Next are your concerns. Remember you are writing to another human being, so be polite and realistic. Also, if you are unsure about something, be honest and say you are unsure. This is a learning process, so don’t feel afraid to admit if you are not confident about your concerns, or part of the work is out of your area of expertise.
Major concerns:
- Although the authors investigated the most advanced imputation methods, the most simple and common imputation methods were not tested: i) filling up trait gaps using data on congeneric (or closely related) species and ii) imputing data for entire large clades (eg. families). I suggest testing the performance of these simple methods.
Minor concerns: