Slow recovery of a secondary tropical forest in Southeast Asia

2013 ◽  
Vol 308 ◽  
pp. 153-160 ◽  
Author(s):  
Siew Chin Chua ◽  
Benjamin S. Ramage ◽  
Kang Min Ngo ◽  
Matthew D. Potts ◽  
Shawn K.Y. Lum
Author(s):  
Syafitri Hidayati ◽  
Ervizal A.M. Zuhud ◽  
Ivan Khofian Adiyaksa ◽  
Primadhika Al Manar

Eurycoma longifolia (EL) is a species that have economical benefit as medicinal ingredients for human health. This species grows in tropical forest areas with high rainfall. Research on the ecology of EL has been done a lot, but research related to ethnotaxonomic, bioecology that includes morphology, ecology, and the association of EL with other plants hasn’t been done much. This study aim to analyze the bioecology of EL plant. The method is literature study, which is looking for literature on the results of research that has been carried out related to EL. The results showed that EL has long been known by the communities of Indonesia and other countries in Southeast Asia with several local names. This plant is also associated with other plants around where it grows, one of which is kempas (Koompassia malaccensis). Based on the results of literature review, research on natural regeneration of EL hasn’t been done much. Therefore, there is a need for research related to the natural regeneration of EL. In addition, it is necessary to conduct research related to the characteristics of the place to grow for optimal cultivation of EL. Thus, the preservation of EL in the future can be maintained.


1991 ◽  
Vol 21 (1) ◽  
pp. 132-142 ◽  
Author(s):  
R. A. Houghton

The net annual flux of carbon from south and southeast Asia as a result of changes in the area of forests was calculated for the period 1850 to 1985. The total net flux ranged from 14.4 to 24.0 Pg of carbon, depending on the estimates of biomass used in the calculations. High estimates of biomass, based on direct measurement of a few stands, and low estimates of biomass, based on volumes of merchantable wood surveyed over large areas, differ by a factor of almost 2. These and previous estimates of the release of carbon from terrestrial ecosystems to the atmosphere have been based on changes in the area of forests, or rates of deforestation. Recent studies have shown, however, that the loss of carbon from forests in tropical Asia is greater than would be expected on the basis of deforestation alone. This loss of carbon from within forests (degradation) also releases carbon to the atmosphere when the products removed from the forest burn or decay. Thus, degradation should be included in analyses of the net flux of carbon from terrestrial ecosystems. Degradation may also explain some of the difference between estimates of tropical forest biomass if the higher estimates are based on undisturbed forests and the lower estimates are more representative of the region. The implication of degradation for estimates of the release of carbon from terrestrial ecosystems is explored. When degradation was included in the analyses, the net flux of carbon between 1850 and 1985 was 30.2 Pg of carbon, about 25% above that calculated on the basis of deforestation alone (with high estimates of biomass), and about 110% above that calculated with low estimates of biomass. Thus, lower estimates of biomass for contemporary tropical forests do not necessarily result in lower estimates of flux.


2021 ◽  
Author(s):  
Rizky Nazarreta ◽  
◽  
Damayanti Buchori ◽  
Yoshiaki Hashimoto ◽  
Purnama Hidayat ◽  
...  

Ants are tiny creatures that are often overlooked in our everyday lives. Yet, there are more than 15.000 species of ants on Earth, and their total biomass is higher than that of all humans combined. They invented agriculture more than 50 million years ago, turn more soil than earthworms, can lift 5,000 times their bod weight, and can form supercolonies that span across continents. With the third largest tropical forest in the world, Indonesia is home to thousands of ant species, many of them unknown to science. This book documents more than 300 ant species that were found in rainforests and agroforestry of Jambi Province, Sumatra, and includes a recently updated Identification Key to the ant genera of Southeast Asia. Studying this book will bring you closer to our planet’s fascinating diversity, and the little things that run our world. This book will be a great starting point for those who want to know more about the ants of Southeast Asia, as well as a valuable resource for scientists and students studying ants this part of the world. All in all, this book is a compendium of the ants of Jambi, Sumatra, and embodies a starting point for further ant research in Indonesia.


2012 ◽  
Vol 152 ◽  
pp. 136-144 ◽  
Author(s):  
Graeme R. Gillespie ◽  
Eddie Ahmad ◽  
Berjaya Elahan ◽  
Alice Evans ◽  
Marc Ancrenaz ◽  
...  

1999 ◽  
Vol 20 (18) ◽  
pp. 3625-3640 ◽  
Author(s):  
D. S. Kimes ◽  
R. F. Nelson ◽  
W. A. Salas ◽  
D. L. Skole

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