Plants and vegetation of NW Ethiopia

Friis, Ib; Demissew, Sebsebe; Weber, Odile; Breugel, Paulo van

doi:10.36253/978-88-5518-634-6

Cited by 44 publications

(75 citation statements)

References 30 publications

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“…In conclusion, the fossil pollen composition attests of a sub-montane wooded grassland similar in composition to the subforest zone now occurring at about 1600-1800 m elevation on the Northern Ethiopian plateau (Bonnefille 1971;Friis et al 2010).…”

Section: Paleobotanical Datamentioning

confidence: 76%

Age and formation processes of an Acheulean site with extensive accumulation of large cutting tools: Garba I (Melka Kunture, Upper Awash, Ethiopia)

Galán

Quintas

Bahain

et al. 2022

Archaeol Anthropol Sci

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The paper provides new data on the age and formation processes of Garba I (Melka Kunture, Upper Awash, Ethiopia). The site, one of the largest handaxe accumulations of the African Acheulean, was extensively excavated in the Sixties of the last century by J. Chavaillon but left largely unpublished. The chronology was also poorly constricted. Quartz grains dated through electron spin resonance (ESR) spectrometry now provide a minimum age of 538 ka for the archaeological layer. In addition, we make available new data allowing an updated interpretation of the stratigraphic sequence and spatial distribution, as well as a detailed taphonomic study of the lithic assemblage. Additional information on the archaeozoological and palaeobotanical record are integrated in the discussion. We conclude that the extensive accumulation of large cuttings tools (LCTs) is not the result of major sedimentary disturbance processes but rather the outcome of a distinct hominin behaviour, which possibly was not focused on the processing and consumption of large mammals. New research at Garba I allows new insights on the Acheulean sites with similar large accumulations of handaxes. Additionally, it contributes to a better understanding of the early Middle Pleistocene in Africa, an under-researched period of the Early Stone Age.

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Section: Paleobotanical Datamentioning

confidence: 76%

Age and formation processes of an Acheulean site with extensive accumulation of large cutting tools: Garba I (Melka Kunture, Upper Awash, Ethiopia)

Galán

Quintas

Bahain

et al. 2022

Archaeol Anthropol Sci

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“…The present study was built on an in‐depth scenario planning exercise we previously conducted in southwestern Ethiopia (Jiren, Hanspach, et al, 2020). Southwestern Ethiopia is characterized by rich but declining biodiversity (Friis et al, 2011; Oostdijk, 2021). People's livelihood strongly relies on the ecosystem services generated from the landscape (Jiren et al, 2022; Jiren, Leventon, et al, 2021).…”

Section: Methodsmentioning

confidence: 99%

Bridging scenario planning and backcasting: A Q‐analysis of divergent stakeholder priorities for future landscapes

et al. 2023

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1. Many landscapes in sub-Saharan Africa have undergone rapid changes, often with negative social and ecological impacts. Avoiding (or reversing) such negative impacts requires proactive landscape planning. Scenario planning, a participatory approach that generates narratives of plausible landscape change trajectories in the future, has been widely used to support landscape planning and decisions.However, not least because of challenges arising from group dynamics, few examples exist where backcasting-the collective envisioning of a desirable future landscape and the identification of pathways to reach that future-has been applied in landscape planning.2. In this study, building on past scenario planning work in southwestern Ethiopia, we begin to fill this empirical and methodological gap. Specifically, we used the Q-methodology to elucidate stakeholders' divergent landscape aspirations in a case study in southwestern Ethiopia.3. Our results show that many stakeholders share a similar vision of building a future landscape that supports smallholder-based development. However, details in the envisaged pathways differ between stakeholders. Three distinct pathways were prioritized by different stakeholders: (1) Agroecological production, (2) Coffee investment and (3) Intensive food crop production. Accounting for these divergent aspirations is important when taking further steps in landscape planning.4. We show how using the Q-methodology as a subjective assessment of stakeholders' landscape priorities can facilitate the integration of backcasting within the normative process of landscape planning. Our approach thus helps navigate conflicting stakeholders' preferences and based on that, carefully plan collective action towards a shared landscape vision.

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“…Te Ethiopian highlands constitute large parts of the Afromontane regions in Africa [22,23]. Tese regions are dominated by dry afromontane forests, which are a complex ecosystem characterized by a variable rainfall pattern and a prolonged dry season [24]. It is the second-richest vegetation type, with about 460 species, next to Acacia-Commiphora woodland [25].…”

Section: Introductionmentioning

confidence: 99%

Aboveground Biomass Models for Indigenous Tree Species in the Dry Afromontane Forest, Central Ethiopia

Lemi

Eshete

Seid

et al. 2023

International Journal of Forestry Research

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The application of biomass models for quantifying forests’ above-ground biomass is essential for sustainable forest management. However, lack of knowledge in modelig biomass of individual tree growth hinders the sustainable management of Dry Afromontane forests. In this study, models to estimate above-ground biomass were developed for Rhus ruspolii, Ekebergia capensis, and Nuxia congesta. To develop the models, a total of 45 trees from different diameter classes were selected, felled, and divided into different biomass compartments. For the model’s development, diameter at breast height (DBH), total height (TH), diameter at stump height (DSH), and wood density (WD) were used as independent variables. Models’ performances were evaluated using RSE, adjusted coefficient of determination, and AIC. Also, model validations were done by using rRMSE, mean absolute deviation, bias, and coefficient of variation. Models 5 (Adj-R2 = 0.92), 6 (Adj-R2 = 0.97), and 8 (Adj-R22 = 0.82) were the best fitted models for Nuxia congesta, Ekebergia capensis, and Rhus ruspolii, respectively. The average wood densities of Ekebergia capensis, Nuxia congesta, and Rhus ruspolii were 0.59, 0.50, and 0.69, respectively. The variation between observed biomass and estimated biomass using new models was statistically not significant ( p > 0.05 ). Thus, the biomass models developed here can be important tools to accurately estimate above-ground biomass in the Menagesha Suba forest and can be integrated into decision support tools.

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Plants and vegetation of NW Ethiopia

Cited by 44 publications

References 30 publications

Age and formation processes of an Acheulean site with extensive accumulation of large cutting tools: Garba I (Melka Kunture, Upper Awash, Ethiopia)

Age and formation processes of an Acheulean site with extensive accumulation of large cutting tools: Garba I (Melka Kunture, Upper Awash, Ethiopia)

Bridging scenario planning and backcasting: A Q‐analysis of divergent stakeholder priorities for future landscapes

Aboveground Biomass Models for Indigenous Tree Species in the Dry Afromontane Forest, Central Ethiopia

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