reduction of Garbage in the Diet of Nonbreeding Glaucous Gulls Corresponding to a Change in Waste Management
title_sort reduction of garbage in the diet of nonbreeding glaucous gulls corresponding to a change in waste management
topic development
diet
glaucous gull
human refuse
human-subsidized predators
Larus hyperboreus
management
développement
régime
goéland bourgmestre
déchets humains
prédateurs assistés par les humains
gestion
topic_facet development
diet
glaucous gull
human refuse
human-subsidized predators
Larus hyperboreus
management
développement
régime
goéland bourgmestre
déchets humains
prédateurs assistés par les humains
gestion
url https://journalhosting.ucalgary.ca/index.php/arctic/article/view/67149