alexa The Use of the Dynamic Fuzzy Method in Ecosystem Model
ISSN: 2347-7830

Research & Reviews: Journal of Ecology and Environmental Sciences
Open Access

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Research Article

The Use of the Dynamic Fuzzy Method in Ecosystem Modeling

Ralf Wieland1*, Rainer Bruggemann2, Peter Kasprzak3

1Leibniz-Centre for Agricultural Landscape Research, Institute of Landscape Systems Analysis, Eberswalder Str. 84, 15374 Muencheberg, Germany

2Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Mueggelseedamm 310, 12587 Berlin.

3Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Alte Fischerhuette 2, OT Neuglobsow 16775 Stechlin.

*Corresponding Author:
Ralf Wieland
Leibniz-Centre for Agricultural Landscape Research
Institute of Landscape Systems Analysis
Eberswalder Str. 84, 15374 Muencheberg, Germany
Email: psmore. [email protected]
 

Abstract

A concept is rendered to replace the right-hand side of a set of ordinary differential equations with fuzzy models. This modeling approach allows stake- holder/expert knowledge to be included in the model development, leading to a white box approach and high credibility of models. An additional effect is that models are simple and stable. The system behavior can be controlled flexibly by fuzzy models; a number of examples are presented in the paper. Stability is investigated using the Lyapunov exponent. The approach is demonstrated using a simple aquatic ecosystem model and supported by open source software, namely the “Spatial Analysis and Modeling Tool” (SAMT), with additional modules written in Python.

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