Judul: Keanekaragaman Jenis Burung pada Beberapa Tipe Tegakan di Hutan Pendidikan Gunung Walat, Sukabumi, Jawa Barat
Abstrak: Gunung Walat Educational Forest (GWEF) which is a plantation forest that consists of several homogenous standsis a habitat of various bird species. Difference in tree species composition, canopy coverage and canopy height could cause different birds species diversity. The objectives of this research were to describe the habitat, to identify bird species diversity, to find out composition of bird guild and to describe use of vertical startification by birds. This research was carried out in four types of forest stands of GWEF area; those are Schima, Agathis, Pine and mixed stands (Agathis, Pines and Schima) at August 2011). Vegetation measurement to describe vegetation profile was conducted in 10 m x 50 m sample plot on each stand type, while profile of other type of vegetation was observed in 3 m x 3 m sample plot. Birds data were collected by using IPA method and Mackinnon’s Species list method (Mackinnon et al. 1998). Analysis of bird component was performed by using Shannon-Wiener’s diversity index and Jaccard’s similarity index of bird’s communities. Analysis of habitat component and tree profile was conducted descriptively, while guild analysis was performed by referring to Mackinnon at al. (1998), Wong (1986), Lambert and Collar (2002) and also Novarino (2008). Relationship between birds and vegetation was analyzed descriptively. Schima stand (518-573 m above sea level) is located in relatively flat topography with a small creek goes through the habitat in the observation site. Total of other species of vegetation in this stands was 21 species. Agathis stands (+ 529 m above sea level) were located in relatively slope topography with total of other vegetations were 16 species. Pine stand (545-601 m above sea level) is located in relatively plain topography with total of other vegetations were 13 species. Mixed standthat is consisted of three species of trees, Pines, Agathis, and Schima, is located in relatively plain topography at altitude of 518 - 573 m above sea level and has total of other vegetations recorded 18 species. Canopy stratification in those four types of stands were could be divided vertically into top canopy, middle canopy, lower canopy, stem and forest floor. There were 49 species of 24 families of birds found during research period with Cuculidae as family with highest total species (6 species). Highest total bird’s species was recorded at Schima stands (30 species, H’= 3.03, E=0.89), then followed by Agathis stands (28 species, H’=2.79, E=0.83), mixed stands (27 species, H’= 2.73, E=0.85),and the lowest was recorded at Pines stands (25 species, H’=2.73, E=0.85). Highest IS value was recorded at Pines stands and mixed stands (ISJ=0.63). Bird communities in GWEF were classified into 12 guild categories, with insect feeder that actively feeding at canopy as guild with the highest total species (14 species). Highest utilization of canopy strata by birds in four types of stands was recorded at top canopy layer, while the lowest was recorded at stem layer. Habitat variety, Schima stands that bearing flower and also higher total of other vegetations was supposed to be the causes of highbird diversity in Schima stands. Moreover, location of tree observation
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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: Katalis Zink Ferit Tersubstitusi Cu untuk Oksidasi Benzil Alkohol
Abstrak: Katalis berperan dalam menurunkan energi aktivasi. Katalis ZnFe2O4 dan ZnFe2O4 tersubstitusi Cu disintesis menggunakan metode kopresipitasi untuk digunakan dalam oksidasi benzil alkohol. Katalis dicirikan dengan spektrofotometer inframerah (FTIR) dan difraktometer sinar-X. Spektrum FTIR menunjukkan puncak serapan dari ikatan Zn-O dan Fe-O masing-masing pada rentang 559‒575 cm-1 dan 419‒447 cm-1. Difraktogram menunjukkan terbentuknya fase tunggal Zn0.6Cu0.4Fe2O4 pada katalis ZnFe2O4 tersubstitusi Cu 20%. Benzil alkohol dioksidasi dengan sistem refluks. Konversi benzil alkohol meningkat dengan meningkatnya suhu. Kadar benzaldehida yang dihasilkan dengan katalis ZnFe2O4 tersubstitusi Cu 20% lebih tinggi dibandingkan dengan katalis ZnFe2O4 yang tidak tersubstitusi dan yang tersubstitusi Cu 60 dan 80%. Hal tersebut menunjukkan bahwa katalis ZnFe2O4 tersubstitusi Cu 20% memiliki kinerja yang lebih baik dalam oksidasi benzil alkohol menjadi benzaldehida dengan kadar benzaldehida 8.763%.
Keyword: Benzil alkohol, katalis, oksidasi, ZnFe2O4