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Table 2 Study population, interventions, comparators and outcomes (PICO) relevant to the systematic review question

From: To what extent does the presence of forests and trees contribute to food production in humid and dry forest landscapes?: a systematic review protocol

Population Interventions Comparators Outcomes
Farm (local) and landscape (regional) scale agricultural systems in humid and dry forests. Tree or forest presence. Tree or forest absence Direct and indirect measured effects of tree cover on food production (crop and livestock yield), resource availability and/or competition, utilization and/or conservation