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Determinants and patterns of population growth in water hyacinth
Wilson, J.R.; Holst, N.; Rees, M. (2005). Determinants and patterns of population growth in water hyacinth. Aquat. Bot. 81(1): 51-67.
In: Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam. ISSN 0304-3770, more
Peer reviewed article  

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    Aquatic weed control; Aquatic weeds; Eichhornia; Growth rate; Hyacinthus; Numerical models; Nutrients (mineral); Population characteristics; Temperature; Weed control; Weed control; Weed control; Eichhornia crassipes (Mart.) Solms [WoRMS]; Marine
Author keywords
    water hyacinth; Eichhornia crassipes; logistic growth; weed populationdynamics

Authors  Top 
  • Wilson, J.R.
  • Holst, N.
  • Rees, M.

    Mathematical models of the growth of water hyacinth are developed to provide a sound basis for assessing existing and potential control options. We show that under constant experimental conditions, water hyacinth shows logistic growth (r2 of 0.69-1.00). The effects of nutrients and temperature on model parameters are explored using data from the literature. The model is verified against growth in a natural infestation. The resulting model incorporates two of the most important factors (temperature and water nutrient level) that determine whether water hyacinth is an important environmental problem at a given site. These relationships form a robust basis for further model development, and can be readily used to evaluate how the plant will respond to changes in nutrient inputs.

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