Biogeochemistry / Water quality / Carbon Cycle / Chemical Oceanography / Nutrients / IMPACT OF MUNICIPAL WASTES LEACHATES ON GROUND WATER QUALITY – OWERRI MUNICIPAL AS A CASE STUDY. / Coastal waters / Limiting Nutrients / Available Nutrients / IMPACT OF MUNICIPAL WASTES LEACHATES ON GROUND WATER QUALITY – OWERRI MUNICIPAL AS A CASE STUDY. / Coastal waters / Limiting Nutrients / Available Nutrients