User: | Open Learning Faculty Member:
For the virtual tree sampling tutorial, I selected Mohn Mill. The three sampling strategies used were the Area haphazard method, the distance-haphazard method and the distance random/systematic method. The distance-haphazard method had the fastest sampling time.
The two most common species were Eastern Hemlock and Sweet Birch, and the two rarest species were the Stripped maple and White pine.
The haphazard area method had the lowest percentage error, while the haphazard distance error had the highest percentage error when used to measure the most common species.
For the rare species, the distance random/systematic method had the lowest percentage error, but no Stripped maple trees were located. The haphazard method had the highest percentage error.
The accuracy appeared to be decreasing with a decrease in species abundance for the haphazard methods. However, for the distance random/systematic method, the accuracy increased with decreasing species abundance.
Instructor: Robyn Reudink
