Judul: Potensi Ruang Terbuka Hijau Dua Perumahan di Kecamatan Bogor Barat untuk Konservasi Eks-Situ
Abstrak: Green Open Space (GOS) of housing is potential for ex-situ conservation. This study aims to determine the diversity potential of GOS vegetation on two housings (Griya Melati Housing and Pakuan Regency) in West Bogor District for ex-situ conservation. Exploratory method was used to observe GOS for public and random sample method for GOS on home gardens. The residents and housing officials interviews were used to support the research data. The number and diversity of GOS plants in Griya Melati were bigger than Pakuan Regency. It was because of the residence time in the housing, housing regulations, and residents interaction with GOS plants. There were 14 species (CITES), 8 species (IUCN), or 2 species (PP No.7 Year 1999) of protected plants that found on GOS. Awareness of the importance of ex-situ conservation of each person is one of important factor in variations in the number and diversity of GOS plants of housing. The higher a person's awareness in preserving plant, the higher the interaction with the plant. This leads to increase the insights on conservation and make the ex-situ conservation as a form of preservation of germplasm, particularly endangered plants.
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Judul: Pengaruh Karakteristik Habitat Ruang Terbuka Hijau terhadap Keanekaragaman Kupu-Kupu (Studi Kasus di Kebun Raya Bogor)
Abstrak: Bogor Botanical Garden (BBG) which functions as an ex-situ conservation places is one of the green open space (GOS) in Bogor and also home to many kinds of animals including butterflies. Butterfly serve as bioindicator of the ecological function of green open space. The purpose of this research was to determine diversity, eveness, and the similarity habitat use by butterflies on five habitat types in Bogor Botanical Garden in order to clarify the relationship between of biotic and abiotic factors in green open spaces and butterfly assemblages. This research was conducted from November to December 2011. Data collected were butterfly species and population, habitat characteristic, and vegetation analysis. Butterfly diversity was investigated by using line transect count method in five types of habitats which were surveyed in the morning (08:00-12:00) with three repetitions in the daytime under fine weather conditions. The following five transects were selected in this study: (1) Fruit plants habitat, (2) Mediterranean plants habitat, (3) Woody plants habitat, (4) Aquatic plants habitat, and (5) Garuda Garden. The diversity was calculated by using species diversity index (H’), eveness index (E) and similarity index (Sj). The relationships between biotic and abiotic factors to butterfly population were also determined. Based on survey in five sites, a total of 60 species belonging of five families : Papilionidae (7 species), Nymphalidae (33 species) Pieridae (13 species), Lycaenidae (6 species), and Hesperiidae (1 species) were captured and identified. Butterfly’s habitat preferences are: 1) The optimum temperature for a butterfly is between 28 0C-34 0C, 2) Buterflies originally found in relatively open habitats (large value of the GSF and small value of LAI), 3) Butterfly need a variety of larval host plant, nectar resources, and shelter, and 4) Have a water source, especially stagnant water source. This study shows that the provision of adequate nectar resources and larval host plant are likely to be essential to the successful conservation of butterfly species.
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Judul: Variasi Waktu Reaksi Sintesis terhadap Karakteristik Struktural Nanoplatelet α-Zirkonium Fosfat
Abstrak: Nanoplatelet α-ZrP merupakan material anorganik yang bersifat asam dan berstruktur kristal dengan rumus Zr(HPO4)2.H2O. α-ZrP disintesis dengan ragam waktu reaksi hidrotermal selama 3, 6, 12, 18, dan 24 jam untuk megevaluasi pengaruh waktu reaksi sintesis pada morfologi, ukuran partikel, dan kapasitas tukar kation (KTK). Spektrum inframerah nanoplatelet α-ZrP dari kelima ragam waktu tersebut menunjukkan keberadaan ikatan O-H, P-OH, P-O, dan PO4. Difraksi sinar-X memperlihatkan terdapat empat puncak 2θ yang serupa dengan pola difraksi standar α-ZrP dari data JCPDS. Payaran mikroskop elektron menampilkan bahwa material α-ZrP berukuran nanometer pada bagian ketebalan partikelnya dan berbentuk platelet yang pipih. Nanoplatelet α-ZrP memiliki rentang distribusi ukuran partikel yang luas. Perbedaan ukuran disebabkan oleh ragam waktu dalam proses hidrotermal. Ukuran partikel semakin besar seiring lamanya proses hidrotermal. Penentuan KTK menunjukkan semakin lama waktu sintesis maka semakin kecil nilai KTK.
Keyword: nanoplatelet α-ZrP, sintesis α-ZrP, variasi waktu hidrotermal