Dear authors:
I have now received two reviewers comments on your manuscript. As you can see from their comments, both reviewers acknowledge the high quality of the work. At the same time, however, both reviewers make a number of minor suggestions to further improve the manuscript. I think, these alterations can be incorporated quite easily into the revised version of the paper. Please send along with the thoroughly revised paper a statement indicating point-by-point how you addressed the reviewers' comments.
Please let me have your revised manuscript at your earliest convenience.
Best wishes, Gerhard Herndl

Dear authors:
I have now gone through the revised version of your manuscript. I found that essentially all the reviewer's comments are addressed satisfactorily. Thus, I appreciate being able to inform you that the paper is now accepted for publication in Biogeosciences.
Thanks for choosing Biogeosciences as an outlet of your interesting research.
Best wishes, Gerhard Herndl