<p>Dear editor:</p><p>This paper is a research article. We would like to submit for consideration of publication in <em>plos one</em>. The academic journal claims that you should proofread your manuscript very closely for mistakes and grammatical errors before uploading.</p><p>One reviewer said there are many minor spelling errors (especially ones that fool a spell-checker) and strange grammatical constructions (eg "lowly threatened areas" which should be "areas with low threat levels") and many sections could also benefit from tighter and more concise writing -- it requires a lot of careful reading to follow some of the arguments being made.</p><p> </p><p>Thank you very much for revising my manuscript.</p>