Parkside Gully Tolerant Hardwood Selection - 130-501

Description: The Parkside Gully Tolerant Hardwood Selection Harvesting and Product Recovery Study (hereafter referred to as the Parkside Gully Study) was established in 1966 and is one of the longest running and largest size controlled-harvest hardwood studies known in Ontario. In this proposed project we will remeasure all permanent sample plots, carry out the next scheduled operational harvest of the study stands, and complete a full product recovery study to relate the final wood products.

The objectives of the Parkside Gully Study are:

1.      To compare individual-tree growth rates and stem quality development in uncut control plots and plots harvested using 12-year stand re-entry single-tree selection, and to compare the most recent 1992-2005 growth and productivity rates to the previous growth intervals 1966-1992 as a test of the sustainability of this particular silvicultural intensification;

2.      To calculate the quantity, quality and economic values of final products generated from this harvest by carrying out a mill-run product recovery study and to relate them back to pre-harvest tree quality assessment;

3.      To attempt to correlate periodic mean annual increment from the 3-4 inter-harvest growth intervals and with uncut control plot data with regional climate data to try to detect effects of climate change on long-term growth patterns;

And to assess two IFM impacts indicators under single-tree selection:

4.      To compare the downed coarse wood pool sizes between uncut control plots and plots harvested 4-5 times since 1966;

5.      To compare the understory plant species composition of uncut control plots and plots harvested 4-5 times since 1966.

The present study will add significantly to the quality and quantity of the data set, and therefore the confidence that we have in the results. In so doing, we will have the ability to compare our average tree growth rates from 3-4 replicated treatments (time-series) to the available local and regional climate data available to try to detect growth correlations with known climate change trends (temperature, precipitation). This test, if successful, would be a significant advancement in our empirical evidence for climate change impacts on forest growth and productivity, and might suggest that compensatory action be taken by interested forest management companies and agencies. In addition, this remeasurement will add an additional 25% to the active yield curve data set by the end of this project which will be provided to the Benchmark Growth and Yield project team for incorporation into their database. Since much of the Ontario growth and yield data is from unmanaged stands, data such as these from carefully managed hardwood stands are disproportionately valuable.

This study will indirectly benefit the forest-based industry and communities in the area of the undertaking by providing reliable science-based silviculture results that will clearly show the positive impacts on growth and product quality and quantity of using an IFM system versus the extensive system represented by our uncut control sites. The study site will be used to demonstrate the positive silvicultural and economic benefits of careful intensive single-tree selection management, while also showing the low ecological impacts of the system. Finally, the location of the study site within Algonquin Provincial Park provides the opportunity to work with the park’s interpretive staff to communicate the specific research results as well as the general concepts of collaborative research efforts between provincial government and forest industry that helps to project a positive image of sustainable forest management to the general public, many of whom live, work or have cottage properties within the area of the undertaking.


The Project Team:  Bill Cole, OFRI, Murray Woods, OMNR, Al Stinson, OMNR - FRP




Parkside Gully Tolerant Hardwood Selection Harvest and Product Recovery Study (March 2008)

Parkside Gully Tolerant Hardwood Selection Harvest and Product Recovery Study (April 2008)


Status Reports:

Status Report (2007-2008)

Project Work Report (2007-2008)

Expenditures (2007-2008)

Project Work Report (2008-2009)

Financial Summary (2008-2009)

Final Monitoring Report (2008)


For Additional Information Contact:

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