Individual-based modeling of fish: Linking to physical models and water quality.
The individual-based modeling approach for the simulating fish population and community dynamics is gaining popularity. Individual-based modeling has been used in many other fields, such as forest succession and astronomy. The popularity of the individual-based approach is partly a result of the lack of success of the more aggregate modeling approaches traditionally used for simulating fish population and community dynamics. Also, recent recognition that it is often the atypical individual that survives has fostered interest in the individual-based approach. Two general types of individual-based models are distribution and configuration. Distribution models follow the probability distributions of individual characteristics, such as length and age. Configuration models explicitly simulate each individual; the sum over individuals being the population. DeAngelis et al (1992) showed that, when distribution and configuration models were formulated from the same common pool of information, both approaches generated similar predictions. The distribution approach was more compact and general, while the configuration approach was more flexible. Simple biological changes, such as making growth rate dependent on previous days growth rates, were easy to implement in the configuration version but prevented simple analytical solution of the distribution version.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- Electric Power Research Inst., Palo Alto, CA (United States)
- DOE Contract Number:
- AC05-96OR22464
- OSTI ID:
- 634025
- Report Number(s):
- CONF-9707113-1; ESD-4692; ON: DE97009379; CNN: Contract RP2932-2; TRN: AHC2DT01%%35
- Resource Relation:
- Conference: Conference on ecosystem modeling at Army Corp of Engineers sites, Morrilton, AR (United States), 1-3 Jul 1997; Other Information: PBD: Aug 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Potential effects of maternal contribution on egg and larva population dynamics of striped bass: Integrated individual-based model and directed field sampling
An individual-based instream flow model for coexisting populations of brown and rainbow trout