Simple mass balance model for lakes, based on the Vollenweider equation:

dMw/dt = Min - sMw - Mout

The model was first used in the 1960s to determine the phosphorus concentration in lakes and reservoirs, for eutrophication assessment.

Environment Eutrophication Lakes And Reservoirs

Fertilizer inflow can cause lake eutrophication. In this simulation, we are studying what happens in a simple lake ecosystem.

Environment Eutrophication

This is an introductory conceptual model that introduces key concepts in the management of lakes subject to nutrient inputs from human activity.

Lake Eutrophication Simple

Simple mass balance model for lakes, based on the Vollenweider equation:

dMw/dt = Min - sMw - Mout

The model was first used in the 1960s to determine the phosphorus concentration in lakes and reservoirs for eutrophication assessment.

This version adds diagenesis, using an extra state variable (phosphorus in the sediment) and incorporates desorption processes that release phosphorus trapped in the sediment back to the water column.

The temporal dynamics of the model simulate the typical development of pollution in time.

1. Low loading, low P concentration in lake
2. High loading, increasing P concentration in lake
3. Desorption rate is low, P in sediment increases
4. Measures implemented for source control, loading reduces
5. P in lake gradually decreases, but below a certain point, desorption increases, and lake P concentration does not improve
6. Recovery only occurs when the secondary load in the sediment is strongly reduced.

Environment Eutrophication Lakes And Reservoirs

This diagram provides an accessible description of the key processes that guide the water quality within a lake.

Environment Lake Management Algae Eutrophication

This is an introductory model that presents key concepts in the management of lakes subject to nutrient inputs from human activity.

Lake Eutrophication Simple

This diagram describes the key processes that influence the water quality within a Northland lake.

Environment Lake Management Algae Eutrophication

Simple mass balance model for lakes, based on the Vollenweider equation:

dMw/dt = Min - sMw - Mout

The model was first used in the 1960s to determine the phosphorus concentration in lakes and reservoirs, for eutrophication assessment.
This version uses nitrogen and adds phytoplankton growth based on a Michaelis-Menten equation

Environment Eutrophication Lakes And Reservoirs

This stock and flow diagram provides a broad description of the key nutrient pathways (N and P) that exist in a dune-lake system subject to external loadings emanating from intensive agriculture.

Environment Eutrophication Lake Nutrients

This diagram provides a stylised description of important feedbacks within a shallow-lake system.

Environment Lakes Eutrophication Turbidity

Clone pannirbrof Biogas to Energy | Insight Maker https://insightmaker.com/insight/114792/Clone-pannirbrof-Biogas-to-Energy Simple mass balance model for lakes, based on the Vollenweider equation:

dMw/dt = Min - sMw - Mout

The model was first used in the 1960s to determine the phosphorus concentration in lakes and reservoirs, for eutrophication assessment.


Ecocity model , Joanna 
http://www.divaportal.se/smash/get/diva2:631144/FULLTEXT01.pdf

Environment Eutrophication Lakes And Reservoirs

Based on Houghton/Higgins Lake

Environment Eutrophication

This diagram provides an accessible description of the key processes that influence the water quality within a lake.

Environment Lake Management Algae Eutrophication

This diagram provides an accessible description of the key processes that influence the water quality within a lake.

Environment Lake Management Algae Eutrophication

This diagram provides a stylised description of important feedbacks within a shallow-lake system.

Environment Lakes Eutrophication Turbidity

Models ecosystem dynamic of eutrophication.

Geog 166 Eutrophication Chesapeake Phytoplankton Final

Simple mass balance model for lakes, based on the Vollenweider equation:

dMw/dt = Min - sMw - Mout

The model was first used in the 1960s to determine the phosphorus concentration in lakes and reservoirs, for eutrophication assessment.

Environment Eutrophication Lakes And Reservoirs

Simple mass balance model for lakes, based on the Vollenweider equation:

dMw/dt = Min - sMw - Mout

The model was first used in the 1960s to determine the phosphorus concentration in lakes and reservoirs, for eutrophication assessment.

Environment Eutrophication Lakes And Reservoirs

This diagram provides a stylised description of important feedbacks within a shallow-lake system.Mahinga Kai

Environment Lakes Eutrophication Turbidity

Simple mass balance model for lakes, based on the Vollenweider equation:

dMw/dt = Min - sMw - Mout

The model was first used in the 1960s to determine the phosphorus concentration in lakes and reservoirs, for eutrophication assessment.

Environment Eutrophication Lakes And Reservoirs

Fertilizer inflow can cause lake eutrophication. In this simulation, we are studying what happens in a simple lake ecosystem.

Environment Eutrophication

Fertilizer inflow can cause lake eutrophication. In this simulation, we are studying what happens in a simple lake ecosystem.

Environment Eutrophication

Fertilizer inflow can cause lake eutrophication. In this simulation, we are studying what happens in a simple lake ecosystem.

Environment Eutrophication

Simple mass balance model for lakes, based on the Vollenweider equation:

dMw/dt = Min - sMw - Mout

The model was first used in the 1960s to determine the phosphorus concentration in lakes and reservoirs, for eutrophication assessment.

Environment Eutrophication Lakes And Reservoirs