Tab. 3. Score intervals and ranges of values of the metrics for calculating the IBI PNP.
| Metrics |
1 |
3 |
5 |
Minimum |
Maximum |
| 3. Total number of native fish family (Fam) |
<13 |
13 - 14 |
> 14 |
11 |
23 |
| 6. Total number of Siluriformes species (SSi) |
<8 |
8 - 10 |
> 10 |
6 |
18 |
| 8. Total number of Cichlidae species (SCi) |
<1 |
1 - 2 |
>2 |
0 |
6 |
| 9. Total number of individuals (N) |
<443 |
443 - 769 |
>769 |
105 |
2519 |
| 10. Number of species comprising 80% of abundance (N80) |
<7 |
7 - 10 |
>10 |
3 |
28 |
| 11. Percent abundance of Characiformes (NCh) |
<16,05 |
16,05 - 27,25 |
>27,25 |
4,44 |
87,37 |
| 13. Percent abundance of Gymnotiformes (NGy) |
<9,42 |
9,42-15,44 |
>15,44 |
3,18 |
47,77 |
| 25. Number of herbivorous species (SHer) |
<1 |
1 - 2 |
>2 |
0 |
7 |
| 28. Pielou´s evenness index (J) |
<0,56 |
0,56 - 0,61 |
>0,61 |
0,51 |
0,86 |