Ecological studies on introduction of alien species (Clerodendrum paniculatum Linn) in Forest Plantation and Nature Reserve Forest of Tropical Africa, Nigeria

Research Articles | Published:

Print ISSN : 0970-4078.
Online ISSN : 2229-4473.
Pub Email:
Doi: 10.1007/s42535-021-00313-y
First Page: 306
Last Page: 316
Views: 806

Keywords: Conservation ecology, Clerodendrum paniculatum , Alien plant species, Invasive species in Africa, Strict Nature Reserve, Biodiversity in Africa, Biodiversity in Nigeria, Parks management, Forest Plantation


Clerodendrum paniculatum L, a known alien species discovered in Akure forest where it’s seen co-habiting with native plant mostly at the forest road edge of the study area. Its advent into the ecosystem was not known but its occurrence in the Strict Nature Reserve indicated early stages of invasion which called for early effective management control. The assessment of C. paniculatum was aimed at reporting the ecological characters and its impact on the current status of protected area in Nigeria. The species composition of the study areas was sampled and analyzed by establishing four sample plots of 400 m2 in each area. Data gathered were analyzed using diversity indices to estimate the Shannon-Wienner, species evenness, richness, relative density etc. to know the impact of the species on the two areas and multivariate clustering graph were also employed to explain the variations of the two area. 61 number of plant species of C. paniculatum were recorded only in Forest Plantation from the total of 432 plants, and 3 in Strict Nature Reserve from 396. C. paniculatum spatial distribution and dominance were more prevalent in Forest Plantation with the relative density of 14.1 than Strict Nature Reserve with, 0.75. This species of plant is relatively dominant in Forest Plantation which could be due to its tolerant capacity to light and spatial distribution. Moreover, high species diversity of the species undergrowth of Shannon-Wienner diversity index of 2.9 and species evenness of 0.48 was reported to be a contributing factor. This present result shows that C. paniculatum is still at the early stage in the study areas but the results show species abundance and the ecological impact on the study areas. Efforts to eradicate it in the protected areas is imminent to forest management by the way of mechanical uprooting and immediate road edge rehabilitation with native species.

Conservation ecology, 
                Clerodendrum paniculatum
              , Alien plant species, Invasive species in Africa, Strict Nature Reserve, Biodiversity in Africa, Biodiversity in Nigeria, Parks management, Forest Plantation

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Bijmoer R, Scherrenberg M, Creuwels J (2021). Naturalis Biodiversity Center (NL) - Botany. Naturalis Biodiversity Center. Occurrence dataset (Accessed Sept 2021).

Ugbogu O, Osiyemi O, Chukwuma E, Adeniji K, Odewo A, Okanlawon T, Soyewo T, Oyebola T, Aina S (2019). Some angiosperm data of the forest herbarium ibadan (FHI) Nigeria. Version 1.8. Forestry Research Institute of Nigeria. (Accessed 2 Oct 2021).

Aigbokhan EI, Ekutu O (2012) Aspects of the Biology and Ecology of Euphorbia graminea Jacq (Euphorbiaceae)–A Potentially Invasive Herbaceous Plant in Nigeria. Nig J Botany 25(1):35–53

Ajao AA, Moteetee AN (2017) Tithonia diversifolia (Hemsl) A Gray (Asteraceae: Heliantheae), an invasive plant of significant ethnopharmacological importance: a review. South Afr J Botany 113(2017):396–403

Akomolafe GF, Rahmad ZB (2021) Colonization of Pneumatopteris afra (Christ) Holttum and its impact on some resident wetland communities in Nigeria. Acta Ecol Sinica.

Bhat GK (2014) Flora of South Kanara; Dakshina Kannada and Udupi districts of Karnataka. Curr Science-Bangal 107(9):1603

Borokini TI (2011) Invasive alien plant species in Nigeria and their effects on biodiversity conservation. Trop Conserv Sci 4(1):103–110

Brundu G, Pauchard A, Pyšek P, Pergl J, Bindewald AM, Brunori A, Canavan S, Campagnaro T, Celesti-Grapow L, Dechoum M, Dufour-Dror J, Essl F, Flory SL, Genovesi P, Guarino F, Guangzhe L, Hulme PE, Jager H, Kettle CJ, Krumm F, Langdon B, Lapin K, Lozano V, Roux JJ, Novoa A, Nuñez MA, Porte AJ, Silva JS, Schaffner U, Sitzia T, Tanner R, Tshidada N, Vitkova M, Westergren M, Wilson JRU, Richardson DM (2020) Global guidelines for the sustainable use of non-native trees to prevent tree invasions and mitigate their negative impacts. NeoBiota 61:65–116.

CAB (2020) CAB International datasheets Clerodendrum paniculatum (pagoda flower). Invasive species compendium, detailed coverage of invasive species threatening livehoods and the environment worldwide.

Cantino PD, Harley RM, Wagstaff SJ (1992) Genera of labitae: status and classification. In: Harley RM, Reynolds T (eds) Advances in Labiate Science. Royal Botanic Gardens, pp 511–523

Chen S, Michael GG (1994) Verbenaceae. Flora of China 17:1–49

Chong KY, Tan HTW, Corlett RT (2009) A checklist of the total vascular plant flora of Singapore: native, naturalised and cultivated species, Singapore: Raffles Museum of Biodiversity Research, National University of Singapore, pp 273.

Constán-Nava S, Soliveres S, Torices R, Serra L, Bonet A (2015) Direct and indirect effects of invasion by the alien tree Ailanthus altissima on riparian plant communities and ecosystem multifunctionality. Biol Invas 17(4):1095–1108

Davis MA, Thompson K (2000) Eight ways to be a colonizer; two ways to be an invader. Bull Ecol Soc Am 81:226–230

Debnath B, Das SK, Debnath A (2021) Diversity, community characteristics and regeneration status of tree species in Rowa Wildlife Sanctuary: an Indo-Burmese Hotspot—Tripura, North East India. Vegetos 34:153–160.

