SPECIES RICHNESS AND SOIL PROPERTIES IN Nepenthes HABITAT AT BRIS ECOSYSTEM IN SETIU, TERENGGANU

RAWI, NURUL-HANIS ZAHIRAH; Rohani, Shahrudin

doi:10.46754/umtjur.2021.10.007

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…At the end of this period (ca. AD 1780 -1870), the presence of Nepenthes suggests that the swampy environment had become nutrient-poor (Sim et al, 1992;Rawi and Rohani, 2021), which may have contributed to the decline of the SF vegetation in the area due to the different nutritional requirements of the plant species involved.…”

Section: Dynamics Of the Harapan Riparian Forest The Role Of Climate ...mentioning

confidence: 99%

Late Holocene riparian vegetation dynamics, environmental changes, and human impact in the Harapan forest of Sumatra, Indonesia

Nguyen,

Hapsari,

Saad

et al. 2023

Front. Ecol. Evol.

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Riparian wetland ecosystems provide important ecological services but are also vulnerable to climate change and human activities. To understand the influence of natural factors (e.g. climate change, flooding, drought) and human activities (e.g. agriculture) as well as to support management strategies, reconstructions of past vegetation and environmental changes are needed. To achieve this, we conducted a multi-proxy paleoecological analysis, including pollen and spores, macro-charcoal and radiocarbon dating, on a sediment core taken from a riparian area in the Harapan forest of Sumatra. Three distinct periods were identified: i) AD 1100 – 1400: Upland and swamp forest with riparian and herbaceous vegetation, possibly part of a riparian buffer zone (e.g. riverbank), was present in the study area under a stronger dry season regime; ii) AD 1400 – 1870: freshwater swamps expanded to the study site; iii) later, from AD 1870 to present, upland forests dominated in the study area with a strong dry season. The presence of cereal cultivation from AD 1300 – 1450, and oil palm (Elaeis guineensis) since the mid-19th century AD indicates the presence of small-scale agriculture in the study area. This study of riparian vegetation dynamics and environmental changes in the Harapan forest of Sumatra shows the development from a riparian forest to a freshwater swamp and upland forest under the impact of climate change and human activities.

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Section: Dynamics Of the Harapan Riparian Forest The Role Of Climate ...mentioning

confidence: 99%

Late Holocene riparian vegetation dynamics, environmental changes, and human impact in the Harapan forest of Sumatra, Indonesia

Nguyen,

Hapsari,

Saad

et al. 2023

Front. Ecol. Evol.

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Effect of Sintering Temperature on Properties of Setiu Clay Sediments

Nor

Adnen

Noh

et al. 2020

MSF

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The effect of sintering temperature on physical properties of Setiu clay sediment was studied. The ceramic samples were prepared via slip casting method, and sintered at different temperatures ranging from 900 to 1100°C, with 2 hours soaking time. Morphologies of ceramic samples were characterized using Tabletop Microscope. Shrinkage was determined from measurement of samples before and after sintering process. A good ceramic sample without warping or cracks obtained after casting process and after sintered at different temperatures. The results show that sintering temperatures greatly influence morphology of samples. As sintering temperature increased the grain boundaries between particles become smoother and compacted while pores shrunk due to the densification behavior. A considerable increased in shrinkage from 5 to 20% were observed with increasing temperature from 900 to 1100°C. As conclusion, Setiu clay sediment are suitable for production ceramic products and 1000°C can be consider the best sintering temperature in terms of quality of products and production costs.

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The Occurrence of Pteroptyx tener Olivier Firefly (Coleoptera: Lampyridae) in Malaysia

Seri¹,

Rahman²,

Kassim³

et al. 2022

JTAS

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A field survey of synchronized fireflies (Pteroptyx tener Olivier) was conducted in Kuala Sepetang, Perak. It involved sampling efforts for six months, from November 2021 to April 2022. A total of 10 sampling stations were selected along 5.63 km from the upstream to the downstream of the river. A sweep net was used for sampling at each station, and the net was swept for two minutes. Such sampling was replicated twice at each station. At the same time, collecting vegetation samples was done by taking the leaves, flowers, fruits, tree trunks, and roots. For species identification, collected specimens were taken to the Laboratory of the School of Biological Sciences, Universiti Sains Malaysia (USM). From this survey, a total of 111,622 individuals were recorded. This species has been observed on Rhizophora mucronata, Rhizophora apiculata, and Sonneratia caseolaris. The distribution and abundance of fireflies in the sampling area were undocumented prior to this study. This study is being conducted to understand Pteroptys tener’s distribution in Malaysia better and to add knowledge about the undocumented area of Kuala Sepetang. By adding an undocumented location for this species, this study can contribute to and expand the knowledge of the distribution and occurrence of fireflies in Malaysia, particularly in Perak.

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SPECIES RICHNESS AND SOIL PROPERTIES IN Nepenthes HABITAT AT BRIS ECOSYSTEM IN SETIU, TERENGGANU

Cited by 3 publications

References 11 publications

Late Holocene riparian vegetation dynamics, environmental changes, and human impact in the Harapan forest of Sumatra, Indonesia

Late Holocene riparian vegetation dynamics, environmental changes, and human impact in the Harapan forest of Sumatra, Indonesia

Effect of Sintering Temperature on Properties of Setiu Clay Sediments

The Occurrence of Pteroptyx tener Olivier Firefly (Coleoptera: Lampyridae) in Malaysia

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