A neighborhood model of annual-plant interference.

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A model is constructed in which seed production by individual annual plants within a population is a function of the number and species of individuals within each of several concentric neighborhoods. The effect of increasing competition is to reduce seed production in a hyperbolic fashion, and the contribution of each individual to this effect is in inverse proportion to the square of its distance from the test individual. A simple monospecific version of this model was tested on populations of 2 annual knotweeds. A least-squares fit accounted for >80% of variation in seed production. This model provides an alternative to density in describing plant populations. A monospecific aggregated version can be seen as an extension of the inverse-yield law.-from Author

Udgave nummer5
Sider (fra-til)1237-1241
Antal sider5
StatusUdgivet - 1 jan. 1982

ID: 224654228