Woody species diversity, structure, and carbon stock in a disturbed Dry Afromontane Forest in Ethiopia

Mindaye Teshome Legese; Nesibu Yahya Kedirkan; Carlos Moreira Miquelino Eleto Torres; Pedro Manuel Villa; Mehari Alebachew Tesfaye

doi:10.4336/2025.pfb.45e202302284

Authors

Mindaye Teshome Legese Desenvolvimento Florestal Eiópia https://orcid.org/0000-0002-3355-5825
Nesiby Yahya Desenvolvimento Florestal Etiópia https://orcid.org/0000-0002-6285-9369
Carlos Moreira Miquelino Eleto Torres Federal University of Viçosa https://orcid.org/0000-0003-0255-2637
Pedro Manuel Villa Federal University of Juiz de Fora https://orcid.org/0000-0003-4826-3187
Mehari Alebachew Tesfaye Desenvolvimento Florestal Eiópia https://orcid.org/0000-0003-0208-7448

DOI:

https://doi.org/10.4336/2025.pfb.45e202302284

Keywords:

Biomass, Biodiversity, Forest regeneration

Abstract

Ethiopia is one of the tropical countries endowed with diverse forest formations. These forests supply the largest proportions of wood used for furniture, construction, and household energy consumption. Arbagugu forest is one of the Dry Afromontane forests under severe anthropogenic disturbances. Despite this fact, up to date information is lacking about the status of the forest. This study evaluates the woody species composition, diversity, population structure, and carbon stock in Arbagugu forest. We found that the forest had low woody species richness and diversity. Many woody species had inadequate regeneration status. The carbon stock density of the forest falls below values reported for other similar forests. Therefore, it is important to develop forest management strategies, utilization plans, and restoration initiatives that meet the local community’s interest. Minimizing anthropogenic disturbances is essential for preserving plant diversity and enhancing carbon storage in the forest. Our study recommends restoration of highly degraded areas through enrichment plantings and protection measures along with investments in awareness-raising about forest conservation. We also recommend further research quantifying the socio-ecological impacts of human activities on the forest and investigating the potential for sustainable timber harvesting using selected tree species from the forest.

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References

Abiyu, A. et al. Epiphytic recruitment of Schefflera abyssinica (A. Rich) Harms. and the rle of microsites in affecting tree community structure in remnant forests in northwest Ethiopia. SINET: Ethiopian Journal of Science, v. 36, n. 1, p. 41-44, 2013.

Addo-Fordjour, P. et al. Floristic composition, structure and natural regeneration in a moist semi-deciduous forest following anthropogenic disturbances and plant invasion. International Journal of Biodiversity and Conservation, v. 1, n. 2, p. 21-37, 2009.

Arbizu-Martinez. Pairwise multilevel comparison using adonis. R Package Version 0.3.2019.

Ayalew, A. A floristic composition and structural analysis of Denkoro Forest, South Wello. 2003.Thesis (Master’s) - Addis Ababa University, Addis Ababa.

Bastin, J.-F. et al. Seeing Central African forests through their largest trees. Scientific Reports, v. 5, p. 1, p. 1-8, 2015. https://doi.org/10.1038/srep13156. DOI: https://doi.org/10.1038/srep13156

Bekele, M. et al. The context of REDD+ in Ethiopia: drivers, agents and institutions. [S.l.]: CIFOR, 2015.

Bekele, T. Vegetation ecology of remnant Afromontane forests on the central plateau of Shewa, Ethiopia. Uppsala: Opulus Press AB,1993.

Brown, S.& Lugo, A. E. Tropical secondary forests. Journal of Tropical Ecology, v. 6, n. 1, p. 1-32, 1990. https://doi.org/10.1017/S0266467400003989. DOI: https://doi.org/10.1017/S0266467400003989

Cairns, M. A. et al. Root biomass allocation in the world’s upland forests. Oecologia, v. 111, n. 1, 1-11, 1997. https://doi.org/10.1007/s004420050201. DOI: https://doi.org/10.1007/s004420050201

Carsan, S. et al. African wood density database. Nairobi: World Agroforestry Centre, 2012.

