Floristic Inventory of Invasive Alien Aquatic Plants Found in Some Congolese Rivers, Kinshasa, Democratic Republic of the Congo

Main Article Content

Henri Kunzi Mbale
Michael Tshibangu Mukendi
Gédéon Ngiala Bongo
Anthony Batoba Kikufi
Félicien Luyeye Lukoki

Abstract

Aim: To identify invasive aquatic alien plant species found in the Pool Malebo and some rivers in Kinshasa city, their behavior as well as their socio-economic impacts.

Study Design: The study used a combination of purposive sampling and simple random sampling in order to select different sites where samples were collected.

Place and Duration of Study: This study was carried out in different rivers (Pool Malebo system (Kinkole, Kingabwa), and N'sele, Funa and Lukaya rivers) of Kinshasa city in Democratic Republic of the Congo. The Pool Malebo is located along the Congo River. This was conducted between March and October 2013.

Methodology: The collection was performed after a direct observation. The location of collection depended on sites, at Kingabwa and Kinkole, we collected invasive species in the middle of the Congo river and to achieve that, we used canoe. While at N’sele, Lukaya and Funa rivers, samples were collected at the edges. The collection took place in the morning between 7 and 11 am. Recorded species were classified either alien species or invasive alien species according to the status in the study region. The identification of collected species was carried out according to APG III. Seeing the way these species invade the environment and how they disturb the ecology of rivers, the physico-chemical characteristics of waters were measured between 7:00 and 11:00 am with the appropriate electronic probe for each parameter. For each parameter, the comparison between the sites was carried out using the ANOVA test with XLSTAT 2013 software.

Results: Out of 151 specimens collected, 35 species have been identified of which 19 species as alien were identified and 4 proved to be invasive alien species, namely: Eichhornia crassipes, Echinochloa pyramidalis, Ludwigia peploides and Pistia stratiotes. These invasive species are used by farmers as livestock feed and also as green manure for different agricultural and farming activities, As to the physico-chemical characteristics, no significant differences were observed for the temperature and the turbidity in various sites while the pH and conductivity, there was a highly significant difference between different sites. The hydrology of these rivers is seriously disturbed due to the presence of these invasive alien species. These species constitute a serious threat in the erosion of aquatic biodiversity in the removal of native species in the formation of floating monospecific dense mats as observed.

Conclusion: The invasion of alien species is a consequence of human activities and a concern, which affects all sectors of the society. It constitutes a true challenge for ecologists, economists, social scientists, agricultural engineers, environmentalists and other in order to develop and implement strong risk analysis frameworks and environmental impact assessments.

Keywords:
Alien species, invasive, socio-economic impacts, Kinshasa, Democratic Republic of the Congo.

Article Details

How to Cite
Mbale, H. K., Mukendi, M. T., Bongo, G. N., Kikufi, A. B., & Lukoki, F. L. (2020). Floristic Inventory of Invasive Alien Aquatic Plants Found in Some Congolese Rivers, Kinshasa, Democratic Republic of the Congo. Asian Journal of Environment & Ecology, 11(4), 1-15. https://doi.org/10.9734/ajee/2019/v11i430142
Section
Original Research Article

References

Hunter P. The human impact on biological diversity. How species adapt to urban challenges sheds light on evolution and provides clues about conservation. EMBO Reports. 2007;8(4):316-318.

Valladares F, Bastias CC, Goboy O, Granda E, Escudero A. Species coexistence in a changing world. Frontiers in Plant Science. 2015;6:866.
DOI: 10.3389/fpls.2015.00866

Fetzer I, Johst K, Schawe R, Banitz T, Harms H, Chatzinotas A. The extend of functional redundancy changes as species’ roles shift in different environments. Proceedings of the National Academy of Sciences of the United States of America. 2015;112(48):14888-14893.

Dencker TS, Pecuchet L, Beukhof E, Richardson K, Payne MR, Lindegren M. Temporal and spatial differences between taxonomic and trait biodiversity in a large marine ecosystem: Causes and con-sequences. PLoS ONE. 2017;12(12): e0189731. Available:https://doi.org/10.1371/journal.pone.0189731

Armitage D, Béné C, Charles AT, Johnson, Allison EH. The interplay of well-being and resilience in applying a social-ecological perspective. Ecology and Society. 2012;17(4):15.
Available:http://dx.doi.org/10.5751/ES-04940-170415

Gallien L, Carboni M. The community ecology of invasive species: Where are we and what’s next? Ecography. 2016;40(2): 335-352.
Available:https://doi.org/10.1111/ecog.02446

Ahimbisibwe BP. A socio-economic assessment of the impacts of invasive alien plant species on forestry production: The case of Senna spectabilis in Budongo forest reserve Uganda. Unpublished MSc Dissertation, Department of Agricultural Economics, Extension, and Rural development, Faculty of Natural and Agricultural Science, University of Pretoria, Pretoria, South Africa. 2009;145.

