Blog Post 4: Sampling Strategies

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The technique with the fastest sampling time was the random sampling method. The Red Maple and the Eastern Hemlock were the two most common species and the Striped Maple and White Pine were the two rarest. The percentage error for these with the different sampling techniques are as follows;

 

  Systematic Random Subjective
Eastern Hemlock 11.5% 21.7% 10.8%
Red Maple 4.1% 13.4% 30%
Striped Maple ?? 347% 42.9%
White Pine 47.5% ?? ??

?? denotes the PE was unable to be calculated because the species was not found in sampling.

 

The accuracy of the sampling appeared to increase with increased species abundance. The rare species had much higher PE values than the common species and some were unable to be calculated at all because the species was not found using certain sampling techniques.  The Random and Systematic sampling techniques were on average about 4-5% more accurate than the Subjective/Haphazard method of sampling for common species. However, when calculating rare species the Systematic and Haphazard method were much more accurate than the Random method, but due to the lack of species abundance and data it is difficult to read too much into this.

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