scholarly journals Assessing Soil Biological Properties of Natural and Planted Forests in the Malaysian Tropical Lowland Dipterocarp Forest

2011 ◽  
Vol 8 (9) ◽  
pp. 854-859 ◽  
Author(s):  
Karam
Keyword(s):  
Biological Properties ◽  
Planted Forests ◽  
Dipterocarp Forest ◽  
Tropical Lowland ◽  
Soil Biological Properties ◽  
Lowland Dipterocarp Forest

The meathop wood and the pasoh rainforest projects

1976 ◽  
Vol 274 (934) ◽  
pp. 283-294 ◽  
Keyword(s):  
Technical College ◽  
Flow Diagram ◽  
Nature Conservancy ◽  
Dipterocarp Forest ◽  
Tropical Lowland ◽  
Run Off ◽  
Radiation Rate ◽  
Rate Of Photosynthesis ◽  
Lowland Dipterocarp Forest ◽  
Detailed Work

The Meathop Wood Project involved the study of a deciduous broad-leafed forest in Lancashire and an attempt has been made to obtain an energy balance for the community and to elucidate carbon and mineral cycling. Measurements have been made of radiation, rate of photosynthesis by the major components of the forest and their productivity. The rate of litter fall, sub-divided into the various components such as eaves, bracts, branches, etc., root productivity and the death of the roots and the addition of organic matter to the soil from this source were measured. The decomposition of the soil litter was followed, and the soil populations of the animals, fungi and bacteria were examined. The mineral uptake by various plant species was followed by monitoring the incoming rain, the through-fall in its passage through the leaf canopy, the trunk-flow and run-off and the leaching of the litter and soil. The processes involved have been summarized in a general energy flow diagram for the forest. Because of the detailed work undertaken by members of the Nature Conservancy staff, much of which was begun before the I.B.P. started, it was possible with the aid of additional workers from universities and the Liverpool Technical College to fill many of the gaps in the original work. Similar but less complete studies were made jointly with the I.B.P. Committees of Japan and Malaysia on a virgin tropical lowland dipterocarp forest situated in Negri Sembilan in central Malaya.

Resource use of insect seed predators during general flowering and seeding events in a Bornean dipterocarp rain forest

2003 ◽  
Vol 93 (5) ◽  
pp. 455-466 ◽  
Author(s):  
M. Nakagawa ◽  
T. Itioka ◽  
K. Momose ◽  
T. Yumoto ◽  
F. Komai ◽  
...  
Keyword(s):  
Tropical Forests ◽  
Resource Use ◽  
Predator Species ◽  
Seed Predators ◽  
Dipterocarp Forest ◽  
Tropical Lowland ◽  
General Flowering ◽  
Lowland Dipterocarp Forest ◽  
Insect Predators ◽  
Taxonomic Groups

AbstractInsect seed predators of 24 dipterocarp species (including the genera of Dipterocarpus, Dryobalanops and Shorea) and five species belonging to the Moraceae, Myrtaceae, Celastraceae and Sapotaceae were investigated. In a tropical lowland dipterocarp forest in Sarawak, Malaysia, these trees produced seeds irregularly but intensely during general flowering and seeding events in 1996 and/or 1998. Dipterocarp seeds were preyed on by 51 insect species (11 families), which were roughly classified into three taxonomic groups: smaller moths (Tortricidae, Pyralidae, Crambidae, Immidae, Sesiidae and Cosmopterigidae), scolytids (Scolytidae) and weevils (Curculionidae, Apionidae, Anthribidae, and Attelabidae). Although the host-specificity of invertebrate seed predators has been assumed to be high in tropical forests, it was found that the diet ranges of some insect predators were relatively wide and overlapped one another. Most seed predators that were collected in both study years changed their diets between general flowering and seeding events. The results of cluster analyses, based on the number of adults of each predator species that emerged from 100 seeds of each tree species, suggested that the dominant species was not consistent, alternating between the two years.

Various population fluctuation patterns of light-attracted beetles in a tropical lowland dipterocarp forest in Sarawak

2000 ◽  
Vol 42 (1) ◽  
pp. 97-104 ◽  
Author(s):  
M. Kato ◽  
T. Itioka ◽  
S. Sakai ◽  
K. Momose ◽  
S. Yamane ◽  
...  
Keyword(s):  
Population Fluctuation ◽  
Dipterocarp Forest ◽  
Tropical Lowland ◽  
Lowland Dipterocarp Forest

Decay classes of coarse woody debris in a lowland Dipterocarp forest: implications for volume, density, and carbon estimates

Biotropica ◽  
2021 ◽  
Author(s):  
Ekaterina Shorohova ◽  
Ekaterina Kapitsa ◽  
Andrey Kuznetsov ◽  
Svetlana Kuznetsova ◽  
Valentin Lopes de Gerenuy ◽  
...  
Keyword(s):  
Coarse Woody Debris ◽  
Woody Debris ◽  
Volume Density ◽  
Dipterocarp Forest ◽  
Lowland Dipterocarp Forest

scholarly journals Can mid-infrared (mid-IR) spectroscopy evaluate soil conditions by predicting soil biological properties?

