Abstract

Dulangeya Village is one of the coastal villages in Boalemo Regency, Gorontalo Province which has mangrove ecosystem potential. This study aims to identify mangrove species and analyze the community structure of mangrove ecosystems in Dulangeya Village, Botumoito District, Boalemo Regency, Gorontalo Province. This research was conducted in January-March 2023. Data taken include species density, relative density, species frequency, relative frequency, species closure, relative closure, and importance value index. The method used was direct observation. Data collection on mangrove vegetation was carried out using 100m long line transects at 4 stations. Each transect consists of plots with a size of 10x10m. The results showed that there were 7 types of mangroves found in Dulangeya Village. Tree level density is classified as moderate and for sapling and seedling level is classified as good. The highest species frequency for tree level is Rhyzopora apiculata, while for sapling and seedling level is Ceriops decandra. The Importance Value Index (IVI) for the tree level obtained values ranging from 5.247 - 127.159. This shows that mangrove trees have a fairly important value for the lives of the people of Dulangeya Village.