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Journal articles on the topic 'Niger River Delta'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Uzoegbu, M. U. "Evidence of terrestrial organic carbon inputs on Niger Delta Sea Shelf." Scientia Africana 19, no. 3 (February 24, 2021): 83–100. http://dx.doi.org/10.4314/sa.v19i3.7.

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The objective of this research is to determine the actual source of organic matter in the Niger Delta Sea Shelf (NDSS). Organic carbon (OC) and n-alkanes were investigated in the suspended matter (SM) and surfcial sediments of the Niger and Imo Rivers and the opposite Niger Delta Sea Shelf. Organic nitrogen and carbon isotope (δ13C) values were determined as additional parameters in the sediments. OC and n-alkane concentrations were highly variable. This variability was interpreted as the result of sources of materials from the inland basins and a complex sedimentation pattern involving the discharges of these two rivers. Using the constant ratio of high molecular weight odd n-alkanes to OC in both rivers, the estimated value of more than 70% of the OC preserved in shelf sediments were terrestrially-derived. This result was substantiated by the overall dominance of land-derived n-alkanes. A second approach using δ13C values and assuming binary dilution of riverine and marine OC led to the determined source of organic matter. Keywords: Organic carbon; δ13C; n-Alkanes; Niger River; Imo River; Niger Delta Sea Shelf.

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2

Orisakwe, O. E., R. Asomugha Not Available, E. Obi, O. J. Afonne, C. E. Dioka, D. Akumka, and N. A. Ilondu. "Ecotoxicological Study of the Niger-Delta Area of the River Niger." Bulletin of Environmental Contamination and Toxicology 66, no. 4 (April 1, 2001): 548–52. http://dx.doi.org/10.1007/s00128-001-0042-x.

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3

Njoku, Chukwudi Gbadebo, Joel Efiong, and Nse-Abasi Ndiyo Ayara. "A Geospatial Expose of Flood-Risk and Vulnerable Areas in Nigeria." International Journal of Applied Geospatial Research 11, no. 3 (July 2020): 87–110. http://dx.doi.org/10.4018/ijagr.20200701.oa1.

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Flooding is recurrent in Nigeria, occurring yearly at different scales. This geared the need for a study to reveal local government areas (LGAs) that are at risk and vulnerable to flooding. The multi-criteria approach was adopted, using geospatial techniques and data. Factors considered were elevation, slope, rainfall intensity, and distance to river. The factors were classified, reclassified, rated, and weighed in a systematic process. Nineteen states and 114 LGAs face high risks, especially communities in the Niger Delta, around the lagoons of Lagos, along River Niger, Benue, and the Cross-River. Also, 125 LGAs in 18 states face medium flood-risk vulnerability. Consideration the population density of communities, Lagos State is the most vulnerable because of LGAs with high population densities within high flood-risk zones. Other states with communities exposed to high flood-risk vulnerability include Rivers, Kogi, Cross River, Akwa Ibom, Anambra, and Delta. The study provides information key to proactive policy formulation, mitigation, and adaptation to flood risk in Nigeria.

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4

Akana, Tombra, and Olubunmi Adeigbe. "Channel characteristics and planform dynamics of the lower Niger River, Niger Delta Basin (1985–2015)." Geology, Geophysics and Environment 45, no. 4 (January 25, 2020): 291. http://dx.doi.org/10.7494/geol.2019.45.4.291.

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This study used repeat satellite imagery and Geographic Information System analysis to assess the plan-form dynamics along the length of the lower Niger River Valley from Onitsha city to the coast between 1985 and 2015. The aim is to understand the altered dynamics and its plausible causes in this data-poor region. Analyses revealed that the Niger River has undergone change corresponding to enhanced instability in terms of an increased rate of erosion. In the study area, a change was observed from 3.7% of deposition in the first 10 years (1985–1995) to 3.9% of erosion in the next 10 years (1995–2005) and 4.7% of erosion in the last 10 years (2005–2015). Total erosion over the 30-year period (1985–2015) in the delta was calculated on 4.8%. The river channel has migrated toward the east in the upper and lower reaches while the mid-section of the channel is migrating towards the west. The east river bank is observed to be more unstable compared to west bank line through the study period. The maximum shifts identified were 3.35 km of deposition in 10 years (1985–1995), 3.31 km of erosion in the next 10 years (1995–2005), and another substantial erosional shift of 3.35 km in the next 10 years (2005–2015). Avulsion rates gradually moved from −42.1 m ∙ year−1 (1985–2005, segment F) to 100.2 m ∙ year−1 (1985–1995, segment D), large deposition in the first 10 years. Total avulsion rates of the delta in the last 30 years (1985–2015) has pointed on erosion (−2.2 m ∙ year−1). The altered dynamics observed would likely threaten the future of the frag-ile lower river system environment and raise concerns for operators with infrastructure within the Niger Delta.

