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Fig. 2 | SpringerPlus

Fig. 2

From: Citizen surveillance for environmental monitoring: combining the efforts of citizen science and crowdsourcing in a quantitative data framework

Fig. 2

Schematic representation of the citizen surveillance framework. The different types of citizen surveillance are distinguished within a two-dimensional system representing the detection process and the reporting process. Examples of well known data sources for the different types are represented in green. The blue circles represent the number of publications for each type in our literature review database

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