Changes in Structure, Tree Species Composition, and Diversity of the Abu Geili Riverine Forest Reserve, Sinnar State, Sudan
DOI:
https://doi.org/10.37045/aslh-2024-0004Keywords:
Trees species diversity, AbuGeili forest conservation, Biodiversity indices analysis, Forest ecosystem managementAbstract
This study assesses the structure, composition, diversity, and conservation status of the Abu Geili Riverine Forest Reserve (AGRFR), Sudan, to evaluate changes in these attributes between 2011 and 2021. Thirty sample plots (radius = 17.84 m) were established systematically. The distance between plots was 50 m and 100 m between survey lines to facilitate the identification, counting, and measuring of diameter at breast height (DBH) and height of all living trees and compare that with 2011 data. The results identified 462 trees across 32 species and 15 families in 2021, reflecting an increase in species and family diversity from 2011, which reported 626 trees from 23 species and 12 families. The Fabaceae family was most dominant, with ten species in 2021 and six in 2011. In both years, the Miliaceae and Moraceae had three species each. Three of the four calculated diversity indices displayed increasing trends, highlighting the rich diversity of the area and its importance for conservation and management.
References
Abdelrahim, M., 2015. Contribution of non-wood forest products in support of livelihoods of rural people living in the area south of Blue Nile State, Sudan. International Journal of Agriculture, Forestry and Fisheries 3, 189–194.
Abdullahi, I.N., 2021. Parkland trees under severe drought: An assessment of species diversity and abundance across three agroecological zones of Northern Nigeria. Open Journal of Forestry 11(2), 117–134. https://doi.org/10.4236/ojf.2021.112009
Adekunle, V.A.J., Olagoke, A.O., 2008. Diversity and biovolume of tree species in natural forest ecosystem in the bitumen-producing area of ondo state, Nigeria: a baseline study. Biodiversity and Conservation 17, 2735–2755. https://doi.org/10.1007/s10531-007-9279-y
Adekunle, V.A.J., Olagoke, A.O., Akindele, S.O., 2013. Tree species diversity and structure of a Nigeria strict nature reserve. Tropical Ecology 54(3), 275–289.
Aigbe, H.I., Akindele, S.O., Onyekwelu, J.C., 2014. Tree species diversity and density pattern in Afi River Forest Reserve, Nigeria. International Journal of Scientific and Technology Research 3(10), 178–185. https://doi.org/10.5296/jas.v3i1.6461
Akindele, S.O., 2013. Tree species diversity and structure of a Nigerian strict nature reserve. Tropical Ecology 54(3), 275–289.
Alcamo, J., Schaldach, R., Koch, J., Kölking, C., Lapola, D., Priess, J., 2011. Evaluation of an integrated land use change model including a scenario analysis of land use change for continental Africa. Environmental Modelling & Software 26(8), 017–1027. https://doi.org/10.1016/j.envsoft.2011.03.002
Asner, G.P., Knapp, D.E., Broadbent, E.N., Oliveira, P.J., Keller, M., Silva, J.N., 2005. Selective logging in the Brazilian Amazon. Science 310(5747), 480–482. https://doi.org/10.1126/science.1118051
Dafa-Alla, D.A.M., Abuelbasher, A.I., Gibreel, H.H., Yagoub, Y.E., Siddig, A.A.H., Hasoba, A.M.M., 2022. Assessing trees diversity in Jebel Elgarrie Forest Reserve in the Blue Nile State, Sudan. Journal of Forest and Environmental Science 38(3), 174–183. https://doi.org/10.7747/JFES.2022.38.3.174
Debebe, B., Senbeta, F., Teferi, E., Diriba, D., Teketay, D., 2023. Analysis of forest cover change and its drivers in biodiversity hotspot areas of the semien mountains national Park, northwest Ethiopia. Sustainability 15(4), p.3001. https://doi.org/10.3390/su15043001
Edet, D.I., Ijeomah, H.M., Ogogo, A.U., 2012. Preliminary assessment of tree species diversity in Afi Mountain Wildlife Sanctuary, Southern Nigeria. Agriculture and biology journal of North America 3(12), 486–492. https://doi.org/10.5251/abjna.2012.3.12.486.492
Elsiddig E. A., 2002. The management of Acacia nilotica, L plantation along the Blue Nile flood basins in Sudan for sustainable production: A review. University of Khartoum Journal of Agricultural Sciences 10(1), 119–130.
Fahmi, M.K.M., 2017. Climate, Trees and Agricultural Practices: Implications for Food Security in The Semi-Arid Zone of Sudan. PhD dissertation, University of Helsinki, Helsinki Finland. p 70.
FAO., 2009. The State of the World’s Forests. Food and Agriculture Organization of the United Nations, Rome, 2009.
FAO., 2010. Global Forest Resources Assessment Food and Agriculture Organization of the United Nations, Rome, 2010.
