z-logo
Premium
A Neighborhood Model of Annual‐Plant Interference
Author(s) -
Weiner Jacob
Publication year - 1982
Publication title -
ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.144
H-Index - 294
eISSN - 1939-9170
pISSN - 0012-9658
DOI - 10.2307/1938849
Subject(s) - competition (biology) , monoculture , ecology , mathematics , inverse , population , production (economics) , annual plant , statistics , biology , demography , geometry , economics , macroeconomics , sociology
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.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here