Judul: Komunitas Lumut Epifit Perkebunan Kopi di Tanjung Rusia, Lampung
Abstrak: Keberadaan lumut di hutan tidak luput dari ancaman kepunahan akibat dari fragmentasi hutan. Jenis lumut epifit semakin menurun akibat fragmentasi hutan karena habitat alaminya dimusnahkan. Hutan primer di Lampung semakin berkurang disebabkan adanya fragmentasi hutan untuk dijadikan lahan perkebunan. Penelitian ini bertujuan menjelaskan komunitas lumut epifit di perkebunan kopi yang diamati; ditunjukkan dengan kekayaan jenis, kelimpahan jenis, komposisi jenis, dan keragaman jenis. Pengambilan sampel lumut dilakukan di tiga blok perkebunan kopi di Desa Tanjung Rusia, Kabupaten Pringsewu, Lampung. Pengambilan sampel dilakukan dengan pembuatan lima plot 50 m x 50 m untuk menginventarisasi keragaman lumut perkebunan tersebut. Keragaman komunitas lumut epifit perkebunan kopi di Tanjung Rusia, Lampung termasuk dalam kategori rendah (H’ < 2). Lumut epifit yang diperoleh di perkebunan kopi sebanyak 18 jenis yang termasuk ke dalam 12 jenis lumut hati dan enam jenis lumut sejati. Rata-rata sebanyak dua jenis lumut dijumpai pada setiap tanaman kopi. Jenis lumut yang paling melimpah keberadaannya di kebun kopi adalah Frullania ericoides. Komposisi jenis lumut antara plot yang satu dengan plot yang lain relatif tidak berbeda.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB

Judul: Komunitas Lumut Epifit Perkebunan Kopi di Tanjung Rusia, Lampung.
Abstrak: Diversity of epiphytic bryophyte was declined due to the fragmentation of forests. This study was aimed to describe the community of epiphytic bryophyte in coffee plantations; indicated with species richness, species abundance, species composition, and species diversity. Bryophyte sampling was carried out in three blocks of coffee plantations in the village of Tanjung Rusia, Pringsewu, Lampung. Five plots of 50 m x 50 m were established for collecting bryophytes in the plantation. Diversity of bryophyte communty on coffee plantations in Tanjung Rusia, Lampung was included in low category (H’ < 2). Eighteen species of epiphytic bryophytes was obtained in the coffee plantation, consist of 12 species of liverworts and six species of mosses. Species bryophyte found in the coffee trees were two species in average. The most abundant species existed on the plantation was Frullania ericoides. Bryophyte species composition were not significantly different among the plots.
Keyword: Bryophyte, deforestation, coffee plantation, community

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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