Dear Authors,

The two references confirm the quality of the investigations carried out in order to understand the impact of the vegetation change induced by global warming on the dynamics of peat organic matter. They also raise a series of questions about the sites or approaches for which you provide specific answers.

Therefore, I invite you to submit a corrected version of your paper. I ask you to integrate the modifications and to reread carefully this new version because I decided not to send the manuscript back to the referees. However, I will check whether the new manuscript fits with the standard of BG.

Best regards,

Sébastien Fontaine

Dear authors,

I appreciate your efforts to respond in details to referee's comments and suggestions. I am convinced by most of your changes. Nevertheless, I am going to send your ms to one of former referees for a final check.

Regards,

Sébastien Fontaine

Dear Authors,

The status of your article has been changed (from major to minor corrections) to correct a mistake from a side. Given that the referee's comments were overall positive and you modified your manuscript accordingly, I think it is not necessary to disturb the referees.

Please submit the corrected version of your manuscript after a carefull re-reading from your side. I will read this last version for a final polish.

Best regards,

Sébastien

Dear Authors,

I went through your new manuscript and response to referee's comments. Your modifications improved much your manuscript, but I detect some important issues in the introduction section. This section is completely desorganized with a first paragraph made of 33 lines! A paragraph shoud ideally comprise between 10 to 15 lines. The objectives of paragraphs are not clearly separated. For example, the last paragraph that should insert the objectives of the study starts with the presentation of the py-GC/MS method. Another example is the definition of peat that arrives in the middle of your introduction though the subject is discussed from the first line. The writting of your introduction must be structured in paragraphs with clearly-identified messages.
Regards,

Sébastien

Hello,

I read your introduction and found your structure clearer. Nevertheless, the place of the peat definition is not relevant. It should appear either at the beginning of the introduction or the material & methods section. The definition of the peat decomposition could also appear in the material & methods section.

L67: The stable isotopes are often used for what purpose? Need to be clarified.

Regards,

Sébastien

Hello,

the transfer of these définitions in the material & methods section are welcome. However, the modified sentence above these définitions has ne more sense. Could you please ask to supervisors or co-author senior scientists to re-read your manuscript?

Regards

Sébastien