Open AccessDispersal Distances for Airborne Spores Based on Deposition Rates and Stochastic Modeling
Author(s) -
Anders Stockmarr,
Viggo Andreasen,
Hanne Østergård
Publication year - 2007
Publication title -
phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.264
H-Index - 131
eISSN - 1943-7684
pISSN - 0031-949X
DOI - 10.1094/phyto-97-10-1325
Subject(s) - spore , biological dispersal , deposition (geology) , context (archaeology) , diffusion , exponential growth , biology , particle deposition , atmospheric sciences , soil science , mathematics , botany , physics , environmental science , mathematical analysis , thermodynamics , paleontology , population , demography , sediment , sociology
A new modeling framework for particle dispersal is explored in the context of the particles being fungal spores dispersed within a field. The model gives rise to both exponentially decreasing and polynomially decreasing two-dimensional densities of deposited fungal spores. We reformulate the model in terms of time to deposition, and show how this concept is equivalent to the deposition rate for fungal spores. Special cases where parameter values for wind and gravitation lead to exponentially or polynomially decreasing densities are discussed, and formulas for one- and two-dimensional densities of deposited spores are given explicitly in terms of parameters for diffusion, wind, gravitation, and spore release height.