Vernier Software and Technology - Celebrating 35 years
Vernier Software & Technology
Innovative Uses

Forestry Survey using a Vernier GPS

Sam Swartley and Marian Griffiths planting a tree

In late October 2005, employees from Vernier participated in a tree planting event in conjunction with the organization Friends of Trees. We planted 200 trees in the wetlands area surrounding nearby Beaverton Creek. Below is a table that shows the quantities of each type of tree that was planted, along with some general notes and estimated survival rates.

Qty Species Common Name Estimated Survival Rate Notes
40 Alnus rubra Red Alder 50% fast growing
60 Fraxinas latifolia Oregon Ash 80% tough as nails
70 Populous trichocarpa Cottonwood 80% fast growing
10 Quercus garryana Oregon Oak 60% slow growing
10 Psuedotsuga mensiezii Douglas Fir 60% medium growth
10 Thuja plicata Western Red Cedar 30-60%  

Beaverton Creek Tree Google Map

As part of the 2009 Earth Day activities, David Vernier and Jim McBride checked on the trees. They used a LabQuest and our Vernier GPS Sensor to note the position and type of each surviving tree. The map above shows the locations of the surviving trees. It was made by using Logger Pro to export these locations to a Googleâ„¢ map.

The first graph below compares the number that survived with the number planted. The second graph compares the survival percentages to the expected survival rate.

Beaverton Creek Tree Population

Beaverton Creek Tree Survival Percentages

Download the Logger Pro data file »

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