Frerebeau, N., 2019. Diversity Measures. https://cran.r-project.org/web/packages/tabula/
Gamito, S., (2010). Caution is needed when applying Margalef diversity index. Ecological Indicators 10, 550–551. https://doi.org/10.1016/j.ecolind.2009.07.006
Gurashi N.A., 2022. Estimation of Biomass, Carbon Stocks and sequestration of Eucalyptus camaldulensisDehnh. Plantations in AbuGeili forest, Sudan. Agriculture and Forestry Journal 6(1), 55–60. https://doi.org/10.46325/afj.v6i1.118
Hadi, S., Ziegler, T., Waltert, M., Hodges, J.K., 2009. Tree diversity and forest structure in northern Siberut, Mentawai islands, Indonesia. Tropical Ecology 50(2), 315–327.
Ibrahim, E., Osman, E., 2014. Diameter at breast height-crown width prediction models for Anogeissus leiocarpus (DC.) Guill &Perr and Combretum hartmannianum Schweinf. Journal of Forest Products & Industries 3(4), 191–197.
Ibrahim, E., Osman, E., Idris, E., Yousif, T., 2015. Linear and Non-Linear Regression Equations for Estimating the Crown Diameter of Three Sudanese Edible Trees. Journal of Forest Products & Industries 4(2), 44–52.
Idrissa, B., Soumana, I., Issiaka, Y., Karimou, A., Mahamane, A., Mahamane, S., Weber, J., 2018. Trend and Structure of Populations of Balanites aegyptiaca in Parkland Agroforestsin Western Niger. Annual Research & Review in Biology 22(4), 1–12. https://doi.org/10.9734/arrb/2018/38650
Ihenyen, J., Okoegwale, E.E., Mensah, J.K., 2009. Composition of tree species in Ehor forest reserve, Edo State, Nigeria. Nature and science 7(8), 8–18.
IUCN., 2010. Plants under pressure – a global assessment. “The first report of the IUCN Sampled Red List Index for Plants.‖ Royal Botanic Gardens, Kew, UK, Natural History Museum, London, and International Union for Conservation of Nature.
Kumar, A., Gupta, A.K., Marcot, B.G., Saxena, A., Singh, S.P., Marak, T.T.C., 2006. Management of forests in India for biological diversity and forest productivity, a new perspective. Volume IV: Garo Hills Conservation Area (GCA). Wildlife Institute of India–USDA Forest Service collaborative project report, Wildlife Institute of India, Dehra Dun, India, 206.
Liu, Y., Wang, L., Xia, J., Guo, H., Wang, J., 2024. Ozone enrichment and drought stress have more negative effects on invasive leguminous woody species than co-occurring native species. Environmental and Experimental Botany 217, 105580. https://doi.org/10.1016/j.envexpbot.2023.105580
Lu, Y., Zhang, B., Zhang, M., Jie, M., Guo, S., Wang, Y., 2023. Relict Plants Are Better Able to Adapt to Climate Change: Evidence from Desert Shrub Communities. Plants 12(23), p.4065. https://doi.org/10.3390/plants12234065
Maua, J.O., Tsingalia, H.M., Chebiowo, J., Odee, D., 2020. Population structure and regeneration status of woody species in a remnant tropical forest: a case study of South Nandi forest, Kenya. Global Ecology and Conservation 21, e00820. https://doi.org/10.1016/j.gecco.2019.e00820
Mohammed, E.M.I., 2019. Impact of land use practices on the natural forest in Dinder Biosphere Reserve and it’s surrounding areas - Sudan (Issue March). University of Bahri.
Mohammed, E.M.I., Elhag, A.M.H., Ndakidemi, P.A.,Treydte, A.C., 2021c. Anthropogenic pressure on tree species diversity, composition, and growth of Balanites aegyptiaca in Dinder Biosphere Reserve, Sudan. Plants, 10(483), 1–18. https://doi.org/10.3390/plants10030483
Mohammed, E.M.I., Hamed, A. M. E., Ndakidemi, P. A., Treydte, A. C., 2021b. Illegal harvesting threatens fruit production and seedling recruitment of Balanites aegyptiaca in Dinder Biosphere Reserve, Sudan. Global Ecology and Conservation, 29, e01732. https://doi.org/10.1016/j.gecco.2021.e01732
Mohammed, E.M.I., Hamid, E.A.M., Ndakidemi, P.A., Treydte, A.C., 2022. The stocking density and regeneration status of Balanites aegyptiaca in Dinder Biosphere Reserve, Sudan. Trees, Forests and People 8, 1–8. https://doi.org/10.1016/j.tfp.2022.100259
Mohammed, E.M.I., Hassan, T.T., Idris, E.A., Abdel-Magid, T.D., 2021a. Tree population structure, diversity, regeneration status, and potential disturbances in Abu Gadaf natural reserved forest, Sudan. Environmental Challenges 5, 100366. https://doi.org/10.1016/j.envc.2021.100366
Mukhtar, M. E., 2002. Biodiversity in Forest Plants of Sudan, Higher Council for Environmental and Natural Resources (HCENR), Biodiversity Series -1 (SUD/97/G31/A/IG, Khartoum -2002.
