Blog Post 4: Sampling Strategies

 

Species

Density % Error

Systematic (Area)

Random (Area)

Haphazard (Area)

Red Maple

19.49%

0.92

17.66

White Oak

11.81

4.97

17.45

White Pine

35.16

35.16

62.50

Downy juneberry

16.16

110.10

68.69

 

  • The data resulting from the virtual forest tutorial showed that the most efficient sampling method was the systematic method at an estimated 12 hours, 5 minutes. The least efficient method was the random method, at 12 hours 44 minutes.
  • The two most common species were the Red Maple and the White Oak, with frequencies ranging from 43 to 92%. The two most rare species were White Pine and Downy juneberry with frequencies ranging from 9 to 12%.
  • The accuracy was much higher with greater species abundance. This is shown in the comparison in percent error between common and rare species in the table above. 
  • The systematic sampling method was most accurate with the rare species, and the random sampling method was most accurate with the common species.
  • I think that 24 sampling points was sufficient to capture the major species in the area, but not to accurately determine the frequencies, in turn affecting the percent error. More sampling points would decrease the percent error and more accurately represent the species in the study area.

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