Chao, A. et al. Rarefaction and extrapolation with Hill numbers: a framework for sampling and estimation in species diversity studies. Ecological Monographs, v. 84, n. 1, p. 45-67, 2014. https://doi.org/10.1890/13-0133.1. DOI: https://doi.org/10.1890/13-0133.1

Chave, J. et al. Improved allometric models to estimate the aboveground biomass of tropical trees. Global Change Biology, v. 20, n. 10, p. 3177-3190, 2014. DOI: https://doi.org/10.1111/gcb.12629

Colwell, R. K. et al. Models and estimators linking individual-based and sample-based rarefaction, extrapolation and comparison of assemblages. Journal of Plant Ecology, v. 5, n. 1, p. 3-21. https://doi.org/10.1111/gcb.12629. DOI: https://doi.org/10.1093/jpe/rtr044

Conti, G. Large changes in carbon storage under different land-use regimes in subtropical seasonally dry forests of southern South America. Agriculture, Ecosystems & Environment, v. 197, p. 68-76, 2014. https://doi.org/10.1016/j.agee.2014.07.025. DOI: https://doi.org/10.1016/j.agee.2014.07.025

Devaraju, N. et al. Modelling the influence of land-use changes on biophysical and biochemical interactions at regional and global scales. Plant, Cell &Environment, v. 38, n. 9, p. 1931-1946, 2015. https://doi.org/10.1111/pce.12488 DOI: https://doi.org/10.1111/pce.12488

Edwards, S. et al. Flora of Ethiopia and Eritrea, Volume 2, part 1: Magnoliaceae to Flacourtiaceae. Addis Ababa, Ethiopia and Uppsala, Sweden: The National Herbarium, Addis Ababa University, 2000.

Edwards, S. et al. Flora of Ethiopia and Eritrea, volume 2, part 2: Canellaceae to Euphorbiaceae. Uppsala: The National Herbarium, Addis Ababa, Ethiopia, and Department of Systematic Botany, 1995.

Eggleston, S. (ed.). IPCC guidelines for national greenhouse gas inventories.Hayama:Institute for Global Environmental Strategies, 2006.

Evangelista, P. A profile of the mountain nyala (Tragelaphus buxtoni). African Indaba, v. 5, n. 2, p. 1-47, 2007.

Ethiopian Forestry Action Program. Final report: volume II: the challenge for development. Addis Ababa: Ministry of Natural Resources Development and Environmental Protection, 1994.

Fisaha, G. et al. Woody plants’ diversity, structural analysis and regeneration status of Wof Washa natural forest, North-east Ethiopia. African Journal of Ecology, v. 51, n. 4, p. 599-608, 2013. https://doi.org/10.1111/aje.12071. DOI: https://doi.org/10.1111/aje.12071

Franks, P. et al. Reconciling Forest conservation with food production in sub-Saharan Africa: case studies from Ethiopia, Ghana and Tanzania. [S.l.]: International Institute for Environment and Development, 2017.

Friis, I. et al. Atlas of the potential vegetation of Ethiopia. Addis Ababa: Addis Ababa University Press; Shama Books, 2010.

Gallery, R. E. Ecology of tropical rain forests. Ecology and the Environment, p. 1-22, 2014. https://doi.org/10.1007/978-1-4614-7612-2_4-1 DOI: https://doi.org/10.1007/978-1-4614-7612-2_4-1

Gebeyehu, G. et al. Carbon stocks and factors affecting their storage in dry Afromontane forests of Awi Zone, northwestern Ethiopia. Journal of Ecology and Environment, v. 43, n. 1, p. 7, 2019a. https://doi.org/10.1186/s41610-019-0105-8. DOI: https://doi.org/10.1186/s41610-019-0105-8

