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Articles by Hafiza A. Hamid
Total Records ( 4 ) for Hafiza A. Hamid
  H. Abdul Halim , H.A. Jumaat , M.A. Juhari , A.R. Sahibin , Hafiza A. Hamid , Ramlan Bin Omar , Gire Kibe Gopir , Jumat Salimon and Barzani Qasim
  A study integrating remote sensing and Geographical Information System (GIS) was carried out in the Kuala Terengganu district, Terengganu, Malaysia to map and determine the land use change as a result of development pressure in the area. Two sets of Landsat Thematic Mapper (TM) dated 31 July 1988 and 14 July 2002, at scale 1: 150 000 were acquired. Land use classes were interpreted from these images and the resultant maps were checked in the field to determine ground truth and mapping accuracy. The land use map data were transferred directly into the computer via ILWIS (Integrated Land Water and Water Information System) version 3.1 software. It shown that in this study seven categories of land use changes were detected namely forest (-9.93%), agricultural (-1.46%), swamp (-36.92%), urban (190.29%), cleared land (-21.43%), water bodies (-7.48%) and bush/shrub (6.34%). The accuracy assessment undertaken showed that the total accuracy for produced the map is 77.89%. This study showed that Landsat TM is a useful data for study in land use change.
  Jumaat H. Adam , Hafiza A. Hamid , Mohd Afiq Aizat Juhari , Siti Norhafizah Ahmad Tarmizi and Wan Mohd Razi Idris
  The study to determine the species composition and community structure of pitcher plants in Rantau Abang, Terengganu was carried out using plot method. Nepenthes gracilis was recorded in plots 1-3 at 10, 30 and 50 m, N. rafflesiana was recorded in P2 and N. ampullaria in P3. Nepenthes gracilis differs morphologically from the other two species by its sessile leaves, decurrent leaf base, angular stem shape, very thin peristome and partly glandular inner pitcher cavity wall. Nepenthes ampullaria differed by its panicle inflorescence, cuneate lids’ shape, narrower than the mouth glandless, lower lid surface, bearing up to 6-flowered bracteolate pedicels and urceolate lower pitcher. Nepenthes rafflesiana differed by infundibulate and ellipsoid upper and lower pitcher, densely glandular lower lid surface, toothed inner peristome margin. Population structures of these species comprised of seedlings, saplings and matured plants. These species consist of 52.61% of juvenile stage (seedlings and saplings) and 47.39% of matured stage. A total 5.68 and 2.84% of these species population bear male and female inflorescence. Morisita’s Index of Dispersion Pattern and Chi-square test showed that the dispersion pattern of all life stages of these species was significantly aggregated. Their Id values were from 1.12 to 3.78. Matured plants and sapling of N. gracilis recorded the lowest and biggest Id. These species grow in soil that is acidic and low organic matter content. Nepenthes gracilis grows in sandy loam, loam and sandy clay; Nepenthes ampullaria and Nepenthes rafflesiana grow in sandy clay and loam.
  Jumaat H. Adam and Hafiza A. Hamid
  A dichotomous key and description of five pitcher plants taxa recorded from Universiti Kebangsaan Malaysia Campus is given. In this study, a new species is Nepenthes sharifah-hapsahii Adam and Hafiza is describe. Three other species and one hybrid found here are Nepenthes gracilis Korthals, Nepenthes ampullaria Jack, Nepenthes mirabilis (Loureiro) Druce and Nepenthes x trichocarpa Miquel. Nepenthes sharifah-hapsahii is closely related to Nepenthes gracilis but differ in having cylindrical upper stem, lamina base attenuate into petiole like region and not wing, lower lid surface densely covered with nectar glands, digestive glands on inner cavity covered by extended epidermal roof, peristome ribs distinct and pedicels commonly 2-flowered. On the other hand Nepenthes gracilis has angular upper stem, sessile leaves, lamina base decurrent, wings extends almost into one internode, lower lid surface sparsely covered with nectar glands, digestive glands exposed and epidermal roof poorly developed, persitome rib not distinct and pedicels all 1-flowered. Nepenthes ampullaria differs from the other taxa in having lower pitcher which is urceolate in shape, inner pitcher cavity wholly covered with digestive glands, lower lid surface not covered by nectar glands, paniculate inflorescence and pedicels commonly with 3-flowered and subtended by bract. Nepenthes mirabilis can be recognized and differentiated from the other species in having broad and flattened peristome and fimbriate leaves margin.
  Jumaat H. Adam and Hafiza A. Hamid
  Three species and two varieties of pitcher plants were recorded from Lambir Hill in Miri, Sarawak State of Malaysia. They were Nepenthes ampullaria Jack, Nepenthes gracilis Korthals, Nepenthes hookeriana Lindley, Nepenthes rafflesiana Jack var. subglandulosa Adam and Hafiza var. nova and Nepenthes mirabilis (Loureiro) Druce var. echinostoma (Hook fil) Adam and Wilcock. A dichotomous key to these taxa was given. Nepenthes ampullaria was found from 50 to 150 m. Nepenthes gracilis and Nepenthes rafflesiana var. subglandulosa was recorded at 100 m altitude but absent at 50 m altitude. Nepenthes hookeriana and Nepenthes mirabilis var. echinostoma were confined at altitude 50 m but were absent from altitude 100-150 m. These taxa can easily be identified by their morphological characters. Nepenthes ampullaria differs from the other species by possessing the paniculate inflorescence, bracteolate flowers, having only lower pitchers which is urceolate in shape, the lids sizes are distinctly smaller the mouth of the pitcher, lower lid surface glandless and trifid spurs Nepenthes gracilis differs from the other four taxa by it sessile leaves, leaves base being decurrent into two wings, the stem triangular in shape, inconspicuous peristome teeth, very thin peristome (≤1 mm) and inner surface of pitcher wall covered with exposed digestive glands. Nepenthes hookeriana differs from Nepenthes ampullaria by the present of both upper and lower pitchers in the former species and the absence of upper pitcher in the later species. Nepenthes hookeriana differs from Nepenthes gracilis by its cylindrical upper stem, infundibulate upper pitcher and inner pitcher cavity of both upper and lower pitchers covered with digestive glands; Nepenthes hookeriana can be distinguished from Nepenthes rafflesiana var. subglandulosa, Nepenthes mirabilis var. echinostoma by possessing inner pitcher cavity wall wholly covered with digestive glands and lower lid surface sparsely covered with honey glands. Nepenthes mirabilis var echinostoma strikingly differs from the other four taxa in having flattened and very thick peristome and the upper pitcher shape differentiate into tubulose upper half and infundibulate lower half.
 
 
 
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