Norhayati Ahmad

Norhayati Ahmad
Universiti Kebangsaan Malaysia | ukm · School of Earth Sciences and Environment

Doctor of Philosophy

About

130
Publications
72,304
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
2,128
Citations
Introduction
Norhayati Ahmad currently works at the School of Environmental and Natural Resource Sciences, Universiti Kebangsaan Malaysia. Norhayati does research in Zoology. Her current projects are 'urban biodiversity and geopark development'.

Publications

Publications (130)
Article
Full-text available
We review the status, patterns, and progress of Malaysia's amphibian research in the 21 st century (2000-2021) with the main goal of identifying areas for improvement that can help focus and prioritise future research initiatives. Between the period of January 2000-September 2021, we found 280 publications that can be broadly grouped into five cate...
Article
Full-text available
Convergence in communication appears rare compared with other forms of adaptation. This is puzzling, given communication is acutely dependent on the environment and expected to converge in form when animals communicate in similar habitats. We uncover deep‐time convergence in territorial communication between two groups of tropical lizards separated...
Article
An assessment study was conducted for reptile assemblages at Hulu Terengganu Hydroelectric Project (HTHEP) and Sg. Deka. The HTHEP represented the disturbed secondary forest, a recently logged forest for the hydro-dam project, whereas Sg. Deka represented the undisturbed regenerating forest logged about 30 years ago, which is also a wildlife reserv...
Article
Full-text available
The district of Mersing is bestowed with many national and international geological heritage sites dated since 350 million years ago. The high biodiversity and uniqueness of the local culture complements the geoheritage of the area. Thus, the National Geopark Committee has chosen Mersing as a territory to be developed as a geopark. Mersing Geopark...
Preprint
Full-text available
We review the status, patterns, and progress of Peninsular Malaysia’s amphibian research in the 21st century with the main goal of identifying areas for improvement that can help focus and prioritize future research initiatives. Between 2000–2020 we found 130 publications that can be broadly categorized into four groups: 1) checklists and biodivers...
Article
Idanre area which is situated within the Nigerian shield is affected by orogenic activities accompanied by emplacement of Pan-African granitoids. This paper presents a new information on geochemical behaviour of Rare Earth Elements (REEs) and High Field Strength Elements (HFSEs) Zr-Hf and Y-Ho that can explain post magmatic processes relating to th...
Chapter
Human population growth and rapid development in Malaysia have created a rising demand for power. In order to meet this demand, hydropower has been identified as an alternative energy source due to the suitability of the climate and topography. The development of a hydroelectric dam, however, could impact natural habitats and their components, incl...
Chapter
Amphibian communities were assessed in streams of primary and secondary forests in Taman Rimba Kenong, Pahang, between 16 and 22nd August 2004. The objective of this study was to record the species richness and diversity of amphibians. The aim of this study was to build a database to assist in the management of the park, especially for the Forestry...
Article
Full-text available
An updated checklist of the herpetofauna on Pulau Pangkor from surveys conducted between 16-21 July 2017 includes 66 species of herpetofauna, comprising 16 species of amphibians and 50 species of reptiles. Eight species are new records for Pulau Pangkor, namely Microhyla fissipes, Hylarana erythraea, and Polypedates discantus, Calotes emma, Gekko G...
Article
Full-text available
An updated checklist of the herpetofauna on Pulau Pangkor from surveys conducted between 16-21 July 2017 includes 66 species of herpetofauna, comprising 16 species of amphibians and 50 species of reptiles. Eight species are new records for Pulau Pangkor, namely Microhyla fissipes, Hylarana erythraea, and Polypedates discantus, Calotes emma, Gekko G...
Article
Full-text available
A study on amphibian community at Gunung Raya, Pulau Langkawi was conducted in order to identify amphibian species richness and species distribution pattern along an elevation gradient. Species richness and distribution pattern of amphibians along an elevational gradient could explain factors that determine ecological processes in a particular high...
