Benthic Studies and Environmental Assessment in the Oil Producing Area of the Niger Delta

C.I.C. Anyadiegwu¹ and N. Uwaezuoke^1,

¹Department of Petroleum Engineering, Federal University of Technology, Owerri-Nigeria

Cite this paper:
C.I.C. Anyadiegwu and N. Uwaezuoke. Benthic Studies and Environmental Assessment in the Oil Producing Area of the Niger Delta. American Journal of Environmental Protection. 2015; 3(1):37-43. doi: 10.12691/env-3-1-5

Abstract

The oceans of the world are divided into two areas; the benthic zone or seafloor environment and the pelagic zone or water environment. The continental slope and beyond make up the benthic zone and includes the deepest part of the ocean floor which are made up of sediments consisting of rock particles and organic remain such as calcium carbonate shells of small organisms. From the high-tide mark along the shore to the depths of the ocean are found plants and animals of the sea. Plant and animal life in the benthic zone is most abundant in the coastal waters on the continental shelf. The benthos lives on and depends on the sea bottom and includes benthic fauna like deposit and filter feeders such as barnacles, bryozoans, sponges, mussels, hydroids, pycnogonid sea spiders and stalked crinoids. Plants are found only in the epipelagic zone of the pelagic zone where there is enough light for photosynthesis. Light does not penetrate below the mesopelagic zone. Benthic organisms are good indicators of oil pollution because they live in the sediment for all or most of their lives with limited mobility and differ in their tolerance to amount and types of pollution. Much of the benthic ecosystem/habitat have been either lost or destabilized due to pollution resulting from exploration and production activities in the Niger Delta areas of Nigeria. The pollution could have been in the form of noise, heat and motion in addition to chemicals. It was discovered that the pollutions could have been prevented or properly assessed if the government had implemented all the guidelines concerning marine and land exploration and production activities through its agencies and if standard baseline reports from benthic studies carried out before the spills that could serve as references are available.

Keywords:
petroleum pollution benthic sediment pollution indicator Niger Delta

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References:

[1]	Abowei, J,F.N., Ezekiel, E.N., and Hansen, U.: “Effects of Water Pollution on Benthic Macro Fauna Species Composition in Koluama Area, Niger Delta Area, Nigeria,” International Journal of Fisheries and Aquatic Sciences, 2012.
[2]	Aniefiok E. Ite, Udo J. Ibok, Margaret U. Ite, and Sunday W. Petters, “ Petroleum Exploration and Production: Past and Present Environmental Issues in the Nigeria’s Niger Delta.” American Journal of Environmental Protection I, no. 4 (2013): 78-90.
[3]	Dallas, H.F. and Day, J.A.,”The Effect of Water Quality Variable on Riverine Ecosystems: A Review of Pretoria” Water Research Commissions Report NOTT61/93, 1993.
[4]	Deepwater Sediment Sampling to Assess Post-Spill Benthic Impacts from the Deepwater Horizon Oil Spill; Deepwater Benthic Communities Technical Working Group, 2011.
[5]	Enujiugha, V.N., and Nwanna, L.C.,”Aquatic Oil Pollution Impact Indicators,” J. Appl. Sci. Environ. Mgt., Vol. 8 (2), 2004.
[6]	Flora, E., Olaife, O., Leilei, K. E., “A Study of the Plankton and Benthos of Ekole River in Bayelsa State, Nigeria,” ASSET, Vol. 7, No 1, 2007.
[7]	Harriet, P., Donald, J., Richard, W., Chet, R., Richard, H., Charlotte, B.,”The Status of Bathyal Benthic Communities near the BP Macondo Prospect,” Bathyal Benthic Fauna and Sedimentary Dynamics-Understand Team, 2010.
[8]	Igborgbor, J.C., Oshilonya, L.U., Utebor, E.K. and Igborgbor, G.A., “Benthic Macroinvertebrate Fauna and Physico-chemical Parameters of Utor River Sapele, Delta State,”AJOSSE Vol.5 Issue I, 2004.
[9]	Ite, A.E., and Semple, K.T.,”Biodegradation of Petroleum Hydrocarbons in Contaminated soils,” Microbial Biotechnology: Energy and Environment, R. Arora, ed., pp. 250-278, Wallingford, Oxfordshire: CAB International, 2012.
[10]	Kadafa, A.A., “Environmental Impacts of Oil Exploration and Exploitation in the Niger Delta of Nigeria,” Global Journal of Science Frontier Research Environment and Earth Sciences, Vol. 12, Issue 3, Version 1.0, 2012.
[11]	Marieva, D., Frans, J.J., Daniel, M., Francois, G., and Jacques, M.,”Comparison of Benthic Foraminifera and Macrofaunal Indicators of the impact of oil-based Drill Mud Disposal,”, Marine Pollution Bulletin, Vol. 60, Issue 11, Pages 2007-2021, Elsevier, 2010.
[12]	Ohimain, E., “Environmental Impacts of Dredging in the Niger Delta: options for sediment relocation that will mitigate acidification and enhance natural mangrove restoration,” Terra et Aqua-Number 97, 2004.
[13]	Simboura, N., and Zenetos, A.,”Benthic Indicators to use in Ecological Quality classification of Mediterranean soft bottom marine ecosystems, including a new Biotic Index,” Mediterranean Marine Science, Vol.3/2, 2002.
[14]	Smith, Robert Leo. ”Marine Life.” Microsoft Encarta 2009 [DVD]. Redmond, WA: Microsoft Corporation, 2008.
[15]	SPDC, “Environmental Impact Assessment (EIA) of SPDC-EAST Diebu Creek Exploratory Well Drilling,” SPDC, 2004.
[16]	Ugochukwu, C.N.C., and Ertel, J.,”Negative Impacts of Oil Exploration on Biodiversity Management in the Niger Delta area of Nigeria,” Impact Assessment and Project Appraisal, 26 (2). 139-147, 2008.
[17]	UNEP, Environmental Assessment of Ogoniland, Nairobi, Kenya: United Nations Environment Programme, 2011.
[18]	Woke, G.N., Wokoma Aleleye, I.P. “Effect of Organic Waste Pollution on the Macrobenthic Organisms of Elechi Creek Portharcourt,” African Journal of Applied Zoology and Environmental Biology, 2007.