Castanopsis Argentea Research Articles

Pemantauan Ekologi Sarang Elang Jawa (Spizaets Bartelsi) di Wilayah Hutan Cikaniki Taman Nasional Gunung Halimun Salak

Javanese eagle ( Spizaetus bartelsi ) is one type of bird of prey endemic to Java. The existence of birds of prey in an ecosystem is very important, because of its position as the top predators in the food chain or pyramid. The purpose of this study was to determine the characteristics and ecological nests, as well as the proliferation of Java Eagle Cikaniki especially in forest areas. Observation method used is cooperative mehod five observation points around forest areas Cikaniki. Through monthly observation, ranges Javanese eagle depicted on the map, and mapped point is the assumption of Javanese eagle nesting sites. Observations are also done through direct observation at the location around the nest. The results explain that Java Eagle identified seven individuals that belong to three families: Pengkeh family, relatives and family Andam I Andam II. During the observation, observed breeding success of one family, it is characterized by the presence of individual chicks that fly around the nest site. During the monitoring also the sound of Javanese eagle chicks in the vicinity of the nest. Cikaniki in forest areas, family observed using the Java Eagle Castanopsis argentea tree to lay a nest. The tree is a towering trees compared to other tree with a height of about 30 meters. Java Eagle nest situated at an altitude 16 meters above the ground on the second branch. Nest trees grow at an altitude of 1,100 meters above sea level and on a fairly steep slope topography, close to the creeks and within 500 meters of open wilayan limit.

Rarity Status and Habitat of Shorea laevis and Shorea leprosula in Muara Teweh, Central Kalimantan

Forest exploitation and conversion to other landuse may cause lost of biodiversity, including most important dipterocarp trees species, i.e. Shorea leprosula and Shorea laevis . The objective of this study was to determine the rarity status of the two important shorea species, i.e. S. laevis and S. leprosula , based on IUCN criteria, their habitat characteristics, and their association with other species, as one of the basis for determining their conservation strategy as a part of forest management. This study was conducted in three types of ecosystem (virgin forest, secondary forest, and fragmented forest) in Muara Teweh, Central Kalimantan. Methodology used in this research includes vegetation and tree diversity analysis. Study results showed that both S. laevis and S. leprosula were included within category of “low risk” in the 3 types of ecosystem in the forest area being studied. Habitat characteristics which determined the absence of S. laevis in the virgin forest habitat was the soil permeability which was too low, whereas other soil chemical and physical properties in the three types of ecosystems were relatively similar. Presence of S. laevis were positively associated with species of S. uliginosa , Dialium platysepalum , Dipterocarpus ibmalatus , Palaquium rostatum , Vatica rasak , Adinandra sp ., and Memecyclon steenis . On the other hand, S. leprosula were positively correlated with S. kunstleri , Castanopsis sp ., Shorea sp ., Quercus bennettii , Castanopsis argentea , and D. hasseltii .

Keragaman Komunitas Tumbuhan Di Taman Nasional Gunung Ciremai

Research on vegetation characteristics and vegetation community similarities was conducted in Mount Ciremai National Park. Three vegetation communities found in the southern part of this National Park, i.e. Parigi-Paguyangan Badak-Acip area (PPA), Karamat Purnajiwa area (KP) and Karamat Sanghiang area (KS), Kuningan, West Java, were investigated. Quadrant method with 10 observation plots per ha was used for vegetation analysis whereas the Jaccard and Sorensen similarity indices were used to evaluate community similarities among the three locations. Vegetation community in PPA (1.100 — 1.580 m asl) was highly dominated by Castanopsis argentea (saninten). This was quite different with the vegetation communities of KP and KS (1.000 — 1.200 m asl) that were dominated by Horsfieldia glabra (kalapa ciung) and several other co-dominant species, such as Sterculia sp., Ficus benjamina and Ficus glabella. Further analysis using Jaccard Similarity Index (lsj) showed that the vegetation communities of KP and KS had a relatively high similarity.