Judul: Potensi hutan kota sebagai alternatif substitusi fungsi alat pendingin ruangan (Air Conditioner) (Studi Kasus di Kampus IPB Darmaga)
Abstrak: Kota merupakan lingkungan yang memiliki tingkat pembangunan infrastruktur, kepadatan penduduk dan segala aktifitasnya sangat tinggi, sehingga mengakibatkan peningkatan suhu udara perkotaan. Pada umumnya masyarakat menggunaan alat pendingin ruangan (Air Conditioner) di rumah-rumah maupun perkantoran. Upaya tersebut tidak murah mengingat biaya yang dibutuhkan untuk memperoleh dan mengoperasikan alat pendingin tersebut relatif tinggi dan belum terjangkau oleh masyarakat golongan menengah ke bawah. Selain itu, Air Conditioner (AC) memiliki banyak kekurangan antara lain yaitu menyebabkan dehidrasi, potensi infeksi bakteri Legionella sp., panas sebagai efek samping justru menambah pemanasan suhu udara di luar ruangan, dan merupakan salah satu penyebab terjadinya Global Warming. Sementara itu, vegetasi hutan kota dapat memberikan manfaat ekologis pada lingkungan sekitarnya, salah satunya dapat mereduksi peningkatan suhu udara di perkotaan. Tujuan penelitian ini yaitu untuk mengkaji kemampuan vegetasi hutan kota dalam menyerap panas serta potensinya untuk menggantikan fungsi alat pendingin ruangan, sehingga dapat diketahui nilai efisiensi hutan kota.
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Judul: Potensi Hutan Kota sebagai Alternatif Substitusi Fungsi Alat Pendingin Udara (Air Conditioner) di Kota Surabaya
Abstrak: Most of the societies used the air conditioners to reduce overwarming. However, besides apart from costly, air conditioner only increase global warming. One attempt to control temperatures in urban areas is by developing an urban forest. The purpose of this research was to assess the ability of urban forest vegetation in absorbing heat in replacing air conditioner, hence the efficiency of urban forest. The research would be known was conducted in the city of Surabaya. The research was initiated by performing measurements at room with Room Air Conditioner methods. The potential of urban forest made through of measuring the heat flux density on vegetation. The result show that the heat absorption ability of the trees was 2958.7 KJ/h (Bratang urban forest) and 2589 KJ/h (Wonorejo urban forest). One unit of 1 PK air conditioner ( capacity of 9495 Kj/h ) can be substituted by 3-4 trees, one unit of 1.5 PK air conditioner (capacity of 18990 Kj/h ) can be substituted by 6-7 trees and one unit 2 PK of air conditioner (capacity 28458 Kj/h) can be substituted with 9-10 trees. The total efficiency of the eight rooms studied was found token Rp 22.811.042,-/year (Bratang Urban Forest) and Rp.20.365.265,-/year (Wonorejo Urban Forest). Thus, The development of urban forests to replace air conditioner is rational because it could significantly save the cost of a room spending.
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Judul: Mud Crab’s (Scylla serrata Forskal 1775) Response to Different Decaying Level of Gold Snail (Pomacea canaliculata Lamarck 1822) Bait.
Abstrak: Mud crab is well known as omnivorous-vigorous-voracious-opportunistic-scavenger. These intertidal animals applies mainly chemoreception in their predatory behaviour. It has been commonly assumed that non fresh gold snail bait is better than fresh bait in stimulating the mud crab. This research's aim is to analyze mud crab response to different decaying level of gold snail bait. Their response were observed as time required to touch the bait and pattern and direction of the mud crab in approaching the baits. The different decaying level of gold snail baits were shown on Total Volatile Base Nitrogen (TVBN) as 16.3 mg/100g (0 day); 534.1 mg/100g (3 days); and 887.4 mg/100g (6 days). The research was conducted from July 2009 until February 2011. The TVBN test for gold snail baits were conducted at Laboratory of BBPPHP Jakarta. The experiment was conducted in Pemalang. The result showed that the average period of mud crabs to touch the baits were 52.14 minutes; 61.57 minutes and 52.57 minutes. Anova test concluded no sufficient evidence of significant effect of TVBN content of gold snail bait on mud crab’s feeding behaviour. Movement pattern B, i.e. left and right deviation followed by straight forward movement to the bait, was commonly exhibited by the crabs. Consequences of time period required by the mud crab to approach the bait on fishing operation is discussed.
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