Stand structure, diversity, and carbon stock assessment of Lake Duluti Forest Reserve in Tanzania
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Abstract. Mfinanga US, Mwakalukwa EE. 2025. Stand structure, diversity, and carbon stock assessment of Lake Duluti Forest Reserve in Tanzania. Nusantara Bioscience 17: 185-193. For a successful conservation of biodiversity in a particular forest, assessment of its status and underlying threats is important. Estimation of carbon stocks locked up in the forest is also key in designing the required climate change mitigation options. However, there is limited information on the biodiversity status and carbon storage potential of many forest reserves in Tanzania. This study assessed the tree and shrub species diversity, composition, stand structure, and carbon stock potential of the Lake Duruti Forest Reserve (LDFR). Data were collected from 40 systematically established concentric plots (0.071 ha each) covering a total forest area of 26.24 ha. A total of 48 tree and shrub species were recorded, comprising both adult individuals (DBH ? 5 cm) and regenerants (DBH < 5 cm), representing 25 plant families. Adult individuals accounted for 42 species from 23 families, while regenerants included 22 species from 15 families. The Shannon-Wiener diversity index (H?) was 3.21 for adults and 2.80 for regenerants, indicating high species diversity. The mean stem density of adult trees was 197 ± 97 stems ha?¹, with a basal area of 16.27 ± 7.30 m² ha?¹. The estimated above-ground carbon stock was 79.24 ± 35.31 Mg C ha?¹, while below-ground carbon stock was 30.86 ± 12.77 Mg C ha?¹. The absence of visible anthropogenic disturbance suggests effective conservation measures are in place. These findings highlight the ecological stability and carbon sequestration potential of LDFR and highlight the need for strategic planning to enhance biodiversity conservation and carbon stock management.
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Asrat F, Soromessa T, Bekele T, Kurakalva RM, Guddeti SS, Smart DR, Steger K. 2022. Effects of environmental factors on carbon stocks of dry evergreen afromontane forests of the Choke Mountain Ecosystem, Northwestern Ethiopia. Intl J For Res 2022: 9447946. DOI: 10.1155/2022/9447946.
Daba DE, Dullo BW and Soromessa T. 2022. Effect of forest management on carbon stock of tropical moist afromontane forest. Intl J For Res. DOI: 10.1155/2022/3691638.
Gebeyehu G, Soromessa T, Bekele T, Teketay D. 2019. Carbon stocks and factors affecting their storage in dry afromontane forests of Awi Zone, North-western Ethiopia. J Ecol Environ 43: 7. DOI: 10.1186/s41610-019-0105-8.
Iddi S. 1998. Eastern Arc Mountains and their national and global importance. J East Afr Nat Hist 87: 19-26. DOI: 10.2982/0012 8317(1998)87[19:EAMATN]2.0.CO;2.
Kacholi DS, Whitbread AM, Worbes M. 2015. Diversity, abundance, and structure of tree communities in the Uluguru forests in the Morogoro region, Tanzania. J For Res 26 (3): 557-569. DOI 10.1007/s11676 015-0078-0.
Kent M. 2012. Vegetation Description and Analysis, A Practical Approach, 2nd edition. Wiley-Blackwell, John Wiley & Sons, Hoboken, NJ, USA.
Kent M, Coker P. 1992. Vegetation description and analysis. A practical approach. London: Belhaven Press. 363 p.
Lovett JC, Pocs T. 1993. Assessment of the Condition of the Catchment Forest Reserves: A Botanical Appraisal, Government Printers, Dar es Salaam.
Magurran AE. 2004. Measuring Biological Diversity. BlackWell, Oxford, UK.
Manyanda BJ, Nzunda EF, Mugasha WA, Malimbwi RE. 2020. Estimates of volume and carbon stock removals in Miombo Woodlands of Mainland Tanzania. Intl J For Res. DOI: 10.1155/2020/4043965.
Masota AM, Bollandsås OM, Zahabu E, Eid T. 2016. Allometric biomass and volume models for lowland and humid montane forests. In: Malimbwi RE, Eid T, Chamshama SAO (eds). Allometric Tree Biomass and Volume Models in Tanzania. Department of Forest Mensuration and Management, Sokoine University of Agriculture, Tanzania.
Mauya EW, Madundo S. 2021. Aboveground biomass and carbon stock of usambara tropical rainforests in Tanzania. Tanz J Forest Nature Conserv 90 (2): 63-82.
Mialla YS. 2002. Participatory Forest Resource Assessment and Zonation in Monduli Catchment Forest Reserve, Arusha, Tanzania [Dissertation]. Sokoine University of Agriculture, Morogoro. [Tanzania].
MNRT. 2015. National Forest Resources Monitoring and Assessment of Tanzania mainland (NAFORMA). Main results.