Article
Full-text available
An integrative taxonomic analysis reveals a remarkable degree of cryptic speciation between sympatric, specialized, leaf-litter species in an upland clade of the scincid genus Tytthoscincus across the sky-island archipelago of Peninsular Malaysia. Bayesian inference and maximum likelihood phylogenies based on the mitochondrial gene ND2 indicate tha...
Article
Full-text available
A species checklist of the herpetofauna in Tembat Forest Reserve (TFR), Hulu Terengganu is presented. This checklist includes 25 amphibians and 30 reptile species. An additional two amphibians and 11 reptile species were observed for which there are no voucher specimens. This provides a total list of 67 amphibian and 107 reptile species in Terengga...
Conference Paper
Communicating geopark among the undergraduate students poses a challenge to simplify a progressive knowledge. This article elaborates on the processes involved in communicating geopark effectively among the undergraduate students. This case study is based on an intensive three-week summer course programme called, `Sustainability of Tropical Heritag...
Article
Full-text available
There are many factors that affect signal design, including the need for rapid signal detection and the ability to identify the signal as conspecific. Understanding these different sources of selection on signal design is essential to explain the evolution of both signal complexity and signal diversity. We assessed the relative importance of detect...
Article
Phylogenetic relationships within the genus Leptolalax have been insuiciently resolved, while the relationships of a related genus Leptobrachella with other genera are totally unknown. In order to improve these situations, we assessed the phylogenetic relationships among 19 species of Leptolalax and four species of Leptobrachella based on 2067-2527...
Article
Full-text available
Microhabitats play an important role as resources that are partitioned between phylogenetically related or ecologically similar species (i.e., a guild). This hypothesis was tested by first elucidating phylogenetically closed Sarawak frog species via DNA sequencing of the 16S rRNA mitochondrial DNA gene, and later determining their microhabitat guil...
Conference Paper
Full-text available
A study was done to compare amphibian species composition and richness between a disturbed forest due to logging/dam construction and a 30-year old logged forest at Hulu Terengganu, Peninsular Malaysia. This study was conducted from August to October 2014, using drift fenced-pitfall traps. The upstream (UP) and downstream riverine area (DP) of a da...
Conference Paper
An inventory of herpetofauna was conducted on Gunung Raya, Pulau Langkawi, Kedah, Peninsular Malaysia from February 2014 to January 2015 to evaluate species diversity in order to: 1) determine the diversity of herpetofauna, 2) determine conservation status of rare or new species, and 3) provide preliminary data that may be used for future conservat...
Conference Paper
Full-text available
Anurans on Langkawi Island, Peninsular Malaysia exhibit variation in their habits and forms, ranging from small (SVL < 25 mm) to large (SVL > 150 mm), and occupy a range of habitats, such as riverine forests, agricultural fields, peat swamps, and lowland and upland dipterocarp forests. These variations provide a platform to explore species diversit...
Article
Full-text available
Recently discovered populations of skinks of the genus Sphenomorphus from central Peninsular Malaysia represent a new species, S. sungaicolus sp. nov., and the first riparian skink known from Peninsular Malaysia. Morphological analyses of an earlier specimen reported as S. tersus from the Forest Research Institute of Malaysia (FRIM), Selangor indic...
Article
Full-text available
Bird species assessment has been carried out in the Bangi Forest Reserve from 1980s to 1990s. This forest has undergone a series of fragmentation and shrinkage from 1970 until today. This study is aimed to determine the species richness and turnover rate of bird population in this fragmented forest for the last 30 years. Mist netting method was use...
Article
Full-text available
Sexual ornamentation needs to be conspicuous to be effective in attracting potential mates and defending territories and indeed, a multitude of ways exist to achieve this. Two principal mechanisms for increasing conspicuousness are to increase the ornament's colour or brightness contrast against the background and to increase the size of the orname...
Data
There are many factors that affect signal design, including the need for rapid signal detection and the ability to identify the signal as conspecific. Understanding these different sources of selection on signal design is essential to explain the evolution of both signal complexity and signal diversity. We assessed the relative importance of detect...
