The impact of human disturbance on the nesting success of the common eider Somateria mollissima /
The influence of human disturbance on the nesting success of the Common eider (Sonateria mollissima) was investigated in the Mingan Archipelago National Park Reserve during summers of 1994 to 19%. Six colonies were used, four located on open islets and two on forested islands. Three experimental tre...
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McGill University
1998
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ftcanadathes:oai:collectionscanada.gc.ca:QMM.20243 2023-05-15T15:55:56+02:00 The impact of human disturbance on the nesting success of the common eider Somateria mollissima / Bolduc, François. Guillemette, Magella (advisor) Titman, Rodger D. (advisor) Master of Science (Department of Natural Resource Sciences.) 1998 application/pdf http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20243 en eng McGill University alephsysno: 001608573 proquestno: MQ44127 Theses scanned by UMI/ProQuest. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20243 All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. Eider -- Québec (Province) -- Mingan Islands -- Reproduction Eider -- Nests -- Québec (Province) -- Mingan Islands Electronic Thesis or Dissertation 1998 ftcanadathes 2014-02-16T00:44:04Z The influence of human disturbance on the nesting success of the Common eider (Sonateria mollissima) was investigated in the Mingan Archipelago National Park Reserve during summers of 1994 to 19%. Six colonies were used, four located on open islets and two on forested islands. Three experimental treatments were used that entailed varying the frequency and time occurrence of visits in incubation. Every years, each treatment was applied to several eider colonies differing in the density of nesting gulls on the same island. During visits, incubating females were flushed and nest fate recorded. Several variables also were measured during visits describing female quality (assessed by clutch size and laying date) and nest site quality (assessed by nest concealment, distance to shore, vegetation height, and density of nesting gulls on the island). Results showed that frequency of visits did not affect nesting success of eiders, mainly because most observed nest failures occurred after the first visit The time occurrence of the first visit during incubation was of primary importance; eider nests visited early were much more affected by our presence. The nesting success of eiders was related to the density of associated colonies of nesting gulls only when visits occurred during early incubation. Female eiders of greater reproductive quality were those most successful when disturbed regularly. These females were in greater proportion on islands associated with lower density of nesting gulls, i.e., on forested islands rather than on open islets. Within colonies, they were mainly found nesting near shore where nest concealment is sparse. Results showed that visits to eider colonies can greatly affect their reproductive output. Visits during early incubation on open islets had the greatest impact. Thesis Common Eider Somateria mollissima Theses Canada/Thèses Canada (Library and Archives Canada) |
institution |
Open Polar |
collection |
Theses Canada/Thèses Canada (Library and Archives Canada) |
op_collection_id |
ftcanadathes |
language |
English |
topic |
Eider -- Québec (Province) -- Mingan Islands -- Reproduction Eider -- Nests -- Québec (Province) -- Mingan Islands |
spellingShingle |
Eider -- Québec (Province) -- Mingan Islands -- Reproduction Eider -- Nests -- Québec (Province) -- Mingan Islands Bolduc, François. The impact of human disturbance on the nesting success of the common eider Somateria mollissima / |
topic_facet |
Eider -- Québec (Province) -- Mingan Islands -- Reproduction Eider -- Nests -- Québec (Province) -- Mingan Islands |
description |
The influence of human disturbance on the nesting success of the Common eider (Sonateria mollissima) was investigated in the Mingan Archipelago National Park Reserve during summers of 1994 to 19%. Six colonies were used, four located on open islets and two on forested islands. Three experimental treatments were used that entailed varying the frequency and time occurrence of visits in incubation. Every years, each treatment was applied to several eider colonies differing in the density of nesting gulls on the same island. During visits, incubating females were flushed and nest fate recorded. Several variables also were measured during visits describing female quality (assessed by clutch size and laying date) and nest site quality (assessed by nest concealment, distance to shore, vegetation height, and density of nesting gulls on the island). Results showed that frequency of visits did not affect nesting success of eiders, mainly because most observed nest failures occurred after the first visit The time occurrence of the first visit during incubation was of primary importance; eider nests visited early were much more affected by our presence. The nesting success of eiders was related to the density of associated colonies of nesting gulls only when visits occurred during early incubation. Female eiders of greater reproductive quality were those most successful when disturbed regularly. These females were in greater proportion on islands associated with lower density of nesting gulls, i.e., on forested islands rather than on open islets. Within colonies, they were mainly found nesting near shore where nest concealment is sparse. Results showed that visits to eider colonies can greatly affect their reproductive output. Visits during early incubation on open islets had the greatest impact. |
author2 |
Guillemette, Magella (advisor) Titman, Rodger D. (advisor) |
format |
Thesis |
author |
Bolduc, François. |
author_facet |
Bolduc, François. |
author_sort |
Bolduc, François. |
title |
The impact of human disturbance on the nesting success of the common eider Somateria mollissima / |
title_short |
The impact of human disturbance on the nesting success of the common eider Somateria mollissima / |
title_full |
The impact of human disturbance on the nesting success of the common eider Somateria mollissima / |
title_fullStr |
The impact of human disturbance on the nesting success of the common eider Somateria mollissima / |
title_full_unstemmed |
The impact of human disturbance on the nesting success of the common eider Somateria mollissima / |
title_sort |
impact of human disturbance on the nesting success of the common eider somateria mollissima / |
publisher |
McGill University |
publishDate |
1998 |
url |
http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20243 |
op_coverage |
Master of Science (Department of Natural Resource Sciences.) |
genre |
Common Eider Somateria mollissima |
genre_facet |
Common Eider Somateria mollissima |
op_relation |
alephsysno: 001608573 proquestno: MQ44127 Theses scanned by UMI/ProQuest. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20243 |
op_rights |
All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
_version_ |
1766391410977669120 |