Regional differences in density-dependent mortality and reproduction in Finnish reindeer
Reindeer in the southern and central regions of reindeer husbandry in Finland feed on arboreal lichens or are given supplementary rations from midwinter whereas in the northern region reindeer use snow-covered forage throughout winter. Rates of mortality and reproduction were examined using data fro...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Septentrio Academic Publishing
1993
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Online Access: | https://septentrio.uit.no/index.php/rangifer/article/view/1070 https://doi.org/10.7557/2.13.1.1070 |
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ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/1070 2023-05-15T17:42:26+02:00 Regional differences in density-dependent mortality and reproduction in Finnish reindeer Kojola, Ilpo Helle, Timo 1993-10-01 application/pdf https://septentrio.uit.no/index.php/rangifer/article/view/1070 https://doi.org/10.7557/2.13.1.1070 eng eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/1070/1022 https://septentrio.uit.no/index.php/rangifer/article/view/1070 doi:10.7557/2.13.1.1070 Copyright (c) 2015 Ilpo Kojola, Timo Helle http://creativecommons.org/licenses/by/3.0/ CC-BY Rangifer; Årg 13 Nr 1 (1993); 33-38 Rangifer; Vol 13 No 1 (1993); 33-38 1890-6729 density-dependence mortality reproduction forest cutting reindeer Finland info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1993 ftunitroemsoe https://doi.org/10.7557/2.13.1.1070 2021-08-16T14:49:07Z Reindeer in the southern and central regions of reindeer husbandry in Finland feed on arboreal lichens or are given supplementary rations from midwinter whereas in the northern region reindeer use snow-covered forage throughout winter. Rates of mortality and reproduction were examined using data from population crashes of semi-domesticated reindeer that occurred in Northern Finland during 1960-1987. The mortality and reproductive rate were density-dependent in the southern region and the mortality was density-dependent in the central region. The density-dependence was most probably due to food competition in forest cutting areas where reindeer gather to feed on arboreal lichens from felled trees. In the northern region mortality was not density-dependent indicating that where reindeer feed on over-utilized winter range the effects of increased feeding competition are masked by very large changes in the availability of forage. Article in Journal/Newspaper Northern Finland Rangifer reindeer husbandry University of Tromsø: Septentrio Academic Publishing Midwinter ENVELOPE(139.931,139.931,-66.690,-66.690) Rangifer 13 1 33 |
institution |
Open Polar |
collection |
University of Tromsø: Septentrio Academic Publishing |
op_collection_id |
ftunitroemsoe |
language |
English |
topic |
density-dependence mortality reproduction forest cutting reindeer Finland |
spellingShingle |
density-dependence mortality reproduction forest cutting reindeer Finland Kojola, Ilpo Helle, Timo Regional differences in density-dependent mortality and reproduction in Finnish reindeer |
topic_facet |
density-dependence mortality reproduction forest cutting reindeer Finland |
description |
Reindeer in the southern and central regions of reindeer husbandry in Finland feed on arboreal lichens or are given supplementary rations from midwinter whereas in the northern region reindeer use snow-covered forage throughout winter. Rates of mortality and reproduction were examined using data from population crashes of semi-domesticated reindeer that occurred in Northern Finland during 1960-1987. The mortality and reproductive rate were density-dependent in the southern region and the mortality was density-dependent in the central region. The density-dependence was most probably due to food competition in forest cutting areas where reindeer gather to feed on arboreal lichens from felled trees. In the northern region mortality was not density-dependent indicating that where reindeer feed on over-utilized winter range the effects of increased feeding competition are masked by very large changes in the availability of forage. |
format |
Article in Journal/Newspaper |
author |
Kojola, Ilpo Helle, Timo |
author_facet |
Kojola, Ilpo Helle, Timo |
author_sort |
Kojola, Ilpo |
title |
Regional differences in density-dependent mortality and reproduction in Finnish reindeer |
title_short |
Regional differences in density-dependent mortality and reproduction in Finnish reindeer |
title_full |
Regional differences in density-dependent mortality and reproduction in Finnish reindeer |
title_fullStr |
Regional differences in density-dependent mortality and reproduction in Finnish reindeer |
title_full_unstemmed |
Regional differences in density-dependent mortality and reproduction in Finnish reindeer |
title_sort |
regional differences in density-dependent mortality and reproduction in finnish reindeer |
publisher |
Septentrio Academic Publishing |
publishDate |
1993 |
url |
https://septentrio.uit.no/index.php/rangifer/article/view/1070 https://doi.org/10.7557/2.13.1.1070 |
long_lat |
ENVELOPE(139.931,139.931,-66.690,-66.690) |
geographic |
Midwinter |
geographic_facet |
Midwinter |
genre |
Northern Finland Rangifer reindeer husbandry |
genre_facet |
Northern Finland Rangifer reindeer husbandry |
op_source |
Rangifer; Årg 13 Nr 1 (1993); 33-38 Rangifer; Vol 13 No 1 (1993); 33-38 1890-6729 |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/1070/1022 https://septentrio.uit.no/index.php/rangifer/article/view/1070 doi:10.7557/2.13.1.1070 |
op_rights |
Copyright (c) 2015 Ilpo Kojola, Timo Helle http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7557/2.13.1.1070 |
container_title |
Rangifer |
container_volume |
13 |
container_issue |
1 |
container_start_page |
33 |
_version_ |
1766144298269540352 |