Journal Article Research Support, Non-U.S. Gov't Acacia Dichrostachys cinerea Macrotermitinae Soil Termitoidae abundance alien species ants biological invasions bush encroachment climate change global change impacts international co-operation intrinsic species traits introduction pathways invasive distributions litterbags naphthalene niche shift nutrient cycle pathways of introduction proactive response capacity range shifts soil fauna species distribution models thermoregulation traits