Herwarsono Soedjito

Bio: Herwarsono Soedjito is an academic researcher from Indonesian Institute of Sciences. The author has contributed to research in topics: Anaphalis & Shrub. The author has an hindex of 1, co-authored 1 publications receiving 7 citations.

Structure and composition of subalpine summit habitats on Mt. Gede-Pangrango complex, Cibodas Biosphere Reserve, West Java, Indonesia

Abstract: SADILI, A., KARTAWINATA, K., KARTONEGORO, A., SOEDJITO, H. & SUMADIJAYA, A. 2009. Structure and composition of subalpine summit habitats on Mt. Gede-Pangrango complex, Cibodas Biosphere Reserve, West Java, Indonesia. Reinwardtia 12 (5): 391–404. We undertook a phytosociological analysis of the subalpine herbaceous and shrubby vegetation at the Mandalawangi and Suryakencana meadows and the scrub at the Crater Side at the tops of Mt. Gede and Mt. Pangrango in the Cibodas Biosphere Reserve. We recorded 30 species of 18 families of saplings, shrubs, seedlings and herbs in 78 quadrats with a total area of 7,800 m2. Anaphalis javanica, a woody tall herb and long-lived pioneer was the dominant species in the sapling and shrub stratum, while Isachne pangerangensis, Tripogon exiguus and Carex verticillata were prevalent in the seedling and herb stratum at Mandalawangi and Suryakencana. Stunted shrub is Vaccinium varingaeifolium, dominant in the Crater Side scrub. Based on the importance values, the Mandalawangi meadow may be designated as the Anaphalis javanica-Isachne pangerangensis community type, the Suryakencana meadow as Anaphalis javanica-Tripogon exiguus community type and the Crater Side scrub as Vaccinium varingiaefolium-Seliguea feei community type. The similarity indices between Mandalawangi and Suryakencana community types were very high (>75 %) while those between the Crater Side and Mandalawangi and the Crater Side and Suryakencana were very low (<10 %). Poor soil conditions and fire seem responsible for the perpetual existence of A. javanica.

Kekayaan jenis pohon di hutan taman nasional gunung gede pangrango, jawa barat

Abstract: Trees are one of the main important structures in forest vegetation. Other than timber and non-timber product, trees also indirectly provide ecosystem services. Until now, information on tree species richness and its relation to the elevation gradient in Mount Gede-Pangrango National Park (MGPNP) is not exist. The objectives of this research were to estimate the trees species richness and describe the relation between tree diversity to the elevation gradient in this area. A total of 26 plots (size: 20 m x 100 m each) from 1,013 m - 3,010 m asl were laid down and classified into three zones i.e. sub montane (1,000 m-1,500 m asl), montane (1,500 m-2,400 m asl) and subalpine zone (>2,400 m asl). The results showed that tree species richness on this mountain taken from 1,479 enumerated trees was 127 species. Species richness of each zone were 79, 70 and 33 species for sub montane, montane and sub alpine zone respectively. The sub montane zone hold the highest tree species richness. A significant effect of elevation gradient to tree diversity indices was identified. The individual number was positively correlated, while species richness, Shannon-Wiener index and Evenness index were negatively correlated with elevation gradient. Key words: Montane zone, Mount Gede Pangrango National Park, sub alpine zone, sub montane zone, trees. ABSTRAK Kelas pohon merupakan unsur penting dalam struktur vegetasi suatu hutan. Nilai penting pohon selain sebagai penghasil kayu dan non kayu juga berperan penting dalam jasa lingkungan. Sampai saat ini, informasi tentang berapa jumlah minimal jenis pohon yang ada di Taman Nasional Gunung Gede-Pangrango belum secara persis diketahui. Penelitian ini bertujuan untuk memperoleh informasi tentang jumlah minimal jenis pohon dan keterkaitannya dengan faktor ketinggian tempat di Taman Nasional Gunung Gede-Pangrango. Sejumlah 26 plot berukuran 20 m x 100 m yang berada pada rentang ketinggian 1.013-3.010 m dpl dibuat dan dikelompokkan dalam tiga zona, yaitu zona sub montana (1.000-1.500 m dpl), zona montana (1.500-2.400 m dpl) dan zona sub alpin (> 2.400 m dpl). Hasil penelitian menunjukkan bahwa total jenis pohon yang terdapat di kawasan ini (yang terdiri dari 1.479 individu pohon), yaitu 127 jenis dengan jumlah jenis pada masing-masing zona adalah 79 jenis (zona sub montana), 70 jenis (zona montana) dan 33 jenis (zona sub alpin). Hasil tersebut menunjukkan bahwa dari 127 jenis pohon yang berhasil dicatat, zona sub montana merupakan zona yang memiliki jenis pohon terbanyak. Selain itu juga, hasil penelitian ini menunjukkan bahwa ada hubungan yang signifikan antara ketinggian tempat dengan indeks keragaman pohon. Jumlah individu pohon diketahui memiliki korelasi yang positif dengan faktor ketinggian, sementara jumlah jenis, indeks Shannon-Wiener dan indeks Evenness memiliki korelasi negatif dengan faktor ketinggian. Kata kunci: Pohon, Taman Nasional Gunung Gede-Pangrango, zona montana, zona sub montana, zona sub alpine.

