Judul: Keanekaragaman Cacing Tanah pada Tipe Habitat dan Ketinggian Tempat yang Berbeda
Abstrak: A research on earthworm diversity was conducted on three types of habitats, the abandoned land, rice fields and horticultural plantations at different heights of Bogor and Bekasi. This study aims to determine earthworm diversity in different habitat and heights. A quadrat measuring 30x30 cm2 was used in 5x5 m2 plot in collecting the earthworm. Ten species of earthworms were obtained in the Bogor region, namely Metaphire houlleti, Pontoscolex corethrurus, Perionyx excavatus, Perionyx sp 1, Eudrilus eugeniae, Dichogaster sp., Glyphidrilus sp., and three unidentified species. Earthworms obtained in Bekasi were also of 10 species, namely Amynthas Agrestis, Metaphire houlleti, Pontoscolex corethrurus, Perionyx excavatus, Perionyx sp 2, Polypheretima elongata, Glyphidrilus sp., and three unidentified species. The highest diversity was in the horticultural plantations (H '= 0.65) for Bogor area. The horticultural plantation in Bogor region also has the highest uniformity index value (E = 0.80), and has the lowest value of Simpson's dominance index (C = 0.56).
Keyword: Bogor Agricultural University (IPB), habitat type, diversity, earthworms

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: Sintesis 1-Kloro-2-metoksi-6-propilnaftalena-1,3-dioksolana (1:1) sebagai Prekursor Asam (S)-(+)-(6-Metoksi-2-naftil)propanoat
Abstrak: Senyawa 1-kloro-2-metoksi-6-propilnaftalena-1,3-dioksolana (1:1) sebagai prekursor asam (S)-(+)-(6-metoksi-2-naftil)propanoat disintesis dari bahan awal 2-metoksinaftalena. Tahapan sintesis diawali dengan klorinasi menggunakan 2 jenis pereaksi klorinasi, yakni isosianurat terklorinasi dan NaOCl. Klorinasi dengan isosianurat terklorinasi berhasil menyintesis 1-kloro-2-metoksinaftalena sebagai produk monoklorinasi melalui pencirian dengan kromatograf gas-spektrometer massa (GC-MS). Nisbah konversi produk paling efisien diperoleh pada laju penambahan 2.5 mmol/jam. Sebaliknya, klorinasi dengan NaOCl menghasilkan produk triklorinasi. 1-Kloro-2-metoksinaftalena selanjutnya diasilasi dengan propanoil klorida, tetapi analisis dengan GC menunjukkan bahwa produk asilasi tidak terbentuk. Sistem bebas-air diperlukan untuk keberhasilan proses asilasi tersebut.
Keyword: isosianurat terklorinasi, NaOCl, nisbah konversi