Assessing the conservation of Miombo timber species through an integrated index of anthropogenic and climatic threats

Catarino, Sílvia; Romeiras, Maria M.; Pereira, José M. C.; Figueira, Rui

doi:10.1002/ece3.7717

Cited by 5 publications

(3 citation statements)

References 59 publications

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“…More protective measures are also important. For example, B. spiciformis is an abundant species in Angola, but a recent study reported that about 47% of its distribution includes areas with "High" and "Very High" threat levels, and only 4.2% are in protected areas [98], reinforcing the concern of Shumba et al [99] and Romeiras et al [100], about the importance of increasing conservation areas for the most vulnerable forest species. The production rates of Miombo wood in regrowth require long cutting cycles for maturation, which conditions the sustainable production of charcoal [26].…”

Section: Discussionmentioning

confidence: 99%

Assessing the Impact of Charcoal Production on Southern Angolan Miombo and Mopane Woodlands

Kissanga,

Catarino,

Máguas

et al. 2023

Forests

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About 80% of Angola’s forest surface is covered by Miombo and Mopane woodlands, which are explored for diverse activities such as fuelwood and food. This study aimed to assess the recovery dynamics of Miombo and Mopane woodlands after the selective cutting of tree species for charcoal production. For that, the structure and composition of plant communities in 37 plots, located in southwestern Angola, were characterized in fallows of different ages. Results showed that the diameter at breast height, basal area, biomass, and biovolume of trees all rose as the age of the fallow increased, and there were no significant differences in richness, diversity, or dominance of trees between adult–young classes or recent–older fallows. In Mopane, fallows took longer to regenerate, were more affected by environmental and anthropogenic factors, and also presented a higher species adaptation to disturbance. There were more sprouter and seeder trees in Miombo, and new kilns were more distant from roads and villages. Moreover, the selective removal of species deeply altered the community structure and dynamics, despite not directly affecting tree diversity. Thus, new management strategies are needed to ensure the survival of these woodlands such as expanding protected areas and increasing systematic research.

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Section: Discussionmentioning

confidence: 99%

Assessing the Impact of Charcoal Production on Southern Angolan Miombo and Mopane Woodlands

Kissanga,

Catarino,

Máguas

et al. 2023

Forests

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“…It highlights the need for further studies and extensive fieldwork to understand the distribution and main threats of the most restricted taxa. This is particularly important in Angola because the country has one of the highest rates of deforestation in southern Africa (Romeiras et al, 2014) and is facing numerous threats to biodiversity, including the effects of climatic change, changes in fires regimes, overexploitation of natural resources, and rapid population growth, which cause the degradation of Angolan natural ecosystems (Catarino et al, 2020(Catarino et al, , 2021b.…”

Section: Discussionmentioning

confidence: 99%

Species Diversity and Endemicity in the Angolan Leguminosae Flora

et al. 2022

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Angola has a great diversity of species and ecosystems and a high level of endemism. However, knowledge of the native flora remains very incomplete and outdated. Leguminosae is the largest family in the country, including many species which are of local or more regional economic importance. Based on an extensive review of bibliographic sources, natural history collections, and online databases, the checklist of Angolan Leguminosae plants was updated, including data on their native distribution, conservation status, and principal uses. The endemic taxa were the subject of additional investigation, including the main habitat, the number of collections preserved in herbaria, and the locality of the first collection. We identified 953 Leguminosae taxa occurring in Angola, of which 165 are endemic to the country. Among the 180 genera found, Crotalaria (136) and Indigofera (96) have the highest number of taxa. Almost half of the studied species have important applications, mainly in traditional medicine (385), forage (267), timber (188), and food (120). Nevertheless, only 27.7% have been assessed according to the IUCN Red List and 10 species are classified as threatened. Thirty-three endemics are known only from the type specimen, revealing the lack of knowledge on these species and the need for further field research. More than 30 type specimens were collected in the Serra da Chela, which highlights the importance of this region for biodiversity conservation.

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“…Based on current and future climate scenarios, some African legume trees were recently studied (e.g., Adjonou et al, 2020;Atanasso et al, 2021;Catarino et al, 2021). For instance, Nyairo and Machimura (2020) revealed the range projections for nine taxa in Kenya, highlighting that a mix of expansion or contraction occurs, according to the species' ability to establish in urban areas or inability to endure the predicted climate change.…”

Section: Introductionmentioning

confidence: 99%

Present and future distribution of Faidherbia albida in Cabo Verde as revealed by climatic modelling and LULC analysis

2023

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Climate change poses one of the most significant challenges to conserve biodiversity, especially in tropical dry islands, as is the case of Cabo Verde (northeast Atlantic Ocean). This archipelago has a low percentage of forest cover and hosts only seven native tree species, among them, Faidherbia albida (Delile) A.Chev. (Fabaceae). Therefore, protective afforestation is extremely important in Cabo Verde, one of the most vulnerable West African countries to climate change. With this work, we aimed to estimate the current distribution and potential shifts in suitable areas for F. albida under climate change, using species distribution models (i.e., random forest, generalized linear and additive models), covering its distribution range in Cabo Verde and mainland Africa. The best model was then projected for the studied area, at two different slice times, using Representative Concentration Pathway (RCP) 4.5 and 8.5 scenarios. Based on current bioclimatic variables, we estimated that almost two thirds of Cabo Verde’s territory is highly suitable for F. albida, which contrasts with its current occurrence. By overlaying the present habitat suitability with land use and land cover data, we concluded that habitat availability and suitability could be constrained by that factor. On average, the predicted suitable habitat for future distributions gradually decreases by 2080 under both scenarios compared with the current, with a smaller effect of RCP4.5 than of RCP8.5. Local authorities can benefit from this research and develop actions to promote sustainable reforestation in Cabo Verde, which should include native tree species that are best adapted to the local climate and could thus contribute to mitigate the effects of climate change.

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Assessing the conservation of Miombo timber species through an integrated index of anthropogenic and climatic threats

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 5 publications

References 59 publications

Assessing the Impact of Charcoal Production on Southern Angolan Miombo and Mopane Woodlands

Assessing the Impact of Charcoal Production on Southern Angolan Miombo and Mopane Woodlands

Species Diversity and Endemicity in the Angolan Leguminosae Flora

Present and future distribution of Faidherbia albida in Cabo Verde as revealed by climatic modelling and LULC analysis

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