Abstract
Spatial patterns in heterogeneity are generally deemed a central causal factor influencing the physiology and behavior of animals in ecological systems. However, knowledge remains limited about how such patterns influence food discovery by animals. We inferred that spatial heterogeneity plays a key role in animal food discovery and location. To prove this inference, we tested food locating parameters by 2 rodent species, Apodemus agrarius and Lasiopodomys brandtii, in different heterogeneous environments. Our results showed that spatial heterogeneity significantly influenced the food locating time of rodents, with food locating time increasing with increasing spatial heterogeneity. Furthermore, spatial heterogeneity significantly influenced invalid excavations (digging in the wrong place). Finally, spatial heterogeneity significantly influenced the frequency that heterogeneous objects were explored. Supporting our inference, our results indicate that spatial heterogeneity significantly influences the foraging behavior of animals. Consequently, increased spatial heterogeneity will impair the food locating success of rodents. We believe that this work will broaden our understanding of plant-animal interactions.
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