Anatomy and Morphological Study of Mentigi Gunung (Vaccinium varingiaefolium (Blume) Miq.) in Area of Mount Batok-Indonesia

Abstract: Mentigi Gunung ( Vaccinium varingiaefolium (Blume) Miq.), endemic plant of Java which dominates sub-alpine area of Mount Batok. This study aimed to characterize plant’s anatomical and morphological structure for conservation purpose. Microscopic and macroscopic approaches used for organs observation. Morphological observation showed that this plant has a tap root, circular stem with lenticels on its surface. It has red young stem with a lot of trichomes, brown old stem, oval leaves with integer margins. Leaves have stone cells, cuticles, idioblasts. Young leaves are red and turn green. Flowers are purple with five sepals, five petals, 10 androecium and one syncarp gynoecium. Trichomes spread all over flower structures. The type of microspore is tetraeder. The gynoecium sits on the receptacle composed of five carpellum with inpherus ovulus. The fruits are green, globular, with trichomes and turn black when ripe. It has stone cells with purple cytoplasm and golden brown seeds. Vascular bundle is opened collateral type; the type is parasitic with kidney-shaped guard cells. Keywords: Anatomy; morphology; mentigi gunung; Vaccinium varingiaefolium (Blume) Miq.

DIVERSITY, DISTRIBUTION, AND UTILIZATION OF ORCHIDS SPECIES (Orchidaceae) IN BODOGOL FOREST, GEDE PANGRANGO NATIONAL PARK, WEST JAVA

Abstract: To investigate the diversity, distribution, and utilization of orchid, a study was conducted in Bodogol forest of Gede Pangrango National Park (TNGP). Around 82 species of 41 genera of orchids were identified in this area which consisted of 58 species of epiphytes orchids and 24 species of terrestrial orchids. The genera of Agrostophyllum , Dendrobium , and Eria were the most commonly found orchid in this area. Distribution of orchid species varied from India to Pacific islands, including Japan. Among recognized six endemic orchid species of Java island, two new records of orchids at GPNP were determined, i.e. Neuwiedia veratifolia and N. zollinger i var. javanica . In general, the orchids in Bodogol forest have not been economic commodities priority yet, but several species were potential to be developed for utilization.

KEKAYAAN JENIS POHON DI HUTAN TAMAN NASIONAL GUNUNG GEDE PANGRANGO, JAWA BARAT (Tree Species Richness in Forest of Mount Gede-Pangrango National Park, West Java)

Abstract: ABSTRACT Trees are one of the main important structures in forest vegetation. Other than timber and non-timber product, trees also indirectly provide ecosystem services. Until now, information on tree species richness and its relation to the elevation gradient in Mount Gede-Pangrango National Park (MGPNP) is not exist. The objectives of this research were to estimate the trees species richness and describe the relation between tree diversity to the elevation gradient in this area. A total of 26 plots (size: 20 m x 100 m each) from 1,013 m - 3,010 m asl were laid down and classified into three zones i.e. sub montane (1,000 m-1,500 m asl), montane (1,500 m-2,400 m asl) and subalpine zone (>2,400 m asl). The results showed that tree species richness on this mountain taken from 1,479 enumerated trees was 127 species. Species richness of each zone were 79, 70 and 33 species for sub montane, montane and sub alpine zone respectively. The sub montane zone hold the highest tree species richness. A significant effect of elevation gradient to tree diversity indices was identified. The individual number was positively correlated, while species richness, Shannon-Wiener index and Evenness index were negatively correlated with elevation gradient. Key words: Montane zone, Mount Gede Pangrango National Park, sub alpine zone, sub montane zone, trees. ABSTRAK Kelas pohon merupakan unsur penting dalam struktur vegetasi suatu hutan. Nilai penting pohon selain sebagai penghasil kayu dan non kayu juga berperan penting dalam jasa lingkungan. Sampai saat ini, informasi tentang berapa jumlah minimal jenis pohon yang ada di Taman Nasional Gunung Gede-Pangrango belum secara persis diketahui. Penelitian ini bertujuan untuk memperoleh informasi tentang jumlah minimal jenis pohon dan keterkaitannya dengan faktor ketinggian tempat di Taman Nasional Gunung Gede-Pangrango. Sejumlah 26 plot berukuran 20 m x 100 m yang berada pada rentang ketinggian 1.013-3.010 m dpl dibuat dan dikelompokkan dalam tiga zona, yaitu zona sub montana (1.000-1.500 m dpl), zona montana (1.500-2.400 m dpl) dan zona sub alpin (> 2.400 m dpl). Hasil penelitian menunjukkan bahwa total jenis pohon yang terdapat di kawasan ini (yang terdiri dari 1.479 individu pohon), yaitu 127 jenis dengan jumlah jenis pada masing-masing zona adalah 79 jenis (zona sub montana), 70 jenis (zona montana) dan 33 jenis (zona sub alpin). Hasil tersebut menunjukkan bahwa dari 127 jenis pohon yang berhasil dicatat, zona sub montana merupakan zona yang memiliki jenis pohon terbanyak. Selain itu juga, hasil penelitian ini menunjukkan bahwa ada hubungan yang signifikan antara ketinggian tempat dengan indeks keragaman pohon. Jumlah individu pohon diketahui memiliki korelasi yang positif dengan faktor ketinggian, sementara jumlah jenis, indeks Shannon-Wiener dan indeks Evenness memiliki korelasi negatif dengan faktor ketinggian. Kata kunci: Pohon, Taman Nasional Gunung Gede-Pangrango, zona montana, zona sub montana, zona sub alpine.