Musa, F.I., Mohammed, M.H., Fragallah, S.D.A., Adam, H.E., Sahoo, U.K., 2024. Current status of tree species diversity at Abu Gadaf Natural Forest Reserve, Blue Nile Region – Sudan. Vegetos 37, 1760–1771. https://doi.org/10.1007/s42535-024-00931-2
Ogwu, M.C., Osawaru, M.E., Obayuwana, O.K., 2016. Diversity and abundance of tree species in the University of Benin, Benin City, Nigeria. Applied Tropical Agriculture 21(3), 46–54.
Oke, D.O., Jamala, G.Y., 2013. Traditional agroforestry practices and woody species conservation in the derived savanna ecosystem of Adamawa state, Nigeria. Biodiversity Journal 4(3), 427–434. https://doi.org/10.5897/JSSEM2013.0400
Okey, I.B., Igiri, M.R., Ijomah, J.U., 2022. Evaluation of Trees Species Diversity, Abundance and Soil Physicochemical Properties of Ukpon River Forest Reserves, Cross River, Nigeria. Asian Journal of Research in Agriculture and Forestry 109–122. https://doi.org/10.9734/ajraf/2022/v8i4170
Okpiliya, F.I., 2012. Ecological Diversity Indices: Any Hope for One Again? Journal of Environment and Earth Science 2(10), 45–52.
Ouedraogo, I., Tigabu, M., Savadogo, P., Compaoré, H., Oden, P.C., Ouadba, J.M., 2010. Land cover change and its relation with population dynamics in Burkina Faso, West Africa. Land Degradation & Development 21(5), 453–462. https://doi.org/10.1002/ldr.981
Pragasan, L.A., Parthasarathy, N., 2010. Landscape-level tree diversity assessment in tropical forests of southern Eastern Ghats, India. Flora-Morphology, Distribution, Functional Ecology of Plants 205(11), 728–737. https://doi.org/10.1016/j.flora.2010.04.011
Rajasugunasekar, D., Patel, A.K., Devi, K.B., Singh, A., Selvam, P., Chandra, A., 2023. An Integrative Review for the Role of Forests in Combating Climate Change and Promoting Sustainable Development. International Journal of Environment and Climate Change 13(11), 4331–4341. https://doi.org/10.9734/ijecc/2023/v13i113614
Serbouti, S., Ettaqy, A., Boukcim, H., Mderssa, M.E., El Ghachtouli, N., Abbas, Y., 2023. Forests and woodlands in Morocco: review of historical evolution, services, priorities for conservation measures and future research. International Forestry Review 25(1), 121–145. https://doi.org/10.1505/146554823836838745
Shannon, C. E., Weaver, W., 1949. The Mathematical Theory of Communication. Urbana, IL: The University of Illinois Press, USA, 1–117.
Ulyshen, M., Urban‐Mead, K.R., Dorey, J.B., Rivers, J.W., 2023. Forests are critically important to global pollinator diversity and enhance pollination in adjacent crops. Biological Reviews 98(4), 1118–1141. https://doi.org/10.1111/brv.12947
UNEP., 2007. Global Environment Outlook 4. United Nations Environment Programme, Nairobi, 2007.
Wilfahrt, P.A., Seabloom, E.W., Bakker, J.D., Biederman, L., Bugalho, M.N., Cadotte, M.W., Caldeira, M.C., Catford, J.A., Chen, Q., Donohue, I., Ebeling, A., 2023. Nothing lasts forever: Dominant species decline under rapid environmental change in global grasslands. Journal of Ecology 111(11), 2472–2482.
Yakubu, M., Saka, M.G., Sa’idu, I., Mahmud, W.A., Yunus, A.U., 2020. Assessment of the Checklist and Regeneration Status Potential of Species Seedlings and Saplings of Baturiya Hadejia Wetland Game Reserve, Jigawa State, Nigeria. Global Advanced Research Journal of Agricultural Science 9,19–26.
Yasin, E.H.E., Mulyana, B., 2022. Spatial distribution of tree species composition and carbon stock in Tozi tropical dry forest, Sinnar State, Sudan. Biodiversitas Journal of Biological Diversity 23(5), 2359–2368. https://doi.org/10.13057/biodiv/d230513
Yeom, D.J., Kim, J.H., 2011. Comparative evaluation of species diversity indices in the natural deciduous forest of Mt. Jeombong. Forest Science and Technology 7(2), 68–74. https://doi.org/10.1080/21580103.2011.573940

Downloads
Published
How to Cite
Issue
Section
License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.