Enrichment of Central African logged forests with high-value tree species: testing a new approach to regenerating degraded forests

Doucet, Jean‐Louis; Daïnou, Kasso; Ligot, Gauthier; Ouédraogo, Dakis-Yaoba; Bourland, Nils; Ward, Sheila; Tekam, Patrice; Lagoute, Paul

doi:10.1080/21513732.2016.1168868

Cited by 30 publications

(47 citation statements)

References 45 publications

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“…For the case of P. elata, the survival rate within forest environments has been attributed to factors such as light availability [15] [17], influence of pests [20], herbivory [51] and edaphic heterogeneity [2] [34] [42]. The findings in the present study derive from field observation, wherein the distribution of P. elata is certainly influenced by soil properties among others.…”

Section: Local Scale Edaphic Requirements For Survival Of P Elatamentioning

confidence: 52%

Local Scale Edaphic Surveys in and out of a <i>Pericopsis elata</i> (Harms) Meeuwen Natural Forest Stand in East Cameroon

Kome¹,

Onana²,

Ngoucheme³

et al. 2018

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One of the problems limiting high survival rates of Pericopsis elata (afrormosia, assamela), a high value timber species, is lack of data on its pedological requirements. A study was conducted in the East Region of Cameroon to identify possible soil properties favoring its spatial distribution. Two test areas, in and out of a Pericopsis elata natural forest stand were identified and in each sampling units of 50 × 50 m delineated. Thirty eight and sixteen quadrats in and out of the stands were respectively sampled for soil physico-chemical properties, number of stems and diameter at breast height. Soil samples in each quadrat were analyzed following standard laboratory procedures. Soil properties were tested for normality and compared for the two sites using Student's t-test. Principal component analysis and correlation analysis were performed on tree and soil data to identify soil factors responsible for spatial distribution. From our findings, key soil indicators favouring Pericopsis elata distribution appear to be acidity (soil pH and exchangeable acidity), base status (base saturation and exchangeable bases) and texture (clay content). More specifically, optimal soil conditions for growth and survival of Pericopsis elata are: pH (4.1 -5.0), exchangeable acidity (<4.67 cmolc•kg −1 ), base saturation (6.2% -17.8%), and clay content (24.0% -49.0%), which should be considered in site selection for reforestation with Pericopsis elata.

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Section: Local Scale Edaphic Requirements For Survival Of P Elatamentioning

confidence: 52%

Local Scale Edaphic Surveys in and out of a <i>Pericopsis elata</i> (Harms) Meeuwen Natural Forest Stand in East Cameroon

Kome¹,

Onana²,

Ngoucheme³

et al. 2018

OJSS

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“…Studies by Löf et al (2016), Owari et al (2016), and Doucet et al (2016) show how management can help meet the joint goals of timber production and biodiversity conservation. Löf et al (2016) examined how different management regimes affect high-value timber production, biodiversity, and cultural services in Swedish oak forests.…”

Section: Synergies Between Biodiversity and Timber Managementmentioning

confidence: 97%

“…This Special Issue is based on a technical session at the IUFRO 2014 World Congress that explored potentially positive interactions between high-value timber management and biodiversity. The papers cover a wide geographic range: from temperate forests in Europe (Löf et al 2016;Merganic et al 2016), Canada (Hébert et al 2016), and Japan (Owari et al 2016), to tropical forests in Cameroon (Doucet et al 2016) and Ghana (Onyakwelu & Olabiwonnu 2016;Stephens et al 2016).…”

Section: Synergies Between Biodiversity and Timber Managementmentioning

confidence: 98%

“…Owari et al (2016) point out that the single-tree management model may only be cost-effective for extremely high-value species. Doucet et al (2016) found that the cost of restoration planting challenges profitability even for fast-growing species so that regeneration planting requires both incentives and a regulatory structure that promotes attention to regeneration. Although investment in incentives, regulations, and oversight are required, can we afford to do less?…”

Section: Synergies Between Biodiversity and Timber Managementmentioning

confidence: 98%

“…For example, Betula maximowicziana can be worth more than 4500 USD m -3 , and the value increases after death, due to the change of the wood to a color preferred by buyers. Doucet et al (2016) describe a test of a strategy for enrichment planting, which employs simple mixtures of 23 native species in secondary forest in Cameroon as a method for restoring highvalue trees, including many of conservation concern, such as Entandrophragma utile. Due to the removal by logging of seed sources and the need for canopy openness for early growth, many of these species require special attention to regeneration for recovery.…”

Section: Synergies Between Biodiversity and Timber Managementmentioning

confidence: 99%

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2016

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Long-Term Vegetation Change in Central Africa: The Need for an Integrated Management Framework for Forests and Savannas

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Sustainability Challenges in Sub-Saharan Africa I

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Tree-dominated forests and grass-dominated savannas represent the two main tropical biomes covering the overwhelming majority of sub-Saharan Africa (SSA) (White 1983). Forests and savannas have a different, even antagonistic, ecological functioning (Staver et al. 2011a), but they both provide critical services to local populations (see Chaps. 7 and 10, Vol. 1; Chaps. 5 and 6, Vol. 2). Tropical forests are dominated by trees, forming closed canopies and complex vertical structures, and contain in their understory C3 grasses that are more adapted to humidity and shadow. Such forests are encountered in areas of high annual rainfall and limited seasonality (Malhi et al. 2009), and are very sensitive to disturbances. In contrast, trees and C4 grasses in tropical savannas coexist, are more adapted to aridity, are shade intolerant, and are found in areas that are drier and have higher seasonality (Ratnam et al. 2011). Savannas rely on frequent disturbances due to fires and/or mega-herbivores that maintain an open canopy and species diversity (Bond et al. 2005;Sankaran et al. 2005;Staver and Bond 2014).The occurrence of tropical forests and savannas is, however, not rigidly determined by climatic conditions. Recent analyses of remotely sensed tree cover at the global (Hirota et al. 2011;Staver et al. 2011b) and at the regional (Favier et al. 2012) scales, supported by theoretical work (Staver et al. 2011a;Staver and Levin 2012),

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Enrichment of Central African logged forests with high-value tree species: testing a new approach to regenerating degraded forests

Cited by 30 publications

References 45 publications

Local Scale Edaphic Surveys in and out of a <i>Pericopsis elata</i> (Harms) Meeuwen Natural Forest Stand in East Cameroon

Local Scale Edaphic Surveys in and out of a <i>Pericopsis elata</i> (Harms) Meeuwen Natural Forest Stand in East Cameroon

Synergies between biodiversity and timber management

Long-Term Vegetation Change in Central Africa: The Need for an Integrated Management Framework for Forests and Savannas

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Enrichment of Central African logged forests with high-value tree species: testing a new approach to regenerating degraded forests

Cited by 30 publications

References 45 publications

Local Scale Edaphic Surveys in and out of a &lt;i&gt;Pericopsis elata&lt;/i&gt; (Harms) Meeuwen Natural Forest Stand in East Cameroon

Local Scale Edaphic Surveys in and out of a &lt;i&gt;Pericopsis elata&lt;/i&gt; (Harms) Meeuwen Natural Forest Stand in East Cameroon

Synergies between biodiversity and timber management

Long-Term Vegetation Change in Central Africa: The Need for an Integrated Management Framework for Forests and Savannas

Contact Info

Product

Resources

About

Local Scale Edaphic Surveys in and out of a <i>Pericopsis elata</i> (Harms) Meeuwen Natural Forest Stand in East Cameroon

Local Scale Edaphic Surveys in and out of a <i>Pericopsis elata</i> (Harms) Meeuwen Natural Forest Stand in East Cameroon