Lichen ranges, animal densities and production in Finnish reindeer management
In the 1970s, mean lichen biomass ranged by the earmark districts (comprising of 2-9 adjacent herding associations) between 54 kg and 380 kg DM per ha correlating negatively with animal density per lichen ranges (range 1.5 - 14.3 ind. per km2). Biomasses were far below economic carrying capacity of...
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Language: | English |
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Septentrio Academic Publishing
1990
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Online Access: | https://septentrio.uit.no/index.php/rangifer/article/view/840 https://doi.org/10.7557/2.10.3.840 |
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ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/840 2023-05-15T18:03:55+02:00 Lichen ranges, animal densities and production in Finnish reindeer management Helle, T. Kilpelä, S.-S. Aikio, P. 1990-09-01 application/pdf https://septentrio.uit.no/index.php/rangifer/article/view/840 https://doi.org/10.7557/2.10.3.840 eng eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/840/803 https://septentrio.uit.no/index.php/rangifer/article/view/840 doi:10.7557/2.10.3.840 Copyright (c) 2015 T. Helle, S.-S. Kilpelä, P. Aikio http://creativecommons.org/licenses/by/3.0/ CC-BY Rangifer; Vol 10 (1990): Special Issue No. 3; 115-121 1890-6729 reindeer range carrying capacity lihen pasture Finland info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1990 ftunitroemsoe https://doi.org/10.7557/2.10.3.840 2021-08-16T14:40:01Z In the 1970s, mean lichen biomass ranged by the earmark districts (comprising of 2-9 adjacent herding associations) between 54 kg and 380 kg DM per ha correlating negatively with animal density per lichen ranges (range 1.5 - 14.3 ind. per km2). Biomasses were far below economic carrying capacity of lichen ranges (900 kg DM per ha). The condition of lichen ranges was poorest in the southern half of the area where alternative food to reindeer lichens (Deschampsia flexuosa, arboreal lichens and supplementary feeding) was available. In 1980-86, recruitment (calves per 100 females) was 33% higher than in the 1970's, on an average (65 vs. 49), despite a 90% increase in animal numbers between 1970 and 1986; recruitment has not been dependent on the condition of lichen ranges. The increase in production has been some higher than expected on the basis of animal numbers. The reasons for the increasing trends in animal numbers, recruitment and production remains some unclear, but they may include favorable winter conditions, supplementary feeding, medical treatment against parasites and proper harvesting policy. Article in Journal/Newspaper Rangifer University of Tromsø: Septentrio Academic Publishing Rangifer 10 3 115 |
institution |
Open Polar |
collection |
University of Tromsø: Septentrio Academic Publishing |
op_collection_id |
ftunitroemsoe |
language |
English |
topic |
reindeer range carrying capacity lihen pasture Finland |
spellingShingle |
reindeer range carrying capacity lihen pasture Finland Helle, T. Kilpelä, S.-S. Aikio, P. Lichen ranges, animal densities and production in Finnish reindeer management |
topic_facet |
reindeer range carrying capacity lihen pasture Finland |
description |
In the 1970s, mean lichen biomass ranged by the earmark districts (comprising of 2-9 adjacent herding associations) between 54 kg and 380 kg DM per ha correlating negatively with animal density per lichen ranges (range 1.5 - 14.3 ind. per km2). Biomasses were far below economic carrying capacity of lichen ranges (900 kg DM per ha). The condition of lichen ranges was poorest in the southern half of the area where alternative food to reindeer lichens (Deschampsia flexuosa, arboreal lichens and supplementary feeding) was available. In 1980-86, recruitment (calves per 100 females) was 33% higher than in the 1970's, on an average (65 vs. 49), despite a 90% increase in animal numbers between 1970 and 1986; recruitment has not been dependent on the condition of lichen ranges. The increase in production has been some higher than expected on the basis of animal numbers. The reasons for the increasing trends in animal numbers, recruitment and production remains some unclear, but they may include favorable winter conditions, supplementary feeding, medical treatment against parasites and proper harvesting policy. |
format |
Article in Journal/Newspaper |
author |
Helle, T. Kilpelä, S.-S. Aikio, P. |
author_facet |
Helle, T. Kilpelä, S.-S. Aikio, P. |
author_sort |
Helle, T. |
title |
Lichen ranges, animal densities and production in Finnish reindeer management |
title_short |
Lichen ranges, animal densities and production in Finnish reindeer management |
title_full |
Lichen ranges, animal densities and production in Finnish reindeer management |
title_fullStr |
Lichen ranges, animal densities and production in Finnish reindeer management |
title_full_unstemmed |
Lichen ranges, animal densities and production in Finnish reindeer management |
title_sort |
lichen ranges, animal densities and production in finnish reindeer management |
publisher |
Septentrio Academic Publishing |
publishDate |
1990 |
url |
https://septentrio.uit.no/index.php/rangifer/article/view/840 https://doi.org/10.7557/2.10.3.840 |
genre |
Rangifer |
genre_facet |
Rangifer |
op_source |
Rangifer; Vol 10 (1990): Special Issue No. 3; 115-121 1890-6729 |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/840/803 https://septentrio.uit.no/index.php/rangifer/article/view/840 doi:10.7557/2.10.3.840 |
op_rights |
Copyright (c) 2015 T. Helle, S.-S. Kilpelä, P. Aikio http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7557/2.10.3.840 |
container_title |
Rangifer |
container_volume |
10 |
container_issue |
3 |
container_start_page |
115 |
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1766175091204292608 |