Frequently Asked Questions

    What do the scores mean?  
  What if I do not know the answer to a question?  
  How many species should I rank before I pick one?  
  What if I disagree with the rankings I obtained?  
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What do the scores mean?

The numbers themselves have no inherent meaning; they are used only to rank one species against another. A higher Utility score indicates that a species is more useful in biomonitoring; a higher Vulnerability score indicates that a population has greater susceptibility.

 

What if I don’t know the answer to a question?

The program will not allow you to leave a question blank, so if you’ve consulted with the suggested websites and still don’t know the answer, take your best guess. Remember, the scores are not absolute but relative values that will change for every species, study area, and/or user.

 


How many species should I rank before I pick one?

Since every situation is different, it’s up to you. Presumably, you will already have some ideas about your study area and project before you use the ranking programs. The Utility and Vulnerability Indices can help you hone and focus these ideas.

 


What if I disagree with the rankings I obtained?

Ultimately you must rely on your own judgment. While the ranking programs are written to be general in order to apply to many species and study areas, they cannot take into account every situation. Please use them as one of several tools in your decision-making process.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
 
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