Abstract:
Agathis labillardieri Warb is one of the copal-producing tree species that only distributed in
Papua. In connection with regional development, the existence of this species has been a
significant concern. Therefore, it is necessary to study the characteristics of A. labillardieri
Warb in their natural growing areas in the natural protected forest of Siwi Momiwaren. The
data were collected by using the line plot method systematic sampling method with nesting plot.
The data were then analyzed to determine the species relative density, frequency, dominance,
important value index (IVI), and growth characteristics. The results showed that A. labillardieri
Warb had the highest IVI at all levels of growth, with the highest diversity index at the seedling
level of 3,49. When viewed from the relationship of the presence of species with the
characteristics of the growing site, the content of Mg and Na significantly affected the presence
of this species in the natural forest area of South Manokwari Siwi Momiwaren.
