March 25, 2024 Collins, S. L., J. B. Nippert, J. M. Blair, J. M. Briggs, P. Blackmore and Z. Ratajczak. 2021. Fire frequency, state change and hysteresis in tallgrass prairie. Ecology Letters 24(4):636-647. Home » Collins, S. L., J. B. Nippert, J. M. Blair, J. M. Briggs, P. Blackmore and Z. Ratajczak. 2021. Fire frequency, state change and hysteresis in tallgrass prairie. Ecology Letters 24(4):636-647.