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Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest
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| Zeitschriftentitel: | The Forestry Chronicle |
|---|---|
| Personen und Körperschaften: | , , , , |
| In: | The Forestry Chronicle, 76, 2000, 4, S. 633-642 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Canadian Institute of Forestry
|
| Schlagwörter: |
| author_facet |
Ruel, Jean-Claude Messier, Christian Claveau, Yves Doucet, René Comeau, Phil Ruel, Jean-Claude Messier, Christian Claveau, Yves Doucet, René Comeau, Phil |
|---|---|
| author |
Ruel, Jean-Claude Messier, Christian Claveau, Yves Doucet, René Comeau, Phil |
| spellingShingle |
Ruel, Jean-Claude Messier, Christian Claveau, Yves Doucet, René Comeau, Phil The Forestry Chronicle Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest Forestry |
| author_sort |
ruel, jean-claude |
| spelling |
Ruel, Jean-Claude Messier, Christian Claveau, Yves Doucet, René Comeau, Phil 0015-7546 1499-9315 Canadian Institute of Forestry Forestry http://dx.doi.org/10.5558/tfc76633-4 <jats:p> Regeneration of forest stands through the preservation of existing advance regeneration has gained considerable interest in various regions of North America. The effectiveness of this approach relies on the capacity of regeneration to respond positively to overstory removal. Responses of advance regeneration to release is dependent on tree characteristics and site conditions interacting with the degree of physiological shock caused by the sudden change in environmental conditions. This paper presents a review of the literature describing the relationships between morphological indicators and the advance regeneration response to canopy removal. It focuses primarily on the following species: jack pine (Pinus banksiana Lamb.), lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.), black spruce (Picea mariana (Mill.) B.S.P.), interior spruce (Picea glauca × engelmannii), white spruce (Picea glauca (Moench) Voss), balsam fir (Abies balsamea (L.) Mill.), and subalpine fir (Abies lasiocarpa (Hook.) Nutt). Pre-release height growth has been found to be a good indicator of post-release response for many species. Live-crown ratio also appears to be a good indicator of vigour for shade-tolerant species. The ratio of leader length to length of the longest lateral at the last whorl could serve to describe the degree of suppression before harvest for shade-tolerant species. Number of nodal and internodal branches or buds has been found to be related with vigour for many species. Logging damage has been shown to be an important determinant of seedling response to overstory removal. In contrast, height/diameter ratio has limited value for predicting response to release since it varies with site, species and other factors. No clear relationship between age, height at release and response to release could be demonstrated. This paper also suggests the use of combined indicators and critical threshold values for these indicators. Key words: advance regeneration, careful logging, vigour, clearcutting </jats:p> Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest The Forestry Chronicle |
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| title |
Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest |
| title_unstemmed |
Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest |
| title_full |
Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest |
| title_fullStr |
Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest |
| title_full_unstemmed |
Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest |
| title_short |
Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest |
| title_sort |
morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest |
| topic |
Forestry |
| url |
http://dx.doi.org/10.5558/tfc76633-4 |
| publishDate |
2000 |
| physical |
633-642 |
| description |
<jats:p> Regeneration of forest stands through the preservation of existing advance regeneration has gained considerable interest in various regions of North America. The effectiveness of this approach relies on the capacity of regeneration to respond positively to overstory removal. Responses of advance regeneration to release is dependent on tree characteristics and site conditions interacting with the degree of physiological shock caused by the sudden change in environmental conditions. This paper presents a review of the literature describing the relationships between morphological indicators and the advance regeneration response to canopy removal. It focuses primarily on the following species: jack pine (Pinus banksiana Lamb.), lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.), black spruce (Picea mariana (Mill.) B.S.P.), interior spruce (Picea glauca × engelmannii), white spruce (Picea glauca (Moench) Voss), balsam fir (Abies balsamea (L.) Mill.), and subalpine fir (Abies lasiocarpa (Hook.) Nutt). Pre-release height growth has been found to be a good indicator of post-release response for many species. Live-crown ratio also appears to be a good indicator of vigour for shade-tolerant species. The ratio of leader length to length of the longest lateral at the last whorl could serve to describe the degree of suppression before harvest for shade-tolerant species. Number of nodal and internodal branches or buds has been found to be related with vigour for many species. Logging damage has been shown to be an important determinant of seedling response to overstory removal. In contrast, height/diameter ratio has limited value for predicting response to release since it varies with site, species and other factors. No clear relationship between age, height at release and response to release could be demonstrated. This paper also suggests the use of combined indicators and critical threshold values for these indicators. Key words: advance regeneration, careful logging, vigour, clearcutting </jats:p> |