Soil Security ◽  
2021 ◽  
pp. 100008
Author(s):  
Debabrata Nath ◽  
Ranjan Laik ◽  
Vijay Singh Meena ◽  
Biswajit Pramanick ◽  
Santosh Kumar Singh
Keyword(s):  
Ir Spectroscopy ◽  
Biological Properties ◽  
Soil Conditions ◽  
Mid Infrared ◽  
Soil Biological Properties

scholarly journals Earthworms as an Ecological Indicator of Soil Recovery after Mechanized Logging Operations in Mixed Beech Forests

Forests ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 18
Author(s):  
Hadi Sohrabi ◽  
Meghdad Jourgholami ◽  
Mohammad Jafari ◽  
Farzam Tavankar ◽  
Rachele Venanzi ◽  
...  
Keyword(s):  
Soil Properties ◽  
Soil Depth ◽  
Biological Properties ◽  
Economic Benefits ◽  
Ecological Indicator ◽  
Traffic Intensity ◽  
Soil Biological Properties ◽  
Density And Biomass ◽  
Soil Recovery ◽  
The Impact

Soil damage caused by logging operations conducted to obtain and maximize economic benefits has been established as having long-term effects on forest soil quality and productivity. However, a comprehensive study of the impact of logging operations on earthworms as a criterion for soil recovery has never been conducted in the Hyrcanian forests of Iran. The aim of this study was to determine the changes in soil biological properties (earthworm density and biomass) and its recovery process under the influence of traffic intensity, slope and soil depth in various intervals according to age after logging operations. Soil properties were compared among abandoned skid trails with different ages (i.e., 3, 10, 20, and 25 years) and an undisturbed area. The results showed that earthworm density and biomass in the high traffic intensity and slope class of 20–30% at the 10–20 cm depth of the soil had the lowest value compared to the other treatments. Twenty-five years after the logging operations, the earthworm density at soil depth of 0–10 and 10–20 cm was 28.4% (0.48 ind. m−2) and 38.6% (0.35 ind. m−2), which were less than those of the undisturbed area, respectively. Meanwhile, the earthworm biomass at a soil depth of 0–10 and 10–20 cm was 30.5% (2.05 mg m−2) and 40.5% (1.54 mg m−2) less than the values of the undisturbed area, respectively. The earthworm density and biomass were positively correlated with total porosity, organic carbon and nitrogen content, while negatively correlated with soil bulk density and C/N ratio. According to the results, 25 years after logging operations, the earthworm density and biomass on the skid trails were recovered, but they were significantly different with the undisturbed area. Therefore, full recovery of soil biological properties (i.e., earthworm density and biomass) takes more than 25 years. The conclusions of our study reveal that the effects of logging operations on soil properties are of great significance, and our understanding of the mechanism of soil change and recovery demand that harvesting operations be extensively and properly implemented.

The consequences of selective logging for Bornean lowland forest birds

1992 ◽  
Vol 335 (1275) ◽  
pp. 443-457 ◽  
Keyword(s):  
Population Dynamics ◽  
Bird Species ◽  
Selective Logging ◽  
Forest Birds ◽  
Primary Forest ◽  
Bird Conservation ◽  
Lowland Forest ◽  
Dipterocarp Forest ◽  
Logged Forest ◽  
Lowland Dipterocarp Forest

In lowland dipterocarp forest in Sabah, Malaysia, most primary forest bird species were present in areas selectively logged eight years previously. However, certain taxa, notably flycatchers, woodpeckers, trogons and wren-babblers, became comparatively rare. In contrast, nectarivorous and opportunistic frugivorous species were significantly more abundant. Few species appeared to change foraging height, but netting rates suggest that the activity of some species had increased, or that some birds ranged over larger areas after logging. Although there is still much to be learned about the survival of birds in logged forest, large areas of this habitat are important for bird conservation. However, the susceptibility of logged forest to fire, and our present incomplete understanding of bird behaviour and population dynamics in logged forests mean that they should not be considered by conservationists as alternatives to reserves of primary forest.

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