| Research Article | 4 |
| Abstract | 4 |
| Keywords | 4 |
| Introduction | 4 |
| 1 Material and Methods | 5 |
| 2 Results | 6 |
| 2.1 Physico-chemical characteristics of experimental cages | 6 |
| 2.2 Variation in the number of colonizing individuals | 7 |
| 2.3Variation in the number of colonizing species | 8 |
| 2.4 Pattern of colonization by different macroinvertebrate groups | 8 |
| 2.5 Variation in the population and sequence of appearance of species | 11 |
| 2.6 Functional Feeding Groups | 11 |
| 2.7 Relationship between nutrient concentrations, Total organic content of formulated substrate and fauna indices | 12 |
| 3 Discussion | 12 |
| References | 13 |
| Table 1 | 6 |
| Figure 1 | 7 |
| Figure 2 | 7 |
| Figure 3 | 7 |
| Figure 4 | 7 |
| Table 2 | 8 |
| Figure 5 | 8 |
| Table 3 | 9 |
| Figure 6 | 10 |
| Figure 7 | 10 |
| Figure 8 | 10 |
| Figure 9 | 10 |
| Figure 10 | 10 |
| Table 4 | 11 |