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5

Abam, T. K. S., and W. O. Omuso. "On river cross-sectional change in the Niger Delta." Geomorphology 34, no. 1-2 (August 2000): 111–26. http://dx.doi.org/10.1016/s0169-555x(99)00129-4.

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6

Seiyaboh, EI, TCN Angaye, and WE Alagha. "Sedimentary Assessment of Basic River in the Niger Delta: A Case Study of Orashi River in the Eastern Niger Delta of Nigeria." Greener Journal of Geology and Earth Sciences 4, no. 3 (December 20, 2016): 051–55. http://dx.doi.org/10.15580/gjges.2014.1.1205131014.

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7

Seiyaboh, EI, TCN Angaye, and WE Alagha. "Sedimentary Assessment of Basic River in the Niger Delta: A Case Study of Orashi River in the Eastern Niger Delta of Nigeria." Greener Journal of Geology and Earth Sciences 4, no. 3 (December 20, 2016): 051–55. http://dx.doi.org/10.15580/gjges.2016.3.122116218.

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8

Peters, Edem Etim. "Reflections on Pottery Art in the Oil Rich Niger Delta Region of Nigeria: A Study of Pottery Art in Akwa Ibom and Rivers States." European Journal of Engineering Research and Science 4, no. 3 (March 24, 2019): 145–51. http://dx.doi.org/10.24018/ejers.2019.4.3.1093.

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Niger Delta region is very rich in oil and gas deposits, clay, agricultural land, fisheries, extensive forest and other resources. They are nine states which make the region namely, Abia, Akwa Ibom, Bayelsa, Cross River, Delta, Edo, Imo, Ondo and Rivers. The most oil producing communities among them are Akwa Ibom, Bayelsa, Edo, Delta and Rivers State. Clay is equally found in abundance in all the states like crude oil is found in Niger Delta communities. The available clay mineral in the region has the capacity to transform the nation’s economy if properly utilized. Clay is the basic material for pottery or ceramics production. It is also used to ease the penetration of pipes in drilling of crude oil. This paper looks at the practice of pottery in Niger Delta Area with a focus on pottery practice in both Akwa Ibom and Rivers States. Indigenous and contemporary pottery or ceramics practices in these communities indeed have played vital role in the economic, social religious and cultural ways of life of the people. Clay products such as dinnerware and sanitary wares and others are highly sought for and they have the capacity to boast the national economy as experienced in other nations such as Japan, Italy, Britain, United States of America, India and China among others. Data were collected from both primary and secondary sources and were subsequently assessed. The result shows that proper utilization of clay found in Niger Delta has the potential to create numerous job opportunities for the teaming population of youths in the region. The availability of abundant clay in the region, if well harnessed could adequately compete with crude oil exploitation for economic purposes in the region.

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9

Ilechukwu, Ifenna, Nkoli M. Mgbemena, Patience O. Inagbor, and Gloria I. Ndukwe. "Assessment of the levels of polychlorinated biphenyls in sediments of new Calabar River, Niger Delta Region, Nigeria." Ovidius University Annals of Chemistry 29, no. 1 (June 28, 2018): 36–40. http://dx.doi.org/10.2478/auoc-2018-0005.

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Abstract The concentrations of polychlorinated biphenyls (PCBs) in sediment samples from the New Calabar River in the Niger Delta Region of Nigeria were determined. Grab sediment samples were collected from five stations in the river and analyzed for individual PCB congeners using gas chromatography - mass spectrometer. The Σ8PCB (sum of eight congeners) identified in the samples ranged from 0.21 to 2.16 mg/kg. Congener 105 and 194 were the most and least abundant with 34.65 % and 2.46 % respectively. The lower chlorinated congeners (below PCB 101) were prominent with 54.68 % of the total PCBs concentration in the sediments. The results of this study should make PCBs contaminants of grave concern in the Niger Delta Region.

