Marshal creek clear cut studies, reforestation rates, seedling survival
Overview description: Many different forestry studies have been undertaken in the Marshal creek area. What began as an analysis of a clear-cut forestry practice followed many different paths of inquiry. The list below identifies most of the studies undertaken. The regeneration study is still underway after 18 years.
Seedling Growth and Survival in Yukon Forests Experiential Science classes have been studying the growth and survival of seedlings in a variety of Yukon Forest settings. We have recorded natural seedling growth in mature forest stands, regeneration in burn stands and growth and health of seedlings in a variety of cut blocks. Seedling analysis has been conducted with the context of the Forest Structure Analysis protocol which provides information on an array of related topics.
Natural seedling studies. The Experiential Science classes have established eight permanent lots in three areas: Whitehorse, Haines Junction and Marsh Lake. We have been keeping a record of these numbered seedlings within each of these plots. Each seedling ( a tree less than 2 m in height) within the plot has been numbered. Information respecting species, height, leader length ,health, competition, age and whether it has been nibbled or damaged has been catalogued and is maintained on an annual basis.
Regeneration following fire: Experiential Science has established six permanent 30m triangular plots in and about the 1998 fire along the Mount Mac Lower Valley Trail. We have placed plots in areas that were slightly burned, heavily burned and not burned at all. One plot is located on the margin of the burn. We have been keeping records of changing ground cover following the burn and survey the entire plots for and emergent seedlings.
Seedlings in Cut Blocks: We have focused on two areas: The Marshal Creek clear cuts in the Haines Junction area planted by Yukon Forestry, and the Marsh Lake patch cuts where the ACES and Experiential Science classes planted in 1998. Our goals has been to study various aspects of seedling survival, growth, and predation. Each seedling within the plot has been numbered and is identified as a natural or planted seedling. Information respecting species, height, leader length ,health, competition, age and whether it has been nibbled or damaged has been catalogued and is maintained on an annual basis. Protocol: Data: Data collected from these various sites are entered into an ongoing database of seedlings. These data provide students with the information required to complete silviculture prescriptions as part of their Forests 11 program. We have also attached data from various site.
Blow down along margins of clear Cuts: We ran 100 meter transects parallel to the margins of clearcuts at 20 and 40 meters back from the edge of the clearcut. We counted course woody dwebris along thses transects and were able to contrast this data with similar 100 meter transects through sectiions of uncut forest.
Analysis of Bais in Seedling Growth Measurements: We discovered that Yukon Forestry had established seedling growth plots in the Marshal Crear Cuts in areas that had slash pilled and burned before planting. These areas represented, in total, less than 10 % of the clearcuts. We set out similar 10 meter by 10 meter plots adjacent to the Forestry study plots, measured the seedling height and health and conducted similar analysis within the Forestry plots. We found that the plots within the burn areas showed a 25 to 35 percewnt greater growth rate than those in the adjacent plots. We found ten of the forestry plots all in burn zones. We duplicated the study in four of the areas and found similar results. We calculated the probibility of selecting all ten of these plots in a random fashion and deternined that they had introduced an intentional bais.
Community interest or concern: Initially we discussed out studies with the Alsek Renewable Resource Council and they in turn requested the ES 11 class to follow some other studies of particular interest to the council. We then received some inquires for Yukon College RR Program that led us into creating additional study areas and examining some of the Yukon Forestry studies. Students made many presentations: Yukon Forestry Council regarding growth rates, Alsek Renewable Resource Council regarding local forestry practice, Yukon College public session etc.
Duration of study and numbers involved. These studies began in 1995 and carry on to the present.
Protocols followed and resources. We have been using the forest structure analysis developed by Dan Farr at the Foothill Model Forest.
Contact person and more detailed information. Bob Sharp, Alain Dalaire, Kevin O’Connor, Mike Crawshaw (Alsek Renewable Resource Council) Scott Gilbert, RRProgram at Yukon College,
Spruce beetle analysis, impacts on forest structure beetle life cycle
Overview description: Spruce Bark Beetle Studies: Over the past five years students have been studying the spruce bark beetle infestation in the Kluane region. our classes have been using the protocol developed by Federal Dept of Forestry with tow adaptations. The Prince George protocol set out a 100 m transect through an areas that had been given a walk through survey. This protocol measured all trees greater than 17.5 cm DBH within 5 meters of the line and plotted and recorded each tree by size and infestation condition. The Experiential science classes have identified infested stands, set out parallel 100 m survey transects 50 m apart and counted all trees greater than 5 cm DBH to provided a better representation of the forest ecology. Students periodically do bark samples of infected trees, identifying counts of larva, adults and pupa stage bark beetles. The data students have collected is displayed on the attached page. Our studies show results that differ with those done by others for Forestry. We have assembled more than 10 years of eight 100 m transects studies each year.
