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Sampling Yields and Utilization of Browse on Winter Deer Ranges in Northern Idaho Item Info

An investigation of methods concerned with browse measurements on winter deer ranges was carried on during fall and winter of 1949-1950. The site of operations was an area of cut-over white pine forest included within a part of the University of Idaho Experimental Forest in Latah County, Idaho. A typical wintering area was sampled to study the relative efficiency of plots for sampling yields of winter deer browse. It was an upland Douglas fir type on which snowberry, baldhip rose and serviceberry produced approximately 92% of the forage. The current annual twig growth of browse species was harvested from twelve large plots. Six of the major plots were located within a block 288 feet wide and 396 feet long and the other six were located within a block of the same size. A major plot was six feet wide and forty-eight feet long and was divided in such a way that it contained six one by eight foot subplots, six two by eight foot subplots, and six three by eight foot subplots. The forage weights were separated by species and comparisons made with a density estimate method of determining relative abundance. Browse between the ground level and a height of six feet was harvested but the first one foot level was collected separately. To study winter use of browse 128 utilization transects were distributed in both the Douglas fir and arborvitae zones. A transect consisted of a line, fifty feet in length, along which browse plants were tagged and measured. The current annual twig growth was measured in inches before the winter browsing season began. Plants were re measured the following spring to determine the amount of browsing. The crown intercept of browse species was recorded for each transect to the nearest one-tenth of one foot. Snow trailing was employed as a check against the twig measurement method of utilization determination. Deer trails were followed in the snow and counts were made of freshly browsed twigs.

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Title:
Sampling Yields and Utilization of Browse on Winter Deer Ranges in Northern Idaho
Creator:
Morton, Allen D.
Date Created:
1950
Description:
An investigation of methods concerned with browse measurements on winter deer ranges was carried on during fall and winter of 1949-1950. The site of operations was an area of cut-over white pine forest included within a part of the University of Idaho Experimental Forest in Latah County, Idaho. A typical wintering area was sampled to study the relative efficiency of plots for sampling yields of winter deer browse. It was an upland Douglas fir type on which snowberry, baldhip rose and serviceberry produced approximately 92% of the forage. The current annual twig growth of browse species was harvested from twelve large plots. Six of the major plots were located within a block 288 feet wide and 396 feet long and the other six were located within a block of the same size. A major plot was six feet wide and forty-eight feet long and was divided in such a way that it contained six one by eight foot subplots, six two by eight foot subplots, and six three by eight foot subplots. The forage weights were separated by species and comparisons made with a density estimate method of determining relative abundance. Browse between the ground level and a height of six feet was harvested but the first one foot level was collected separately. To study winter use of browse 128 utilization transects were distributed in both the Douglas fir and arborvitae zones. A transect consisted of a line, fifty feet in length, along which browse plants were tagged and measured. The current annual twig growth was measured in inches before the winter browsing season began. Plants were re measured the following spring to determine the amount of browsing. The crown intercept of browse species was recorded for each transect to the nearest one-tenth of one foot. Snow trailing was employed as a check against the twig measurement method of utilization determination. Deer trails were followed in the snow and counts were made of freshly browsed twigs.
Document Type:
Thesis
Library Call Number:
QL737.U55M75
Subjects:
browse deer Flat Creek browse utilization winter browse silviculture
UIEF Unit:
Flat Creek
Location:
UIEF; Flat Creek
Latitude:
46.851013
Longitude:
-116.724478
Department:
Department of Forest Resources
Type:
text
Format:
application/pdf

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Preferred Citation:
"Sampling Yields and Utilization of Browse on Winter Deer Ranges in Northern Idaho", UIEF Research Exchange, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/uief/items/uief_0055.html
Rights
Rights:
In copyright, educational use permitted.
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http://rightsstatements.org/vocab/InC-EDU/1.0/
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