Keanekaragaman Dan Potensi Flora Di Cagar Alam Pegunungan Cyclops, Papua

Study on richness, diversity and potential species of plant in two location in the Pegunungan Cyclops Nature Reserve had been conducted. One hundred and fifty species of plant are collected from this area, and 75 species of them are reported as potential species. The largest group of potential species is medicinal plants (35 species) follows by timber (33 species), ornamental plants (22 species), vegetables (16 species), and fruits (10 species). The results of study recommended that buah merah (Pandanus conoideus), matoa (Pometia pinnata) , tongkeu (Aidia racemosa), oi nokom (Parastemon urophyllus), and kayu besi (Instia bijuga) were very important as potential species of plants; and also reported that kreipeh (Saccharum officinarum) is a potential geneticresources of the wild sugar plants in Cagar Alam Pegunungan Cyclops

Keanekaragaman Dan Potensi Flora Di Gunung Halimun Dan Sekitarnya Di Taman Nasional Gunung Halimun*[plant Diversity and Their Potential in Mount Halimun and Surrounding Areas in Gunung Halimun National Park]

Gunung Halimun National Park is one of the largest remnants of the tropical rain forest left in Java. The forest in this area is an interesting site to be studied due to the richness,diversity and potential of its flora. Through the intensive explorations in Mt. Halimun, Mt. Ci Timur and Mt.Panenjoan, 275 species of plant have been collected.Six species of them are determined as a rare and vulnerable plants, namely Alyxia rcinwardlii, Elaeocarpus grandiflorus, Symplocos odoratissima, Calamus adspersus, C. ciliaris and Korthalsia junghuhnii;and 10 species as "new record", namely Aidia corymbosa, Calophyllum saigonensc, Cryptocarya mentek, llemiscolopia trimera, Litsea elliptica, Sonchlu helerophyllu, Phoebe elliplica, Sarcandra glabru, Sehefflera longifolia and Tetrameri.sla glabra. Based on litterature studied. 151 species out of 275 are potentialplants and the largest group is medicinal plants (60 species).Other data can be gathered as follows 42 species of timber, 19 species of ornamental plants, 16 species of fruits, 10 species of vegetables, 6 species of rattans, 4 species of forages and 4 species of dye and tannin producing plants

Keanekaragaman Jenis Tumbuhan Di Cagar Alam Kakenauwe Dan Suaka Margasatwa Lambusango, Pulau Buton Sulawesi Tenggara

Study on richness diversity plants in Kakenauwe Nature Reserve and Lambusango Game Reserve had been conducted. One hundred and seventy species of Spermatophyta, 12 species of Pteridophyta and 24 species of Bryophyta are collected from this area. One hundred and four species of Spermatophyta and 6 species of Pteridophyta are reported as potential species of plants. The largest group is timber (32 species) and other is ornamental plants (24 species), medicinal plants (17 species) and edible fruits (13 species). This study also reported that Orthorrhynchium phyllogonioides is recorded as “new record” of Bryophyta collections in Sulawesi

Keanekaragaman Jenis dan Sumber Plasma Nutfah Durio (Durio Spp.) di Indonesia

Indonesia kaya dengan sumber plasma nutfah dan keanekaragaman jenis Durio (Durio spp.). Berdasarkan hasil pengamatan yang dilakukan di Herbarium Bogoriense terhadap 270 nomor spesimen herbarium kerabat durian (Durio spp.) di Indonesia telah ditemukan 20 jenis Durio. Delapan belas jenis di antaranya ditemukan di Kalimantan, 7 jenis di Sumatera, dan hanya 1 jenis masing-masing di Jawa, Bali, Sulawesi, dan Maluku. Empat belas dari 18 jenis Durio di Kalimantan merupakan jenis-jenis endemik. Sembilan jenis di antaranya dilaporkan sebagai buah-buahan yang bisa dimakan (edible fruits), yaitu Durio dulcis (lahong), D. exelcus (apun), D. grandiflorus (durian munyit), D. graveolens (tuwala), D. kutejensis (lai), D. oxleyanus (kerantungan), D. lowianus (teruntung), D. testudinarum (durian sekura), dan D. zibethinus (durian). Dari hasil penelitian ini dapat dilaporkan bahwa D. acutifolius, D. dulcis, D. kutejensis D. lowianus, D. oxleyanus, D. Testudinarum, dan D. zibethinus merupakan jenis-jenis Durio (Durio spp.) asli Indonesia yang berpotensi untuk dikembangkan

Penyerbukan Pada Rambutan (Nepheuum Lappaceum L. Var. Lappaceum)

TAHAN UJI.1987.Pollination in Nephelium lappaceum L. var.lappaceum. Suppl.Berita Biologi. 3 : 31 - 34.Inflorescence morphology,flowering biology and insect visitors of rambutan (Nephelium lappaceum L. var.lappaceum) were observed in Semboja, East Kalimantan.Rambutan is dioeceous plant and cross pollinated by insect.It was showed that in isolated inflorescence failed to produce fruits.Six species of bees i.e. Apisindica,Trigone itama,T. nitidiventris. T. canifronsT.irridipenis and T.atripes are potential for their pollinators

Magnetic-field-induced superconductivity in layered organic molecular crystals with localized magnetic moments

The synthetic organic compound lambda-(BETS)2FeCl4 undergoes successive transitions from an antiferromagnetic insulator to a metal and then to a superconductor as a magnetic field is increased. We use a Hubbard-Kondo model to clarify the role of the Fe(3+) magnetic ions in these phase transitions. In the high-field regime, the magnetic field acting on the electron spins is compensated by the exchange field He due to the magnetic ions. This suggests that the field-induced superconducting state is the same as the zero-field superconducting state which occurs under pressure or when the Fe(3+) ions are replaced by non-magnetic Ga(3+) ions. We show how He can be extracted from the observed splitting of the Shubnikov-de Haas frequencies. Furthermore, we use this method of extracting He to predict the field range for field-induced superconductivity in other materials.Comment: 5 page