Mwakalukwa EE, Mwakisu A, Maliondo SMS. 2023a. Woody species diversity, composition, structure and carbon storage of a dry evergreen montane forest of Essimingor Nature Forest Reserve in Tanzania. Intl J Trop Drylands 7(1): 26-36. DOI: 10.13057/tropdrylands/t070104.
Mwakalukwa EE, Mwakisu A, Madundo S, Maliondo SMS. 2023b. Vegetation composition, diversity, stand structure, and carbon storage of Lolkisale Village Land Forest Reserve in the Northeastern part of Tanzania. Nusant Biosci 15(1): 79-90. DOI: 10.13057/nusbiosci/n150109.
Mwaluseke ML, Mwakalukwa EE, Maliondo SMS. 2023. Vegetation composition, diversity, stand structure and carbon stock of a dry evergreen montane forest of Lendikinya forest reserve in Tanzania. Biodiversitas 24(1): 551-562. DOI: 10.13057/biodiv/d240164.
Naveenkumar J, Arunkumar KS, Sundarapandian SM. 2017. Biomass and carbon stocks of a tropical dry forest of the Javadi Hills, Eastern Ghats, India. Carbon Manag 8(5-6):351-361. DOI.10.1080/17583004.2017.1362946.
Noumi E. 2015. Floristic structure and diversity of a tropical sub-montane evergreen forest, in the Mbam Minkom Massif (Western Yaoundé). J biol life sci 6(1):149-193. DOI.10.5296/jbls.v6i1.7028.
Ract C, Burgess ND, Dinesen L, Sumbi P, Malugu I, Latham J, Anderson L, Gereau RE, de Lima MG, Akida A, Nashanda E, Shabani Z, Tango Y, Mteleka S, Silayo DS, Mwangi J, Lyatuu G, Platts PJ, Rovero F. 2024. Nature Forest Reserves in Tanzania and their importance for conservation. PLoS ONE 19(2): e0281408. DOI.10.1371/journal.pone.0281408.
Shirima DD, Totlanda Ø, Munishi PKT, Moea SR. 2015. Relationships between tree species richness, evenness and aboveground carbon storage in montane forests and miombo woodlands of Tanzania. Basic Appl Ecol 16: 239-249. DOI: 10.1016/j.baae.2014.11.008.
Sitati N, Gichohi N, Lenaiyasa P, Maina M, Warinwa F, Muruthi P, Sumba D, Mandima J. 2016. Tree Species Diversity and Dominance in Ketumbeine Forest Reserve, Tanzania. J Biodivers Manage Forestry 5:3. DOI: 10.4172/2327 4417.1000161.
Sitati N, Gichohi N, Lenaiyasa P, Millanga P, Maina M, Warinwa F, Muruthi P. 2014. Tree species diversity and dominance in Gelai Forest Reserve, Tanzania. J En & Nat Res 3 (3): 31-37. DOI:10.11648/j.jenr.20140303.12.
Swai G, Ndangalasi HJ, Munishi PKT, Shirima DD. 2014. Carbon stocks of Hanang forest, Tanzania: An implication for climate mitigation. J Ecol Nat Environ 6 (3): 90-98. DOI:10.5897/JENE2013.0418.
Teshager Z, Argaw M, Eshete A. 2018. Woody species diversity, structure and regeneration status in Weiramba forest of Amhara region, Ethiopia: implications of managing forests for biodiversity conservation. J Nat Sci Res 8(5): 16-31.
TFS 2022. Five years management plan for lake Duluti forest reserve 2022/23 - 2026/27 (Draft). Ministry of Natural Resources and Tourism. 85p.
Tynsong H, Dkhar M, Tiwari BK. 2022. Tree diversity and vegetation structure of the tropical evergreen forests of the southern slopes of Meghalaya, North East India. Asian J For 6 (1): 22-36. DOI: 10.13057/asianjfor/r060104.
URT 1998. The National Forest Policy. Forestry and Beekeeping Division. Ministry of Natural Resource and Tourism. Dar es Salaam. 48 pp.
URT 2015 National Biodiversity Strategy and Action Plan (NBSAP) 2015 2020. Vice President's Office, Division of Environment, United Republic of Tanzania, Dar es salaam. 137 pp.
URT 2021a. The Budget speech for the Ministry of Natural Resources and Tourism in the year 2022/2023. Minister for Natural Resources and Tourism. Dodoma. 163pp.
URT 2021b. National Forest Policy Implementation Strategy (2021 - 2031). United Republic of Tanzania. Ministry of Natural Resources and Tourism. 73 pp.
Wondimu MT, Nigussie ZA, Yusuf MM. 2021. Tree species diversity predicts aboveground carbon storage through functional diversity and functional dominance in the dry evergreen Afromontane forest of Hararghe highland, Southeast Ethiopia. Ecol Process 10: 47. DOI: 10.1186/s13717-021-00322-4.