Content deleted Content added
Citation bot (talk | contribs) Alter: page. Formatted dashes. | You can use this bot yourself. Report bugs here. | Activated by Amigao | Category:Systems theory | via #UCB_Category |
mNo edit summary |
||
Line 67:
A [[positive feedback]] loop speeds up a process. Meadows indicates that in most cases, it is preferable to slow down a positive loop, rather than speeding up a negative one.
{{quote|The [[eutrophication]] of a lake is a typical feedback loop that goes wild. In a eutrophic lake (which means well-nourished),
An increase of [[nutrient]]s will lead to an increase of productivity, growth of [[phytoplankton]] first, using up as much nutrients as possible, followed by growth of [[zooplankton]], feeding up on the first ones, and increase of fish populations. The more available nutrients there are, the more productivity is increased. As plankton organisms die, they fall to the bottom of the lake, where their matter is degraded by decomposers.
| |||