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10

Enemugwem, John H., and Darlington K. Okere. "The Role of N.C. Ejituwu in the Development of Niger Delta Historiography." History in Africa 35 (January 2008): 191–207. http://dx.doi.org/10.1353/hia.0.0016.

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The history of history-writing in the Niger Delta was first developed by E.J. Alagoa. However, his work, which covers the periods from 1508 to 1988, does not go into the twenty-first century. This is the case as well for N.C. Ejituwu, who extended the Delta historiography to 1999 but without including his own innovations. For this reason, this paper discusses the innovations brought by Ejituwu's role in the development of Niger Delta historiography. These are his contributions to the training of historians, the introduction of feminist history, biographical writing, and history concourse. Others include his reconstruction of the settlement histories of many Eastern and Central Niger Delta groups. Its impact on the development of the Delta historiography, analyzed here, furthered historical research in the region. Although largely a study of the work of N.C.Ejituwu, this paper is also intended as an overview of Niger Delta regional history of history writing.According to Ake, development concerns human creativity, socially or economically. N.C. Ejituwu has demonstrated his creativity in historical writing on aspects of the Niger Delta, a region of some 75,000 square kilometers stretching from the Mahin estuary in the west to the Cross River estuary in the east. This most southerly region of Nigeria has about fifty linguistic groups located on its islands and peninsulas. Historical writing in the Delta concerns these fifty clans of the Ijo ethnic nationality. Their settlement histories have been documented by Alagoa, Cookey, and Ejituwu.

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11

Gundlach, Erich R., Victor Ohioze Imevbore, Boykin Witherspoon, and Jimoh Ainodion. "Incorporating Biodiversity into Sensitivity Maps of the Niger River Delta." International Oil Spill Conference Proceedings 2001, no. 1 (March 1, 2001): 391–97. http://dx.doi.org/10.7901/2169-3358-2001-1-391.

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ABSTRACT Using the basis that communities having high biodiversity are inherently more valuable as an ecological resource, the authors have derived a preliminary system of classifying the tropical environments of the oil-producing delta regions of Nigeria based on a number of field-collected parameters that measure the degree of biodiversity as well as potential spill persistence and difficulty of cleanup. Physical parameters to be measured include type of substrate, presence of near-surface groundwater and inhibiting layer, and extent of surface debris. Biological parameters include tree density (stocking), coverage by grasses and shrubs in the under-story, plant condition, species richness and diversity (mammals, reptiles, amphibians, birds), important medicinal or endangered species, and special or unique biological features. Each factor is given assigned weighting values based on over 20 years of oil spill experience. The weighting given to spill persistence factors is 25%, while 75% is given to biological parameters. The sum of species richness and diversity is one-third of the entire valuation. Once all parameters are measured and tallied, sensitivity classification will be divided into five to ten categories. Initial data collection was undertaken during 1999. Additional fieldwork to collect and test each factor is planned for the year 2000. Sensitivity maps, including the classification of both coastal and inland habitats, will then be prepared in a GIS (Geographic Information System) format.

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12

Kravtsova, V. I., V. N. Mikhailov, and A. S. Kozyukhina. "Hydrological-morphological and landscape features of the Niger River delta." Water Resources 35, no. 2 (March 2008): 121–36. http://dx.doi.org/10.1134/s0097807808020012.

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13

Musa, Z. N., I. Popescu, and A. Mynett. "Niger's Delta vulnerability to river floods due to sea level rise." Natural Hazards and Earth System Sciences Discussions 2, no. 8 (August 15, 2014): 5213–45. http://dx.doi.org/10.5194/nhessd-2-5213-2014.

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Abstract. An evaluation of vulnerability to sea level rise is undertaken for the Niger delta based on 17 physical, social and human influence indicators of exposure, susceptibility and resilience. The assessment used GIS techniques to evaluate and analyse the indicators and the index of coastal vulnerability to floods, if sea level rise conditions are occurring. Each indicator value is based on data extracted from various sources including remote sensing, measured historical data series and literature search. Further indicators are ranked on a scale from 1 to 5 representing "very low" to "very high" vulnerability, based on their values. These ranks are used to determine a similar rank for the defined coastal vulnerability index (CVSLRI). Results indicate that 42.2% of the Niger delta is highly vulnerable to sea level rise; such areas been characterized by low slopes, low topography, high mean wave heights, and unconfined aquifers. Moreover the analysis of social and human influences on the environment indicate high vulnerability to sea level rise due to its ranking for type of aquifer, aquifer hydraulic conductivity, population growth, sediment supply and groundwater consumption. Such results may help decision makers during planning, to take proper adaptive measures for reducing Niger Delta's vulnerability, as well as increasing the resilience to potential future floods.

