Girdling Trees for Snags & Down Wood
(Activity: CWD Creation)
Project #003 - Girdling Trees to Create Snags
This conservation project requires services for removing bark and cambium from trees (girdling) at various locations on the Clackamas River Ranger District of the Mt. Hood National Forest in Clackamas County, Oregon. This girdling is meant to kill the tree and create a wildlife snag in the short term and DWD within ten years.
Trees to be girdled are in partially harvested young plantations or in un-harvested riparian reserves. This project work will be done within the boundaries of the units of the K9 Thin timber sale or in the un-treated riparian reserves directly adjacent to the units. The boundaries of these units will be designated with blue timber harvest signs, orange tree tags and white paint.
Target Tree Details
|
Unit |
Acres | Trees To be girdled in tagged unit (except within 25ft of a yellow or orange marked tree) | Trees to be girdled in skips (within 25 feet of an orange marked tree* | Trees to be girdled in no-cut riparian areas outside of tagged unit | Average spacing in thinned portion of stand (except within 25 ft. of yellow or orange marked tree) | Average spacing within skips | Average spacing within no-cut Riparian Areas | Target DBH* Range and Species |
| 4 |
13.5 |
30 |
10 |
0 |
127 |
220 |
N/A |
DF Only |
|
16-20” |
||||||||
| 6 |
9 |
45 |
0 |
0 |
93 |
N/A |
N/A |
Df Only |
|
16-20” |
||||||||
| 8 |
38.5 |
90 |
25 |
0 |
122 |
231 |
N/A |
DF Only |
|
16-20” |
||||||||
| 10 |
8.5 |
0 |
0 |
20 |
N/A |
N/A |
81 |
DF Only |
|
16-20” |
||||||||
| 12 |
24 |
33 |
15 |
0 |
159 |
236 |
N/A |
DF Only |
|
10-15” |
||||||||
| 14 |
71 |
0 |
40 |
15 |
N/A |
243 |
396 |
WH & DF Only |
|
16-20” |
||||||||
| 16 |
18 |
39 |
15 |
0 |
129 |
209 |
N/A |
DF Only |
|
19-24” |
||||||||
| 20 |
16 |
21 |
10 |
20 |
164 |
238 |
168 |
DF Only |
|
19-24” |
||||||||
| 22 |
10 |
22 |
4 |
6 |
126 |
295 |
241 |
DF Only |
|
16-20” |
||||||||
| 24 |
5.5 |
17 |
5 |
0 |
107 |
198 |
N/A |
WH Only |
|
16-20” |
||||||||
| 30 |
6 |
18 |
5 |
0 |
108 |
205 |
N/A |
WH & DF Only |
|
16-20” |
||||||||
| 34 |
23 |
34 |
10 |
0 |
153 |
154 |
N/A |
DF Only |
|
16-20” |
||||||||
| 38 |
29 |
69 |
5 |
10 |
133 |
493 |
125 |
DF Only |
|
19-24” |
||||||||
| 42 |
52 |
103 |
10 |
25 |
137 |
99 |
277 |
DF & WH Only |
|
16-20” |
||||||||
| 56 |
29 |
49 |
10 |
25 |
193 |
133 |
208 |
DF and WH |
|
16-20” |
||||||||
Totals |
359 | 570 | 164 | 121 |
*Due to safety issues or natural variation in stand sizes, there may be instances where girdling would need to occur above or below this range. Trees chosen for girdling should be representative of the largest DBH’s of the stand, excluding residual old-growth.
** Do not place all treated trees in one skip. Scatter them throughout all of the skips present in the unit.