Gebeyehu, G. et al. Species composition, stand structure, and regeneration status of tree species in dry Afromontane forests of Awi Zone, northwestern Ethiopia. Ecosystem Health and Sustainability, v. 5, n. 1, p. 199-215, 2019b. https://doi.org/10.1080/20964129.2019.1664938. DOI: https://doi.org/10.1080/20964129.2019.1664938

Giday, K. et al. Effects of livestock grazing on key vegetation attributes of a remnant forest reserve: The case of Desa’a Forest in northern Ethiopia. Global Ecology and Conservation, v. 14, e00395, 2018. https://doi.org/10.1016/j.gecco.2018.e00395. DOI: https://doi.org/10.1016/j.gecco.2018.e00395

Girma, A. & Mosandl, R. Structure and potential regeneration of degraded secondary stands in munessa-shashemene forest, Ethiopia. Journal of Tropical Forest Science, p. 46-53, 2012. https://www.jstor.org/stable/23616951.

Girma, A. et al. Forest carbon stocks in woody plants of Mount Zequalla Monastery and its variation along altitudinal gradient: Implication of managing forests for climate change mitigation. Science, Technology and Arts Research Journal, v. 3, n. 2, p. 132-140, 2014. https://doi.org/10.4314/star. v3i2.17. DOI: https://doi.org/10.4314/star.v3i2.17

Gonçalves, F. M. et al. Tree species diversity and composition of Miombo woodlands in South-Central Angola: A chronosequence of forest recovery after shifting cultivation. International Journal of Forestry Research, v. 2017, article ID 6202093,2017. https://doi.org/10.1155/2017/6202093. DOI: https://doi.org/10.1155/2017/6202093

Group, A. P. An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III. Botanical Journal of the Linnean Society, v. 161, n. 2, 105-121, 2009. https://doi.org/10.1111/j.1095-8339.2009.00996.x. DOI: https://doi.org/10.1111/j.1095-8339.2009.00996.x

Hassen, M. Land tenure induced deforestation and environmental degradation in Ethiopia: the case of Arbagugu State Forest Development and Protection Project (a historical survey ca 1975-1991). Ethiopian Journal of the Social Sciences and Humanities, v. 9, n. 2, p. 37-64, 2013.

Hedberg, I. et al. Flora of Ethiopia and Eritrea. Vol. 4. Part 1, Apiaceae to Dipsacaceae. National Herbarium, Addis Ababa University, 2003.

Hedberg, I. et al. Flora of Ethiopia and Eritrea. Asteraceae volume 4 part 2. Ethiopia: Department of Systematic Botany, Uppsala University, Uppsala and the National Herbarium, Addis Ababa University, Addis Ababa, 2004

Hedberg, I. et al. Flora of Ethiopia and Eritrea. Vol. 3, Pittosporaceae to Araliaceae. National Herbarium, Addis Ababa University, 1989.

Hsieh, T. et al. iNEXT: an R package for rarefaction and extrapolation of species diversity (H ill numbers). Methods in Ecology and Evolution, v. 7, n. 12, p. 1451-1456, 2016. DOI: https://doi.org/10.1111/2041-210X.12613

Kebede, B. et al. Structure and regeneration status of Gedo dry evergreen montane forest, West Shewa Zone of Oromia National Regional State, Central Ethiopia. Science, technology and Arts Research Journal, v. 3, n. 2, p. 119-131, 2014. DOI: https://doi.org/10.4314/star.v3i2.16

Kent, M & Coker, P. Vegetation description and analysis: a practical approach. London: Belhaven Press, 1992. p. 20 - 38.

Khan, M. et al. Population structure of some tree species in disturbed and protected subtropical forests of north-east India. Acta Oecologica, v. 8, n. 3, p. 247-255, 1987.