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14

Kingdom, Tonbarapagha, and Aduabobo Ibitoruh Hart. "Population dynamics of Niger River prawn (Macrobrachium felicinum) in Lower Taylor Creek, Niger Delta, Nigeria." Zoology and Ecology 22, no. 3-4 (December 2012): 160–65. http://dx.doi.org/10.1080/21658005.2012.704187.

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15

Ezemonye, Lawrence, Thomas Ikpesu, and Isioma Tongo. "Distribution of Lindane in Water, Sediment, and Fish from the Warri River of the Niger Delta, Nigeria." Archives of Industrial Hygiene and Toxicology 59, no. 4 (December 1, 2008): 261–70. http://dx.doi.org/10.2478/10004-1254-59-2008-1906.

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Distribution of Lindane in Water, Sediment, and Fish from the Warri River of the Niger Delta, NigeriaThis paper is the first attempt to quantify the levels and the distribution pattern of lindane in the surface water, sediment and fish (Chrysichthys furcatus and Tilapia zilli). The samples were collected from three stations (Ovwian, Ekakpamre, and Ovu) of the Warri River in the western Niger Delta of Nigeria in 2006: during the dry (January-April) and wet seasons (May-August). The analysis included a total of 96 samples made up of 24 samples each for water, sediment, and fish. The pesticide levels were analysed using high performance liquid chromatography to elucidate its distribution in various environmental compartments. Residue levels in the matrices ranged from below the detection limit (BDL) to 1.37μg L-1 in water, BDL to 12.66 μg g-1 dry weight (dw) in sediment, BDL to 16.67 μg g-1dw in Chrysichthys furcatus, and BDL to 0.15 μg g-1dw in Tilapia zilli. The observed values were above the ecological benchmarks (0.01 μg L-1) recommended by the Nigerian Environmental Protection Agency and European Union. They were also relatively higher than in previous studies on the Nigerian environment, which calls for regular monitoring of the Niger Delta water bodies.

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16

Toyin Olabisi, Odutola, and Amobi Chukwuka. "Experimental Investigation of Pipeline Corrosion in a Polluted Niger Delta River." International Journal of Oil, Gas and Coal Engineering 8, no. 1 (2020): 17. http://dx.doi.org/10.11648/j.ogce.20200801.13.

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17

CHINDAH, ALEX CHUKS, and ANWAINI OSUAMKPE. "The fish assemblage of the lower Bonny river, Niger Delta, Nigeria." African Journal of Ecology 32, no. 1 (March 1994): 58–65. http://dx.doi.org/10.1111/j.1365-2028.1994.tb00555.x.

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18

Okpara, D. A., and M. B. Offiong. "Morphodynamics of river and coastal transport of sediments in mega delta basin, Niger Delta Nigeria." IOP Conference Series: Earth and Environmental Science 424 (January 27, 2020): 012010. http://dx.doi.org/10.1088/1755-1315/424/1/012010.

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19

Musa, Z. N., I. Popescu, and A. Mynett. "The Niger Delta's vulnerability to river floods due to sea level rise." Natural Hazards and Earth System Sciences 14, no. 12 (December 19, 2014): 3317–29. http://dx.doi.org/10.5194/nhess-14-3317-2014.

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Abstract. An evaluation of vulnerability to sea level rise is undertaken for the Niger Delta based on 17 physical, social and human influence indicators of exposure, susceptibility and resilience. The assessment used geographic information systems (GIS) techniques to evaluate and analyse the indicators and the index of coastal vulnerability to floods, if sea level rise conditions are occurring. Each indicator value is based on data extracted from various sources, including remote sensing, measured historical data series and a literature search. Further on, indicators are ranked on a scale from 1 to 5 representing "very low" to "very high" vulnerability, based on their values. These ranks are used to determine a similar rank for the defined coastal vulnerability index (CVSLRI). Results indicate that 42.6% of the Niger Delta is highly vulnerable to sea level rise, such areas being characterised by low slopes, low topography, high mean wave heights, and unconfined aquifers. Moreover, the analysis of social and human influences on the environment indicate high vulnerability to sea level rise due to its ranking for type of aquifer, aquifer hydraulic conductivity, population growth, sediment supply and groundwater consumption. Such results may help decision makers during planning to take proper adaptive measures for reducing the Niger Delta's vulnerability, as well as increasing the resilience to potential future floods.

