Fig. 1. Causal loop representation of farm model. Connections with a + sign denote direct effects (as A goes up, B goes up) whereas connections with a – sign denote inverse effects (as A goes up, B goes down). Processes exogenous to the farm system are shaded gray. The dashed lines for the intensity and diversity processes indicate that although there may not exist a simple + or – causal relationship among these processes with resilience, there does exist some threshold resilience or capacity below which these strategies are not available, for example, where farmers are unable to invest in additional seed or inputs with which to diversify or intensify their crops. Fig. 1