The Physical Setting

Tjia, H. D.

doi:10.1016/b978-0-08-028866-6.50007-6

Cited by 5 publications

(4 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although some early geologists, including Scrivenor (1911, p. 13) concluded from observations between Kedah and Songkhla, that ‘in recent times the peninsula was an island’, this possibility has received little attention in the recent scientific literature. Nevertheless, the latest reviews of regional geology (Tjia, 1988; Hutchison, 1989) provide some evidence for these marine transgressions and hypothetical seaways. The thick sedimentary deposits in the Gulf of Thailand Basin and the Malay Basin provide strong evidence for a Miocene highstand.…”

Section: Local Geological Evidencementioning

confidence: 99%

“…, 1995). In the southern peninsula, Tjia (1988) described numerous field indicators of +30 m sea stands but ascribes Pleistocene ages to these features and interpreted higher (+75 m) features as either pre‐Quaternary strandlines or features that have been raised isostatically. From central Myanmar there are recent reports of a Miocene highstand (marine flooding from early to middle Miocene) punctuated by at least two short regressions (Khin & Myitta, 1999).…”

Section: Local Geological Evidencementioning

confidence: 99%

See 1 more Smart Citation

Neogene marine transgressions, palaeogeography and biogeographic transitions on the Thai–Malay Peninsula

Woodruff

2003

Journal of Biogeography

212

189

View full text Add to dashboard Cite

Aim The aim of this review is to contribute to our understanding of the origination of the Sundaic and Indochinese biotas in Southeast Asia. Numerous unsolved problems surround the origination of the differences between these biotas and the determinants of the breadth and current position of the transition between them.Location Literature reviews show that phytogeographical and zoogeographical transitions between the Sundaic and Indochinese subregions lie on the Thai-Malay peninsula just north of the Isthmus of Kra. A second, more widely recognized botanical transition lies 500 km further south at the Kangar-Pattani line near the Thai-Malay border.Results The phytogeographical transition involves 575 genera of plants, and a change from wet seasonal evergreen dipterocarp rain forest to moist mixed deciduous forest. The zoogeographical transition is best characterized for forest birds, and more than half the species present in this region have species boundaries north of the Isthmus of Kra, at 11-13°N latitude. Although the phytogeographical transition is climate-related today, and the avifaunal transition is viewed as being associated with the vegetation change, there is no obvious present day geological, physiographical or environmental feature to account for the origination of the provincial biotas. Similarly, known Neogene palaeoenvironmental changes on the tectonically stable peninsula, including those associated with periods of lower sea levels and the emergence of Sundaland, fail to account for either the origination of the provincial differences or the current position of the transition.Main conclusions Contrary to earlier palaeogeographical reconstructions, it is suggested that Neogene marine transgressions flooded the peninsula in two areas and created circumstances leading to the biogeographical patterns of the present day. The Vail global eustatic curve, supported by the oxygen isotope record, indicates that sea levels were c. 100 m above the present-day level during the early/middle Miocene (24-13 Ma) and again during the early Pliocene (5.5-4.5 Ma). Present topography suggests such high sea stands would have created 30-100-km wide seaways north and south of the Nakhon si Thammarat Range in the central peninsula (southern Thailand). Geological, palaeontological and phylogenetic evidence for such hypothetical seaways is scant (there have been no focussed searches) but does not preclude their occurrence. The role of such Neogene highstands in explaining present day biogeographical patterns in Southeast Asia and elsewhere requires assessment.

show abstract

Section: Local Geological Evidencementioning

confidence: 99%

Section: Local Geological Evidencementioning

confidence: 99%

Neogene marine transgressions, palaeogeography and biogeographic transitions on the Thai–Malay Peninsula

Woodruff

2003

Journal of Biogeography

212

189

View full text Add to dashboard Cite

show abstract

“…The study was conducted at the Pasoh Forest Reserve, Negeri Sembilan, Malaysia, where the annual precipitation is at its lowest within West Malaysia (Tjia 1988). These relatively dry conditions are reflected in the termite community with fungus-growing Macrotermitinae being dominant , Collins 1983.…”

Section: Et H Od Smentioning

confidence: 99%

Effects of termite exclusion on decay of heavy and light hardwood in a tropical rain forest of Peninsular Malaysia

Takamura

2001

J. Trop. Ecol.

View full text Add to dashboard Cite

Wood pieces of a heavy hardwood Neobalanocarpus heimii (King) P. S. Ashton and a light hardwood Shorea macroptera Dyer were used in decomposition experiments with termite-exclusion and control trays on the forest floor of the Pasoh Forest Reserve, West Malaysia to determine effects of wood quality on termite-mediated wood decay. Shorea macroptera had a significant loss of C in the presence of termites while Neobalanocarpus heimii showed no significant termite effect. Neobalanocarpus heimii and S. macroptera both accumulated N in the absence of termites, but S. macroptera lost it when termites were present. The C/N ratio decreased with and without termites as decay proceeded in both species. Neobalanocarpus heimii accumulated P, but S. macroptera lost it with and without termites. The C/P ratio decreased in N. heimii, but did not change in S. macroptera. Decomposition was considerably enhanced by termites in S. macroptera, but not in N. heimii, indicating that termite foraging activity was affected by the different wood qualities of the two trees. The qualities responsible for the differences and how different wood qualities affect nutrient cycling in the tropical rain forest ecosystem are discussed.

show abstract

“…Not much is known about the autecology of the species to ascribe any edaphic influence on the morphological structuring of the populations. The ranges are based primarily on granite rock and are in general exposed to relatively little variation in mean annual sunshine and temperature as expected of a low latitudinal warm climate but rainfall distribution is higher in the eastern parts of the peninsula, due to the northeast monsoon where mean annual rainfall may exceed other areas by 1250mm (Tjia, 1988).…”

Section: Discussionmentioning

confidence: 99%

Intraspecific variation in Licuala glabra Griff. (Palmae) in Peninsular Malaysia- a morphometric analysis

Loo

Tan

Kumar

et al. 2001

Biological Journal of the Linnean Society

View full text Add to dashboard Cite

We studied vegetative and reproductive characters of 74 herbarium specimens of Licuala glabra Griff. (Palmae) collected from 22 localities throughout Peninsular Malaysia. To test the null hypothesis that there are no distinct groups within the species, cluster analysis (nearest neighbour), principal coordinates and principal components analyses were performed on the set of 43 qualitative and quantitative characters. The results obtained suggested that: (1) there are three infraspecific groups within the species, viz., the two published varieties glabra and selangorensis as well as a possible third novel taxon; (2) there is clustering of individuals corresponding t o their geographic localities; (3) clusters generated using only reproductive characters indicate a biogeographic distribution of populations correlated with the mountain ranges in the peninsula.

show abstract

The Physical Setting

Cited by 5 publications

References 5 publications

Neogene marine transgressions, palaeogeography and biogeographic transitions on the Thai–Malay Peninsula

Neogene marine transgressions, palaeogeography and biogeographic transitions on the Thai–Malay Peninsula

Effects of termite exclusion on decay of heavy and light hardwood in a tropical rain forest of Peninsular Malaysia

Intraspecific variation in Licuala glabra Griff. (Palmae) in Peninsular Malaysia- a morphometric analysis

Contact Info

Product

Resources

About