Research interests: Basic and applied aspects of restoration ecology to restore the functionality of and mitigate impacts to forest and rangeland wildlife habitats following disturbance.

Research interests: spatial and temporal patterns of selection in plant populations using techniques in field ecology, molecular genetics and bioinformatics, adaptation of plant populations to local environments, and the implications of local adaptation for the restoration of native plant communities.

Research interests: ecosystem biodiversity, ecological and anthropogenic processes and how they constrain species distributions, functional connectivity and how it limits population persistence, landscape change and impact of alternative future landscape conditions on ecosystem sustainability.

Research interests: Interactions and impacts of herbivores on rangeland ecosystems and relationships of ecological condition and forage production for domestic livestock, wildlife habitat attributes, insects and invasive plant species

Research interests: plant-environment interactions in terrestrial environments of the world with particular focus on savannas, grasslands and deserts, potential responses of water-limited ecosystems to changes in climate, atmospheric chemistry and vegetation composition.