Judul: Diversity of Bird Species in Secondary Forest of Riau University, Pekanbaru City
Abstrak: Kawasan hutan sekunder Universitas Riau berpotensi untuk melestarikan keanekaragaman hayati khususnya burung. Penelitian bertujuan untuk menghitung keanekaragaman jenis burung, membandingkan perbedaan komposisi jenis burung pada beberapa transek, dan mendeskripsikan habitat burung di hutan sekunder Universitas Riau. Penelitian dilaksanakan pada bulan Maret hingga April 2021 di Hutan Sekunder Universitas Riau. Data burung diambil menggunakan metode IPA (Index Point of Abundance). Data diolah untuk mendapatkan indeks keanekaragaman Shannon-Wiener (H’), indeks kemerataan (E), kekayaan spesies (S), penaksiran spesies Chao, indeks kesamaan Bray-Curtis (B), serta habitatnya. Ditemukan 68 jenis burung dari 28 famili di seluruh lokasi pengamatan. Habitat patch danau memiliki nilai keanekaragaman jenis yang tertinggi (H’: 3,097, S: 39 spesies, Chao: 54; E: 0,845). Patch kecil memiliki jumlah jenis spesies terbanyak (S: 40 spesies, Chao: 40, H’: 2,925; E: 0,793), sedangkan pada patch besar 2 memiliki jumlah jenis burung paling sedikit (S: 23 spesies, Chao: 32; H’: 2,938; E: 0,937). Hasil penelitian ini menunjukkan bahwa gangguan manusia atau spesies lain dapat memengaruhi keanekaragaman dan kekayaan spesies, sedangkan ukuran patch tidak begitu berpengaruh terhadap keanekaragaman dan kekayaan jenis burung yang ada di dalamnya.
Keyword: Universitas Riau, Kota Pekanbaru, Keanekaragaman, Burung, Patch

Judul: Keanekaragaman jenis Burung pada beberapa tipe Habitat di Hutan Penelitian Dramaga, Bogor, Jawa Barat
Abstrak: Dramaga Research Forest, located in the outskirt of Bogor, provides a good habitat for birds. This research was aimed to study bird diversity, identifying habitat characteristics (around the forest path, along house edge, riparian habitat and the interior area) and recorded the activities of the local people around the forest. Point count, MacKinnon list, habitat profiling and interviews were conducted. Shannon-Wiener diversity indices and similarity level were calculated. The highest index of species diversity was in the interior area (2.34), followed by around the forest path (2.21), along house edge (1.97) and riparian habitat (1.86). The highest species richness, however, was in the riparian habitat (27 species), the forest path had 21 species, along house edge had 26 species, while the interior area was a home for 21 bird species. The highest similarity (0.81) was between forest path and interior area. On the activities of the local people, the most often was firewood harvesting. Other activities were hunting for cage birds, harvesting ferns, harvesting wild fruit and harvesting ant larvae. Activity that might disrupt the bird population was hunting.
Keyword: Bogor Agricultural University (IPB), Dramaga research forest, human activities, Bird diversity, Streptopelia chinensis, Orthotomus sepium

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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