This video, we're going to talk about density independent factors and how they limit population growth. Density independent factors, as their name implies with the term independent, have limiting effects on population growth that are completely independent of population density. Unlike density dependent factors, changing the population density here is not going to change the effect that these density independent factors have on limiting the population's growth. These density independent factors are often random ecological events that are random with respect to population density, and usually, they are abiotic in nature, meaning that they're associated with nonliving things, such as natural disasters like hurricanes, floods, and fires. The big takeaway here is that these density independent factors limit population growth equally, regardless of the population density.
In a graph like this one on the right side, where we have population density on the x-axis and mortality rate on the y-axis, for density independent factors, we might expect this graph to look something like this: just a straight horizontal line. Regardless of what the population density is, the impact on the population's growth limitation is going to be equal. This here concludes our lesson on density independent factors, and moving forward, we'll be able to apply these concepts and problems. So I'll see you all there.