Deori C, Roy DK, Talukdar SR (2012) Clerodendrum paniculatum L. (Verbenaceae): a new record to Northeast India from Barnadi wildlife sanctuary. Assam J Econ Taxon Bot 36(4):835–836

Englberger K (2009) Invasive weeds of Pohnpei: A guide for identification and public awareness. Conservation Society of Pohnpei, p 2

Flora of China Editorial Committee, (2020) Flora of China. In: Flora of China St. Louis, Missouri and Cambridge, Massachusetts. Missouri Botanical Garden and Harvard University

Harley RM, Atkins S, Budantsev PD, Cantino PD, Conn BJ, Grayer R, Harley MM, DeKok R, Kresstovskaja T, Morales R, Paton AJ, Ryding O, Upson T (2004) Labiatae. In: Kubitzki K (ed) The families and genera of vascular plants: flowering plant-dicotyledons, vol 7. Springer-Verlag, pp 1–199

Hutchinson J, Dalziel JM, Hepper FN (1963) Flora of West Tropical Africa. Crown Agents, pp 1613–1622

John and Jacq’s Garden (2017) Clerodendrum paniculatum with spectacular pagoda-shaped flowers.

Kent M, Coker P (1992) Vegetation description and analysis: a practical approach. John Wiley and Sons, pp 167–169

Kew (2013) Clerodendrum paniculatum (pagoda flower), Kew Royal Botanic Gardens (online). Kew

Leeratiwong C, Chantaranothai P, Paton AJ (2011) A synopsis of the genus Clerodendrum L. (Lamiaceae) in Thailand. Trop Nat History 11(2):177–211

Margalef R (1958) Information theory in ecology. Gen Syst 3:36–71

Melapu VK, Joginipelli S, Naidu BVA, Darsey J (2015) A comparative phylogenetic evaluation of chloroplast ITS sequences to analyze the bioactivity in medicinal plants: a case study of Clerodendrum plant genus (Lamiaceae). Aust J Comput Biol Bioinform 2(1):1011

Michael P (1990) Ecological methods for field and laboratory investigation. Tata Mc Graw Hill Publishing Co, pp 404–424

Nuñez MA, Pauchard A (2010) Biological invasions in developing and developed Countries: does one model fit all? Biol Inv 12:707–714.

Nuñez MA, Barlow J, Cadotte M, Lucas K, Newton E, Pettorelli N, Stephens PA (2019) Assessing the uneven global distribution of readership, submissions and publications in applied ecology: obvious problems without obvious solutions. J Appl Ecol 56:4–9.

Omomoh B, Adekunle V, Lawal A, Akinbi O (2019) Tree species diversity and regeneration potential of soil seed bank in Akure forest reserve, Ondo state Nigeria. Taiwania 64(4):409–416.

Omomoh BE, Adekunle VAJ, Aigbe PD, Ademoh FO, Omomoh BM (2020) Evaluation of soil seed bank-vegetation and regeneration potential of Tectona grandis L. f plantation (Taungya farm) in Akure forest reserve Ondo State Nigeria. Trop Plant Res 7(1):37–45

Omomoh BE, Akomolafe FG, Brown SL (2021) A 17 year successional enrichment plantation of tree recruitment and restoration in a tropical rainforest forest. Vegetos.

Omomoh BE (2018) Soil seed bank and regeneration potential of selected land use types in Akure Forest Reserve, Ondo State, Nigeria. Mtech Thesis, Federal University of Technology. 24–25 pp

Onyekwelu JC, Mosandl R, Stimm B (2008) Tree species diversity and soil status of primary and degraded tropical rainforest ecosystems in South-Western Nigeria. J Trop for Sci 20(3):193–204

Oviedo PR, González-Oliva L (2015) National list of invasive and potentially invasive plants in the Republic of Cuba - 2015. (Listanacional de plant as invasora sypotencial mente invasorasen la República de Cuba - 2015). Bissea: Boletínsobre Conservación de Plantas del Jardín Botánico Nacional de Cuba. 9 (2): 1–88.

Pier (2020) Pacific Islands ecosystems at risk. Honolulu, University of Hawaii.

Powo (2000) Plants of the world online. In. Plants of the world online. Royal Botanic garden.

Prashith KTR, Sudharshan SJ (2018) Ethnobotanical uses, phytochemistry and biological activities of Clerodendrum paniculatum L. (Lamiaceae): a comprehensive review. J Drug Delivery Thera 8(5):28–34

Randall (2017) A global compendium of weeds, (Ed. 3) In: RP Randall (eds) Perth, Australia: R. P. Randall. iii + 3653 pp.

The Plant List (2013) Version 1.1. (Accessed 1st Janu)

Williamson M (1999) Inv Ecography 22:5–12

Zedler JB, Kercher S (2004) Causes and consequences of invasive plants in wetlands: opportunities, opportunists, and outcomes. Crit Rev Plant Sci 23(5):431–452



Our appreciation goes to Aleksi Baznekian for the identification of this plant, C. paniculatum and more also to Sören Weber who also contributed to the reading of the manuscript too. Special thanks to FUTA herbarium, Akure and Forest Herbarium Ibadan (FHI) whose facility also contributed to the identification of the plant species. Lastly, our appreciation goes to the two anonymous reviewers who painfully did great work to review this manuscript.

Author Information

Omomoh Bernard Eromosele
FUTA Herbarium, Centre for Research and Development, Federal University of Technology, Akure, Nigeria