Long-term CO2 production from deeply weathered soils of a tropical rain forest: evidence for a potential positive feedback to climate warming

2006 ◽  
Vol 12 (10) ◽  
pp. 1878-1893 ◽  
Author(s):  
LUITGARD SCHWENDENMANN ◽  
EDZO VELDKAMP
Biotropica ◽  
2003 ◽  
Vol 35 (3) ◽  
pp. 306-317 ◽  
Author(s):  
Esther Fichtler ◽  
Deborah A. Clark ◽  
Martin Worbes

Ecology ◽  
2000 ◽  
Vol 81 (2) ◽  
pp. 585-597 ◽  
Author(s):  
Stanley R. Herwitz ◽  
Robert E. Slye ◽  
Stephen M. Turton

1977 ◽  
Vol 4 (2) ◽  
pp. 121-129 ◽  
Author(s):  
David Lamb

Large areas of Papua New Guinea are covered by tropical rain-forest, but national and local pressures for development are causing increasing areas to be cleared for agriculture or logged for timber. Despite concern by conservation-minded land managers, a number of constraints make planning for the rational use of these resources rather difficult.The problems encountered are mainly sociological rather than ecological. Thus while landowners are willing or eager to sell the rights to harvest the timber on their land, they are unwilling to commit the land to any long-term land-use, whether this be as managed forest, national park, or wildlife reserve. The problem is compounded by the complicated system of land tenure and the fact that several language-groups may commonly be found within even a small area.The Gogol Timber Project at Madang illustrates some of these difficulties and the attempts that are being made to overcome them.


1993 ◽  
Vol 9 (2) ◽  
pp. 131-151 ◽  
Author(s):  
T. C. Whitmore ◽  
N. D. Brown ◽  
M. D. Swaine ◽  
D. Kennedy ◽  
C. I. Goodwin-Bailey ◽  
...  

ABSTRACTStudy of forest dynamics commonly requires measurement of canopy gap size. Hemispherical photographs can be analysed to provide various measures whereby gaps can be ranked in order of size. For ten artificial gaps in a Bornean tropical rain forest these measures were better correlated with gap microclimate than gap area measured physically on the ground. All these measures are however relative. For detailed (e.g. ecophysiological) studies the greater detail provided by absolute measures of photosynthetically active radiation (PAR) are required. Long term PAR values can be computed from hemiphots so long as measurements in the open nearby are available. Correction for cloudy weather is essential. Computed and measured PAR are compared for the test gaps. Both have inherent limits which means that below c. 15% canopy openness, differences in PAR between gaps cannot be assessed accurately.


2019 ◽  
Vol 219 ◽  
pp. 140-152 ◽  
Author(s):  
Yining Ma ◽  
Jinyuan Xin ◽  
Wenyu Zhang ◽  
Zirui Liu ◽  
Yongjing Ma ◽  
...  

1984 ◽  
Vol 21 (2) ◽  
pp. 720
Author(s):  
E. Broadhead ◽  
Egbert G. Leigh ◽  
A. S. Rand ◽  
D. M. Windsor

Ecology ◽  
2014 ◽  
Vol 95 (8) ◽  
pp. 2362-000 ◽  
Author(s):  
Matt G. Bradford ◽  
Helen T. Murphy ◽  
Andrew J. Ford ◽  
Dominic L. Hogan ◽  
Daniel J. Metcalfe

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