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Model Development
Online Appendices
Model Development
Overview of Model Operation
Discretization of Estuary to Represent Environment, Habitat and Facilitate Crab Movement
Generating the Environment Variables
Random Field Generation
Temperature
Bottom Water Salinity
Bottom Water Dissolved Oxygen
Models for Clams and Background Prey
Clam Growth Dynamics
Clam Mortality
Clam Recruitment
Background Prey
Individual-Based Crab Model
Crab State Variables
Algorithm: Random Crab Updating
Algorithm: Interaction and Aggression Outcomes between Crabs
Algorithm: Movement
Crab Energy Balance: Overview
Energy Balance: Foraging and Finding Clams or Background Prey
Energy Balance: Ingestion
Energy Balance: Egestion
Energy Balance: Respiration and Excretion
Energy Balance: Movement
Energy Balance: Molting
Energy Balance: Egg Production and Spawning
Rules: Larval Development and Recruitment
Rules: Sources of Mortality
Scaling of the Estuary
Model Assessment
Overview of Assessment Methodology
Environmental Variables
Temperature and Salinity
DO
Clams and Background Prey
Clams - Growth, Spawning, Density and Biomass
Sensitivity of Clam and Background Prey to Hypoxia under Predation
Crabs
Growth & Molting
Spawning and Recruitment
Movement
Density and Distribution
Mortality - Aggression & Starvation
Sensitivity of Crab-Crab Interactions
Sensitivity of Crab Dynamics to Clam Model Assumptions
Altering Clam Growth Rates, Size at Maturity, and Spawning Times
Altering Clam Densities
Altering Clam Recruitment in Shallow Waters
Altering All Clam Factors Together
Model Parameters and Additional Results
List of Figures
List of Tables
Bibliography
About this document ...
Craig Aumann 2006-02-12
