Analysis of mangrove vegetation on Mursala Island

Abstract

Mangrove forest destruction is a serious problem that is currently occurring in almost all of Indonesia. To ensure the success of mangrove forest rehabilitation and as evaluation material, monitoring the condition of the rehabilitated mangrove ecosystem is very important. The methods used in measuring and observing mangrove vegetation are the path method and the grid line method. Transects were selected using the Purposive Sampling method after conducting an initial survey. The transect locations were chosen to reflect the overall condition of the mangrove forest in the study area. As a result of the research, 30 research plots were built, and 6 types of mangrove species from 3 families were obtained, namely Rhizophoraceae (Rhizophora stylosa, Rhizophora mucronata, Rhizophora apiculata, Bruguiera gymnorhiza), Combretaceae (Lumnitzera racemosa), and Meliaceae (Xylocarpus granatum). Rhizophora stylosa dominates with the highest IVI, namely (118.4), followed by Rhizophora mucronata (78.0) and Rhizophora Apiculata (55.1). This shows that Rhizophora stylosa has the strongest role in the tree community in the study area. At the seedling stage, the diversity index (H’) reached 0.4, indicating a relatively low level of diversity. At the sapling stage, the diversity index increased to 1.0585 and at the tree growth stage, the diversity index was 1.38, indicating a balanced level of diversity.