| hilbertLogan_83 {devRate} | R Documentation |
Holling type III equation of development rate as a function of temperature.
Description
Hilbert, DW, y JA Logan (1983) Empirical model of nymphal development for the migratory grasshopper, Melanoplus sanguinipes (Orthoptera: Acrididae). Environmental Entomology 12(1): 1-5.
Usage
hilbertLogan_83
Format
A list of eight elements describing the equation.
- eq
The equation (formula object).
- eqAlt
The equation (string).
- name
The name of the equation.
- ref
The equation reference.
- refShort
The equation reference shortened.
- startVal
The parameters found in the literature with their references.
- com
An optional comment about the equation use.
- id
An id to identify the equation.
Details
Equation:
rT = phi * ((\frac{(T-Tb)^{2}}{(T-Tb)^{2} + aa^{2}}) - e^{-\frac{Tmax - (T-Tb)}{deltaT}})
where rT is the development rate, T the temperature, Tb the minimum temperature for development, deltaT the width of high temperature boundary area, Tmax the maximum temperature, and aa a constant.