Tenth International Conference on The Constructed Environment

Abstract

Marine Ecological Assessment was undertaken to assess and monitor the growth of mangroves, epi pelagic fauna, and benthic marine invertebrates (MBI) in 2018 and 2019 from a port facility. The growth of replanted mangrove saplings of Rhizophora mucronata and Avicenna marina were measured as height after 12 months. An increase in the growth of Avicenna marina was observed to be 5% and Rhizophora mucronata increased in height by 23%, along a constructed trestle. Statistical analysis using one-way analysis of variance (ANOVA) shows significant difference in mangrove growth. The Epipelagic faunal invertebrate species were also monitored in and around the mangroves. Statistical analysis performed shows no significant different at P=0.05 level, (p>0.669). The epipelagic community was composed of 8 genera dominated by Uca crabs. The faunal distribution pattern of epipelagic fauna during and after the constructed terminal exhibited a similar distribution behavior, except for gastropods Telescopium spp and Cerethium spp. Shannon Weiner Biodiversity Index and species richness values were comparatively low. Lower biodiversity values can be associated with a disturbed ecosystem. Juvenile fish, shrimps, swimming crabs, move towards this area for their food. Regular marine ecological monitoring of both the replanted mangroves and the benthic community should be part of the Environment Management Plan (EMP). The MBI’s are generally good indicators of ecosystem health.