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Maximizing Baseline Development: Understanding Options for Sampling in Ecosystems

Explore different sampling methodologies for pre-harvest and post-harvest data collection, from one-to-one to one-to-many approaches. Learn about using available data and cooperation with licensees for cost-effective baseline development. Follow Nancy and Alanya’s Data Search Odyssey, including the use of BCTS cruise data and existing research reports. Understand the importance of large tree retention and the distribution of wildlife tree patches. Stay informed on the evolving strategies for baseline development in forestry research.

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Maximizing Baseline Development: Understanding Options for Sampling in Ecosystems

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  1. Baseline DevelopmentWhat’s it all mean anyway? Alanya Smith & Nancy Densmore

  2. What are our Options? • one – to – one • Pre-harvest and post-harvest sampling of same block • one – to – many • Post-harvest sampling placed in the spectrum of available data from the same ecosystem SBS dw

  3. “Premium” one-to-one baseline • Pre-harvest data from the same stands – using the same methodology • cooperation with licensees to find unharvested but planned blocks • 2 sampling sessions on each block (double the cost?) We can dream…

  4. “Premium” one-to-many baseline • Pre-harvest data from blocks that fit the population description – same sampling methodology • 180 harvested zone/subzone X 30 blocks X $3,000 = $16,200,000 $ $ So, Peter….. $ We can dream…

  5. Cheaper one-to-one:cruise data same block • BCTS cruise data • good for standing trees (no record of CWD on block) • difficult to track down BCTS electronic cruise plot data. …An odyssey soon to be made into a full length feature drama….

  6. Nancy and Alanya’s Data Search Odyssey • BCTS Official notices system (2005) • First approach made to CanFor • Contractor hired • BCTS Official notices system (2006) • GENUS

  7. Cheaper one-to-many lumped cruise data Success at last… • Use available electronic cruise plot data from the BCTS ONS • 2005 final report – example comparison of SBS sampled cutblocks to 51 BCTS cruise blocks.

  8. Existing Research • Available research data - but its not necessarily from the same population, collected the same way or with same quality rigour (FREP Report 1: Baseline Datasets for Evaluating Wildlife Tree Patches, November 2004) • Deadtree database for CWD

  9. Even distribution of large tree retention

  10. Skewed distribution – emphasis on retaining large trees

  11. 2005 Report: Abundance of large trees found in sampled cutblocks compared to the baseline (SBS)

  12. Summary • Approx 270 plots of baseline • Testing required - Alyson McHugh testing the one-to-one “premium” in the Arrow district • Fire & MPB

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