Management implications of annual growth rings in Pterocarpus angolensis from Zimbabwe

Stahle, David W.; Mushove, P. T.; Cleaveland, Malcolm K.; Roig, Fidel A.; Haynes, G.A

doi:10.1016/s0378-1127(99)00075-4

Cited by 150 publications

(131 citation statements)

References 6 publications

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“…Achieving sustainable yields requires species-specific management of timber resources, in which the different growth strategies of tree species and the varying site conditions are considered. Unfortunately, species-specific and site-specific management criteria based on wood growth data in the tropics are quite rare (Stahle et al 1999;Schwartz et al 2002;Sokpon and Biaou 2002;Nebel and Meilby 2005;Schöngart et al 2008). For Amazonian forests, the restrictions in felling cycles and MLDs established in IN number 5 of IBAMA are estimations which are not derived from scientific data.…”

Section: Discussionmentioning

confidence: 99%

Wood growth of Tabebuia barbata (E. Mey.) Sandwith (Bignoniaceae) and Vatairea guianensis Aubl. (Fabaceae) in Central Amazonian black-water (igapó) and white-water (várzea) floodplain forests

Júnior

Piedade

Schöngart

2008

Trees

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Tree growth is a fundamental indicator for conservation plans of Amazonian floodplain forests. In this study we use dendrochronology to analyze wood growth patterns of Tabebuia barbata and Vatairea guianensis, two tree species occurring in nutrient-rich white-water (várzea, Mamirauá Sustainable Development Reserve, MSDR) and nutrient-poor black-water (igapó, Amanã Sustainable Development Reserve, ASDR) floodplain forests of Central Amazonia. From 20 trees per species and floodplain system (total of 80 trees) growing under a similar flooding regime with a mean inundation height of about 4 m we measured diameter at breast height (dbh). We sampled two cores per tree with an increment corer at the height of dbh to determine wood density (WD), tree age and mean radial increment (MRI) rates. The wood samples were macroscopically analyzed. Both tree species show distinct annual tree rings characterized by marginal parenchyma tissues. MRI was measured by a digital measuring device and WD was determined by the ratio dry mass/fresh volume. MRI of both tree species was significantly higher in the várzea than in the igapó, which can be traced back to the contrasting nutrient status. WD showed no difference comparing both floodplain forest types. Tree ages of a species for the same diameter are more than twofold higher in the igapó than in the várzea. To insure a sustainable harvest, felling cycles in these forests should be adjusted according to rates of growth.

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Section: Discussionmentioning

confidence: 99%

Wood growth of Tabebuia barbata (E. Mey.) Sandwith (Bignoniaceae) and Vatairea guianensis Aubl. (Fabaceae) in Central Amazonian black-water (igapó) and white-water (várzea) floodplain forests

Júnior

Piedade

Schöngart

2008

Trees

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“…The highest tree (27.4 m) was recorded in the Copper belt area of Zambia (Groome et al, 1957) while the probability of occurrences there is nowhere higher than 0.5. Stahle et al (1999) write that the natural woodlands supporting adequate stocks of P. angolensis for industrial extraction are confined to certain areas of north-western and north central…”

Section: Vdc/distribution Modelling For Pterocarpus Angolensis -Appromentioning

confidence: 99%

Potential, realised, future distribution and environmental suitability for Pterocarpus angolensis DC in southern Africa

Cauwer

Muys

Revermann

et al. 2014

Forest Ecology and Management

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“…For a number of commercial tree species, tree-ring analysis has been applied to find that ages of trees at reaching the minimum cutting diameter were high. For example, Pterocarpus angolensis needed on average more than 100 years to reach the minimum cutting diameter of 35 cm in various sites in deciduous woodlands in tropical southern Africa (Stahle et al 1999;Therrell et al 2007). In Cameroon, Triplochiton scleroxylon needed on average 80 years to reach 80 cm .…”

Section: Fluctuations In Growing Conditions and Physiological Responsmentioning

confidence: 99%

Dendroecology in the tropics: a review

Rozendaal

Zuidema

2010

Trees

214

121

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Over the last decade the field of tropical dendroecology has developed rapidly and major achievements have been made. We reviewed the advances in three main themes within the field. First, long chronologies for tropical tree species were constructed which allowed climate reconstructions, revealed sources of climatic variation and clarified climate-growth relations. Other studies combined tree-ring data and stable isotope ( 13 C and 18 O) measurements to evaluate the response of tropical trees to climatic variation and changes. A second set of studies assessed long-term growth patterns of individual trees throughout their life. These studies enhanced the understanding of growth trajectories to the canopy, quantified autocorrelated tree growth and yielded new estimates of tree ages. Such studies were also used to reconstruct the disturbance history of tropical forests. The last set of studies applied tree-ring data to growth models. Tree-ring data can replace diameter measurements from research plots, provide additional information to construct population models, improve timber yield models and validate model output. Based on our review, we propose two main directions for future research.(1) An evaluation of the causes and consequences of growth variation within and among trees and their relation to environmental variation. Studies evaluating this directly contribute to improved understanding of tropical tree ecology. (2) The simultaneous measurement of widths and stable isotope fractions in tree rings offers the potential to study responses of trees to climatic change. Given the major role of tropical forests in the global carbon cycle, knowing these responses is of high priority.

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Management implications of annual growth rings in Pterocarpus angolensis from Zimbabwe

Cited by 150 publications

References 6 publications

Wood growth of Tabebuia barbata (E. Mey.) Sandwith (Bignoniaceae) and Vatairea guianensis Aubl. (Fabaceae) in Central Amazonian black-water (igapó) and white-water (várzea) floodplain forests

Wood growth of Tabebuia barbata (E. Mey.) Sandwith (Bignoniaceae) and Vatairea guianensis Aubl. (Fabaceae) in Central Amazonian black-water (igapó) and white-water (várzea) floodplain forests

Potential, realised, future distribution and environmental suitability for Pterocarpus angolensis DC in southern Africa

Dendroecology in the tropics: a review

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