The uncoupling of disturbance and recruitment, two kinds of seed bank, and persistence of plant populations at the regional and local scales

In natural and semi-natural vegetation there is a spectrum of cases from those in which episodes of recruitment are tightly coupled with disturbance-events to those in which they are completely uncoupled. The dichotomy between these extremes leads to the recognition of two basically different types of seed bank. Nine means of persistence at the regional scale are spelt out, and aspects of temporal change in spatial distribution at the local scale are discussed. Finally emphasis is placed on the importance of recognizing the dichotomy between coupled and uncoupled recruitment when pursuing a quantitative understanding of population control in plants.

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