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Umbrellas and flagships: Efficient conservation surrogates or expensive mistakes?

Self-disturbance as a source of spatiotemporal heterogeneity: The case of the tallgrass prairie

Tallgrass prairies are characterized by high levels of litter production, which has a profound effect on live biomass. Litter introduces a delayed inhibition of biomass growth, generating nonlinear dynamics and chaos. In this paper, we study a model of biomass–litter interaction, and focus on the litter persistence rate. The observed dynamics depends largely on this rate of year-to-year persistence. Different scenarios are explored and discussed. A spatially extended counterpart of such a model is later on introduced to account for the effects of space.

Recruitment variability and populations dynamics

Dr. Timothy Keitt Annual Report

Report of the Fourth Workshop

Using scientific uncertainty to shape forest policy

Two-dimensional analysis for characterizing multi-scale species range data

Uncertainty as information: Narrowing the science-policy gap

Ecosystem management and the challenge of scientific uncertainty

Using uncertainty to shape environmental policy