00:01
Here we're looking at the difference between exponential growth curves and logistic growth curves.
00:07
In an exponential growth curve, we see the stereotypical j -shaped curve because this species is reaching its biotic potential.
00:16
Low mortality, high offspring per mother, and so we see that typical j -shaped curve that over time, the population is increasing exponentially.
00:28
And we typically see this carried out in our selected species, things like plants, like weeds that grow really, really quickly.
00:45
Whereas larger, more slow -growing organisms typically exhibit logistic growth, where they may increase slightly exponentially over time, but because of limited resources and slow growth, they'll level off at a certain peak called the carrying capacity.
01:06
And that gives us an s -shaped curve known as logistic growth.
01:18
Okay.
01:19
So they're limited by carrying capacity.
01:23
I have an s -shaped curve.
01:25
And this is typical of k -selected species.
01:31
So looking at the options available, exponential growth expressed as doubling time...