"This is a turbidity tube for measuring the turbidity, and the citizen scientists they fill the tube with water until the pattern on the bottom is not longer visible and then they are able to read the level of the turbidity using the scale on the tube. This is a citizen science monitoring approach, the objective being to involve the community in matters related to monitoring." – Naomi Njue (CIFOR Intern and PhD Student, Justus Liebig Universitat, Giessen).
Photo by Patrick Sheperd/CIFOR
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