dear Dr. Zahajska:

Thank you for submitting to Biogeosciences and your detailed response to the comments received. The referees are favorable towards publication of a revised mansucript and I agree. I therefore invite you to submit a revised version incorporating the changes you have proposed.

With best regards, Jack Middelburg, Associate Editor

Dear Dr.  Zahajská

Thank you for submitting your revised paper to Biogeosciences. I have read it with pleasure and I am happy to inform you that your paper is now accepted for publication in Biogeosciences, pending a few technical corrections.
• All through, you use SiO2 in the form of mg SiO2 l-1 or mg SiO2 y-1 or mg SiO2 cm-2 y-1, etc. Please communicate to the reader whether you mean mg SiO2 or mg Si. This is not clear from the manuscript. Perhaps explain it, because many colleagues use mg Si or mole Si rather than mg SiO2 as unit. Avoid confusion.
• Similarly, l. 318: you mention C/N. Communicate that these are wt% ratios not molar.

With best regards, Jack Middelburg, Associate Editor