I have reviewed your responses to the generally positive referee comments and I'm satisfied that your have addressed most of the issues. However, there are a few places where the quality of writing is not sufficient for publication in ACP. I recommend that you ask a native English speaker to edit your paper. ACP does not have a detailed copy editing procedure, but instead relies on authors to ensure the quality of their papers. I particularly encourage you to revisit the new paragraph starting on line 17 of p15. I found this particularly hard to understand. E.g., what is "inhibition/dispersion"? The final sentence from line 29 seems to be quite disconnected from the previous text. Overall, it's not very clear to the reader that these fragmentation mechanisms are not well established yet, so this could be made a bit clearer.