I. Asmida

Universiti Teknologi MARA | UiTM · School of Biology

The increasing concentration of CO₂ in the atmosphere has caused significant environmental changes, particularly to the lower plants such as terrestrial algae and lichens that alter species composition, and therefore can contribute to changes in community landscape. A study to understand how increased CO₂ in the atmosphere will affect algal density...

Ammonia has been regarded as one of the most important atmospheric pollutants which contribute to the changing ecosystems. A study on the effect of increased concentrations of ammonia (NH3) and other nitrogenous gases (NO2, NOx and NO) in intensive livestock farm was conducted to understand the dynamics of epiphytic microalgae exposed to the pollut...

Epiphytic terrestrial green algae are normally favoured by an environment with higher pH level. Air pollution in the atmosphere contributes to altering the bark pH and provides a better medium for algal growth. High absorption capacity of the microalgae makes it easy to accumulate atmospheric pollutants in their cells immediately. Habitats of epiph...

Air pollution released to the atmosphere due to anthropogenic source particularly of motor vehicles creates emissions that significantly affect not living organisms. Epiphytic terrestrial algae were known to have a tendency towards atmospheric gases due to its high sorption capability. Besides the pollutant, the different texture of the bark of the...

Roadside trees are distinct component of urban forests, providing benefits to reduce radiation heat and air pollution. However, urban settlements due to overpopulation might affect the abundance of roadside trees. Hence, this study was conducted to assess the species richness and diversity of roadside trees in Shah Alam. All trees with 1-metre heig...

This book describes: 1) The species of wildlife in Peninsular Malaysia that feed on plants 2) The type of plants consumed by wildlife in Peninsular Malaysia 3) Cultivation of selected food plants 4) Habitat re-enrichment and replantation of selected plants.

The forested area around Kuala Keniam is a part of Taman Negara (Pahang) and is categorized as a primary lowland dipterocarp, riparian fringe and limestone forests. A study of flora that focuses on the trees and shrubs was conducted during the scientific expedition in September 2020, organised by Universiti Teknologi MARA (UiTM). The results identi...

Microalgae are unicellular microorganisms with unique features and can be used as indicators for air pollutants. Microalgae have been found to withstand the negative effects of air pollutants. This study examined the relationship between the levels of carbon monoxide (CO) and the density of microalgal cells in different areas in Peninsular Malaysia...

Merambong Island has a diverse assemblage of marine organisms; however, reclamation activity has changed the nature of the island. Hence, this research was conducted to provide the latest inventory of algae throughout a 12-month assessment with correlations to their specific habitats namely sandy, rocky, muddy, and mangrove. The single line transec...

Buku berjudul Rumpai Laut Johor adalah buku rujukan lengkap yang mempamerkan kepelbagaian dan taburan rumpai laut di pantai sekitar negeri Johor. Buku seumpama ini pertama kali diterbitkan yang menumpukan sumber rumpai laut di Negeri Johor khususnya. Penerangan ciri-ciri morfologi rumpai laut beserta gambar disediakan sebagai rujukan bagi mengenalp...

Sargassum is a common seaweed in Malaysian waters, well-known for its economic and ethnobotanical values. The study was conducted to screen the presence and diversity of endophytic fungi isolated from Sargassum oligocystum, S. paniculatum and S. polycystum. The hosts were collected from several coastal areas in Johor, Malaysia. The specimens were c...

ABSTRAK Kepelbagaian kulat endofit dalam Ulva lactuca telah dilaporkan di kawasan subtropika. Namun begitu ianya belum pernah dilaporkan di Malaysia. Justeru itu, kajian ini bertujuan untuk mengkaji kepelbagaian kulat endofit pada Ulva lactuca yang diperoleh daripada pantai berbatu dan paya bakau di perairan Johor iaitu Pengerang dan Nusajaya. Seca...

Pengetahuan mengenai kepelbagaian kulat endofit terutamanya dalam rumpai laut jarang dikaji dan terhad. Kepelbagaian kulat endofit dalam Ulva lactuca telah dilaporkan di kawasan subtropika, namun, belum pernah dilaporkan di Malaysia. Justeru itu, kajian ini bertujuan untuk mengkaji kepelbagaian kulat endofit dalam Ulva lactuca daripada pantai berba...

The taxonomy of Halimeda in Malaysia is rarely studied due to the complexity of identification resulting from the high morphological variation within individual species. Currently the diversity and distribution of Halimeda is studied. Halimeda and seawater were collected, and the specimens were preserved and identified, include the preparation of t...

Temporal study of seaweeds was carried out between on February 2015 and November 2015 at Kampung Jawa Darat and Kampung Sungai Buntu at Pengerang, Johor, Malaysia. The research objectives were to study the diversity of seaweed and to determine the presence of fungal endophyte in the seaweed. The diversity of seaweed in the sampling site was calcula...

This study focuses on the characterization of pigment compounds presence in Sargassum sp. extracts. The ground powder of dry Sargassum sp. was macerated in in methanol solution at 60°C for 48 hours in an aluminium foil-wrapped conical flask (to provide the dark environment). The extracted colourant was measured with UV-vis Spectrophotometer and Q-T...

Acid rain is liquid precipitations with pH lower than 5.6 which contain harmful elements such sulfur dioxide, nitrogen oxides, nitric and carbon dioxides. The increasing trend of acid precipitation imposed a negative impact on ecosystem, including lower plants such as algae. In this study, acid precipitation was simulated in accordance to natural a...

