Dynamics of moose populations in the AOSERP study area in northeastern Alberta
Intensive studies of moose were conducted on a 25 000 km study area in northeastern Alberta from January 1976 to June 1978. Sixty-six moose (Alces alces) were radio-collared and another eight were colour-marked only. The population is either stationary or slowly declining. An estimate of 4595 (0.18/...
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ftunivalberta:oai:era.library.ualberta.ca:86e9df2b-24e2-43f9-aef1-cccf6a6bb687 2023-05-15T13:13:48+02:00 Dynamics of moose populations in the AOSERP study area in northeastern Alberta Keith, L. B. Hauge, T. M. 1980 https://era.library.ualberta.ca/items/86e9df2b-24e2-43f9-aef1-cccf6a6bb687 https://doi.org/10.7939/R3J960H4V English eng https://era.library.ualberta.ca/items/86e9df2b-24e2-43f9-aef1-cccf6a6bb687 doi:10.7939/R3J960H4V This material is provided under educational reproduction permissions included in Alberta Environment and Sustainable Resource Development's Copyright and Disclosure Statement, see terms at http://www.environment.alberta.ca/copyright.html. This Statement requires the following identification: \"The source of the materials is Alberta Environment and Sustainable Resource Development http://www.environment.gov.ab.ca/. The use of these materials by the end user is done without any affiliation with or endorsement by the Government of Alberta. Reliance upon the end user's use of these materials is at the risk of the end user. Oil Sands AOSERP Surveys Moose Tar Sands Wildlife Remote Sensing Alberta AOSERP LS 21.1.1 Report 1980 ftunivalberta https://doi.org/10.7939/R3J960H4V 2022-08-22T20:12:04Z Intensive studies of moose were conducted on a 25 000 km study area in northeastern Alberta from January 1976 to June 1978. Sixty-six moose (Alces alces) were radio-collared and another eight were colour-marked only. The population is either stationary or slowly declining. An estimate of 4595 (0.18/km2) for the entire study area was obtained in the winter of 1977-78. Moose were largely absent in winter from the Birch Mountains and the jack pine area north of the Firebag River. There was a significant increase in the proportion of yearlings in the population between the winters of 1975-76, as a result of higher reproduction and/or calf survival in 1975-76. Our best estimate of the combined yearling and adult sex ratio was 30:70. There was a significant inverse relationship (r2 = 0.62) between age of radio-collared bulls and dates of antler drop. Seasonal shifts between winter and summer home ranges were made by 34 (76%) of 45 moose; 13 (38%) of these movements exceeded 20 km. No significant differences in home-range size were found between sexes and seasons. Three distinct periods of increased movement among bulls were observed; April-May, September-October, and December-January. Cow movements were more leisurely and less well-defined. Spring (May-June) calf-cow ratios among radio-collared cows >3 years old averaged 88:100. Calf production as indexed by calf-cow ratios was similar in spring (May-June) 1976 and 1978, but autumn ratios were higher in 1977 than 1976. Calves constituted 30% of the winter populations in 1975-76, 18% in 1976-77, and 20% in 1977-78. The annual survival rate of calves of radio-collared cows was 0.27. Survival of these calves was lowest in the first month of life (0.61) and rose in subsequent months (0.95). An estimated 29% of calf losses were due to wolf predation. The annual survival rate of radio-collared yearlings and adults averaged 0.75. A second estimate of 0.76 to 0.77 was obtained independently from demographic and kill data for the entire study area population in 1977-78. ... Report Alces alces University of Alberta: Era - Education and Research Archive Birch Mountains ENVELOPE(-113.169,-113.169,57.500,57.500) Firebag River ENVELOPE(-110.002,-110.002,57.350,57.350) |
institution |
Open Polar |
collection |
University of Alberta: Era - Education and Research Archive |
op_collection_id |
ftunivalberta |
language |
English |
topic |
Oil Sands AOSERP Surveys Moose Tar Sands Wildlife Remote Sensing Alberta AOSERP LS 21.1.1 |
spellingShingle |
