I.B. Ipor

• University of Malaysia, Sarawak

Lambir Hills National Park is located at latitude 4'N, longitude 114'E in Miri. It was gazetted on the 26 June 1975 covering an area of about 6952 hectares. This includes the spectacular central portion of the Lambir Hills featured by a rugged east-west trending sandstone escarpment with height about 465 m above sea level. Lambir Hills National Par...

A review of the white-flowered Amorphophallus species in Sarawak is presented. A total of five species are recognized, four of which belong to the Eburneus Group and are restricted to limestone, and moreover, locally endemic: A. eburneus Bogner (Padawan and Tebedu areas), A. brachyphyllus Hett. (Bau), A. juliae sp. nov. (Merirai) and A. niahensis s...

A study on the population patterns of Tapang, Koompassia excelsa (Becc.) Taubert was conducted at Gunung Gayu, Padawan. Sarawak. Twenty three plots of 30m × 30m were established to determine the floristic structure and composition of the forested areas with the occurrence of mature Tapang trees, survival of seedlings and distribution pattern of the...

A new species of Costus L (Costaceae) from Tutoh in Miri Division of Sarawak is described and illustrated. It is similar to Costus speciosus (Koenig) Sm. but differs by having the inflorescence on the terminal of separate leafless shoot and reddish band on the tip of stamens. Its distribution is restricted to a small area at altitudes between 500 a...

The ecological study of Cryptocoryne pallidinervia Engler was conducted at three different locations vis. Sungai Keranji (Lundu), Sungai Batu (Triso, Sri Aman) and Lingga Peat Swamp Forest Reserve (Lingga, Sri Aman).The study comprised of morphological characteristics, growth pattern and biomass allocation of C. pallidinervia, forest structure and...

The presence of Cryptocoryne fusa De Wit (Araceae) in Sarawak is reported, described and illustrated. Presently it is only recorder at Kampung Bulo, Lubok Antu, Sri Aman, Sarawak and considered very rare and probably facing extinction in Sarawak with the continuous destruction of its habitat as a result of agricultural activities.

Shifting cultivation is the simplest and very widespread method of agriculture. It is estimated that about 3.2 million hectares (ha) of land has been cleared for shifting cultivation. It is basically developed from the traditional way of hunting and gathering by the rural people. In Sarawak, the people are mainly Iban, Bidayuh, Kayan, Kenyah, Kelab...

Preliminary results are described on the comparison of the optical and radar images of the rainforests of Sarawak, Malaysia, with the ground-truth data collected from the field survey. The test sites are the mangrove and adjacent virgin forests, and oil-palm plantation areas. Visible and infrared images acquired by the MOS-1b have shown their capab...

Seven species of wild Piper namely Piper canimum Bl., P. erecticaule C.DC, P. aff. longamentum C.DC, P. magnibaccum C.DC, P. poryphyrophyl lum N.E. Br., P. umbellatum Linn., P. aff. ridleyi C.DC were collected from various localities of the Crocker Range, Sabah during the expedition held on the 15-24 October 1999. Most of the species were climbers...

Four localities, viz., Bario Asal, Pa' Ukat, Aur Bilak Ligan and Batu Lawi were surveyed using 20m x 20m plots. The flonstic composition and structures of the forest in this plots were determined. The types of forest associations established from the survey included Cratoxylum formosum—Eugenia rugosa association for Bario Asal, Gymnostoma nobile— C...

A glasshouse study was conducted to determine the effect of shade on the uptake, translocation and activity of paraquat on Mikania micrantha H.B.K. The uptake, translocation and activity of paraquat were significantly enhanced at low light intensity. Placement of plants grown initially under 75% shade and transferred to 0% shade resulted in signifi...

meneliti keberkesanan glyphosate, imazapyr, glufosinate ammonium dan paraquat dichloride dengan menggunakan kaedah tali-sumbu pengelap untuk mengawal rumput, Ischaemum magnum. Kawalan I. magnum meningkat apabila kadar penggunaan racun herba bertambah. Kawalan yang bagus di perolehi pada kadar 0.4 a.i. kg ha-1 bagi imazapyr dan 1.5 a.i. kg ha-1 bagi...

Abstrak: Corak sebaran Cryptocoryne ciliata (Roxburgh) Schott (Araceae) sepanjang 22 km di Sungai Sarawak, Kuching telah dikaji. Terdapat perbezaan morfologi antara tumbuhan yang disampel daripada lokasi yang berbeza. Jumlah bilangan tumbuhan, jumlah daun per kuadrat, jumlah berat kering tumbuhan, luas permukaan daun, berat kering daun, rizom, akar...

ABSTRAK Lindungan telah mengakibatkan perubahan terhadap ciri-ciri histologi daun Mikania micrantha H.B.X., dimana daun yang berada pada intensiti cahaya yang tinggi adalah lebih tebal daripada daun dari intensiti cahaya yang rendah. Peningkatan dengan kadar yang bermakna bagi luas semburan dan retensi irnazapyr di permukaan atas daun dalam intensi...