Group SelectionThe Board of Forestry also rejected the JAG's recommendations for restricting research and demonstration in the Matrix to ensure that silviculture at variance with Matrix guidelines would only occur pursuant to a peer-reviewed research plan.
Group selection will be implemented on approximately 80% to 85% of the THP area. Less than 20% of the group selection harvest area (excluding WLPZ’s) will be made up of gap openings at any one time.. The average group opening is expected to be 1.5 to 2.0 acres, with larger group openings up to 2.5 acres in areas where topographic and/or logging operational constraints exist. Primary considerations for establishing logical group opening locations (and size) will include planning for future groups and choosing areas where conifers are expected to maintain site occupancy. With the exception of corridor trees, harvesting between groups is not proposed. Following the creation of groups , redwood seedlings will be planted at a 10-12 foot spacing.
Hardwood control measures will be implemented within groups to reduce competition with naturally regenerating and planted conifer seedlings. A proportion of groups will include either “hack and squirt” of standing hardwoods, implemented during the pre-harvest on standing hardwoods, or mechanical cutting of hardwood sprouts from harvested hardwood stems/seedlings sometime post-harvest (2-3 years). Pre-harvest “Hack and squirt” applications will allow time for foliage decay, thus releasing nutrients and increasing sunlight to the forest floor in time for scheduled tree planting. Post harvest mechanical treatments will allow manual control of regenerating hardwood, thus reducing competition.
I would hope that others would weigh in on this. I’d like to get a sense about how everybody is feeling in terms of Cal Fire staff’s interpretations of the BOF direction. It seems to me, that the Director should consider the Board’s actions and then consider the work of the JAG, and perhaps give further direction to the staff in terms of implementation and what in terms of studying the options they need to do to look at the economics and ecological effects of variances from what we had asked them to consider. I do feel that because we were never able to get to the next step in understanding the numerical implications of our recommendations that THIS is what the JDSF timber harvest program should be focused on at this point.
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Overall, conifer stocking is poor. Isolated pockets of both poor and moderately stocked conifers were observed throughout
the sale area. Stem counts are moderate is some areas, yet diameters are generally small, with few trees exceeding 30
inches DBH. Tanoak is relatively abundant throughout the sale area. Much of the area is composed of dense tanoak
canopies, and a significant factor in maintaining conifer growth rates and site occupancy.
In our silvicultural guidelines we clearly made an exception for such stand:
In stands historically dominated by conifers, and where previous management or fire
occurrence has resulted in hardwood-dominated stands, exceptions may be made to the
standard Matrix Silviculture Guidelines. Exceptions must be approved by the JAG upon
recommendation of the Forest Manager.
----- Original Message -----From: Jani, MikeTo: Vince Taylor ; Mike Anderson ; Dan Porter ; Brad Valentine ; JAG Group ; Mike Liquori ; Jere Melo ; John A. Helms ; Kathy Bailey ; linda perkins ; Forest Tilley
Sent: Sunday, August 07, 2011 12:04 PM
Thanks for pointing that out Linwood