[Taxacom] Biodiversity questions

[Laith Jawad]

Hi All


I have three questions regarding fish biodiversity I hope I can find their answer with you.Q1. What does it mean if you have large or small number of families with only one or wo species in each of them? Q2. What does it mean if you have large number or small number of families with large number of species?
Q3. In some biodiversity studies, people use the ration no. of species/no. families, no. of genera/no. of families. What does it mean if the ratio high or low? and when I should say it is high and when it is low?
 Are these changes have something to do with the evolution of the families in the area? 
Looking forward to hearing from you in the  near future. 
RegardsLaith A. JawadAucklandNew Zealand