Early R, Bradley BA, Dukes JS, Lawler JL, Olden JD, Blumenthal DM, Gonzalez P, Grosholz ED, Ibanez I, Miller LP, Sorte CJB, Tatem AJ. Global threats from invasive alien species in the twenty-first century and national response capacities. Nature Communications. 2016;7:12485.
DOI: 10.1038/ncomms12485

Howard PL. Human adaptation to invasive species: A conceptual framework based on a case study metasynthesis. Ambio. 2019;48:1401-1430.

Convention on Biological Diversity: National Strategy on Invasive Alien Species. Canada. 2004;38.

Convention on Biological Diversity: Lowe S, Browne M, Boudjelas S, Poorter M. 100 Invasive exotic species among the most harmful in the world a selection of the global Invasive species Database. Canada; 2007.

Convention on Biological Diversity: Report of the Conference on Strategic Plan for Biodiversity 2011-2020, Japan. 2010;50.

Convention on Biological Diversity. GTI Capacity Building Workshop for Aichi Targets 9 and 19 in West and Central Africa. Dakar, Senegal Problematic of Invasive Alien Species; 2013.

Strayer DL. Alien species in fresh waters: Ecological effects interactions with other stressors and prospects for the future. Freshwater Biology. 2010;55(1):152- 174.

Baskin Y. A plague of rats and rubbervines: The growing threat of species invasions. Washington D.C: Island Press; 2002.

Center for Invasive Species and Ecosystem Health. Georgia Invasive Species Task Force: Pathways of Introduction. University of Georgia; 2019.
Available:https://www.gainvasives.org/what-is/pathways-of-introduction/
(Assessed on December 23rd, 2019 at 7:08 pm)

Pysˇek P, Jarosˇı ́k V, Pergl J. Alien plants introduced by different pathways differ in invasion success: Unintentional Intro-ductions as a threat to natural areas. PLoS ONE. 2011;6(9):e24890.
DOI: 10.1371/journal.pone.0024890

Reaser JK, Meyerson LA, Cronk Q, De Poorter M, Eldrege LG, Green E, Kairo M, Latasi P, Mack RN, Mauremootoo J, O’dowd D, Orapa W, Sastroutomo S, Saunders A, Shine C, Thrainsson S, Vaiutu L. Ecological and socio-economic impacts of invasive alien species in island ecosystems. Environmental Conservation. 2007;34(2):98-111.

Marbuah G, Gren IM, McKie B. Economics of harmful invasive species: A review. Diversity. 2014;6:500-523.

Butchart S, Miloslavich P, Reyers B, Subramanian S. IPBES global assessment on biodiversity and ecosystem services. Chapter 3. Assessing progress towards meeting major international objectives related to nature and nature’s contributions to people. Unedited draft. Inter-governmental Science-Policy Platform on Biodiversity and Ecosystem Services; 2019.

Andrabi SM, Reshi ZA, Shah MA, Qureshi S. Studying the patterns of alien and native floras of some habitats in Srinagar City, Kashmir, India. Ecological Processes. 2015;4(2):1-12.

Carrenard OC, Bongo GN, Bulubulu F, Gafuene GN, Ngbolua KN, Lumande JK. Bioaccumulation of heavy metals in Eichhornia crassipes used as a potential substrate for edible mushroom cultivation. International Journal of Life Science and Engineering. 2018;3(2):87-95.

Lateef ASA, Fernandez-Alonso M, Tack L, Delvaux D. Geological constraints on urban sustainability, Kinshasa City, Democratic Republic of Congo. Environmental Sciences. 2010;17(1):17-35.

APG III. The Angiosperm Phylogeny Group. An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III. Botanical Journal of the Linnean Society. 2009;161(2):105-121.

Kikufi BA. Study of the flora vegetation of the Funa River basin in Kinshasa. Unpublished BSc Dissertation, Department of Biology, Faculty of Sciences, University of Kinshasa; 2000.

Mack RN, Simberloff D, Lonsdale WM, Evans H, Clout M, Bazzaz FA. Biotic invasions: Causes, epidemiology, global consequences and control. Ecological Applications. 2000;10:689–710.

Pimentel D, Zuniga R, Morrison D. Update on the environmental and economic costs associated with alien-invasive species in the United States. Ecological Economics. 2005;52:273–288.

Masters RA, Sheley RL. Principles and practices for managing rangeland invasive plants. Journal of Range Management. 2001;54(5):502-517.

Tobias VD, Conrad JL, Mahardja B, Khauma S. Impacts of water hyacinth treatment on water quality in a tidal estuarine environment. Biological Invasions. 2019;21:3479-3490.

Chamier J, Schachtschneider K, Le Maitre DC, Asthon PJ, Wan Wilgen BW. Impacts of invasive alien plants on water quality, with particular emphasis on South Africa. Water Research Commission. 2012;38(2): 345-356.