ARCTIC Productivity and Carrying Capacity of a Subarctic
ABSTRACT. Estimates of range composition and net primary productivity for a IO-year period are presented for the semi-arid grasslands of Sheep Mountain, Kluane National Park, Yukon, the winter range of a Dall’s sheep (Ovis dalfi dalli) population. Estimates varied among plots, d e p d i n g on altit...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.563.1148 2023-05-15T14:19:49+02:00 ARCTIC Productivity and Carrying Capacity of a Subarctic Sheep Winter Range Manfred Hoefs The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.563.1148 http://pubs.aina.ucalgary.ca/arctic/Arctic37-2-141.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.563.1148 http://pubs.aina.ucalgary.ca/arctic/Arctic37-2-141.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.aina.ucalgary.ca/arctic/Arctic37-2-141.pdf text ftciteseerx 2016-01-08T12:08:01Z ABSTRACT. Estimates of range composition and net primary productivity for a IO-year period are presented for the semi-arid grasslands of Sheep Mountain, Kluane National Park, Yukon, the winter range of a Dall’s sheep (Ovis dalfi dalli) population. Estimates varied among plots, d e p d i n g on altitude and aspect, as well as among years, according to rainfall during the growing season. Extremes were 29.1 g.m-2 and 120.1 g.m-. Over the IO-year assessment period, the vegetative composition did not change nor was there a grazing-related reduction in productivity. Winter range use by about 200 sheep was within the carrying capacity of the range. A 4 0 % utilization rate of the winter range forage can evidently be sustained and pro-vides a stocking rate of about 1.9 sheep-monthS.ha-I. A significant correlation is demonstrated between forage production of the winter range, lamb survival the following winter, and lamb production the following spring. This correlation indicates that a form of self-regulation of the sheep popula-tion is functioning. Key words: productivity of subarctic, semi-arid grasslands; Dall’s sheep, carrying capacity, Kluane National Park, Yukon &SUM&. L’auteur presente des evaluations de la port&, de la composition et de la productivite primaire nette durant un @riode de IO ans pour la prairie semi-aride de la montagne Sheep, dans le parc national Kluane, au Yukon, le terrain hivernal d’une population de moulfons de Dall (Ovis dalli da l f i). Les evaluations varient selon les terrains, dependent de l’altitude et de l’aspect, et aussi selon les ann&, par rapport B la prkipitation durant la saison de croissance. Les extremes ktaients de 29.1 g.m-2 et 120.1 g.m-2. Au cours de la @riode d’etude de IO ans, la composition vegetative ne changea pas et la phturage n’occasionna aucune rauction en productivite. Le territoire d’hiver occup6 par quelque 200 mouflons pouvait bien sup-porter ces derniers. Un taux d’utilisation de 40 % du fourrage du territoire d’hiver peut evidemment &re ... Text Arctic Arctic Kluane National Park Subarctic Yukon Unknown Arctic Yukon |
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ftciteseerx |
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English |
description |
ABSTRACT. Estimates of range composition and net primary productivity for a IO-year period are presented for the semi-arid grasslands of Sheep Mountain, Kluane National Park, Yukon, the winter range of a Dall’s sheep (Ovis dalfi dalli) population. Estimates varied among plots, d e p d i n g on altitude and aspect, as well as among years, according to rainfall during the growing season. Extremes were 29.1 g.m-2 and 120.1 g.m-. Over the IO-year assessment period, the vegetative composition did not change nor was there a grazing-related reduction in productivity. Winter range use by about 200 sheep was within the carrying capacity of the range. A 4 0 % utilization rate of the winter range forage can evidently be sustained and pro-vides a stocking rate of about 1.9 sheep-monthS.ha-I. A significant correlation is demonstrated between forage production of the winter range, lamb survival the following winter, and lamb production the following spring. This correlation indicates that a form of self-regulation of the sheep popula-tion is functioning. Key words: productivity of subarctic, semi-arid grasslands; Dall’s sheep, carrying capacity, Kluane National Park, Yukon &SUM&. L’auteur presente des evaluations de la port&, de la composition et de la productivite primaire nette durant un @riode de IO ans pour la prairie semi-aride de la montagne Sheep, dans le parc national Kluane, au Yukon, le terrain hivernal d’une population de moulfons de Dall (Ovis dalli da l f i). Les evaluations varient selon les terrains, dependent de l’altitude et de l’aspect, et aussi selon les ann&, par rapport B la prkipitation durant la saison de croissance. Les extremes ktaients de 29.1 g.m-2 et 120.1 g.m-2. Au cours de la @riode d’etude de IO ans, la composition vegetative ne changea pas et la phturage n’occasionna aucune rauction en productivite. Le territoire d’hiver occup6 par quelque 200 mouflons pouvait bien sup-porter ces derniers. Un taux d’utilisation de 40 % du fourrage du territoire d’hiver peut evidemment &re ... |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Sheep Winter Range Manfred Hoefs |
spellingShingle |
Sheep Winter Range Manfred Hoefs ARCTIC Productivity and Carrying Capacity of a Subarctic |
author_facet |
Sheep Winter Range Manfred Hoefs |
author_sort |
Sheep Winter Range |
title |
ARCTIC Productivity and Carrying Capacity of a Subarctic |
title_short |
ARCTIC Productivity and Carrying Capacity of a Subarctic |
title_full |
ARCTIC Productivity and Carrying Capacity of a Subarctic |
title_fullStr |
ARCTIC Productivity and Carrying Capacity of a Subarctic |
title_full_unstemmed |
ARCTIC Productivity and Carrying Capacity of a Subarctic |
title_sort |
arctic productivity and carrying capacity of a subarctic |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.563.1148 http://pubs.aina.ucalgary.ca/arctic/Arctic37-2-141.pdf |
geographic |
Arctic Yukon |
geographic_facet |
Arctic Yukon |
genre |
Arctic Arctic Kluane National Park Subarctic Yukon |
genre_facet |
Arctic Arctic Kluane National Park Subarctic Yukon |
op_source |
http://pubs.aina.ucalgary.ca/arctic/Arctic37-2-141.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.563.1148 http://pubs.aina.ucalgary.ca/arctic/Arctic37-2-141.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766291545894420480 |