This model shows how a persistent pollutant such as mercury or DDT can be bioamplified along a trophic chain to levels that result in reduction of top predator populations.
Environment Bioamplification Oceanography Pollution
This model shows how a persistent pollutant such as mercury or DDT can be bioamplified along a trophic chain to levels that result in reduction of top predator populations.
Clone of Biomaplification of mercury in a marine system
Marc Eichen
Insight diagram
Environment Prey Ecology Predator
Clone of Predator-Prey Interactions (Wolf & Moose)
Josh Kruhm
Interplay between wolves eating sheep and farmers killing wolves who kill deer that eat crops that feed sheep.
Farming Environment

Interplay between wolves eating sheep and farmers killing wolves who kill deer that eat crops that feed sheep.

Clone of Complex Sheep, Wolves, Deer, Crops
Magnus Persson
Second Draft
Environment Unintended Consequences
Second Draft
Koala Population Dynamic Systems
Ty
Food Web
Environment
Food Web
Mariana Trench Food Web
Jack Tong
FORCED GROWTH GROWTH GOES INTO TURBULENT CHAOTIC DESTRUCTION   BEWARE pushing increased growth blows the system! (governments are trying to push growth on already unstable systems !) The existing global capitalistic growth paradigm is totally flawed The chaotic turbulence is the result of th
Strategy Weather Environment MTBF BIFURCATIONS Growth Economics Finance Mathematics Population Demographics Science Navier Stokes Physics Engineering TURBULENCE Chaos Fractals Biology Health
FORCED GROWTH GROWTH GOES INTO TURBULENT CHAOTIC DESTRUCTION 
 BEWARE pushing increased growth blows the system!
(governments are trying to push growth on already unstable systems !)

The existing global capitalistic growth paradigm is totally flawed

The chaotic turbulence is the result of the concept and flawed strategy of infinite bigness this has been the destructive influence on all empires and now shown up by Feigenbaum numbers and Dunbar numbers for neural netwoirks

See Guy Lakeman Bubble Theory for more details on keeping systems within finite limited size working capacity containers (villages communities)

FORCED GROWTH INTO TURBULENCE
Guy Lakeman
5
A system diagram for the Mojave Desert including example socio-economic factors for an assignment at OSU- RNG 341.
FOOD WEB Desert Mojave Ecosystem Environment
A system diagram for the Mojave Desert including example socio-economic factors for an assignment at OSU- RNG 341.
Mojave Desert System Diagram with SES
Abi Wells
Simple box-model of the global carbon cycle
Carbon Environment Sustainability
Simple box-model of the global carbon cycle
Clone of Global Carbon Cycle
Phil Resor
Tomado de: Modeling forest succession in a northeast deciduous forest. Modificado para Bosque Subtropical
Environment Ecology Succession
Tomado de: Modeling forest succession in a northeast deciduous forest.
Modificado para Bosque Subtropical
Sucesión Forestal
Denny S. Fernandez del Viso
4
THE 2017 MODEL (BY GUY LAKEMAN) EMPHASIZES THE PEAK IN POLLUTION BEING CREATED BY OVERPOPULATION WITH THE CARRYING CAPACITY OF ARABLE LAND NOW BEING 1.5 TIMES OVER A SUSTAINABLE FUTURE (PASSED IN 1990) AND NOW INCREASING IN LOSS OF HUMAN SUSTAINABILITY DUE TO SEA RISE AND EXTREME GLOBAL WATER REL
Drought Transport Silicene Graphene Resource Solar Nuclear Energy Food Agriculture Cyclone Tornado Typhoon Hurricane Loss Flood Animals Plants Fish Sea Ocean Yield Regeneration Pollution Lifetime Rural Industrial Urban Labor Jobs Land Resources Services Health Fertility Politics Economics Strategy Engineering Technology Science Mortality Death Failure Climate Weather Population Population Growth Demographics Environment