Kidane, L. et al. The effects of disturbance on the population structure and regeneration potential of five dominant woody species–in Hugumburda-Gratkhassu National Forest Priority Area, North-eastern Ethiopia. African Journal of Ecology, v. 54, n. 1, p. 20-28, 2016. https://doi.org/10.1111/aje.12254. DOI: https://doi.org/10.1111/aje.12254

Kikoti, I. A. & Mligo, C. Impacts of livestock grazing on plant species composition in montane forests on the northern slope of Mount Kilimanjaro, Tanzania. International Journal of Biodiversity Science, Ecosystem Services & Management, v. 11, n. 2, p. 114-127, 2015. https://doi.org/10.1080/21513732.2015.1031179. DOI: https://doi.org/10.1080/21513732.2015.1031179

Lamprecht, H. Silviculture in the tropics: tropical forest ecosystems and their tree species: possibilities and methods for their long-term utilization. Eschborn: GTZ, 1989.

Lemenih, M.& Bongers, F. Dry forests of Ethiopia and their silviculture. Silviculture in the Tropics, v. 8, p. 261-272, 2011. https://doi.org/10.1007/978-3-642-19986-8_17. DOI: https://doi.org/10.1007/978-3-642-19986-8_17

Lewis, S. L. et al. Increasing human dominance of tropical forests. Science, v. 349, n. 6250, p. 827-832, 2015. https://doi.org/10.1126/science.aaa9932. DOI: https://doi.org/10.1126/science.aaa9932

Lewis, S. L. et al. Above-ground biomass and structure of 260 African tropical forests. Philosophical Transactions of the Royal Society B: Biological Sciences, v. 368, n. 1625, 20120295, 2013. https://doi.org/10.1098/rstb.2012.0295. DOI: https://doi.org/10.1098/rstb.2012.0295

Magurran, A. Measuring biological diversity. Malden: Blackwell Publications, 2004. https://doi.org/10.1016/j.cub.2021.07.049. DOI: https://doi.org/10.1016/j.cub.2021.07.049

Mallie, D. T. & Abraham, A. M. Governing computing proviso of habitation in the highland forest region: evidence from Arbagugu controlled hunting area, Oromia Regional State, Ethiopia. International Journal of African and Asian Studies, v. 46, 2018.

McNicol, I. M. et al. Aboveground carbon storage and its links to stand structure, tree diversity and floristic composition in south-eastern Tanzania. Ecosystems, v. 21, n. 4, p. 740-754, 2018. https://doi.org/10.1007/s10021-017-0180-6. DOI: https://doi.org/10.1007/s10021-017-0180-6

Mensah, S. et al. Aboveground biomass and carbon in a South African mistbelt forest and the relationships with tree species diversity and forest structures. Forests, v. 7, n. 4, p. 79, 2016. https://doi.org/10.3390/f7040079. DOI: https://doi.org/10.3390/f7040079

Mishra, B. et al. Effects of anthropogenic disturbance on plant diversity and community structure of a sacred grove in Meghalaya, northeast India. Biodiversity & Conservation, v. 13, n. 2, p. 421-436, 2004. https://doi.org/10.1023/B:BIOC.0000006509.31571.a0. DOI: https://doi.org/10.1023/B:BIOC.0000006509.31571.a0

Moges, Y. et al. Ethiopian forest resources: current status and future management options in view of access to carbon finances. Addis Ababa: Ethiopian Climate Research and Networking; The United Nations Development Programme, 2010.

Monge-González, M. L. et al. Response of tree diversity and community composition to forest use intensity along a tropical elevational gradient. Applied Vegetation Science, v. 23, n. 1, p. 69-79, 2020. https://doi.org/10.1111/avsc.12465. DOI: https://doi.org/10.1111/avsc.12465

Muller, E. et al. The state of the world’s forests: forest pathways to sustainable development’. Rome: FAO, 2018.

Nigussie, D. Land suitability Atlas for selected Crops of Ethiopia. Ethiopian Institute of Agricultural Research Addis Ababa, 34p. 2014.