Pulau Tioman is one of the popular tourism islands in Malaysia and was gazetted as Marine Park in 1995 to protect the valuable marine resources. Nowadays, species compositions of seaweed are decreasing gradually due to the major environmental disturbance. Thus, due to the concerning on the availability of the seaweeds, the assessment was employed f...

This research was conducted to study the biodiversity status of marine macroalgae (seaweeds) in Blue Lagoon, Port Dickson and assess the changes in species composition in the area. The sampling site is located in the west coast of Peninsular Malaysia, which has been regarded as one of the Malaysia's popular beach resort destinations. This tourist s...

Nowadays, the demand for natural dyes is increasing due to the fact that they are less toxic and more environmental friendly. In this study, natural dyes from C. lentillifera and Sargassum sp. seaweeds were extracted using boiling water extraction methods. Exhaustion dyeing was then performed on silk fabrics at 85°C for 60 minutes with simultaneous...

This study focuses on the surface modification of cotton and silk fabrics which might improve their dyeability to Sargassum sp. extracts. The extraction was performed by macerating the Sargassum sp. powder in methanol solution at 60 0 C for 48 hours in dark room. The extracted colourant was measured with UV-vis Spectrophotometer to analyse the peak...

This study focuses on the surface modification of cotton and silk fabrics which might improve their dyeability to Sargassum sp. extracts. The extraction was performed by macerating the Sargassum sp. powder in methanol solution at 600C for 48 hours in dark room. The extracted colourant was measured with UV-vis Spectrophotometer to analyse the peak a...

Objective: The present study was conducted to evaluate the anti-pyretic activity of Caulerpa lentillifera, Hibiscus rosa-sinensis, and Piper sarmentosum aqueous extracts. Methods: The suspension of yeast was injected intraperitoneally (0.1 g/kg of bodyweight [BWT]) to induce fever in experimental animals. Rectal temperature was recorded every hour...

Two lichens species (Parmotrema praesorediosum and Heterodermia leucomelos) were assessed for dye production using boiling water method (BWM) and ammonia fermentation method (AFM). The dyes were applied on silk fabric. Three types of mordant were used i.e. alum, iron and vinegar through meta-chrome (simultaneous) method of natural dyeing. The K/S v...

A study on abundance and diversity of Hymenoptera was conducted in Hutan Simpan UiTM Jengka Kem Sri Gading to determine the relationship of diversity of Hymenoptera with the environmental gradient. The samplings were conducted from November 2013 to April 2014 using Malaise traps. Three malaise traps were installed at the forest fringe and another t...

Epiphytic terrestrial green algae normally favour an environment with higher p H level. Air pollution in the atmosphere contribute to alter the bark pH and provides a better mediu m for algal growth. High sorption capacity of the microalgae makes it easy to accumulate atmospheric pollutants in their cells immediately. Habitats of epiphytic terrestr...

Green algae are diverse and ubiquitous in aquatic and some terrestrial habitats. They play a vital role in the global ecosystems for hundreds of millions of years. Differences between trees in bark topography can cause different epiphytic variation in community composition. The objectives of this research was to assess the response of number of alg...

Seaweeds (macroalgae) monitoring work which involved biodiversity study was carried out to identify species richness and its composition in the tropical coastal area of Blue Lagoon, Port Dickson, Malaysia. Methods used in this study were quadrat sampling method based on line transect and specimens collection. Nine species of algae was recorded in t...

Community structure of tropical forest floor vegetation has been conducted in Tasik Chini Forest Reserve, Pahang, Malaysia. This study helped in understanding the diversity and distribution of vegetation of three zones namely the riparian zone, the middle zone and the open zone. The objectives of this study was to quantify and to determine the dist...

Terrestrial algae, one of the many important living things for the earth’s ecosystem are abundant in large spectrum such as on tree barks, stones, walls and plastics. The objectives of this research were to assess the effect of shading towards the number of algal cells inhabiting 30 free standing trees. Besides that this study also looks into the n...

The aims of this study were to determine the capability of Eucheuma cottonii to improve spermquality and to reduce lead accumulation in organs of rats exposed to lead. SpragueDawley rats (n=24)were randomly assigned to four groups. GroupAserved as a control and receivedmaintenance diet, Group B received maintenance diet and supplemented with 500 mg...

Synthetic dyes are toxic and harmful to the living things. Therefore, the demand for natural dyes is emerging globally due to the fact that they are safer and more environmental friendly, and thus, the application of natural dyes should be considered as a better alterna- tive to synthetic dyes. Using natural dyes contributes to the acceptability of...

This research focuses on the extraction of natural dyes from red, green and brown strains of Kappaphycus alvarezii for textile colourant. The green, brown and red strains of Kappaphycus alvarezii seaweeds were extracted using boiling water and microwaveassisted extraction methods. The extracted colourant was measured with UV–Vis spectrophotometer t...

This research work was conducted to study the taxonomy of marine macroalgae (seaweeds) in Blue Lagoon, Port Dickson. A 300 m transect line was laid vertically to the shoreline to enable observations and specimens collection. Percentage cover of seaweeds in these quadrats was estimated, images were captured and specimens were collected. The taxonomy...

The diversity of tree species can be used as an indicator to a successful community because different species have different contribution to the forest ecosystem. The goal of this study was to quantify the diversity of tree species at different elevations by measuring trees in two 20m × 20m plots that was subdivided into four 10 m × 10 m each which...