Species Composition of a Degraded Watershed in Amawbia, Anambra State, Nigeria
American Journal of Plant Biology
Volume 3, Issue 1, March 2018, Pages: 1-7
Received: Sep. 20, 2017;
Accepted: Oct. 11, 2017;
Published: Jan. 30, 2018
Views 1910 Downloads 140
Ukpaka Chukwujekwu Gratius, Biological Science Department, Faculty of Natural Sciences, Chukwuemeka Odumegwu Ojukwu University, Uli, Nigeria
Nnabude Peter Chinedu, Department of Soil Science, Faculty of Biological Sciences, Nnamdi Azikiwe University, Awka, Nigeria
Follow on us
This work was carried out in a period that spans the rainy and dry seasons of 2010 – 2011. In times past, Anambra State was rich in chains of productive watershed, saturated with luxuriant plant species. This however is now history owing to steadily increasing, degradatory anthropogenic influences. Ignorance and crass indifference on the indispensability of plant resources to man’s survival in tropical Africa has also resulted in very poor biodiversity of our watersheds. Amawbia watershed is not an exception. With the assistance of a field taxonomist and relevant texts, tree, climber, shrub, grass and forb species were firstly identified and recorded for sampled sites (sites A – E). Unlike productive watersheds, the dominant species encountered in this watershed were grasses and forbs. Dominant individual plants include: Heivea brasiliensis, Senna siamea, Napoleana imperialis, Dactyledenia barteri, Pentaclethra macrophyla, (Trees); Gongronema latifolium, Dioscorea dumentorum, Telfeiria occidentalis, Smilax anceps, Cissus aralioides (Climbers); Olax viridis, Mimosa invisa, Bambusa vulgaris, Vernonia amygdalina, Sarcocephalum laxiflora (Shrubs); Zea mays, Panicum maxima, Imperata cylindrica, Sporobolus pyramidalis, Andropogon tectorum (Grass); Amaranthus viridis, Ageratum conyzoides, Sida acuta, Gomphrena celosoides, Ocimum basilicum (Forbs). Most of these species are not very important in terms of economic relevance.
Specie Composition, Degraded, Watershed, Biodiversity, Anthropogenic Influences
To cite this article
Ukpaka Chukwujekwu Gratius,
Nnabude Peter Chinedu,
Species Composition of a Degraded Watershed in Amawbia, Anambra State, Nigeria, American Journal of Plant Biology.
Vol. 3, No. 1,
2018, pp. 1-7.
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/
) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Akobundu, I. O. and Agyakwa, C. W. (1998). A handbook of West African Weeds (2nd ed). Nigeria: International Institute of Tropical Agriculture, 564pp.
Conservation Technology Information Center (2009). What is a watershed? West Lafayette, Indiana, USA. 1p.
Gill, L. S. (1988). Taxonomy of flowering plants. Nigeria: Africana-Fep publishers, pp. 123-288.
Idodo-Umeh (2011). College Biology. Idodo Umeh publishers limited. Nigeria. 657pp.
Ingwu, A. (2006). Development in Nigeria. Who should govern our watershed: A case study from northern Cross River State, Nigeria. Retrieved February 4th, 2006. http://www.cenrce.org/eng/projects/ace/agnes/presentation.pdf
Ministry of Agriculture, Awka (2009). Mean Monthly climatological data (handbill). Anambra State. Nigeria. 2pp.
Mywatershedwatch.org (2016). Why are watersheds Important. USA. 866pp.
New World Encyclopedia (2009). Watershed/Drainage basins. http://www.newworldencyclopedia.org/entry/watershed. U.S.A. Accessed, March 2011. 2pp.
Nyananyo, B. L. (2006) Plants from the Niger Delta. Nigeria: Onyoma Research Publications, 403pp.
The Nature Conservancy (2016). Watersheds USA. 101pp.
United States Geological Survey (2000). Important Watershed Characteristics. http://www.egr.msu.edu/-northco2/BE481/Wshed char.htm.