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Studi Pendahuluan Struktur Vegetasi Hutan Gambut di Pulau Padang, Propinsi Riau
(IPB (Bogor Agricultural University), 1989)
Pulau Padang forest vegetation is a typical peatswamp forest on ombrogenous peat, that is the most common peat in eastern coaat of Sumktcan. The peat is characterized by very acid d r a m watu and poorness in nutrients ...
Review of The Origin and Evolution of Social Signals in Ducks; in Particular The Function of Courtship Displays
(IPB (Bogor Agricultural University), 1989)
Perilaku bercumbu ialah pola perilaku sosial yang berkaitan dengan kawin. D a h tulisan ini teori evolusi dan asal-usul perilaku dibahas dengan mengemukakan contoh yang terdapat pada suku Itik-itikan (Anatidae) terutama ...
Measures to Increase Wild Bird Populations in Urban Areas in Java
(IPB (Bogor Agricultural University), 1989)
In a previous paper on management of urban birdlife the role of nest sites was discussed (Van Balen, 1987). Attention will be paid now to what measures could be taken to improve bird habitats in relation to food availability. ...
Kehidupan dan Keanekaragaman Jenis Lebah di Hutan Pendidikan Gunung Walat
(IPB (Bogor Agricultural University), 1989)
Beekeeping development in Indonesia is supported either by the presence of many bee species which have a high potential to produce honey and many flowering plant species. Moreover, beekeeping has long been introduced as ...
Dampak Pencemaran Udara Terhadap Kesehatan Manusia dan Beberapa Komponen Sumberdaya Alam
(IPB (Bogor Agricultural University), 1989)
Carbon-monoxide, chloro-fluorocarbon, nitrogen-oxides, carbondioxide, sulfur-oxides, hidrocarbons, particulate matters and others are known as potential air pollutants. These compounds can be released by automobiles, ...
Kandungan Timbal pada Beberapa Jenis Pohon Pinggir Jalan di Jalan Sudirman, Bogor
(IPB (Bogor Agricultural University), 1989)
Because automobiles emitted lead particles, plants grown at various distances from the road can be contaminated by air-borne lead particles. The deposition of lead particles on the leaf surfaces is defined as lead-adsorption ...
Suatu Tinjauan terhadap Keanekaragaman Jenis Burung dan Peranannya di Hutan Lindung Bukit Soeharto, Kalimantan Timur
(IPB (Bogor Agricultural University), 1989)
Bird observations in the tropical rain forest of the Bukit Soeharto Protection Forest conducted in 1986 and 1987, had identified 157 bud species. The observation was focussed the diversity of birds, behaviour, group size, ...
Gejala Inbreeding dalam Penangkaran Satwa Liar
(IPB (Bogor Agricultural University), 1987)
Captive breeding of some endangered wildlife species is very important, because the extinction of small population is almost inevitable, therefore, the genetic aspects of this breeding program should be made top priority ...
Bird Trading at The Pasar Pramuka, Jakarta and the Bird Catching Techniques
(IPB (Bogor Agricultural University), 1989)
The observation of bird trading at the Pasar Pramuka, Jakarta was aimed to know the activity of bud sellers, catchers and consumers. There were 150.000 buds on sale in December 1987, including the protected buds. They ...
Pangium edule, an Almost Forgotten Plant and Its Potential
(IPB (Bogor Agricultural University), 1989)
Pangi (Pangium edule Reinw.) is one of the Indonesian plant, which is recently becoming rare, especially in Java and Sumatera. Based on the herbarium collections, the plant is distributed throughout Indonesia. It grows ...