A neighborhood model of annual-plant interference.

TY - JOUR

T1 - A neighborhood model of annual-plant interference.

AU - Weiner, J.

PY - 1982/1/1

Y1 - 1982/1/1

N2 - 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

AB - 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

UR - http://www.scopus.com/inward/record.url?scp=0020459107&partnerID=8YFLogxK

U2 - 10.2307/1938849

DO - 10.2307/1938849

M3 - Journal article

AN - SCOPUS:0020459107

SN - 0012-9658

VL - 63

SP - 1237

EP - 1241

JO - Ecology

JF - Ecology

IS - 5

ER -