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1. A baseline classification of riparian woodland plant communities in the Okavango Delta, Botswana

Author:
Tsheboeng, Gaolathe; Murray-Hudson, Mike; Kashe, Keotshepile
Source:
Southern forests 2016 v.78 no.2 pp. 97-104
ISSN:
2070-2639
Subject:
Croton; Garcinia; Hyphaene; Syzygium; Vachellia; body water; cluster analysis; community structure; floodplains; forests; indicator species; monitoring; plant communities; riparian areas; species diversity; surface water; woodlands; Botswana
Abstract:
... In the Okavango Delta information on the riparian woodland vegetation community composition and distribution is generally lacking. Past studies in the Delta were mainly focused on the quantitative classification of seasonal floodplain herbaceous vegetation communities. The aim of this study was to determine riparian woodland vegetation communities in the Okavango Delta. Vegetation sampling was con ...
DOI:
10.2989/20702620.2015.1108619

2. Aboveground biomass quantification and tree-level prediction models for the Brazilian subtropical Atlantic Forest

Author:
Uller, Heitor Felippe; Oliveira, Laio Zimermann; Klitzke, Aline Renata; Eleotério, Jackson Roberto; Fantini, Alfredo Celso; Vibrans, Alexander Christian
Source:
Southern forests 2019 v.81 no.3 pp. 261-271
ISSN:
2070-2639
Subject:
aboveground biomass; branches; carbon; carbon dioxide; forest types; leaves; models; neutralization; rain forests; specific gravity; tree and stand measurements; trees; tropical forests; uncertainty; wood; Brazil
Abstract:
... Forests are the largest biological reservoir of biomass and carbon on the planet. This fact turns them into the main tool to neutralise the CO₂ emitted by human activities. Despite such importance, the uncertainties associated with biomass estimates in forests, especially in (sub)tropical forests, are enormous. Facing this scenario, the objectives of this study were (1) to quantify through destruc ...
DOI:
10.2989/00306525.2019.1581498

3. Acacia mearnsii industry overview: current status, key research and development issues

Author:
Chan, Julian Moreno; Day, Philip; Feely, John; Thompson, Rob; Little, Keith M; Norris, Craig H
Source:
Southern forests 2015 v.77 no.1 pp. 19-30
ISSN:
2070-2639
Subject:
Acacia mearnsii; adhesives; bark; beverages; charcoal; consumers (people); exports; farmers; flocculants; forests; fuelwood; hardwood; harvesting; income; kraft pulping; land ownership; leather industry; markets; mechanization; pests; planting; prices; pulp; research and development; silviculture; tannins; trees; vegetables; wages and remuneration; wood chips; wood density; Brazil; China; India; South Africa
Abstract:
... Acacia mearnsii De Wild (black wattle) is an important plantation species for tannin production and woodchip exports in South Africa and Brazil. This study provides an updated overview of the black wattle industries in both countries, including planted areas and land ownership, silviculture and management, bark extract production, woodchip exports, as well as key research and development issues. T ...
DOI:
10.2989/20702620.2015.1006907

4. Acacia plantations in Vietnam: research and knowledge application to secure a sustainable future

Author:
Nambiar, EK Sadanandan; Harwood, Christopher E; Kien, Nguyen Duc
Source:
Southern forests 2015 v.77 no.1 pp. 1-10
ISSN:
2070-2639
Subject:
Acacia; climate; disease resistance; exports; forests; genotype; growers; income; monitoring; plantations; rural economics; soil; stand management; tree breeding; tree diseases; wood; Vietnam
Abstract:
... Vietnam has established 1.1 million ha of acacia plantations for wood production, managed on 5- to 10-year rotation cycles. Nearly 50% of the resource is managed by small growers holding 1–5 ha woodlots. Acacia plantations have emerged as an important resource for supporting the rural economy and national export revenue. Given the range of climate, terrain, soils, management inputs and skills, pla ...
DOI:
10.2989/20702620.2014.999301

5. A comparison between excavator-based harvester productivity in coppiced and planted Eucalyptus grandis compartments in KwaZulu-Natal, South Africa

Author:
Ramantswana, Muedanyi; McEwan, Andrew; Steenkamp, Jaap
Source:
Southern forests 2013 v.75 no.4 pp. 239-246
ISSN:
2070-2639
Subject:
Eucalyptus grandis; forestry equipment; forests; harvesters; harvesting; labor; mechanization; planting; pulpwood; regrowth; stem form; stems; trees; South Africa
Abstract:
... Due to the labour challenges in South Africa, mechanised forestry equipment has increasingly been required to operate in complex forest conditions – such as coppiced Eucalyptus compartments – where they have not operated before. For this reason, harvesters are either used in certain coppiced compartments with uncertain productivity expectations, or harvesters are not used in these compartments due ...
DOI:
10.2989/20702620.2013.858213

