Effects of Diesel Oil Pollution On Growth Response of Rhizophora Mucronata (Lamarck) Seedlings Using Microcosm Experiment

Date of Award

8-2021

Document Type

Thesis

Degree Name

Master of Science in Environmental Science

First Advisor

Dr. Severino G. Salmo III

Abstract

A short-term microcosm experiment was made to investigate the effects of diesel oil on the growth response of Rhizophora mucronata seedlings. A water tank system containing sediments, artificial seawater, and R. mucronata seedlings was set for 30-days to mimic marine oil spill situations. A 12-hour tidal cycle period was made to simulate high tide and low tide scenarios. Silica Gel Treated n-Hexane Extractable Material (SGT-HEM) was measured in different parts of mangrove seedlings (Roots, Stem, and Leaves) as well assediments and water as a representation of Total Petroleum Hydrocarbon (TPH). Diesel oil was applied to the tank systems at concentrations of 0 (control), 2.6%, 5.0%, and 7.4% based on an initial range-finding experiment. R.mucronata seedlings indicated TPH uptake by presenting an increasing level of SGT- HEM in the order leaves

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