MayflowerIris_Attachment_5_RXBiomass.docx

Attachment 5

Prescription for trees between 3’ tall and 3” dbh:

All Units

· Cut all undesirable ponderosa pine between 3’ tall and 3” dbh

· Thin desirable ponderosa pine between 3’ tall and 3” dbh to 10 x 10 foot spacing ± 5 feet to select the most desirable tree. Space off all residual trees.

Mayflower Units Only

· Cut all white fir between 3’ tall and 3” dbh

Definitions:

Desirable Leave Tree Characteristics (see also “Undesirable Leave Tree Characteristics”): Trees considered desirable as leave trees have most or all of the following characteristics:

(a) Straight stem (leaning <15 degrees from vertical axis)

(b) Well-formed crown (wide, full, symmetrical)

(c) Live, single top with vigorous annual terminal growth

(d) Free of animal, insect or disease damage and/or symptoms, including dwarf mistletoe

(e) Absence of physical or mechanical damage

(f) No portion of crown growing underneath or intertwined with the crown of a residual tree Undesirable Leave Tree Characteristics: Trees considered undesirable as leave trees have one or more of the following characteristics:

(a) Leaning or bent (>15 degrees from vertical axis; often related to prolonged suppression)

(b) Crook, sweep, or fork in bole

(c) Poor crown form (one-sided, narrow, or sparse)

(d) Multiple, dead, or broken tops

(e) Presence of insects, diseases, or animal damage, including any visible evidence of dwarf mistletoe (i.e, fruiting bodies)

(f) Any physical or mechanical damage

(g) Any portion of crown growing underneath or intertwined with the crown of a residual tree

Examples of Desirable Trees 3’ tall to 3” dbh

Examples of Undesirable Trees 3’ tall to 3” dbh

Poor crown form (narrow, sparse) Under the crown of residual tree Bent stem, sparse crown, bark missing image6.jpeg image1.jpeg image2.jpeg image3.jpeg image4.jpeg image5.jpeg