ARCTIC Distribution, Abundance, Population Structure and Productivity of Tundra Swans in Bristol Bay, Alaska
was advanced 2-4 weeks of swan nesting areas in the Subarctic and Arctic, but a late spring retarded nesting by at least ten days. The highest densities of potential breeders (0.3-0.9 swans.km-’) occurred along the lowland coast and in broad drainage basins. Estimates of the breeding population rang...
Main Author: | |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1988
|
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.591.1308 http://pubs.aina.ucalgary.ca/arctic/Arctic41-4-288.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.591.1308 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.591.1308 2023-05-15T14:19:31+02:00 ARCTIC Distribution, Abundance, Population Structure and Productivity of Tundra Swans in Bristol Bay, Alaska Randall J. Wilk The Pennsylvania State University CiteSeerX Archives 1988 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.591.1308 http://pubs.aina.ucalgary.ca/arctic/Arctic41-4-288.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.591.1308 http://pubs.aina.ucalgary.ca/arctic/Arctic41-4-288.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.aina.ucalgary.ca/arctic/Arctic41-4-288.pdf Traduit pour le journa text 1988 ftciteseerx 2016-01-08T13:31:37Z was advanced 2-4 weeks of swan nesting areas in the Subarctic and Arctic, but a late spring retarded nesting by at least ten days. The highest densities of potential breeders (0.3-0.9 swans.km-’) occurred along the lowland coast and in broad drainage basins. Estimates of the breeding population ranged from 4000 to4600 swans. Brood sizes in August ranged from 2.7 2 0.3 SE to 3.3 2 0.5 young. In summer, 5 1-66 % of the adults and subadults were observed as potential breeders, and the remainder were in nonbreeding flocks. Between 31 and 40 % of the observed pairs had nests or young. The population and production on the Alaska Peninsula may be less affected by weather than populations at higher latitudes. Text Arctic Arctic Subarctic Tundra Alaska Unknown Arctic |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Traduit pour le journa |
spellingShingle |
Traduit pour le journa Randall J. Wilk ARCTIC Distribution, Abundance, Population Structure and Productivity of Tundra Swans in Bristol Bay, Alaska |
topic_facet |
Traduit pour le journa |
description |
was advanced 2-4 weeks of swan nesting areas in the Subarctic and Arctic, but a late spring retarded nesting by at least ten days. The highest densities of potential breeders (0.3-0.9 swans.km-’) occurred along the lowland coast and in broad drainage basins. Estimates of the breeding population ranged from 4000 to4600 swans. Brood sizes in August ranged from 2.7 2 0.3 SE to 3.3 2 0.5 young. In summer, 5 1-66 % of the adults and subadults were observed as potential breeders, and the remainder were in nonbreeding flocks. Between 31 and 40 % of the observed pairs had nests or young. The population and production on the Alaska Peninsula may be less affected by weather than populations at higher latitudes. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Randall J. Wilk |
author_facet |
Randall J. Wilk |
author_sort |
Randall J. Wilk |
title |
ARCTIC Distribution, Abundance, Population Structure and Productivity of Tundra Swans in Bristol Bay, Alaska |
title_short |
ARCTIC Distribution, Abundance, Population Structure and Productivity of Tundra Swans in Bristol Bay, Alaska |
title_full |
ARCTIC Distribution, Abundance, Population Structure and Productivity of Tundra Swans in Bristol Bay, Alaska |
title_fullStr |
ARCTIC Distribution, Abundance, Population Structure and Productivity of Tundra Swans in Bristol Bay, Alaska |
title_full_unstemmed |
ARCTIC Distribution, Abundance, Population Structure and Productivity of Tundra Swans in Bristol Bay, Alaska |
title_sort |
arctic distribution, abundance, population structure and productivity of tundra swans in bristol bay, alaska |
publishDate |
1988 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.591.1308 http://pubs.aina.ucalgary.ca/arctic/Arctic41-4-288.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Subarctic Tundra Alaska |
genre_facet |
Arctic Arctic Subarctic Tundra Alaska |
op_source |
http://pubs.aina.ucalgary.ca/arctic/Arctic41-4-288.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.591.1308 http://pubs.aina.ucalgary.ca/arctic/Arctic41-4-288.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766291345892179968 |