Judul: Keanekaragaman dan Pola Sebaran Spesies Tumbuhan Asing Invasif di Resort Gunung Butak Taman Nasional Gunung Halimun Salak
Abstrak: dapat hidup serta berkembang di luar habitat alaminya dan dapat mendominasi suatu habitat. Penelitian ini bertujuan mengindentifikasi keanekaragaman spesies tumbuhan asing invasif dan pola sebaran spesies tumbuhan asing invasif di Resort Gunung Butak Taman Nasional Gunung Halimun Salak. Metode yang digunakan adalah metode analisis vegetasi kombinasi jalur berpetak pada hutan dan analisis petak ganda pada savana. Tumbuhan asing invasif di Resort Gunung Butak Taman Nasional Gunung Halimun Salak yang teridentifikasi sebanyak 24 spesies dari 12 famili yaitu Achmella paniculata, Ageratum conyzoides, Axonopus compressus, Bellucia axinanthera, Calliandra calothyrsus, Centella asiatica, Chromolaena odorata, Clidemia hirta, Commelina diffusa, Crassocephalum crepidioides, Ipomea cairica, Lantana camara, Maesopsis eminii, Melastoma malabathricum, Mikania micrantha, Mimosa pudica, Musa acuminata, Paspalum conjugatum, Piper aduncum, Solanum torvum, Stachytarpheta indica, Tihtonia diversifolia, Imperata cylindrica, dan Sphagneticola trilobata.
Keyword: pola sebaran, resort gunung butak, tumbuhan asing invasif

Judul: Keanekaragaman Spesies Tumbuhan Asing Invasif di Resort Ranu Pani Taman Nasional Bromo Tengger Semeru
Abstrak: Invasive Alien Species (IAS) is species of flora or fauna, including the microorganisms that live out of the native habitat. The IAS are growing rapidly cause it doesn’t has natural enemy, therefore it becoming weeds, pests, and diseases on native species. This study conducted on forest and savanna in Ranu Pani Resort. Vegetation analysis in the forest was using combination of strip and line quadrat method. Five species of IAS that belong into 3 families are identified based on analysis result. Vegetation analysis in savanna was using quadrat method, and the result is 2 species of IAS was identified which is also found in the forest. Seven invasive species identified in this study and the result from Morishita index showed that 5 species has a clumped distribution patterns, there are Acacia decurrens, Ageratina riparia, Austroeupatorium inulifolium, Imperata cylindrica, and Tithonia diversifolia. Furthermore, the exploration result is 2 species of IAS has found, there are Ricinus communis and Lantana camara.
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Judul: Membran Komposit Kitosan-Zeolit untuk Aplikasi Direct Methanol Fuel Cell
Abstrak: Direct methanol fuel cell (DMFC) is a fuel cell that utilize methanol as the fuel source. The electrolyte membrane used in the DMFC system in this research was chitosan-zeolite composite membrane. The composite membrane was synthesized with chitosan-zeolite composition variation of 1:1, 1:2, 1:3, and 2:1. The membranes were analyzed by Fourier transform infrared spectrophotometer (FTIR) and scanning electron microscope, and for the specific gravity. Membrane performances were tested with methanol uptake, methanol permeability, conductivity, and potential difference in the DMFC system. The FTIR spectrum showed no formation of new functional groups inducating that the composite membrane was a result of physical mixing. Morphological analysis showed that the membrane was nonporous. Chitosan-zeolite 1:3 composite membrane had the highest specific gravity and methanol uptake, 1.4226 g/mL and 41.44%, respectively. The highest proton conductivity was showed by the 1:2 chitosanzeolite composite membrane, namely 7.2946× 10-7 S/cm. Based on this research results, chitosan-zeolite composite membrane can be applied in DMFC system.
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