DISCLAIMER: I also made a post about it in biology stack exchange but I'm not sure whether that forum is the most appropriate. Hence I thought to share my question here as well.
While looking at this paper, I came across with the following:
Examples of reaction-diffusion systems (1)-(2), falling into the class of systems we are interested in, are for instance the Brusselator, the Schnakenberg, the Gray-Scott and the Gierer-Meinhardt model coupled to a conservation law coming for instance from ecology.
Although I googled a lot, I couldn't find any example/reference from ecology which satisfies the above. Having a motivation can help someone gain easier intuition on the expected results, which is really important.
Question: What are some examples of reaction-diffusion systems, coupled to a conservation law, coming from biology? I'm looking for a rather simple reference or examples from daily life (if any).
Any help will be much appreciated. Thanks in advance!