B08_Attachments.docx

EXAMPLE MARKING PRESCRIPTION

Treatment

Mark leave trees based on the following:

· Leave trees shall be marked in yellow paint.

· In this unit, only live Douglas-fir and white fir greater than 7.9 inches dbh shall be marked for retention (leave). Hardwoods, smaller conifers, other conifer species and snags will be retained through restrictions on cutting in the timber sale contract.

· Selection of trees to be marked for retention shall be based on stump diameter. Stump diameter is defined as the outside bark diameter of a tree measured four (4) inches above the ground on the uphill side of the tree. (Stump diameter is to be used for measurement and tree selection and is not to be confused with felling stump heights.)

· From a starting point within the unit, select the Douglas-fir or white fir with the largest stump diameter within a sixteen (16) foot slope distance radius and mark it to retain. (All Douglas-fir and white fir within sixteen feet slope distance, which have smaller stump diameters, will be removed through a timber sale.)

· Beyond the sixteen foot (16’) slope distance spacing from the selected leave tree, mark to leave the next closest conifer with the largest stump distance that is within sixteen feet (16’) slope distance. Repeat the spacing mark. Where conifers greater than 7.9” dbh are present, do not exceed thirty-two feet (32’) slope distance from another conifer leave tree. This requirement may result in smaller trees being marked.

· For purposes of marking this unit, subtract two inches (2”) from the stump diameter of white fir trees when deciding which trees to retain.

· For trees with two stems, the diameter at stump height shall determine whether the tree is a take or a leave tree.

· Unit boundary trees, previously orange marked trees and cedar may be included in the spacing IF they would be selected for leave based on stump diameter.

· Do not include hardwoods in the spacing.

Table 1. Square Feet Basal Area per Acre by Diameter class

*QMD = QUADRATIC MEAN DIAMETER

Table 2 - Spacing for Regeneration Harvest

85’ x 85’ 79’ x 79’ 74’ x 74’ 70’ x 70’ 66’ x 66’ 63’ x 63’ 60’ x 60’ 57’ x 57’ 55’ x 55’ 54’ x 54’ 52’ x 52’ 50’ x 50’ 49’ x 49’ 48’ x 48’ 47’ x 47’ 45’ x 45’ 44’ x 44’ 43’ x 43’ 43’ x 43’ 42’ x 42’

Table 3 - Physical Characteristics of Snags by Deterioration Stage

Limbs and branches all present, pointed tree top, tight bark, recently dead

Few limbs, no fine branches, pointed or broken tree top, variable level of bark remaining

Limb stubs only, decay in upper bole, some decay at base of bole, variable level of bark remaining

Few or no stubs, no fine branches, broken top, loose or minimal bark

No limbs or branches, no sapwood present, broken top, 20% or less of bark remaining

Table 4 - Coarse Woody Debris Decay Classes

Trees designated for coarse woody debris should have characteristics of decay class 1 and 2 (e.g., bark intact, limbs intact, texture mostly sound, round shape). To meet the ROD/RMP guidelines, leave a minimum of 120 linear feet of logs per acre greater than or equal to 16 inches in diameter and 16 feet long (120 linear feet is equivalent to 7.5, 16 foot logs) (Information Bulletin OR-97-064 and Instruction Memorandum OR-95-028).

Form 1

Example Tally Card (Form Will Vary by District)

Unit #:

Name Date

.. 2

Form 2 – PI Plot Card

No. of trees to be marked

Deficient Tree Selection (c) Deficient Marking Comments

Error Rate = (b) + (c) / Sum of (a) x 100 Example: (1 + 2)/36 = 0.083 x 100 = 8.3 Error rate Work Quality Percent = 100% - Error rate Example: 100% - 8.3 = 91.7% = 92%