The Variable Retention Windthrow Monitoring project has been ongoing for four years, the first two years as a pilot study. The first year of the project included the eastern portion of Weyerhaeuser?s West Island Timberlands in south central Vancouver Island and the Queen Charlotte Island Timberlands. The second year focused on the Klanawa and Walbran watersheds in West Island Timberlands, Port McNeill Timberlands and North Island Timberlands. In the third year the study expanded to include the Sprout Lake portion of West Island Timberlands, South Island Timberlands and Stillwater Timberlands. New plots were also established in North Island Timberlands and the Queen Charlotte Islands. The fourth year of the study saw the establishment of 377 new plots in variable retention harvest units at North Island Timberlands, Port McNeill Timberlands and Stillwater Timberlands. Re-sampling took place on the majority of the pilot study sites that had experienced less than two winter wind seasons at the time of the initial sampling.
Rollerson, T.P., Beese, W.J. (Bill); Smith, Nick J.; Peters, Charles M.. 2005. Variable Retention Windthrow Monitoring Project - 2001 to 2005 progress report. Forest Investment Account (FIA) - Forest Science Program. Forest Investment Account Report. FIA2005MR009