6. A comparison of collinearity mitigation techniques used in predicting BLUP breeding values and genetic gains over generations

Author:
Eatwell, K A; Verryn, S D; Roux, C Z; Geerthsen, P JM
Source:
Southern forests 2011 v.73 no.3-4 pp. 155-163
ISSN:
2070-2639
Subject:
Eucalyptus grandis; Pinus patula; breeding value; genetic improvement; parents; prediction; progeny; tree breeding
Abstract:
... Collinearity potentially has a negative impact on the prediction of genetic gains in tree breeding programs. This study investigated the reliability and impact of best linear unbiased prediction (BLUP) using various collinearity mitigation techniques and of two computational numerical precisions on the genetic gains in breeding populations. Multiple-trait, multiple-trial BLUP selection scenarios w ...
DOI:
10.2989/20702620.2011.639490

7. A comparison of diameter distribution models for Khaya ivorensis A.Chev. plantations in Brazil

Author:
Mayrinck, Rafaella Carvalho; Filho, Antonio Carlos Ferraz; Ribeiro, Andressa; Oliveira, Ximena Mendes de; Lima, Renato Ribeiro de
Source:
Southern forests 2018 v.80 no.4 pp. 373-380
ISSN:
2070-2639
Subject:
plantations; models; trees; Weibull statistics; stand basal area; Khaya ivorensis; databases; prediction; forests; Brazil
Abstract:
... The purpose of this study was to compare Beta, Gamma, Johnson's SB and Weibull functions fitted by different methods for describing the horizontal structure of Khaya ivorensis (African mahogany) plantations in Brazil. The database comprised 128 plots from six plantations at varying ages. The function fits were compared using the Kolmogoroff–Smirnoff test, mean bias and mean absolute error for the ...
DOI:
10.2989/20702620.2018.1463189

8. A comparison of planting and coppice regeneration of Eucalyptus grandis × Eucalyptus urophylla clones in South Africa

Author:
Crous, Jacob W; Burger, Louisa
Source:
Southern forests 2015 v.77 no.4 pp. 277-285
ISSN:
2070-2639
Subject:
Eucalyptus grandis; Eucalyptus urophylla; atmospheric precipitation; clones; coppicing; cost effectiveness; forests; hybrids; planting; stumps; trees; South Africa
Abstract:
... Results from two coppice compared to replant trials are presented that originated from clone by site interaction (CSI) trials established on high‑ and low‑productivity sites in subtropical coastal KwaZulu‑Natal, South Africa. After the 84‑month CSI trial measurements were completed the trees were harvested. Selected plots were allowed to coppice with the remainder replanted to the same four Eucaly ...
DOI:
10.2989/20702620.2015.1063031

9. A comparison of productive and non-productive green water-use efficiency of Podocarpus henkelii and Pinus patula in the KwaZulu-Natal Midlands

Author:
Bulcock, Hartley H; Gush, Mark B; Jewitt, Graham PW
Source:
Southern forests 2014 v.76 no.2 pp. 75-84
ISSN:
2070-2639
Subject:
Pinus patula; Podocarpus; afforestation; canopy; evaporation; forest plantations; forests; fynbos; grasslands; introduced species; models; planning; planting; soil; transpiration; trees; water management; water use efficiency; South Africa
Abstract:
... A number of studies undertaken in South Africa to quantify the green water-use (total evaporation) of introduced commercial forestry species have shown conclusively that green water-use from commercial forest plantations is substantially higher than from the original grasslands or fynbos that were replaced by afforestation. Green water can be categorised into productive (transpiration) and non-pro ...
DOI:
10.2989/20702620.2014.915451

10. A comparison of the cost-effectiveness of different eucalypt cut-stump control management options to reduce competition from coppice regrowth during stand establishment in Mpumalanga, South Africa

Author:
Roberts, Jonathan C; Little, Keith M; Light, Marnie E
Source:
Southern forests 2018 v.80 no.3 pp. 261-268
ISSN:
2070-2639
Subject:
triclopyr; felling; mechanization; coppicing; seedlings; Eucalyptus macarthurii; stand basal area; regrowth; control methods; trees; stand establishment; cost effectiveness; cambium; bark; stumps; mortality; forests; South Africa
Abstract:
... Selected cut-stump (Cut_surface) and basal frill (Basal_frill) treatments were tested on Eucalyptus macarthurii cut stumps that had previously been coppiced multiple times. Treatments included the application of herbicide (triclopyr as an amine salt, 360 g L⁻¹), either to the cut-surface or to a basal frill (cuts made through the bark and into the cambium at the base of the tree). These treatments ...
DOI:
10.2989/20702620.2017.1354283

11. A decision support tool approach based on the Electre TRI-B method for the valorisation of tropical timbers from the Congo Basin: an application for glulam products

