when a reader upvotes, the RH tag rewards in token not SP. therefore it would be appropriate for you to downvote with RH token but NOT SP. this can easily be done by reducing the amount of SP in the RH downvote account. since the RH did not award me SP, i see no reason for it to subtract SP. does this make it clearer?
as for your description of "reviewing nature", this is not explained correctly for users of the english language. while the word review makes sense for products, there is no common use of that word in relation to nature. I think the words you are looking for are "a detailed analysis" or "a personal study". the use of review for this type of material will not be generally understood, imho. I suggest you explain this in more detail in a subsequent post, with the example that you gave me. With photographs it is similar. while people might review cameras, or photographers, for photos the words study or analysis would be used.