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Eutrophication Management PAMOLARE2 - Shallow Lakes - model,Dec 2005Eutrophication Management PAMOLARE2 - Shallow Lakes - model,Dec 2005

The PAMOLARE2 model uses structurally dynamic principles for the management of eutrophication in shallow lakes. This model complements the first version of PAMOLARE launched by IETC and ILEC in 2002, which included a series of models for eutrophication management but did not address the interactions between algae, macrophites and fish.

 

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Pamolare

PAMOLARE 2- Eutrophication Management - Shallow Lakes

Pamolare - coverEutrophication of freshwater bodies is a main environmental concern. indicators of eutrophication can include the following: accumlation of algal scum and toxins from algal blooms, infestations of species of aquatic plants, increased turbidity, incidence of water-related diseases, noxious odors, depletion of dissolved oxygen, and tainted fish and fish kills. Structurally dynamic model (SDM) is one type of models that simulates the eutrophication process and related species responses.

In the SDM model parameters are constantly changed to reflect the adaptations and the shifts in species composition in the water body. Exergy, the distance from the thermodynamic equilibrium in the species (considered as a measure of survival), is the most widely used measure for the fitness of species to the changed conditions in the development of this model.

What is the value of this model?

PAMOLARE II is an SDM model that focuses on Shallow Lakes for advance eutrophication lake management. It can also be used for restoration purposes or it can be adapted to wetland conditions. PAMOLARE II also considers species competition (macrophytes and phytoplankton) and interactions between macrophytes and macrophytes-feeding fish (cyprinid carps).
Due to its complexity the model requires a large number of data, therefore when proper data is not available the user may chose to use other models provided in PAMOLARE I Training Package.

The PAMOLARE 2 model uses structurally dynamic principles for the management of eutrophication in shallow lakes. This model complements the first version of PAMOLARE launched by IETC and ILEC in 2002, which included a series of models for eutrophication management but lacked the capability to foresee the interactions between algae, macrophytes and fish.

Shallow lakes differ from other similar water bodies due to the fact that wind has a large impact affecting the entire water column (amongst other characteristics). Sediments are thus continuously stirred resulting in constant nutrient mixing, the water column mostly keeps oxygenated and the thermocline is constantly broken, or does not exist at all. Anthropogenic nutrients such as agriculture and disposal of urban wastewater have an even greater impact in shallow lakes because they are vulnerable to eutrophication, which results in alterations in biodiversity and succession of algae, macrphytes and zooplankton. Likewise, eutrophication produces anaerobic conditions, large variations in productivity and water quality.

Download Pamolare2

PAMOLARE 2 (ZIP 6.4MB)

System Requirements - Supported Operating Systems:Windows 95, Windows 98, Windows 2000, Windows XP

PAMOLARE

Today, more and more freshwater bodies have become polluted by nutrients originated from agricultural, domestic and industrial sources. This situation causes them to become eutrophied presenting in general algal growth resulting in severe changes of water quality and the ecology. Often times very active toxins (cyanotoxins) for animals and mankind can also be produced by some algae. In an effort to prevent unwanted eutrophication, significant financial resources have been invested in expensive infrastructure and equipment, yet the situation is worsening therefore a number of complementary alternatives should be considered. IETC started to look at the problem and provide solutions in a comprehensive manner producing in 1999 the book Planning and Management of Lakes and Reservoirs: An Integrated Approach to Eutrophication (UNEP-IETC; Tech. Pub. Series 11).

Continuing with the effort to assist decision makers and interested institutions, agencies and professionals in managing eutrophication in lakes and reservoirs in developing countries and countries with economies in transition a number of numerical models for PCs have been jointly developed. This effort was jointly undertaken with the International Lake Environment Committee Foundation (ILEC) and Kyoto University in Japan. The models have been presented in the present Training Package entitled PAMOLARE.

The PAMOLARE acronym comes from the title Planning and Management of Lakes and Reservoirs focusing on Eutrophication. This package is a tool that also allows for a better understanding of eutrophication processes including its origins and effects and complements the above-mentioned publication and its abridged version.

For those who are not familiar with modeling this package also contains Training and a Help menu to assist the user in understanding its basics. Furthermore, the multiple choice test and lake concept sub-menus under training are also recommendable functions of this package to find out your basic knowledge on limnology.

Four models are available in the package and their selection for use must be based upon the availability of data of a given freshwater body. The models are: 1) Vollenweider plot, 2) 4st-model (a 1-layer lake model with 4 state variables plus several additional parameters), 3) 2L-Model (a medium complex 2-layer model) and 4) the Structurally dynamic 2L-Model (a medium complex 2-layer model using exergy to model the structural dynamics of phyto and zooplankton).

UNEP-IETC and ILEC have also produced a number of publications related to the Management of Lakes and Reservoirs as well as for the watershed. For further information the user should visit their respective homepages at: www.unep.org/ietc and www.ilec.or.jp

International Lake Environment Committee Foundation (ILEC)
1091 Oroshimo-cho, Kusatsu City, Shiga 525-0001 Japan
Tel: +(81-77) 568-4567 Fax: +(81-77) 568-4568 Email: info@ilec.or.jp

Download Pamolare

Pamolare (ZIP 3.3MB)

System Requirements - Supported Operating Systems:Windows 95, Windows 98, Windows 2000, Windows XP