<Ul> <Li> taxonomic distinctiveness; Vane - Wright et al. (1991) </Li> <Li> taxonomic diversity; Warwick & Clarke (1995) </Li> <Li> taxonomic distinctness; Clarke & Warwick (1998) </Li> </Ul> <Li> taxonomic distinctiveness; Vane - Wright et al. (1991) </Li> <Li> taxonomic diversity; Warwick & Clarke (1995) </Li> <Li> taxonomic distinctness; Clarke & Warwick (1998) </Li>

Which of the following is not a level at which diversity can be measured