Blog Post 4: Sampling Strategies

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% error of area densities for systematic, random and haphazard sampling types in the Synder-Middlesworth Natural Area:

Systematic common species % error:

Eastern Hemlock: 20% error

Sweet Birch: 9.8% error

Systematic rare species % error:

Striped Maple: 18.9%

White Pine: 48.8%

Random common species % error:

Eastern Hemlock: 31.7%

Sweet Birch: 14.9%

Random rare species % error:

Striped Maple: 281.1%

White Pine: 50%

Haphazard common species % error:

Eastern Hemlock: 43.9%

Sweet Birch: 53.2%

Haphazard rare species % error:

Striped Maple: 151.4%

White Pine: 100%

The systematic sampling had the lowest sample time with 12hrs 4mins. It was also the most accurate for both common and rare species. Next was random sampling that would take approximately 12hrs 53mins. The slowest and least accurate was the haphazard sampling method at 13hrs 11mins. The results overall seemed to be more accurate throughout all three sampling techniques in the more abundant species such as Eastern Hemlock and Sweet Birch. As well, the overall most accurate sampling method appears to be the systematic method.

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