Dear authors:
I have now received two reviewers' comments on your manuscript. As you can see, both reviewers' have severe concerns and criticism on the manuscript. Hence, I ask you to revise the manuscript addressing all the reviewers' concern. Please send, along with the thoroughly revised manuscript an accompanying letter stating point-by-point how you addressed the reviewers' comments in your revised paper.
Sincerely yours, Gerhard Herndl

Dear authors:
I have now received a review of your revised version of the manuscript. As you can see, the reviewer acknowledges your efforts to revise the manuscript according to the reviewers' comments. I think the paper has greatly benefited from this revision. There are only a few minor typos and improvements suggested by the reviewer which I think you can easily do. Please let me have the final version of your manuscript at your earliest convenience.
Best wishes, Gerhard Herndl