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| author | Ruel, Jean-Claude, Messier, Christian, Claveau, Yves, Doucet, René, Comeau, Phil |
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| description | <jats:p> Regeneration of forest stands through the preservation of existing advance regeneration has gained considerable interest in various regions of North America. The effectiveness of this approach relies on the capacity of regeneration to respond positively to overstory removal. Responses of advance regeneration to release is dependent on tree characteristics and site conditions interacting with the degree of physiological shock caused by the sudden change in environmental conditions. This paper presents a review of the literature describing the relationships between morphological indicators and the advance regeneration response to canopy removal. It focuses primarily on the following species: jack pine (Pinus banksiana Lamb.), lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.), black spruce (Picea mariana (Mill.) B.S.P.), interior spruce (Picea glauca × engelmannii), white spruce (Picea glauca (Moench) Voss), balsam fir (Abies balsamea (L.) Mill.), and subalpine fir (Abies lasiocarpa (Hook.) Nutt). Pre-release height growth has been found to be a good indicator of post-release response for many species. Live-crown ratio also appears to be a good indicator of vigour for shade-tolerant species. The ratio of leader length to length of the longest lateral at the last whorl could serve to describe the degree of suppression before harvest for shade-tolerant species. Number of nodal and internodal branches or buds has been found to be related with vigour for many species. Logging damage has been shown to be an important determinant of seedling response to overstory removal. In contrast, height/diameter ratio has limited value for predicting response to release since it varies with site, species and other factors. No clear relationship between age, height at release and response to release could be demonstrated. This paper also suggests the use of combined indicators and critical threshold values for these indicators. Key words: advance regeneration, careful logging, vigour, clearcutting </jats:p> |
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| spelling | Ruel, Jean-Claude Messier, Christian Claveau, Yves Doucet, René Comeau, Phil 0015-7546 1499-9315 Canadian Institute of Forestry Forestry http://dx.doi.org/10.5558/tfc76633-4 <jats:p> Regeneration of forest stands through the preservation of existing advance regeneration has gained considerable interest in various regions of North America. The effectiveness of this approach relies on the capacity of regeneration to respond positively to overstory removal. Responses of advance regeneration to release is dependent on tree characteristics and site conditions interacting with the degree of physiological shock caused by the sudden change in environmental conditions. This paper presents a review of the literature describing the relationships between morphological indicators and the advance regeneration response to canopy removal. It focuses primarily on the following species: jack pine (Pinus banksiana Lamb.), lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.), black spruce (Picea mariana (Mill.) B.S.P.), interior spruce (Picea glauca × engelmannii), white spruce (Picea glauca (Moench) Voss), balsam fir (Abies balsamea (L.) Mill.), and subalpine fir (Abies lasiocarpa (Hook.) Nutt). Pre-release height growth has been found to be a good indicator of post-release response for many species. Live-crown ratio also appears to be a good indicator of vigour for shade-tolerant species. The ratio of leader length to length of the longest lateral at the last whorl could serve to describe the degree of suppression before harvest for shade-tolerant species. Number of nodal and internodal branches or buds has been found to be related with vigour for many species. Logging damage has been shown to be an important determinant of seedling response to overstory removal. In contrast, height/diameter ratio has limited value for predicting response to release since it varies with site, species and other factors. No clear relationship between age, height at release and response to release could be demonstrated. This paper also suggests the use of combined indicators and critical threshold values for these indicators. Key words: advance regeneration, careful logging, vigour, clearcutting </jats:p> Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest The Forestry Chronicle |
| spellingShingle | Ruel, Jean-Claude, Messier, Christian, Claveau, Yves, Doucet, René, Comeau, Phil, The Forestry Chronicle, Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest, Forestry |
| title | Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest |
| title_full | Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest |
| title_fullStr | Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest |
| title_full_unstemmed | Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest |
| title_short | Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest |
| title_sort | morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest |
| title_unstemmed | Morphological indicators of growth response of coniferous advance regeneration to overstorey removal in the boreal forest |
| topic | Forestry |
| url | http://dx.doi.org/10.5558/tfc76633-4 |