The importance of landscape composition for pest control and crop yield: A global quantitative synthesis

Using a global structural equation model of 116 studies from 28 countries,
we tested three hypotheses: The ‘natural enemy hypothesis’, that natural
areas increase natural enemies and suppress pests; the ‘resource
concentration hypothesis’, that simplified agriculture increases pests;
 and the ‘agronomic quality hypothesis’ with a structural
equation model. This repository contains the dataset and R script for the
analysis that examines how landscape composition directly and indirectly
affects crop yield, mediated through natural enemies, biological control,
and pests, across multiple studies using a structural equation model.