Burrowing animals reshape semi-arid landscapes, impacting soil and vegetation
Animals like rabbits, echidnas, goannas, ants, and termites disturb soil in different ways in a semi-arid Australian woodland. The researchers looked at how these animals affect the soil at different scales, from small patches to entire vegetation communities. They found that rabbit warrens were more common in open woodlands and shrublands than in dense woodlands. More soil was moved in grasslands than in dense woodlands or shrublands. Under tree canopies, there were more foraging pits and resting sites than in open areas. Echidnas and kangaroos were the main culprits in these areas. Overall, the amount of soil disturbed by all species was similar across different vegetation types. Ant nests and termite galleries were found at similar densities across all scales. The study shows that the impact of animals on soil depends on the scale at which you look at it.