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Protocol Test - Biometry
Task with Student Directions

GLOBE Assessment
Grade K-4

Biometry Protocol Test

The Biometry protocol test assesses students' ability to take accurate measurements of canopy and ground cover, as well as determine dominant and co-dominant vegetation .

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Biometry Protocol Test




Student activity & Level of Performance

+ appropriate student performance

- inappropriate student performance

n.a. not appropriate or not observed

Quantitative Land Cover - Canopy                                  
Hold densiometer vertically with metal nut/washer directly below the intersection of the crosshairs                                  
Look directly up at canopy; record vegetation that touches the crosshairs (+, -, Sky)                                  
Record canopy type (Evergreen / Deciduous)                                  
Describe, sketch, or identify tree species                                  
Continue for each pace along diagonal of study site                                  
Quantitative Land Cover - Ground Cover                                  
Look down; record vegetation (Green, Brown, -)                                  
Identify as graminoid (GD), forb (FB), other (OG)                                  
Continue for each pace along diagonal of study site                                  
Determine Dominant / Co-Dominant Vegetation                                  
Fill out summary tables                                  
Determine dominant land cover (tree, herb)                                  
Identify dominant & co-dominant species appropriate for MUC coding                                  


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