Author:
Lissouck, René Oum; Pommier, Régis; Taillandier, Franck; Mvogo, Jean K; Breysse, Denys; Ohandja, Louis M Ayina
Source:
Southern forests 2018 v.80 no.4 pp. 361-371
ISSN:
2070-2639
Subject:
basins; decision support systems; endangered species; engineering; forests; glulam; markets; tropical wood
Abstract:
... An alternative approach to the formal management strategy of tropical timber species from the Congo Basin was investigated. It focused on the development of glulam, with an aim to specify a decision support model for the valorisation of tropical timber species considered for use in these products. There were 76 forest species analysed regarding ecological, engineering and social criteria according ...
DOI:
10.2989/20702620.2018.1463153

12. A first-approximation simple dynamic growth model for forest teak plantations in Gujarat state of India

Author:
Tewari, Vindhya Prasad; Singh, Bilas
Source:
Southern forests 2018 v.80 no.1 pp. 59-65
ISSN:
2070-2639
Subject:
mathematical models; plantations; stand density; forest management; growth models; Tectona grandis; stand basal area; tropical wood; forests; India
Abstract:
... Tectona grandis (teak) is one of the most important tropical timber species occurring naturally in India. In India, teak is the single most important commercial timber species. Scientifically sound growth models, based on advanced modelling techniques, are often not available, although they are necessary for the successful management of teak stands in the country. Long-term forest planning require ...
DOI:
10.2989/20702620.2016.1277644

13. Air layering and its potential in propagating Uapaca kirkiana: a fruit tree from the miombo woodland, Tanzania

Author:
Mwang'ingo, PP; Lulandala, LL
Source:
Southern forests 2011 v.73 no.2 pp. 67-71
ISSN:
2070-2639
Subject:
Uapaca kirkiana; air layering; biomass; cost effectiveness; deforestation; forests; fruit trees; indole butyric acid; nutritional status; rearing; rooting; roots; shoots; Tanzania
Abstract:
... The potential to propagate Uapaca kirkiana through air layering was investigated at Igumbilo forest, Tanzania. The objective was to determine the effect of time of setting air layers and use of indole-3-butyric acid (IBA) to promote rooting. Air layers were initiated on young shoots, 1-to 2-years old, growing on mature trees. After root initiation, they were detached, potted and reared at the nurs ...
DOI:
10.2989/20702620.2011.610875

14. Allelopathic effects of invasive Eucalyptus camaldulensis on germination and early growth of four native species in the Western Cape, South Africa

Author:
Ruwanza, Sheunesu; Gaertner, Mirijam; Esler, Karen J; Richardson, David M
Source:
Southern forests 2015 v.77 no.2 pp. 91-105
ISSN:
2070-2639
Subject:
Dimorphotheca; Eucalyptus camaldulensis; Olea europaea; allelopathy; bark; cineole; ecosystems; forests; gas chromatography; geomorphology; germination; greenhouse experimentation; habitats; indigenous species; invasive species; leaves; motivation; rivers; root growth; seedling growth; shoots; soil; stream flow; trees; South Africa
Abstract:
... Eucalyptus camaldulensis Dehnh. (red river gum; Myrtaceae) is an invasive tree in riparian habitats of the Western Cape, South Africa, where it replaces indigenous vegetation and affects ecosystem functioning. These invasions lead to changes in river geomorphology and reduction in stream flow. The mechanisms that drive these effects are poorly understood. The potential for allelopathic effects of ...
DOI:
10.2989/20702620.2014.965985

15. Allometric equations from a non-destructive approach for biomass prediction in natural forest and plantation in West Africa

Author:
Kora, SA Hamzath; Guendehou, GH Sabin; Goussanou, Cédric A; Assogbadjo, Achille E; Sinsin, Brice
Source:
Southern forests 2019 v.81 no.2 pp. 111-122
ISSN:
2070-2639
Subject:
Acacia auriculiformis; allometry; biomass; equations; forest ecosystems; forests; models; prediction; statistical analysis; trees; wood; Benin
Abstract:
... Allometric equations are required for a rapid estimation of commercial timber volume and forest biomass stocks. In order to preserve the forest ecosystem, this study applied a non-destructive sampling approach to measure biophysical properties of living trees. From these measurements, volume and biomass models were developed for 11 dominant tree species in a semi-deciduous natural forest and for A ...
DOI:
10.2989/20702620.2018.1512795

16. Allometric models for estimation of aboveground biomass of Gmelina arborea Roxb. in pulpwood plantations of Bangladesh