THE 2017 MODEL (BY GUY LAKEMAN) EMPHASIZES THE PEAK IN POLLUTION BEING CREATED BY OVERPOPULATION WITH THE CARRYING CAPACITY OF ARABLE LAND NOW BEING 1.5 TIMES OVER A SUSTAINABLE FUTURE (PASSED IN 1990) AND NOW INCREASING IN LOSS OF HUMAN SUSTAINABILITY DUE TO SEA RISE AND EXTREME GLOBAL WATER RELOCATION IN WEATHER CHANGES IN FLOODS AND DROUGHTS AND EXTENDED TROPICAL AND HORSE LATTITUDE CYCLONE ACTIVITY AROUND HADLEY CELLS

THE MODEL IS ZONE SPECIFIC AS GLOBAL WEATHER IS NOT HOMOGENEOUS BUT A COLLECTION OF HEAT BUMBPS DEPENDENT ON POPULATION SIZE OF URBAN HEAT ISLANDS AND MASSED CONURBATIONS AND AGGLOMERATIONS 

The World3 model is a detailed simulation of human population growth from 1900 into the future. It includes many environmental and demographic factors.

THIS MODEL BY GUY LAKEMAN, FROM METRICS OBTAINED USING A MORE COMPREHENSIVE VENSIM SOFTWARE MODEL, SHOWS CURRENT CONDITIONS CREATED BY THE LATEST WEATHER EXTREMES AND LOSS OF ARABLE LAND BY THE  ALBEDO EFECT MELTING THE POLAR CAPS TOGETHER WITH NORTHERN JETSTREAM SHIFT NORTHWARDS, AND A NECESSITY TO ACT BEFORE THERE IS HUGE SUFFERING.
BY SETTING THE NEW ECOLOGICAL POLICIES TO 2015 WE CAN SEE THAT SOME POPULATIONS CAN BE SAVED BUT CITIES WILL SUFFER MOST. 
CURRENT MARKET SATURATION PLATEAU OF SOLID PRODUCTS AND BEHAVIORAL SINK FACTORS ARE ALSO ADDED

Use the sliders to experiment with the initial amount of non-renewable resources to see how these affect the simulation. Does increasing the amount of non-renewable resources (which could occur through the development of better exploration technologies) improve our future? Also, experiment with the start date of a low birth-rate, environmentally focused policy.

2017 Weather & Climate Extreme Loss of Arable Land and Ocean Fertility by Guy Lakeman - The World3+ Model: Forecaster
Guy Lakeman
33
This stock and flow diagram is a working draft of a conceptual model of a dune-lake system in the Northland region of New Zealand.
Environment Lake Nutrient Cycling Management Leaching

This stock and flow diagram is a working draft of a conceptual model of a dune-lake system in the Northland region of New Zealand.

Stock and flow diagram of phosphorus in a shallow lake
Graeme Doole
12
Interplay between wolves eating sheep and farmers killing wolves.
Farming Environment

Interplay between wolves eating sheep and farmers killing wolves.

Simple Sheep and Wolves
Davor Tomasic
Ce modèle est une simulation classique du cycle de productivité dans l'océan, incluant les effets de la thermocline pour désactiver l'advection d'éléments nutritifs dissous et de détritus à la couche superficielle.   Ce modèle illustre un certain nombre de caractéristiques intéressantes notamment
Phytoplankton Ocean Environment Biogeochemistry Primary Production
Ce modèle est une simulation classique du cycle de productivité dans l'océan, incluant les effets de la thermocline pour désactiver l'advection d'éléments nutritifs dissous et de détritus à la couche superficielle.  

Ce modèle illustre un certain nombre de caractéristiques intéressantes notamment le lien de trois variables d'état dans un cycle fermé, l'utilisation du temps pour contrôler la durée de l'advection et la fonction modulus pour les données de température qui cyclent annuellement sur plusieurs années. 

Les variables d'état du modèle sont exprimées en unités d'azote (mg N m-3), et l'étalonnage est basé sur:

Baliño, B.M. 1996. Eutrophication of the North Sea, 1980-1990: An evaluation of anthropogenic nutrient inputs using a 2D phytoplankton production model. Dr. scient. thesis, University of Bergen.
 