Overview description: Many different forestry studies have been undertaken in the Marshal creek area. What began as an analysis of a clear-cut forestry practice followed many different paths of inquiry. The list below identifies most of the studies undertaken. The regeneration study is still underway after 18 years.
Seedling Growth and Survival in Yukon Forests Experiential Science classes have been studying the growth and survival of seedlings in a variety of Yukon Forest settings. We have recorded natural seedling growth in mature forest stands, regeneration in burn stands and growth and health of seedlings in a variety of cut blocks. Seedling analysis has been conducted with the context of the Forest Structure Analysis protocol which provides information on an array of related topics.
Natural seedling studies. The Experiential Science classes have established eight permanent lots in three areas: Whitehorse, Haines Junction and Marsh Lake. We have been keeping a record of these numbered seedlings within each of these plots. Each seedling ( a tree less than 2 m in height) within the plot has been numbered. Information respecting species, height, leader length ,health, competition, age and whether it has been nibbled or damaged has been catalogued and is maintained on an annual basis.
Regeneration following fire: Experiential Science has established six permanent 30m triangular plots in and about the 1998 fire along the Mount Mac Lower Valley Trail. We have placed plots in areas that were slightly burned, heavily burned and not burned at all. One plot is located on the margin of the burn. We have been keeping records of changing ground cover following the burn and survey the entire plots for and emergent seedlings.
Seedlings in Cut Blocks: We have focused on two areas: The Marshal Creek clear cuts in the Haines Junction area planted by Yukon Forestry, and the Marsh Lake patch cuts where the ACES and Experiential Science classes planted in 1998. Our goals has been to study various aspects of seedling survival, growth, and predation. Each seedling within the plot has been numbered and is identified as a natural or planted seedling. Information respecting species, height, leader length ,health, competition, age and whether it has been nibbled or damaged has been catalogued and is maintained on an annual basis. Protocol: Data: Data collected from these various sites are entered into an ongoing database of seedlings. These data provide students with the information required to complete silviculture prescriptions as part of their Forests 11 program. We have also attached data from various site.
Blow down along margins of clear Cuts: We ran 100 meter transects parallel to the margins of clearcuts at 20 and 40 meters back from the edge of the clearcut. We counted course woody dwebris along thses transects and were able to contrast this data with similar 100 meter transects through sectiions of uncut forest.
Analysis of Bais in Seedling Growth Measurements: We discovered that Yukon Forestry had established seedling growth plots in the Marshal Crear Cuts in areas that had slash pilled and burned before planting. These areas represented, in total, less than 10 % of the clearcuts. We set out similar 10 meter by 10 meter plots adjacent to the Forestry study plots, measured the seedling height and health and conducted similar analysis within the Forestry plots. We found that the plots within the burn areas showed a 25 to 35 percewnt greater growth rate than those in the adjacent plots. We found ten of the forestry plots all in burn zones. We duplicated the study in four of the areas and found similar results. We calculated the probibility of selecting all ten of these plots in a random fashion and deternined that they had introduced an intentional bais.
Community interest or concern: Initially we discussed out studies with the Alsek Renewable Resource Council and they in turn requested the ES 11 class to follow some other studies of particular interest to the council. We then received some inquires for Yukon College RR Program that led us into creating additional study areas and examining some of the Yukon Forestry studies. Students made many presentations: Yukon Forestry Council regarding growth rates, Alsek Renewable Resource Council regarding local forestry practice, Yukon College public session etc.
Duration of study and numbers involved. These studies began in 1995 and carry on to the present.
Protocols followed and resources. We have been using the forest structure analysis developed by Dan Farr at the Foothill Model Forest.
Contact person and more detailed information. Bob Sharp, Alain Dalaire, Kevin O’Connor, Mike Crawshaw (Alsek Renewable Resource Council) Scott Gilbert, RRProgram at Yukon College,
Spruce beetle analysis, impacts on forest structure beetle life cycle
Overview description: Spruce Bark Beetle Studies: Over the past five years students have been studying the spruce bark beetle infestation in the Kluane region. our classes have been using the protocol developed by Federal Dept of Forestry with tow adaptations. The Prince George protocol set out a 100 m transect through an areas that had been given a walk through survey. This protocol measured all trees greater than 17.5 cm DBH within 5 meters of the line and plotted and recorded each tree by size and infestation condition. The Experiential science classes have identified infested stands, set out parallel 100 m survey transects 50 m apart and counted all trees greater than 5 cm DBH to provided a better representation of the forest ecology. Students periodically do bark samples of infected trees, identifying counts of larva, adults and pupa stage bark beetles. The data students have collected is displayed on the attached page. Our studies show results that differ with those done by others for Forestry. We have assembled more than 10 years of eight 100 m transects studies each year.