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A 100mx100m grid was set using an engineers level and measuring tape. 18" long sections of 1/2" PVC pipe were labeled with the corresponding vertex number and pounded into the ground 10 m apart to create the grid.
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All stems with a diameter at breast height (approximately 1.37m) of 1.0 cm or greater were tagged. Tags were placed on the eastern side of the trees approximately 10cm below breast height (1.27m). Trees that were previously tagged with long tags as part of DIRT research or the Forest Ecology class (2005) were retagged and the old tag numbers were noted. Trees that were previously tagged with round tags were simply re-recorded. Most tags number between 1555 and 3228. Stems were considered unique if branching occured anywhere below breast height. Species , status, canopy position, and comments pertaining to the individual trees were also recorded (see notes below).
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Tree location was determined by recording the angle and distance of the center of the base of each stem from the center of a 20m x 20m section. A coordinate system transformation was then performed to give each stem a location in a cartesian coordinate system. The 0,100 location corresponds to the most southwestern corner of the quarter.
Primary tabs
FASET and DIRT Stem Census
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Methods:
Additional Information
Field | Value |
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mimetype | text/csv |
filesize | 1.47 MB |
resource type | file upload |
timestamp | Sep 01, 2021 |