Showing papers by "Peter S. White published in 2019"

A theory of pulse dynamics and disturbance in ecology.

Abstract: We propose four postulates as the minimum set of logical propositions necessary for a theory of pulse dynamics and disturbance in ecosystems: (1) resource dynamics characterizes the magnitude, rate, and duration of resource change caused by pulse events, including the continuing changes in resources that are the result of abiotic and biotic processes; (2) energy flux characterizes the energy flow that controls the variation in the rates of resource assimilation across ecosystems; (3) patch dynamics characterizes the distribution of resource patches over space and time, and the resulting patterns of biotic diversity, ecosystem structure, and cross-scale feedbacks of pulses processes; and (4) biotic trait diversity characterizes the evolutionary responses to pulse dynamics and, in turn, the way trait diversity affects ecosystem dynamics during and after pulse events. We apply the four postulates to an important class of pulse events, biomass-altering disturbances, and derive seven generalizations that predict disturbance magnitude, resource trajectory, rate of resource change, disturbance probability, biotic trait diversification at evolutionary scales, biotic diversity at ecological scales, and functional resilience. Ultimately, theory must define the variable combinations that result in dynamic stability, comprising resistance, recovery, and adaptation.

Progress in vegetation science: Trends over the past three decades and new horizons

Abstract: With the current issue, the Journal of Vegetation Science (JVS) enters its 30th year. Founded by Eddy van der Maarel, Robert Peet and Robert Neuhausl in 1990 as an official journal of the International Association for Vegetation Science, it has always been a popular publication venue for the internationally most significant studies in plant community ecology...