MASTEP: An Individual-Based Model to Predict Recovery of Aquatic Invertebrates Following Pesticide Stress

Introduction ..............................................................................................................48 Materials and Methods ............................................................................................. 49

Purpose ........................................................................................................... 49 State Variables and Scales ............................................................................... 49 Process Overview and Scheduling .................................................................. 49 Design Concepts .............................................................................................50 Initialization .................................................................................................... 51 Input ............................................................................................................ 51 Submodels ....................................................................................................... 51

Life Cycle ........................................................................................... 51 Reproduction ....................................................................................... 51 Mortality ............................................................................................. 51 Density Dependence ........................................................................... 51 Dispersal and Movement .................................................................... 51 Pesticide Mortality .............................................................................. 52

Scenarios ......................................................................................................... 52 Landscape ........................................................................................... 52 Exposure ............................................................................................. 52

Results ...................................................................................................................... 52 Discussion ................................................................................................................54