concepts themes in design
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Concepts & Themes in Design
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The 'Prime Directive of Permaculture'
"The only ethical decision is to takeresponsibility for our own existence
and that of our children." - Bill Mollison.
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Life Intervention Principle
In chaos lies unparalleled opportunity forimposing creative order Mollison
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Principle of Cooperation
Species co-exist and create rich, diverse ecosystems.
Individuals adjust their environment so it is more
hospitable to life.
Everything gardens.
It is on rare occasions that a species will act to reducebio-diversity
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Homeostasis
is the property of asystem, either open orclosed, that regulates
its internal environmentand tends to maintain astable, constantcondition.
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The Six Principles of Natural
Systems - Birch
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The Six Principles of NaturalSystems Birch
1. Nothing in nature grows forever
There is a constant cycle of decay and rebirth
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The Six Principles of NaturalSystems Birch
2. Continuation of life depends upon themaintenance of the global bio-geochemicalcycles of essential elements, in particlar carbon,
oxygen, nitrogen, sulphur and phosphorus.
Thus, we need to cycle these and other minor nutrients tostimulate growth, and to keep the atmosphere and waters of
earth unpolluted
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Water Cycle
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Nit C l
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Nitrogen Cycle
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Phosphor Cycle
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Nitrogen - 78%
Oxygen - 21%Argon - 0.9%
CO2 - 0.04%
The rest < 1%
Atmospheric Constitution
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The Six Principles of NaturalSystems Birch
3. The probability of extinction of population ora species is greatest when the density is veryhigh or very low.
Both crowding and too few individuals of a species mayresult in reaching thresholds of extinction.
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The Six Principles of NaturalSystems Birch
4. The chance that species have to survive andreproduce is dependent primarily upon one ortwo factors in the complex web of relations of
the organism to its environment.
If we can determine what these critical factors are, we canexclude, by design, some limiting factors, eg: frost, and
increase others, eg: shelter, nest sites.
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The Six Principles of NaturalSystems Birch
5. Our ability to change the face of the earthincreases at a faster rate than our ability toforsee the consequence of such change.
Hence the folly of destroying life systems for short-termprofit.
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Natural Resource Use - Mollison
Reduce waste, hence pollution;
Thoroughly replace lost minerals;
Do careful energy accounting and
Make a bio-social impact assessment forthe long term effects on society, and actas a buffer to eliminate any negative
impacts
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