00:01
Ecological succession is essentially the change in the numbers and distribution of species in an area over a timeline.
00:10
And this phenomenon is seen really rapidly right after a natural disaster or some kind of catastrophic event in an ecosystem, like a fire, for example, in a forest.
00:20
So i'm illustrating this example to help us see this a little bit easier since this is happening super rapidly right after this fire.
00:28
So the fire happens and then i illustrated a timeline in months after the fire.
00:33
So 2, 6, 12, 24, 48 months after the fire.
00:38
We're going to look at which species are present in these time periods.
00:43
And then we're going to think about the theme of natural selection and how natural selection chooses, depending on what species are present, how it chooses which ones stay and which ones go and when they come at one time.
00:55
So right after the fire in the first couple of months, we're going to see.
00:59
Some early colonizers.
01:01
So this is just the forest floor.
01:03
We're thinking small species.
01:06
I'm going to illustrate some grasses and some shrubs...