Is removal of biological material a concern with the big ocean cleanup projects?

Being a reef aquarium fan I have come to learn how important biologic material can be to the overall ecosystem. Watching videos of the huge hauls of trash I can’t miss the volume of plant matter that is also captured.

Here’s the question: has there been any studies on the impact of removing biological material along with plastic and other waste and the potential impact that might have?

I’ve read through some general information and it never mentions efforts to return natural plant sheddings, which many species rely on as a food source.