Nune, S. et al. Forest resource accounts for Ethiopia: implementing environmental accounts. Dordrecht: Springer, 2013. p. 103-142. DOI: https://doi.org/10.1007/978-94-007-5323-5_5

Oksanen, J. et al. Vegan: Community Ecology Package. R package version 2.5-2. 2018’.2018.

Pan, Y. et al. A large and persistent carbon sink in the world’s forests. Science, v. 333, n. 6045, p. 988-993, 2011. https://doi.org/10.1126/science.1201609 DOI: https://doi.org/10.1126/science.1201609

Pearson, T. R. Measurement guidelines for the sequestration of forest carbon. Newtown Square: US Department of Agriculture, Forest Service, Northern Research Station, 2007. DOI: https://doi.org/10.2737/NRS-GTR-18

Rametsteiner, E. & Whiteman, A. State of the world’s forests: enhancing the socio-economic benefits from forests. Rome: FAO, 2014.

Roberts, P. et al. Finding the anthropocene in tropical forests. Anthropocene, v. 23, p. 5-16, 2018. https://doi.org/10.1016/j.ancene.2018.07.002. DOI: https://doi.org/10.1016/j.ancene.2018.07.002

Rodrigues, A. C.et al. Fine-scale topography shape richness, community composition, stem and biomass hyperdominant species in Brazilian Atlantic Forest. Ecological Indicators, v. 102, p. 208-217, 2019. https://doi.org/10.1016/j.ecolind.2019.02.033. DOI: https://doi.org/10.1016/j.ecolind.2019.02.033

Sharew, H. et al. Effects of ground preparation and microenvironment on germination and natural regeneration of Juniperus procera and Afrocarpus gracilior in Ethiopia. Forest Ecology and Management, v. 93, n. 3, p. 215-225, 1997. https://doi.org/10.1016/S0378-1127(96)03962-X. DOI: https://doi.org/10.1016/S0378-1127(96)03962-X

Shiferaw, W. et al. Anthropogenic effects on floristic composition, diversity and regeneration potential of the Debrelibanos Monastery Forest patch, central Ethiopia. Journal of Forestry Research, v. 30, p. 6, 2151-2161, 2019. https://doi.org/10.1007/s11676-018-0782-7. DOI: https://doi.org/10.1007/s11676-018-0782-7

Siraj, M. Forest carbon stocks in woody plants of Chilimo-Gaji Forest, Ethiopia: Implications of managing forests for climate change mitigation. South African Journal of Botany, v. 127, p. 213-219, 2019. https://doi.org/10.1016/j.sajb.2019.09.003. DOI: https://doi.org/10.1016/j.sajb.2019.09.003

Ssegawa, P.& Nkuutu, D. N. Diversity of vascular plants on Ssese islands in Lake Victoria, central Uganda. African Journal of Ecology, v. 44, n. 1, p. 22-29, 2006. https://doi.org/10.1111/j.1365-2028.2006.00609.x. DOI: https://doi.org/10.1111/j.1365-2028.2006.00609.x

Tadele, D. et al. Floristic diversity and regeneration status of woody plants in Zengena Forest, a remnant montane forest patch in northwestern Ethiopia. Journal of Forestry Research, v. 25, n. 2, p. 329-336, 2014. https://doi.org/10.1007/s11676-013-0420-3. DOI: https://doi.org/10.1007/s11676-013-0420-3

Tadesse, G. et al. Effects of land-use changes on woody species distribution and above-ground carbon storage of forest-coffee systems. Agriculture, Ecosystems & Environment, v. 197, p. 21-30, 2014. https://doi.org/10.1016/j.agee.2014.07.008. DOI: https://doi.org/10.1016/j.agee.2014.07.008

Teketay, D. Deforestation, wood famine, and environmental degradation in Ethiopia’s highland ecosystems: urgent need for action. Northeast African Studies, v. 8, 20010101, p. 53-76, 2001. https://www.jstor.org/stable/41931355. DOI: https://doi.org/10.1353/nas.2005.0020

Teketay, D. Seed and regeneration ecology in dry Afromontane forests of Ethiopia: I. Seed production-population structures. Tropical Ecology, v. 46, n. 1, p. 29-44, 2005.

