Terrestrial ecosystem, dynamics and diversity of soil biota of arid, semiarid and agroecosystems.
Belowground processes in with emphasis on relationship of soil invertebrates and detrital food web structure to primary production monitoring rangeland conditions (health)
Assessing success of rehabilitation efforts on disturbed rangelands, such as improvement of primary production, reverse desertification processes and rehabilitation of coal strip mines
Biological management of soil ecosystems for sustainable agriculture, decomposition processes, climate change effect on biotic component of soil biota. In the belowground processes the emphasis on soil microbial community (bacteria, fungi), free-living nematodes, protozoa, microarthropods and plant organism relationships.