DENSIOMETERS
type: Concept
change note: 2021-08-04 18:11:44.0 [sritz] insert AltLabel (id: null category: primary text: DENSIOMETERS language code: en);
in scheme: instruments
definition: A densiometer is used to determine amount of canopy closure. In other words, you are deciding how much of the sky above you is blocked by trees. When looking into a densiometer there is a mirror image of what is above you (it works like a periscope on a submarine). To use a densiometer correctly it must be held level. When looking into the densiometer you can see the trees above you. If more than 50% of the view is covered by branches, leaves, or limbs the canopy is closed. If less than 50% of the view is covered by branches, leaves, or limbs the canopy is open. Additional information available at "http://www.uwsp.edu/cnr/cwes/forestree/Toolbox/densiometer.htm" [Summary provided by the University of Wisconsin]

Photon/Optical Detectors
type: Concept