An earlier monitoring study comparing regeneration growth in clearcuts, with regen associated with variable retention silviculture systems and regen found old-growth gaps in the CWH Vh1, Vm1 and Vm2 BEC variants (in the Arrowsmith TSA) was conducted in 2002 (FII project number R02-144). While a preliminary analysis of the field data produced some interesting results, a full analysis and final report was never completed. We propose to utilize the existing data from this report to assess the effects of VR silviculture treatments on regen growth that we believe would be of value to share with those interested in the effects of VR on regen growth pertaining to TSRs. This project will contribute to sustainable forest management by providing a detailed statistical analysis of the existing data on regeneration growth under different harvesting treatments in comparison with old-growth forests (currently there is very little data on regeneration growth under variable retention treatments in comparison with traditional clear-cuts and old-growth forest gaps). This is an essential question to answer in order to ensure we are successfully regenerating the next stand, as well as providing for wildlife habitat and other values associated with variable retention systems.
from Warren Warttig.
Warttig, Warren. 2007. Regen under Variable Retention(VR) - EBM. Forest Investment Account (FIA) - Land Base Investment Program - Innovative. Forest Investment Account Report