Fransz, H.G. & Verhagen, J.H.G. 1985. Modelling Research on the Production Cycle of Phytoplankton in the Southern Bight of the Northn Sea in Relation to Riverborne Nutrient Loads. Netherlands Journal of Sea Research 19 (3/4): 241-250.

Traduction du modèle de Joao G Ferreira (https://insightmaker.com/insight/6838/NPD-model-Nutrients-Phytoplankton-Detritus)
Le modèle NPD (nutriments, phytoplancton, détritus) basé sur la productivité primaire de la Mer du Nord - CHANGEMENT TEMPERATURE 1 DEGRE
Alexia Parhas
This model shows how a persistent pollutant such as mercury or DDT can be bioamplified along a trophic chain to levels that result in reduction of top predator populations.
Environment Bioamplification Oceanography Pollution
This model shows how a persistent pollutant such as mercury or DDT can be bioamplified along a trophic chain to levels that result in reduction of top predator populations.
Clone of Clone of Biomaplification of mercury in a marine system
Morgan Stonge
Examples of flows
Biology Growth Environment
Examples of flows
Bio103 Growth Models
John Petersen
3
Insight diagram
Assignment Environment
Koala Prediction
Paul
Insight diagram
Tree Global Warming Environment
Deforestation
Aude Souvestre
Fooodwaste happens everywhere and in every part of the food cycle even if nobody wants it to happen.  We created a local solution  to reduce the waste. This solution is situated in Belgium (Kotrijk) where an exchange system (for services) already exists and it is called letsleie  http:/
Environment

Fooodwaste happens everywhere and in every part of the food cycle even if nobody wants it to happen. 

We created a local solution to reduce the waste. This solution is situated in Belgium (Kotrijk) where an exchange system (for services) already exists and it is called letsleie http://www.letsleie.be.  We did choose letstlei because their exchange system doesn’t work with money but with a fictive money system "vlasbloemen". In their system we want to integrate the exchange of food leftovers. After some years the system could become world wide. 

Our solution begins with an event in a neighbourhood or apartments. This event brings the neighbours together who don't know each anymore. It explains the existing system and the problems of the food waste. Every person had to take a leftover and chefs will create a delicious meal of it. The members will receive a food box who is biodegradable and contains a QR code that will simplify the food/ service exchange. 

 People will talk to each other after the event and more and more people will join without needing new publicity.

Foodwaste Reducing by exchanging
DESTREBECQ
Z212 from System Zoo 1 p142-148
Physics Health Care Environment

Z212 from System Zoo 1 p142-148

House Heating Dynamics
Geoff McDonnell
3
Primitives for Watershed modeling project. Click Clone Insight at the top right to make a copy that you can edit. The converter in this file contains precipitation for Phoenix only.
Rainwater Water Environment
Primitives for Watershed modeling project. Click Clone Insight at the top right to make a copy that you can edit.

The converter in this file contains precipitation for Phoenix only.
Primitives for Rainwater Harvesting -Phoenix ENVS 270 F21
Rivka Fidel
106
Insight diagram
Prey Environment Ecology Predator
Clone of Predator-Prey Interactions (Wolf & Moose)
Josh Kruhm
A
Predator Ecology Environment Prey
A
Predator-Prey Interactions (Wolf & Moose) QA
Josh Kruhm
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.
Lakes And Reservoirs 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.
Clone of Clone of Vollenweider model
Amanda
In Chile, 60% of its population are exposed to levels of Particulate Matter (PM) above international standards . Air Pollution is causing 4,000 premature deaths per year , including health costs over US$8 billion. The System Dynamics Causal Loop Diagram developed herein shows an initial study o
Air Pollution Heating Environment
In Chile, 60% of its population are exposed to levels of Particulate Matter (PM) above international standards. Air Pollution is causing 4,000 premature deaths per year, including health costs over US$8 billion.

The System Dynamics Causal Loop Diagram developed herein shows an initial study of the dynamics among the variables that influences the accumulation of PM in the air, in particular the case of Temuco, in the South of Chile. In Temuco, 97% of the PM inventories comes from the combustion of low quality firewood, which in turns is being burned due to its low price and cultural habits/tradition.
Clone of Air Pollution Dynamics - Firewood Combustion
David Bonin