Teketay, D. et al. Forest resources and challenges of sustainable forest management and conservation in Ethiopia. Routledge: Degraded Forests in Eastern Africa, 2010. p. 31-75.

Tesfaye, G. et al. Regeneration of seven indigenous tree species in a dry Afromontane Forest, southern Ethiopia. Flora-Morphology, Distribution, Functional Ecology of Plants, v. 205, n. 2, p. 135-143, 2010. https://doi.org/10.1016/j.flora.2008.12.006. DOI: https://doi.org/10.1016/j.flora.2008.12.006

Tesfaye, A. et al. Variation in carbon concentration and wood density for five most commonly grown native tree species in central highlands of Ethiopia: The case of Chilimo dry Afromontane Forest. Journal of Sustainable Forestry, v. 38, n. 8, p. 769-790, 2019. https://doi.org/10.1080/10549811.2019.1607754. DOI: https://doi.org/10.1080/10549811.2019.1607754

Tilahun, A. et al. Floristic composition and community analysis of Menagesha Amba Mariam Forest (Egdu forest) in central Shewa, Ethiopia. Ethiopian Journal of Biological Science, v. 10, n. 2, p. 111-136, 2011.

Van Gemerden, B. S. et al. The pristine rain forest? Remnants of historical human impacts on current tree species composition and diversity. Journal of Biogeography, v. 30, n. 9, p. 1381-1390, 2003. https://doi.org/10.1046/j.1365-2699.2003.00937.x. DOI: https://doi.org/10.1046/j.1365-2699.2003.00937.x

Walter, H. & Lieth, H. Klimadiagramm-Weltatlas. Gustav Fischer Verlag, Jena, 1967. 250 p.

Wassie, A. et al. Effects of livestock exclusion on tree regeneration in church forests of Ethiopia. Forest Ecology and Management, v. 257, n. 3, p. 765-772, 2009. https://doi.org/10.1016/j.foreco.2008.07.032. DOI: https://doi.org/10.1016/j.foreco.2008.07.032

Woldearegay, M. et al. Species diversity, population structure and regeneration status of woody plants in Yegof dry Afromontane Forest, Northeastern Ethiopia. European Journal of Advanced Research in Biological and Life Sciences, v. 6, n. 4, 2018.

Yahya, N. et al. Forest cover dynamics and its drivers of the Arba Gugu forest in the Eastern highlands of Ethiopia during 1986–2015. Remote Sensing Applications: Society and Environment, v. 20, 100378, 2020. https://doi.org/10.1016/j.rsase.2020.100378. DOI: https://doi.org/10.1016/j.rsase.2020.100378

Yahya, N. et al. Species diversity, population structure and regeneration status of woody species on Yerer Mountain Forest, Central Highlands of Ethiopia. Tropical Plant Research, v. 6, 20190831, 2019. https://doi.org/10.22271/tpr.2019.v6.i2.030. DOI: https://doi.org/10.22271/tpr.2019.v6.i2.030

Yirga, F. et al. Impact of altitude and anthropogenic disturbance on plant species composition, diversity, and structure at the Wof-Washa highlands of Ethiopia. Heliyon, v. 5, n. 8, e02284, 2019. https://doi.org/10.1016/j.heliyon.2019.e02284. DOI: https://doi.org/10.1016/j.heliyon.2019.e02284

Yohannes, H. et al. Carbon stock analysis along forest disturbance gradient in Gedo forest: implications of managing forest for climate change mitigation. Journal of Ecosystem and Ecography, v. 5, p. 1-5, 2015. https://doi.org/10.4172/2157-7625.1000170. DOI: https://doi.org/10.11648/j.ajep.20150405.14

Zanne, A. E. et al. Global wood density database, Dryad. 2009. Available at: http://hdl.handle.net/10255/dryad, 235. Access on: 1 Nov. 2020.