References
Adewole, A. C., & Uchegbu, L. N. (2010). Environmental implications of heavy metal contamination in soils and aquatic ecosystems. Journal of Environmental Studies, 14(2), 101–108. Gupta, D. K., & Chatterjee, S. (2014). Role of plants in heavy metal remediation. Environmental Monitoring and Assessment, 186(10), 6049–6060. Hickman, J. E., Wu, S., Mickley, L. J., & Lerdau, M. T. (2010). Kudzu invasion and its impact on nitrogen cycling. Proceedings of the National Academy of Sciences, 107(25), 10115–10119. Kato-Noguchi, H. (2023). Allelopathic potential and traditional uses of Pueraria montana. Plants, 12(3), 467–474. Shradha, S., & Sisodia, S. S. (2011). Therapeutic importance of coffee: A review. International Journal of Pharmaceutical Sciences Review and Research, 9(1), 42–47. International Coffee Organization. (2022). Coffee market report. London, UK. Akhtar, S., Ismail, T., & Fraternale, D. (2022). Phytochemicals and health-promoting effects of Coffea arabica. Food Chemistry Advances, 2, 100123. Engen, J. R., Chin, J. W., & Smith, C. L. (2003). Iron metabolism and toxicity. Annual Review of Nutrition, 23, 45–65. Immaculada, R. (2005). Copper in plant physiology: Role and regulation. Plant Science Journal, 9(4), 278–286. Linder, M. C. (2013). Biochemistry of copper in human health. American Journal of Clinical Nutrition, 88(3), 855–861. Sharma, P., & Dubey, R. S. (2005). Lead toxicity in plants. Brazilian Journal of Plant Physiology, 17(1), 35–52. Ekmekci, Y., Tanyolaç, D., & Ayhan, B. (2009). Effects of lead exposure on photosynthetic pigments and antioxidant status in wheat. Acta Physiologiae Plantarum, 31(3), 375–381. Suranjana, G., & Manas, R. C. (2009). Nickel and chromium toxicity: A review of environmental implications. Environmental Chemistry Letters, 7(3), 233–242. Holmes, A. L., Wise, S. S., & Wise, J. P. (2008). Chromium toxicity: Cellular mechanisms and carcinogenic potential. Toxicology and Applied Pharmacology, 233(1), 66–78. Nwankwoala, H. O. (2015). Hydrogeology and groundwater resources of the Niger Delta, Nigeria. Journal of African Earth Sciences, 110, 109–118. Oforka, N. C., Osuji, L. C., & Onwuachu, U. I. (2012). Assessment of soil contamination in the vicinity of Eleme petrochemical complex, Rivers State, Nigeria. Journal of Applied Sciences and Environmental Management, 16(3), 337–343. Abam, T. K. S. (2001). Regional hydrological research perspectives in the Niger Delta. Hydrological Sciences Journal, 46(1), 13–25. NIMET (Nigerian Meteorological Agency). (2020). Climatic data summary for Port Harcourt and environs (2010–2020). Abuja, Nigeria: NIMET. Efe, S. I., & Mogborukor, J. O. (2012). Variability of rainfall and its effect on water resources in the Niger Delta region of Nigeria. Journal of Environmental Science and Water Resources, 1(4), 82–94. Chindah, A. C., Braide, S. A., & Amakiri, J. O. (2004). Heavy metal concentrations in sediments and periwinkle (Tympanotonus fuscatus) in the Bonny/New Calabar River Estuary, Niger Delta, Nigeria. African Journal of Environmental Assessment and Management, 9(1), 1–7. Wokoma, O. A. F. (2013). Vegetation and ecological characteristics of the Niger Delta. Journal of Ecology and Natural Environment, 5(10), 274–284. Akpokodje, E. G. (2001). The engineering-geological characteristics and classification of the major superficial soils of the Niger Delta. Engineering Geology, 63(3–4), 293–309. Ebeku, K. S. A. (2004). Biodiversity conservation in Nigeria: Legal and policy framework. Environmental Law Review, 6(3), 129–142. UNEP (United Nations Environment Programme). (2011). Environmental assessment of Ogoniland. Nairobi, Kenya: UNEP. Orji, F. A., & Nkwocha, E. E. (2020). Environmental pollution and human health risks in the Niger Delta: A review. Journal of Environmental Science and Pollution Research, 27(18), 22825–22838. Nkin, G.K. (2023). Ambient Air Quality and Noise Assessment in Eleme Communities, Rivers State, Nigeria. World Journal of Advanced Research and Reviews, 19(2), 894–904. Jeanelle, M., & Rui, L. (2014). Phytochemicals: Sources, health effects and bioavailability. Journal of Food Science and Nutrition, 5(2), 85–98. Manta, P., Okafor, E., & Idris, A. (2016). Phytochemical screening and biological significance of flavonoids and alkaloids in medicinal plants. International Journal of Pharmacognosy, 3(4), 122–130. Nwachoko, N. C., Wekhe, S. N., & Amadi, J. (2022). Phytochemical composition and antioxidant potential of Anthocleista vogelii. Journal of Applied Sciences and Environmental Management, 26(3), 487–494. Richard, L. F., & Henry, J. A. (2014). Pharmacognosy and the chemistry of alkaloids. Pharmaceutical Biology, 52(6), 715–728. Reddy, A. K., Suresh, P., & Rao, V. R. (2020). Cardiac glycosides and their therapeutic potentials. Journal of Pharmacology and Experimental Therapeutics, 372(1), 12–23. Adewole, M. B., & Uchegbu, L. U. (2010). Heavy metal contamination and environmental impact assessment. Environmental Monitoring and Assessment, 164(1–4), 145–155. Asomugha, G. N., Nwosu, J. I., & Ezebuiro, V. C. (2016). Bioaccumulation of heavy metals in plants and associated health risks. Environmental Pollution and Toxicology, 4(2), 23–30. World Health Organization (WHO). (2019). Nutritional elements and human health: The role of iron in physiological processes. Geneva: WHO Press. Olayemi, J. O., Ojo, T. A., & Bakare, A. A. (2019). Influence of soil pH on micronutrient availability and plant uptake. Journal of Soil Science and Environmental Management, 10(4), 123–131. Ademoroti, C. M. A. (2009). Environmental chemistry and toxicology. Ibadan: Foludex Press. World Health Organization/Food and Agriculture Organization (WHO/FAO). (2009). Joint Expert Committee on Food Additives: Evaluation of certain food contaminants. Geneva: WHO Technical Report Series No. 960. Greany, S., O’Connor, P., & Williams, K. (2005). Assessment of heavy metal contamination in industrial soils. Environmental Monitoring and Assessment, 104(1– 3), 53–67. Rizwan, M., Ali, S., & Abbas, T. (2017). Phytoremediation of heavy metal– contaminated soils: Mechanisms and effectiveness. Ecotoxicology and Environmental Safety, 144, 44–54. Chapman, P. M. (2012). Bioaccumulation: Concepts and implications for environmental risk assessment. Environmental Toxicology and Chemistry, 31(6), 1329–1340. Ali, H., Khan, E., & Sajad, M. A. (2013). Phytoremediation of heavy metals— Concepts and applications. Chemosphere, 91(7), 869–881. Nwachoko, N., Akuru, U.B. and Kpaanadee, R.M. (2022). Phytochemical constituent and antidiarrhoea potential of the stem bark of Anthocleista vogelii aqueous extract in albino rats. Journal of Advanced Biochemistry Research, 6(2), 85-88.