Author:
Khushi, Lulu Rayhan; Hossain, Mahmood; Abdullah, SM Rubaiot; Saha, Sanjoy; Siddique, Mohammad Raqibul Hasan
Source:
Southern forests 2019 v.81 no.1 pp. 45-48
ISSN:
2070-2639
Subject:
Gmelina arborea; aboveground biomass; allometry; bark; branches; carbon; equations; forests; indigenous species; leaves; linear models; nitrogen; phosphorus; plantations; potassium; pulpwood; trees; Bangladesh
Abstract:
... Gmelina arborea Roxb. is a fast-growing, deciduous tree species native to Bangladesh. It has been widely planted since 1992 for commercial production of pulpwood in hilly areas of Bangladesh. The purpose of this study was to derive well-fitting allometric models for estimation of aboveground biomass, and carbon and nutrient (nitrogen, phosphorus and potassium) stocks in G. arborea to ensure sustai ...
DOI:
10.2989/20702620.2018.1488209

17. Allometric models for height and aboveground biomass of dominant tree species in South African Mistbelt forests

Author:
Mensah, Sylvanus; Veldtman, Ruan; Seifert, Thomas
Source:
Southern forests 2017 v.79 no.1 pp. 19-30
ISSN:
2070-2639
Subject:
Combretum; Croton; Syzygium; Trichilia dregeana; aboveground biomass; allometry; biomass production; branches; carbon; equations; forest inventory; models; rain forests; tree and stand measurements; trees; variance; South Africa
Abstract:
... Novel species-specific equations for the estimation of height and aboveground biomass were established for four dominant tree species (Syzygium gerrardii Burtt Davy, Combretum kraussii Hochst., Trichilia dregeana Sond. and Croton sylvaticus Hochst.), in the Northern Mistbelt Forests of South Africa. A non-destructive sampling methodology was applied, which was based on measuring standing trees, se ...
DOI:
10.2989/20702620.2016.1225187

18. Allometric models to estimate foliage biomass of Tamarindus indica in Burkina Faso

Author:
Bondé, Loyapin; Ganamé, Moussa; Ouédraogo, Oumarou; Nacoulma, Blandine MI; Thiombiano, Adjima; Boussim, Joseph I
Source:
Southern forests 2018 v.80 no.2 pp. 143-150
ISSN:
2070-2639
Subject:
Tamarindus indica; allometry; analysis of variance; biomass; equations; forests; income; leaves; medicine; model validation; models; nontimber forest products; people; prediction; socioeconomics; trees; Burkina Faso
Abstract:
... Tamarindus indica L. is a multi-purpose tropical species. In West Africa the local people use its leaves daily as a source of food, medicine and income. To prevent the over-exploitation of this species for its use for non-timber forest products, the estimation of foliage production needs to be adressed. This study aimed to (1) assess the effects of distribution zone and tree size on foliage produc ...
DOI:
10.2989/20702620.2017.1292451

19. Allometric relationships to predict aboveground biomass of 8–10-year-old Eucalyptus grandis × E. nitens in south-eastern Mpumalanga, South Africa

Author:
van Niekerk, PB; Drew, DM; Dovey, SB; du Toit, B
Source:
Southern forests 2020 v.82 no.1 pp. 15-23
ISSN:
2070-2639
Subject:
Eucalyptus grandis; Eucalyptus nitens; United Nations Framework Convention on Climate Change; aboveground biomass; allometry; carbon; carbon footprint; carbon sinks; clearcutting; databases; environmental policy; forests; guidelines; hybrids; models; ownership; pulpwood; statistical analysis; stemwood; tree and stand measurements; wood volume; South Africa
Abstract:
... South Africa is new to the implementation of climate change policies, and the forestry sector in this country is taking ownership of estimating its greenhouse gas inventories. Improving the level of accuracy of carbon stock estimations calls for the population of a national biomass database on commercially planted species. The development of models to predict the biomass of Eucalyptus grandis × ni ...
DOI:
10.2989/20702620.2019.1686686

20. Alternative eucalypts for commercial pulpwood production at moderately dry sites in the warm temperate zone of KwaZulu-Natal, South Africa

Author:
Gardner, Robin AW; Little, Keith M; Kanzler, Arnulf; Naidoo, Thimagren N
Source:
Southern forests 2018 v.80 no.2 pp. 115-129
ISSN:
2070-2639
Subject:
Corymbia; Eucalyptus benthamii; Glycaspis brimblecombei; Leptocybe invasa; altitude; atmospheric precipitation; forests; insect pests; planting; pulpwood; temperate zones; temperature; tree and stand measurements; tree growth; trees; South Africa
Abstract:
... During 2001, a series of four site–taxa interaction trials was established in the warm temperate (mean annual temperature range 16–19 °C) forestry climatic zone of KwaZulu-Natal (KZN), South Africa. The main objective was to investigate the commercial forestry potential of a range of alternative Eucalyptus and Corymbia taxa for moderately dry (mean annual precipitation < 850 mm) sites within the z ...
DOI:
10.2989/20702620.2017.1337434