KEPADATAN HYDRILLA (Hydrilla verticillata) DAN ECENG GONDOK (Eichornia crassipes)PADA KOLAM PASCA TAMBANG BATUBARA TERHADAP KEANEKARAGAMAN PLANKTON DAN KUALITAS AIR

Abstract

In this study 4treatments were used. The first treatment P0 that does not use Hydrilla and Water Hyacinth plants. The second treatment P1 with Hydrilla and Water Hyacinth plants each weighed 75 gr / m2. Third treatment P2 with Hydrilla and Water Hyacinth plants each weighing 125 gr / m2.Fourth P3 treatment with Hydrilla and Water Hyacinth plants weighed 175 gr / m2 each. The results showed that the most plankton was found in P2 treatment and the least was found in P0 treatment. The most unfavorable plankton was found in the P2 treatment and the least was found in the P1 treatment, the highest level of diversity in the P1 treatment and the lowest in the P3 treatment, the highest level of uniformity in the lowest P1 treatment in the P3 treatment, the highest level of dominance in the P3 treatment and the lowest in treatment P1. The best combination of Hydrilla and Hyacinth density during the study was in treatment 1 because it was found that the unfavorable plankton was the least profitable of all treatments, the highest level of diversity and uniformity of plankton.