My day job is selling farm inputs, and making agronomic recommendations to growers.
This is for terrestrial crops, but similar things could be happening.
Very, very interesting stuff.
I've been saying for a long time that plants seem to enjoy a little elbow room between species. And after a good trim and reduction of mass, everything seems happier.
Never really thought of why, have just observed it.
Maybe there is some correlation between your post and our aquatic plants. Great food for thought.