Effects of weather and snow conditions on reproduction and survival of semi-domesticated reindeer (R. t. tarandus)
In this work we investigated the effects of local weather and snow conditions on the reproduction and survival of semi-domesticated reindeer (Rangifer t. tarandus) from 1962 to 1987 in four separate study areas in northern Finland. Reindeer density had no negative effect on calf percentage in slaugh...
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Norwegian Polar Institute
2003
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ftjpolarres:oai:journals.openacademia.net:article/2110 2023-05-15T17:13:26+02:00 Effects of weather and snow conditions on reproduction and survival of semi-domesticated reindeer (R. t. tarandus) Kumpula, Jouko Colpaert, Alfred 2003-01-12 application/pdf https://polarresearch.net/index.php/polar/article/view/2110 https://doi.org/10.3402/polar.v22i2.6457 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/2110/5361 https://polarresearch.net/index.php/polar/article/view/2110 doi:10.3402/polar.v22i2.6457 Copyright (c) 2018 Polar Research Polar Research; Vol. 22 No. 2 (2003); 225-233 1751-8369 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2003 ftjpolarres https://doi.org/10.3402/polar.v22i2.6457 2021-11-11T19:11:56Z In this work we investigated the effects of local weather and snow conditions on the reproduction and survival of semi-domesticated reindeer (Rangifer t. tarandus) from 1962 to 1987 in four separate study areas in northern Finland. Reindeer density had no negative effect on calf percentage in slaughter (October-January) in any area. The higher the number of very warm days or mean temperatures in summer, the lower was the calf percentage in all forested areas (Sodankylä, Muonio and Ivalo). In the Muonio area, calf percentage was also reduced by winters with abundant snow accumulation. In the open, mountainous Kevo area, calf percentage was reduced with a high number of warm days (mean T>0°C) during the previous December. However, if the previous May was warm in that area, it had an opposite effect. High reindeer densities seemed to increase mortality only in the Sodankylä area. Abundant snow accumulation during winter reduced the survival index of reindeer both in the Sodankylä and Ivalo areas. In the Muonio area, mortality of reindeer was increased with a high number of warm days in December. In the Kevo area, reindeer density or any climatic parameters could not explain yearly differences in mortality. This study indicated that permanent changes in climatic conditions could have different impacts in woodland as opposed to open, mountainous regions. In general, if global climatic change means weather instability in early winter and more snow, it also brings more difficulties for reindeer. However, if climate change means that snow melts earlier in the spring, some conditions could become more favourable for reindeer. Article in Journal/Newspaper Muonio Northern Finland Polar Research Sodankylä Polar Research (E-Journal) Sodankylä ENVELOPE(26.600,26.600,67.417,67.417) Slaughter ENVELOPE(-85.633,-85.633,-78.617,-78.617) Kevo ENVELOPE(27.020,27.020,69.758,69.758) Muonio ENVELOPE(23.833,23.833,67.833,67.833) Ivalo ENVELOPE(27.543,27.543,68.651,68.651) Polar Research 22 2 225 233 |
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Open Polar |
collection |
Polar Research (E-Journal) |
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ftjpolarres |
language |
English |
description |
In this work we investigated the effects of local weather and snow conditions on the reproduction and survival of semi-domesticated reindeer (Rangifer t. tarandus) from 1962 to 1987 in four separate study areas in northern Finland. Reindeer density had no negative effect on calf percentage in slaughter (October-January) in any area. The higher the number of very warm days or mean temperatures in summer, the lower was the calf percentage in all forested areas (Sodankylä, Muonio and Ivalo). In the Muonio area, calf percentage was also reduced by winters with abundant snow accumulation. In the open, mountainous Kevo area, calf percentage was reduced with a high number of warm days (mean T>0°C) during the previous December. However, if the previous May was warm in that area, it had an opposite effect. High reindeer densities seemed to increase mortality only in the Sodankylä area. Abundant snow accumulation during winter reduced the survival index of reindeer both in the Sodankylä and Ivalo areas. In the Muonio area, mortality of reindeer was increased with a high number of warm days in December. In the Kevo area, reindeer density or any climatic parameters could not explain yearly differences in mortality. This study indicated that permanent changes in climatic conditions could have different impacts in woodland as opposed to open, mountainous regions. In general, if global climatic change means weather instability in early winter and more snow, it also brings more difficulties for reindeer. However, if climate change means that snow melts earlier in the spring, some conditions could become more favourable for reindeer. |
format |
Article in Journal/Newspaper |
author |
Kumpula, Jouko Colpaert, Alfred |
spellingShingle |
Kumpula, Jouko Colpaert, Alfred Effects of weather and snow conditions on reproduction and survival of semi-domesticated reindeer (R. t. tarandus) |
author_facet |
Kumpula, Jouko Colpaert, Alfred |
author_sort |
Kumpula, Jouko |
title |
Effects of weather and snow conditions on reproduction and survival of semi-domesticated reindeer (R. t. tarandus) |
title_short |
Effects of weather and snow conditions on reproduction and survival of semi-domesticated reindeer (R. t. tarandus) |
title_full |
Effects of weather and snow conditions on reproduction and survival of semi-domesticated reindeer (R. t. tarandus) |
title_fullStr |
Effects of weather and snow conditions on reproduction and survival of semi-domesticated reindeer (R. t. tarandus) |
title_full_unstemmed |
Effects of weather and snow conditions on reproduction and survival of semi-domesticated reindeer (R. t. tarandus) |
title_sort |
effects of weather and snow conditions on reproduction and survival of semi-domesticated reindeer (r. t. tarandus) |
publisher |
Norwegian Polar Institute |
publishDate |
2003 |
url |
https://polarresearch.net/index.php/polar/article/view/2110 https://doi.org/10.3402/polar.v22i2.6457 |
long_lat |
ENVELOPE(26.600,26.600,67.417,67.417) ENVELOPE(-85.633,-85.633,-78.617,-78.617) ENVELOPE(27.020,27.020,69.758,69.758) ENVELOPE(23.833,23.833,67.833,67.833) ENVELOPE(27.543,27.543,68.651,68.651) |
geographic |
Sodankylä Slaughter Kevo Muonio Ivalo |
geographic_facet |
Sodankylä Slaughter Kevo Muonio Ivalo |
genre |
Muonio Northern Finland Polar Research Sodankylä |
genre_facet |
Muonio Northern Finland Polar Research Sodankylä |
op_source |
Polar Research; Vol. 22 No. 2 (2003); 225-233 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/2110/5361 https://polarresearch.net/index.php/polar/article/view/2110 doi:10.3402/polar.v22i2.6457 |
op_rights |
Copyright (c) 2018 Polar Research |
op_doi |
https://doi.org/10.3402/polar.v22i2.6457 |
container_title |
Polar Research |
container_volume |
22 |
container_issue |
2 |
container_start_page |
225 |
op_container_end_page |
233 |
_version_ |
1766070554350059520 |