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 inverse proportion to the square of its distance from the test individual. A simple monospecific version of this model was tested on populations of two annual knotweeds. A least—squares fit of the model accounted for over 80\% of the 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, which has been widely applied to monocultures.
%0 Journal Article
%1 weiner1982neighborhood
%A Weiner, Jacob
%D 1982
%J Ecology
%K competition_kernel knotweeds spatial_ecology
%N 5
%P 1237-1241
%R https://doi.org/10.2307/1938849
%T A Neighborhood Model of Annual-Plant Interference
%U https://esajournals.onlinelibrary.wiley.com/doi/abs/10.2307/1938849
%V 63
%X 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 inverse proportion to the square of its distance from the test individual. A simple monospecific version of this model was tested on populations of two annual knotweeds. A least—squares fit of the model accounted for over 80\% of the 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, which has been widely applied to monocultures.
@article{weiner1982neighborhood,
abstract = {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 inverse proportion to the square of its distance from the test individual. A simple monospecific version of this model was tested on populations of two annual knotweeds. A least—squares fit of the model accounted for over 80\% of the 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, which has been widely applied to monocultures.},
added-at = {2023-12-30T00:57:38.000+0100},
author = {Weiner, Jacob},
biburl = {https://www.bibsonomy.org/bibtex/21452dbabae813c39b82688f79d8b311c/peter.ralph},
doi = {https://doi.org/10.2307/1938849},
eprint = {https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.2307/1938849},
interhash = {7a344514e4ce5a857f771e334bf1218a},
intrahash = {1452dbabae813c39b82688f79d8b311c},
journal = {Ecology},
keywords = {competition_kernel knotweeds spatial_ecology},
number = 5,
pages = {1237-1241},
timestamp = {2023-12-30T00:57:38.000+0100},
title = {A Neighborhood Model of Annual-Plant Interference},
url = {https://esajournals.onlinelibrary.wiley.com/doi/abs/10.2307/1938849},
volume = 63,
year = 1982
}