#systemsdynamics
K-selected species have slower reproduction & longer generation times, their responses to changes in population size are delayed, which creates lower-amplitude, slower oscillations in their populations.
they are selected for by evolution regarding resource use, hence K-selected.
humans like other big mammals once were a K-selected species, even when elon musk is flying around with his jet having 3 million kids - we still are.
#overshoot
#systemsthinking
#systemsdynamics
@systemsthinking
#systemsdynamics-wise there are 2 different types of species:
r-selected species like insects or small mammals have rapid reproduction & short generation times, so they respond quickly to environmental changes. they produce many offspring, so they face overshooting K often, leading to high-amplitude, rapid oscillations in their population stocks, especially when delayed responses are present.
for the sake of simplicity here is some jargon from biology that is used in the population dynamics context all the time:
the amount of possible individuals available resources of a certain environment can sustain is called carrying capacity or K.
the, temporary or not, uptick in population in the fluctuation caused by delayed balancing feedbacks is called #overshoot.
and because the economy has the same feedback structures as populations of living beings they behave the same way. in general it can be said that systems with the same or similar structures also behave similarly. so we can now look at a systems behavior over time, the measurements it's stocks, from that draw conclusions to it's internal structure and explore the dynamics of know systems to understand things about unknown systems.
so here is the things with these systems and dominance of feedbacks: they change in between their states all the time. these changes happen when the dominance of their feedbacks changes. with the population example it could be that food becomes more available which causes a spike in population and the reinforcing loop becoming dominant or a disease decimating a population leading to a decline when the balancing loop becomes dominant.
we have a self-reinforcing feedback on the one side, more individuals being born, flowing into the population stock again leading to more births.
we have a balancing feedback on the other hand side, individuals dying.
another important type of system is two flows/feedbacks working on one stock, but one of the feedbacks is balancing and the other one is reinforcing the flow. every species that lives in a environment obeys these dynamics, humans, animals, plants, plants bacteria and even our economy behave like that.
let's do some
S Y S T E M S
D Y N A M I C S
stock & flow diagram: classic examples & archetypes
we know systems consist of 4 components: stocks, flows, feedbacks & delays
how do these work together to produce systems behavior re-occurring in nature?
a 