Article
Full-text available
A new, diminutive species of Rock Gecko Cnemaspis mahsuriae sp. nov. of the affinis group, is described from Gunung Raya on Pulau Langkawi, Kedah, Peninsular Malaysia and is differentiated from all other species in the affinis group by having a unique combination of characters including a maximum SVL of 36.6 mm; keeled subtibials and ventrals; 21-2...
Article
On the Ground • Information on seasonal trends in quantity and quality of available forage for the goitered gazelle may be useful to wildlife managers in developing management practices to maintain healthy populations and reduce the consumption of toxic plants by protected wildlife. • Goitered gazelles in Golestan National Park in Iran relied on a...
Article
Full-text available
This article presents an overview of the identity and biology of the venomous terrestrial snakes of Malaysia, from Peninsular Malaysia and the Bornean states of Sabah and Sarawak. Two families account for a majority of venomous snakes that are of medical significance – the Elapidae (cobras, kraits, and coral snakes) and Viperidae (vipers and pit vi...
Article
Full-text available
Recent global amphibian declines have emphasized the need for long-term, large scale monitoring programmes. Many factors have to be considered, including robust spatial sampling, duration and detectability when designing for such monitoring programmes. In this study, both active and passive sampling methods were used to increase detectability of an...
Article
Full-text available
Taxonomic status of fanged frogs from the Peninsular Malaysia, previously assigned to Limnonectes kuhlii, is assessed using genetic and morphological approaches. Phylogenetic relationships inferred from sequences of the mitochondrial and nuclear genes revealed that the fanged frogs from the Peninsula form a monophyletic group and are clearly diverg...
Article
Full-text available
A well-supported and well-resolved phylogeny based on a concatenated data set from one mitochondrial and two nuclear genes, six morphological characters, and nine color pattern characters for 44 of the 50 species of the Southeast Asian Rock Geckos (genus Cnemaspis Strauch, 1887) is consistent with the previous taxonomy of Cnemaspis based solely on...
Article
Full-text available
We describe a new species of ranid frog from the Hylarana signata complex in Peninsular Malaysia based on morphological and genetic differentiation. The new species can be distinguished from its congeners by the following combination of characters: (1) adult males reaching 37.4–37.6 mm snout–vent length; (2) nuptial pads absent in males; (3) humera...
Article
Full-text available
Effective management and conservation of wildlife populations and their habitats depend on understanding and predicting species-habitat interaction. The distribution of Persian gazelles, which is related to habitat structure and dispersal of food resources, has been studied by clearance transect pellet group counts during different seasons. This st...
Article
Full-text available
The large scale expansion of oil palm plantations nowadays bring huge negative impact on habitat destruction and loss of biodiversity, especially at Pasoh, Negeri Sembilan, Peninsular Malaysia. The monoculture system that was developed since the 1970s has suppressed biodiversity levels because of the lack of suitable microhabitats. In order to asse...
Article
Full-text available
A revised and updated checklist of the herpetofauna of the Krau Wildlife Reserve (KWR), Pahang is presented, which includes 61 species of amphibians and 65 species of reptiles. Five species of amphibians are listed under revised names i.e. Hylarana labialis, H. picturata, Ansonia latiffi, Microhyla mantheyi and Rhacophorus norhayatae; and two speci...
Chapter
Full-text available
TexT & images by Wan Juliana W.a., muhamad Razali salam, ehWan ngadi, Faizi zulkiFli, azmil Razak, Mohd-aRRabe'a.b., abdul Ghani hussain, noRhayati ahMad and a. latiff Langkawi Geopark was endorsed as a member of the Global Geopark Network under the United Nations Educational, Scientific and Cultural Organisation (UNESCO) in June 2007, and is Malay...
Article
Full-text available
Agriculturally altered vegetation, especially oil-palm plantations, is rapidly increasing in Southeast Asia. Low species diversity is associated with this commodity, but data on anuran diversity in oil-palm plantations are lacking. We investigated how anuran biological diversity differs between forest and oil-palm plantation, and whether observed d...