Oil Sands AOSERP Surveys Moose Tar Sands Wildlife Remote Sensing Alberta AOSERP LS 21.1.1 Keith, L. B. Hauge, T. M. Dynamics of moose populations in the AOSERP study area in northeastern Alberta |
topic_facet |
Oil Sands AOSERP Surveys Moose Tar Sands Wildlife Remote Sensing Alberta AOSERP LS 21.1.1 |
description |
Intensive studies of moose were conducted on a 25 000 km study area in northeastern Alberta from January 1976 to June 1978. Sixty-six moose (Alces alces) were radio-collared and another eight were colour-marked only. The population is either stationary or slowly declining. An estimate of 4595 (0.18/km2) for the entire study area was obtained in the winter of 1977-78. Moose were largely absent in winter from the Birch Mountains and the jack pine area north of the Firebag River. There was a significant increase in the proportion of yearlings in the population between the winters of 1975-76, as a result of higher reproduction and/or calf survival in 1975-76. Our best estimate of the combined yearling and adult sex ratio was 30:70. There was a significant inverse relationship (r2 = 0.62) between age of radio-collared bulls and dates of antler drop. Seasonal shifts between winter and summer home ranges were made by 34 (76%) of 45 moose; 13 (38%) of these movements exceeded 20 km. No significant differences in home-range size were found between sexes and seasons. Three distinct periods of increased movement among bulls were observed; April-May, September-October, and December-January. Cow movements were more leisurely and less well-defined. Spring (May-June) calf-cow ratios among radio-collared cows >3 years old averaged 88:100. Calf production as indexed by calf-cow ratios was similar in spring (May-June) 1976 and 1978, but autumn ratios were higher in 1977 than 1976. Calves constituted 30% of the winter populations in 1975-76, 18% in 1976-77, and 20% in 1977-78. The annual survival rate of calves of radio-collared cows was 0.27. Survival of these calves was lowest in the first month of life (0.61) and rose in subsequent months (0.95). An estimated 29% of calf losses were due to wolf predation. The annual survival rate of radio-collared yearlings and adults averaged 0.75. A second estimate of 0.76 to 0.77 was obtained independently from demographic and kill data for the entire study area population in 1977-78. ... |
format |
Report |
author |
Keith, L. B. Hauge, T. M. |
author_facet |
Keith, L. B. Hauge, T. M. |
author_sort |
Keith, L. B. |
title |
Dynamics of moose populations in the AOSERP study area in northeastern Alberta |
title_short |
Dynamics of moose populations in the AOSERP study area in northeastern Alberta |
title_full |
Dynamics of moose populations in the AOSERP study area in northeastern Alberta |
title_fullStr |
Dynamics of moose populations in the AOSERP study area in northeastern Alberta |
title_full_unstemmed |
Dynamics of moose populations in the AOSERP study area in northeastern Alberta |
title_sort |
dynamics of moose populations in the aoserp study area in northeastern alberta |
publishDate |
1980 |
url |
https://era.library.ualberta.ca/items/86e9df2b-24e2-43f9-aef1-cccf6a6bb687 https://doi.org/10.7939/R3J960H4V |
long_lat |
ENVELOPE(-113.169,-113.169,57.500,57.500) ENVELOPE(-110.002,-110.002,57.350,57.350) |
geographic |
Birch Mountains Firebag River |
geographic_facet |
Birch Mountains Firebag River |
genre |
Alces alces |
genre_facet |
Alces alces |
op_relation |
https://era.library.ualberta.ca/items/86e9df2b-24e2-43f9-aef1-cccf6a6bb687 doi:10.7939/R3J960H4V |
op_rights |
This material is provided under educational reproduction permissions included in Alberta Environment and Sustainable Resource Development's Copyright and Disclosure Statement, see terms at http://www.environment.alberta.ca/copyright.html. This Statement requires the following identification: \"The source of the materials is Alberta Environment and Sustainable Resource Development http://www.environment.gov.ab.ca/. The use of these materials by the end user is done without any affiliation with or endorsement by the Government of Alberta. Reliance upon the end user's use of these materials is at the risk of the end user. |
op_doi |
https://doi.org/10.7939/R3J960H4V |
_version_ |
1766260551923531776 |