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20

Dada, Olusegun A., Guangxue Li, Lulu Qiao, Yinusa Ayodele Asiwaju-Bello, and Adeleye Yekini Biodun Anifowose. "Recent Niger Delta shoreline response to Niger River hydrology: Conflict between forces of Nature and Humans." Journal of African Earth Sciences 139 (March 2018): 222–31. http://dx.doi.org/10.1016/j.jafrearsci.2017.12.023.

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21

Dienye, HE, OA Olopade, and SA Toby. "Species composition and diversity of cast net fisheries in New Calabar River, Niger Delta, Nigeria." Journal of Biodiversity Conservation and Bioresource Management 4, no. 1 (August 18, 2018): 19–26. http://dx.doi.org/10.3329/jbcbm.v4i1.37873.

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A study on the catch composition and diversity of cast net fisheries was conducted between May and August, 2017 in the New Calabar River, Rivers state, using cast net of varying mesh sizes (1.5mm and 2.5mm). Fish samples were collected from three sampling stations, viz. Station1- Aluu, Station 2- Choba and Station 3- Iwofe. The fish species recorded comprised of 26 species under 11 families, and one decapod crustacean. The three most abundant species were; Coptodon guineensis (25.11%), Coptodon zilli (18.56%) both from the Cichlidae family, and Penaeus nitialis (10.90%) from the Penaeidae family, while the least abundant species was Liza grandisquamis (0.13%) from the Mugilidae family. The diversity indices showed that station 2 recorded the highest number of species (21) while station 1 recorded the lowest with (12) species. Simpson’s indexes of diversity, Simpson’s reciprocal index, Shannon- weiner index, and Pielou’s evenness index, were estimated. This study serves as a base line data which will assist relevant bodies in the management and conservation of fisheries resources in the New Calabar River. It is therefore recommended that for an improved and sustainable exploitation and management of fisheries resources of the New Calabar River, proper monitoring and management for fish stock must be done.J. Biodivers. Conserv. Bioresour. Manag. 2018, 4(1): 19-26

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22

Aweto, K. E. "A Preliminary Study of Groundwater Conditions in a Transitional Environment of Niger Delta using Direct – Current Soundings." Journal of Scientific Research 12, no. 3 (May 1, 2020): 279–88. http://dx.doi.org/10.3329/jsr.v12i3.44136.

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The study area Burutu lies within the transitional environment of the Niger delta. The area is sectioned by a compact network of rivers and creeks, which maintain a fragile but dynamic balance between saline, estuarine and freshwater surface bodies. Twenty direct current resistivity soundings were carried out to provide adequate information on the spatial lithological variation and groundwater conditions in Burutu. Resistivity contrasts and water analysis were used as a means of characterizing probable lithology and water type present within the pore spaces of aquiferous units. The results revealed spatial development of the aquifer architectural facies that follows a trend of mostly sand with little clay in the south to sand with abundant of clayey facies in the north near the Forcados River. The groundwater conditions indicated that salty/brackish water constituting about 4 % of water present was confined to the bank of the Forcados River and extend laterally landwards to about 120 m. Further away from the river bank, the water was mostly poor to good quality freshwater. The depth to the freshwater constituting about 96 % groundwater present varied from about 49.0 – 63.3 m near the Forcados River and became as shallow as 1.6 m in inland areas.

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23

Ologhadien, Itolima. "Developments in river bank protection schemes in the lower Niger delta basin." MOJ Civil Engineering 5, no. 2 (2019): 58–67. http://dx.doi.org/10.15406/mojce.2019.05.00150.

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24

Wang, Ping, Aroloye O. Numbere, and Gerardo R. Camilo. "Long-Term Changes in Mangrove Landscape of the Niger River Delta, Nigeria." American Journal of Environmental Sciences 12, no. 3 (March 1, 2016): 248–59. http://dx.doi.org/10.3844/ajessp.2016.248.259.

