| Title: | Density-dependent chemical interference--an extension of the biological response model |
| Address: | "University of Turku, Satakunta Environmental Research Center, Department of Biology, Pori, Finland. aki.sinkkonen@utu.fi" |
| ISSN/ISBN: | 0098-0331 (Print) 0098-0331 (Linking) |
| Abstract: | "The response of plants to many phytochemicals changes from stimulatory to inhibitory as the concentration of the phytochemical increases. In this paper, a previous biological response model is extended to yield estimates of plant responses to changes in phytochemical concentrations in the case of density-dependent phytotoxicity. This requires a knowledge of plant densities, phytochemical concentrations in soil, and the relationship between the two. According to this model extension, inhibition is a probable outcome in density-dependent chemical interference, but phytotoxic effects may become stimulatory as plant density increases. In addition, low phytochemical concentrations in soil may cause an increase in the slope of the biomass-density relationship compared to the slope of control treatments. Experimental data from the literature support this model extension, and in several cases density-dependent chemical interference can be estimated mathematically" |
| Keywords: | "Adaptation, Physiological Animals Biomass Dose-Response Relationship, Drug *Insecta *Models, Biological *Pheromones *Plants Population Dynamics Predatory Behavior;" |
| Notes: | "MedlineSinkkonen, A eng Research Support, Non-U.S. Gov't 2001/08/16 J Chem Ecol. 2001 Jul; 27(7):1513-23. doi: 10.1023/a:1010329612753" |
