071089_Innmat_8.indd
Abstract: The mountain ecotype of the woodland caribou (Rangifer tarandus caribou) is highly dependent on the arboreal hair lichens Bryoria spp. and Alectoria sarmentosa during winter. In parts of British Columbia, partial-cutting silvicultural systems have been used in an effort to provide continuo...
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1054.4083 http://wetbelt.unbc.ca/docs/Stevenson_etal_3.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.1054.4083 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.1054.4083 2023-05-15T18:04:23+02:00 071089_Innmat_8.indd Susan K Stevenson Darwyn S Coxson Torger The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1054.4083 http://wetbelt.unbc.ca/docs/Stevenson_etal_3.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1054.4083 http://wetbelt.unbc.ca/docs/Stevenson_etal_3.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://wetbelt.unbc.ca/docs/Stevenson_etal_3.pdf text ftciteseerx 2020-04-12T00:19:48Z Abstract: The mountain ecotype of the woodland caribou (Rangifer tarandus caribou) is highly dependent on the arboreal hair lichens Bryoria spp. and Alectoria sarmentosa during winter. In parts of British Columbia, partial-cutting silvicultural systems have been used in an effort to provide continuously usable winter habitat for mountain caribou, while allowing some timber removal. We reviewed available information about the changes in hair lichens after partial cutting in Engelmann spruce (Picea engelmannii) -subalpine fir (Abies lasiocarpa) forests of British Columbian and Idaho. Generally, abundance of Bryoria spp. in the lower canopy of individual residual trees increases with increased exposure after partial cutting, until the new regeneration begins to shelter the lower canopy of the residuals. Heavy basal area removal, however, results in low lichen availability at the stand level for many years. Abundance of Bryoria on the regeneration is low, and appears to be limited largely by the structure of the young trees, not by lichen dispersal, although dispersal capability may be limiting in Alectoria. Both distributional and physiological data suggest that Bryoria is intolerant of prolonged wetting, and that increased ventilation, rather than increased light, accounts for enhanced Bryoria abundance in the partial cuts. Alectoria sarmentosa reaches its physiological optimum in the lower canopy of unharvested stands; its growth rates are somewhat reduced in the more exposed environment of partial cuts. Both genera are capable of rapid growth: over a 7-year period, individual thalli of A. sarmentosa and Bryoria spp. (excluding those with a net biomass loss due to fragmentation) in an unlogged stand more than tripled their biomass. Calculated growth rates, as well as dispersal potential, are influenced by fragmentation. Bryoria produces more abundant, but smaller, fragments than Alectoria, and fragmentation in both genera increases in partial cuts. In subalpine mountain caribou habitat, partial-cutting ... Text Rangifer tarandus Unknown Alectoria ENVELOPE(-58.640,-58.640,-63.977,-63.977) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Abstract: The mountain ecotype of the woodland caribou (Rangifer tarandus caribou) is highly dependent on the arboreal hair lichens Bryoria spp. and Alectoria sarmentosa during winter. In parts of British Columbia, partial-cutting silvicultural systems have been used in an effort to provide continuously usable winter habitat for mountain caribou, while allowing some timber removal. We reviewed available information about the changes in hair lichens after partial cutting in Engelmann spruce (Picea engelmannii) -subalpine fir (Abies lasiocarpa) forests of British Columbian and Idaho. Generally, abundance of Bryoria spp. in the lower canopy of individual residual trees increases with increased exposure after partial cutting, until the new regeneration begins to shelter the lower canopy of the residuals. Heavy basal area removal, however, results in low lichen availability at the stand level for many years. Abundance of Bryoria on the regeneration is low, and appears to be limited largely by the structure of the young trees, not by lichen dispersal, although dispersal capability may be limiting in Alectoria. Both distributional and physiological data suggest that Bryoria is intolerant of prolonged wetting, and that increased ventilation, rather than increased light, accounts for enhanced Bryoria abundance in the partial cuts. Alectoria sarmentosa reaches its physiological optimum in the lower canopy of unharvested stands; its growth rates are somewhat reduced in the more exposed environment of partial cuts. Both genera are capable of rapid growth: over a 7-year period, individual thalli of A. sarmentosa and Bryoria spp. (excluding those with a net biomass loss due to fragmentation) in an unlogged stand more than tripled their biomass. Calculated growth rates, as well as dispersal potential, are influenced by fragmentation. Bryoria produces more abundant, but smaller, fragments than Alectoria, and fragmentation in both genera increases in partial cuts. In subalpine mountain caribou habitat, partial-cutting ... |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Susan K Stevenson Darwyn S Coxson Torger |
spellingShingle |
Susan K Stevenson Darwyn S Coxson Torger 071089_Innmat_8.indd |
author_facet |
Susan K Stevenson Darwyn S Coxson Torger |
author_sort |
Susan K Stevenson |
title |
071089_Innmat_8.indd |
title_short |
071089_Innmat_8.indd |
title_full |
071089_Innmat_8.indd |
title_fullStr |
071089_Innmat_8.indd |
title_full_unstemmed |
071089_Innmat_8.indd |
title_sort |
071089_innmat_8.indd |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1054.4083 http://wetbelt.unbc.ca/docs/Stevenson_etal_3.pdf |
long_lat |
ENVELOPE(-58.640,-58.640,-63.977,-63.977) |
geographic |
Alectoria |
geographic_facet |
Alectoria |
genre |
Rangifer tarandus |
genre_facet |
Rangifer tarandus |
op_source |
http://wetbelt.unbc.ca/docs/Stevenson_etal_3.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1054.4083 http://wetbelt.unbc.ca/docs/Stevenson_etal_3.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766175756672565248 |