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25

Akinbobola, Olusola I., and Bernard E. Njor. "Environmental Worry of River State Residents in the Niger Delta Region, Nigeria." Psychology 05, no. 01 (2014): 32–37. http://dx.doi.org/10.4236/psych.2014.51007.

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26

Nwoko, Desmond, Ify Nwaogazie, and Charles Dike. "Modelling Velocity Distribution in 3-D for Nun River, Niger Delta Nigeria." British Journal of Applied Science & Technology 20, no. 6 (January 10, 2017): 1–12. http://dx.doi.org/10.9734/bjast/2017/33352.

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27

Iwegbue, Chukwujindu M. A., Eferhire Aganbi, Grace Obi, Stephen A. Osakwe, Peter M. Eguvbe, Jude E. Ogala, and Bice S. Martincigh. "Aliphatic hydrocarbon profiles in sediments of the Forcados River, Niger Delta, Nigeria." Environmental Forensics 17, no. 2 (April 2, 2016): 144–55. http://dx.doi.org/10.1080/15275922.2016.1163620.

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28

Ihunwo, Owhonda. "Effect of Urban Effluent on River Water Quality in the Niger Delta." Frontiers in Environmental Microbiology 4, no. 4 (2018): 110. http://dx.doi.org/10.11648/j.fem.20180404.13.

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29

Abam, T. K. S. "Factors affecting distribution of instability of river banks in the Niger delta." Engineering Geology 35, no. 1-2 (October 1993): 123–33. http://dx.doi.org/10.1016/0013-7952(93)90074-m.

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30

Abam, T. K. S. "Aspects of alluvial river bank recession: some examples from the Niger delta." Environmental Geology 31, no. 3-4 (June 16, 1997): 211–20. http://dx.doi.org/10.1007/s002540050182.

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31

Kpone-Tonwe, Sonpie. "Property reckoning and methods of accumulating wealth among the Ogoni of the eastern Niger delta." Africa 67, no. 1 (January 1997): 130–58. http://dx.doi.org/10.2307/1161273.

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This article is a product of research in the Ogoni region of the Niger delta between 1981 and 1991. It analyses an aspect of the pre-colonial economy of Ogoni, which aimed at preserving the proceeds of agricultural production and increasing the wealth of the individual. Agricultural production was not all for subsistence. A substantial proportion was sold off and the proceeds invested in the economy. The article argues that this was possible because the Ogoni were acquainted with the use of an all-purpose currency before the arrival of Europeans. By a method of linguistic analysis it was possible to trace the existence of such an indigenous currency and its spread from the Ogoni area to the rest of the eastern Niger delta and to the greater part of south-east Nigeria. It is shown that the Ogoni were major producers and distributors of large transport and fishing canoes in the eastern Niger delta. A thriving canoe-making industry at Ko on the Imo river, led to a culture of marine transport and distributive long-distance trade through the waterways of the delta and to the island of Equatorial Guinea and to the Cameroons. The conclusion summarises the evidence and drives home the fact that in pre-colonial Ogoni wealth was accumulated and reckoned not by the yardstick of more cash but by the possession of livestock and landed property.

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32

Onisogen Simeon, Edori. "Distribution of Polycyclic Aromatic Hydrocarbons in Surface Water of Elelenwo River, Rivers State, Niger Delta Nigeria." International Journal of Environmental Monitoring and Analysis 8, no. 2 (2020): 23. http://dx.doi.org/10.11648/j.ijema.20200802.11.

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33

C. O., Ujowundu, Ajoku C.O, Nwaogu L. A, Belonwu D. C., and Igwe K.O. "Toxicological Impacts of Gas flaring and Other Petroleum Production Activities in Niger-Delta Environment." JOURNAL OF ADVANCES IN CHEMISTRY 10, no. 2 (June 28, 2014): 2297–304. http://dx.doi.org/10.24297/jac.v10i2.5496.

