Details of local dispersion improve the fit of neighborhood competition models

Joy Bergelson

Research output: Contribution to journalArticlepeer-review


I performed a series of greenhouse experiments to explore how patterns in the dispersion of local competitors affect the reproductive performance of Capsella bursa-pastoris, Poa annua and Senecio vulgaris. I manipulated the density and relative frequency of competitors in each of three concentric rings surrounding a central plant, thereby creating a variety patterns by which local competitors were distributed. Neighborhood competition models were used to predict the seed output of these central plants. For both Senecio vulgaris and Capsella bursa-pastoris, I found that models which incorporated the dispersion of competitors, as well as the relative emergence date of plants, performed substantially better than those that considered only the distance between the central plant and each of its competitors. I was unable to measure the seed output of Poa annua but neither emergence data nor the dispersion of competitors were important in determining its final dry-weight.

Original languageEnglish (US)
Pages (from-to)299-302
Number of pages4
Issue number2
StatePublished - Aug 1993


  • Competition
  • Microsite
  • Neighborhood
  • Seed production
  • Spatial pattern

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics


Dive into the research topics of 'Details of local dispersion improve the fit of neighborhood competition models'. Together they form a unique fingerprint.

Cite this