1,721,056 research outputs found
THE IMPORTANCE OF FOREST REGENERATION IN PROTECTING ECONOMICALLY IMPORTANT TREE SPECIES
Get PDFBungo Range comprises of both primary forest in the upper
highland and secondary forest in the lower part of the range. The primary forest has been gazetted as a national park on 26 February 2017, but there is very little information on the forest biodiversity on this range. The primary forest is divided into two types namely, kerangas forest (KF) and mixed dipterocarp forest (MDF). KF is also known as the tropical heath forest, which can be literally defined as the ‘land which cannot grow rice’ due to its highly acidic soil. The infertile soil has resulted
in low yield of high-quality timber as compared to the MDF.
The MDF, on the other hand, is mostly dominated by trees from the Dipterocarpaceae family. The Dipterocarpaceae trees yield high quality and expensive timber as compared to other timberproducing trees
WATER QUALITY OF PEDID RIVER AND THE TRIBUTARIES
Get PDFThe river systems flow through the Bungo Range are classified between first to third orders (Figure 4.1). The streams are mostly high gradient, narrow (range: 4.0 – 19.3 m) and shallow with rocky substrates, cool (range: 24.3 – 24.9 oC) and fast flowing water (Figure 4.2A, B, D, G). The selected water parameters i.e., dissolved oxygen and pH recorded from four stations may indicate a good quality that suitable for various usages according to National Water Quality Standard for Malaysia (NWQS) (Tables 4.1, 4.2)
MACROINVERTEBRATES OF PEDID RIVER AND THE TRIBUTARIES
Get PDFThe stream’s drainage of Bungo Range constitutes first to third orders, fast flowing water and rocky substrates. The water of the streams is tea-coloured in appearance during dry period due to tannin contain which is associated with kerangas forest in the catchment. Sg Pedid is the main drainage system in the upstream feed by numerous second and first orders before discharge to Sarawak Kanan River – main basin in Kuching Division
Penganugerahan Ijazah Kehormat Doktor Transfomasi Komuniti Luar Bandar Datuk Patinggi Tan Sri (Dr) Alfred Jabu
Get PDFConservation ecology of Irrawaddy dolphins in estuarine waters of Kuching
Get PDFCetaceans in the nearshore waters of Sarawak have ecological functions and economic importance to the state. Being the keystone species of the ocean, they are valuable as indicators of the health of the environment as they sit on top of the ocean’s food chain. The presence of marine mammals in an area indicate that the fishing stock of the
particular area is still present. In addition to that, the Irrawaddy dolphins also serve as important attraction for the eco-tourism industry within Kuching Bay.
However, populations of the Irrawaddy dolphins throughout South East Asia are facing risk of local extinction due to
anthropogenic factors such as bycatch in fisheries, habitat loss and degradations, decreased fitness from pollutions or
contaminants
A fresh look at shifting cultivation: Fallow length an uncertain indicator of productivity
Get PDFShifting cultivation is practiced by millions of farmers in the tropics and has been accused of causing deforestation and keeping farmers
in poverty. The assumed positive relationship between fallow length and crop yields has long shaped such negative opinions on the
sustainability and environmental impact of the system, as population growth is believed inevitably to lead to its collapse. Empirical evidence
for this assumption is scarce, however, and a better understanding of system dynamics is needed before discarding shifting cultivation
as unsustainable. With cases from Malaysia and Indonesia, we show that fallow length is a weak predictor of crop yields, though
interactions with fertilizer inputs may increase its importance. Other factors such as drought, flooding, and pests are more important
determinants of yields. The implication is that when using natural fallow as the only means of nutrient supply, there is no need to
cut old fallow vegetation. Moreover, there is no evidence of system collapse, even at short fallow periods. We conclude that shifting cultivation
should be accepted as a rational land use system and that earlier calls for bringing a ‘‘Green Revolution’’ to shifting cultivators
are still relevant to achieve intensive and sustainable production
The reptiles of Bungo Range
Get PDFThe proposed Bungo Range National Park, in the Kuching Division of Sarawak, encompasses a total area of 8,095 ha, and comprises a rolling landscape of sandstone ridges and lowland rainforests, hemmed in by tower karst and at present, villages and agricultural land. The range of habitat types encompassed, including the presence of wetlands and several substrate types make the area of potential importance for herpetofaunas
- …