Article
Full-text available
A review of the taxonomic status of the Asian Slug Snake, Asthenodipsas vertebralis (Boulenger, 1900) based on an integrative taxonomic approach using molecular, morphological, color pattern, and ecological data indicate it is composed of three well supported monophyletic lineages: (1) Pulau Tioman and Fraser's Hill, Pahang and Bukit Larut, Perak;...
Article
Full-text available
A review of the taxonomic status of the Bent-toed Gecko Cyrtodactylus quadrivirgatus Taylor, 1962 based on a molecular phylogeny, scalation, and color pattern analyses indicate that it is composed of a single, recently expanding, widespread population with weakly supported phylogeographic substructuring with no discrete morphological differentiatio...
Article
Full-text available
An integrative taxonomic analysis using color pattern, morphology and 1497 base pairs of the ND2 mitochondrial gene and its five flanking tRNAs demonstrated that nine monophyletic species-level lineages occur within the Cyrtodactylus pulchellus complex (C. pulchellus sensu stricto and C. macrotuberculatus) of the Thai-Malay Peninsula that have a se...
Article
Full-text available
A review of the taxonomic status of the Bent-toed Gecko Cyrtodactylus quadrivirgatus Taylor, 1962 based on a molecular phylogeny, scalation, and color pattern analyses indicate that it is composed of a single, recently expanding, widespread population with weakly supported phylogeographic substructuring with no discrete morphological differentiatio...
Article
Full-text available
Kuraishi, N., Matsui, M., Hamidy, A., Belabut, D. M., Ahmad, N., Panha, S., Sudin, A., Yong, H. S., Jiang, J.-P., Ota, H., Thong, H. T. & Nishikawa, K. (2012). Phylogenetic and taxonomic relationships of the Polypedates leucomystax complex (Amphibia). —Zoologica Scripta, 42, 54–70. We investigated the phylogenetic and taxonomic relationships and es...
Article
Full-text available
We investigated the phylogenetic relationships and estimated the history of species diversification and character evolution in two ichthyophiid genera: Caudacaecilia and Ichthyophis. We estimated the phylogenetic relationships of 67 samples from 33 localities in Southeast Asia from 3840-bp sequences of the mitochondrial 12S rRNA, 16S rRNA, and cyt...
Article
Full-text available
An analysis of Lee Grismer's brilliant opus 'Lizards of Peninsular Malaysia, Singapore and their adjacent archipelagos' is made. Localities were not given by the author for some photographs, and were added in our book review, based on personal communications by Grismer (for the species Cyrtodactylus consobrinus, Gekko smithii, Eutropis multifasciat...
Data
Full-text available
A number of collections on fish fauna were conducted in Langkawi island with earliest by Tweedie (1936) and most recent by Izzati and Samat (2010). Forty-one fish species are known from the streams of the island out of which 24 species are considered primary freshwater fishes including three introduced species (Oreochromis mossambicus, Carassius au...
Article
Full-text available
Langkawi Geopark was bestowed the status of a global geopark by the Global Geoparks Network (GGN) and endorsed by the UNESCO as the 52nd member of the GGN in 2007, making it the first in Malaysia and South East Asia to be given the status. The status is due to its many unique and significant geological, biological, and cultural features in Langkawi...
Article
Langkawi Geopark was bestowed the status of a global geopark by the Global Geoparks Network (GGN) and endorsed by the UNESCO as the 52nd member of the GGN in 2007, making it the first in Malaysia and South East Asia to be given the status. The status is due to its many unique and significant geological, biological, and cultural features in Langkawi...
Data
Full-text available
Time trees from calibration A and D. Time trees from the calibration A and D are shown.
Data
Estimated ages from calculations A-F. Detailed estimated ages from the calibrations A-F are written in tabular form.
Data
Full-text available
Time trees from calibrations H and J. Time trees from the calibration H and J are shown.
Data