Abstract:
The Momiwaren protected forest area is one of the areas in South Manokwari Regency
that has hot springs. This area is not in the volcano area. However, the resulting hot
springs cause sulfur aromas surrounding the area. This area is a protected forest
overgrown by various species of trees. For this reason, it is necessary to determine the
structure and composition of plants in this area due to the presence of hot springs in this
location. This research was carried out in the South Manokwari, Momiwaren Village. The
results showed that the number of vegetation types in the area along the hot water stream
was as many as 106 types which were divided into several levels: Seedling phase
consisting of 35 species with 88 individuals and was dominated by Vatica rassak with
important value index (IVI) of 35,770%; sapling phase consists of 55 species with 129
individuals and was dominated by Vatica rassak with IVI of 27.506%, Pole phase consists
of 29 species with 45 individuals and was dominated by Vatica rassak with IVI of
28,069%, and tree phase consists of 22 types with individual numbers 56 and was
dominated by Vatica rassak with IVI of 59,803%. The results of this study indicated that
the spread of Vatica rassak exists at all levels of plants and was a dominant species along
the stream of hot water spring.