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In this study, the concentrations of inducers of environmental toxicity such as heavy metals and polycyclic aromatic hydrocarbon and biomarkers of environmental toxicants such as oxidative stress enzymes/compounds and liver function enzymes were determined. These parameters were used to assess the pollution status of some Niger-Delta areas; Ebocha/Omoku, Abacheke/Egbema, and Okwuzi/Ohaji, with the aid of two indicator species: cat fish (Ictalurus punctatus) and snakehead fish (Channa argus) from three different water sources; Ebocha/Omoku river, Abacheke river and Okwuzi creek all of which are within the area of oil exploration and production activities in Nigeria. The control fish and water samples were collected from Otamiri River within the Federal University of Technology, Owerri, Nigeria, with no known oil exploration and production activity. The results obtained indicated significant (p < 0.05) differences between the exploited and the unexploited environment and the need to incorporate biochemical markers in environmental impact assessment of aquatic environments to complements the classical chemical monitoring.

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34

Amangabara, Gordon Tami, and Obinna Michael Onyewuchi. "Morphological Changes along the shoreline of the arcuate Niger Delta from Parts of Delta State to Akwa Ibom State between 1986 and 2016." Ghana Journal of Geography 13, no. 1 (May 19, 2021): 221–34. http://dx.doi.org/10.4314/gjg.v13i1.11.

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This study analyzes the morphological changes occurring at the arcuate Niger Delta shoreline by identifying factors that contribute to erosion-induced shoreline changes and the rate of shoreline change from Forcados (Delta State) to Ibeno (Akwa Ibom State). Shoreline changes were compared from 1986 to 2016 as well as among western, central and eastern sections of the arcuate Niger Delta using Landsat satellite imagery within Geographic Information System (GIS) environment. In the assessment of the entire shoreline, accretion was 5,477.814Ha (1.2%) in 1986 and 19181.53Ha (4.1%) in 2016. For erosion, it was 48,400.03 (10.3%) in 1986 and 68398.84Ha (14.5%) in 2016. This indicates that accretion increased by 2.91% and erosion also increased by 4.25% in 30 years. The major accretion was detected within Brass (Bayelsa State), Bonny (River State), Andoni (River State) and Ibeno (Akwa Ibom State). Forcados South Point (Delta State), Sombreiro River mouths and eastern Obolo recorded the highest level of shoreline erosion. For land use/land cover (LULC), vegetation was 27.4% in 1986 but reduced to 22.9% in 2016; a change I attributed to massive conversion of vegetative cover for anthropogenic activities in the area. The study concluded that major erosion cases are due to the changing climate and the velocity of flow of major estuaries into the ocean. The activities that contribute to the shoreline change aside the challenging natural factors are sand mining, hard and engineered structures on the shore and other commercial and social activities. The occurrences of shoreline erosion have contributed to the degradation of these coastal ecosystems, loss of human settlements and livelihood. It is therefore essential to implement precautionary measures to mitigate the risk of shoreline erosion within this sensitive zone

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35

Idodo-Umeh, G. "The feeding ecology of schilbeid catfishes in river Ase, Niger delta, Southern Nigeria." Tropical Freshwater Biology 24, no. 1 (January 16, 2017): 45. http://dx.doi.org/10.4314/tfb.v24i1.5.

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Iwegbue, Chukwuji M. A., M. O. Eghwrudje, G. E. Nwajei, and S. H. O. Egboh. "Chemical speciation of heavy metals in the Ase River sediment, Niger Delta, Nigeria." Chemical Speciation and Bioavailability 19, no. 3 (September 24, 2007): 117–27. http://dx.doi.org/10.3184/095422907x237848.

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Kuper, M., C. Mullon, Y. Poncet, and E. Benga. "Integrated modelling of the ecosystem of the Niger river inland delta in Mali." Ecological Modelling 164, no. 1 (June 2003): 83–102. http://dx.doi.org/10.1016/s0304-3800(03)00006-1.

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38

Nwadiaro, C. S., and E. O. Ezefili. "A preliminary checklist of the phytoplankton of New Calabar River, Lower Niger Delta." Hydrobiological Bulletin 19, no. 2 (December 1985): 133–38. http://dx.doi.org/10.1007/bf02270759.

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39

Gomarasca, M. A., D. F. Lozano‐García, R. N. Fernandez, P. W. Wyss, and C. J. Johannsen. "Analysis of seasonal variation in the Niger River interior delta using satellite data∗." Geocarto International 7, no. 3 (September 1992): 61–73. http://dx.doi.org/10.1080/10106049209354381.

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ABAM, T. K. S., and C. O. OKAGBUE. "Construction and Performance of River Bank Erosion Protection Structure in the Niger Delta." Environmental & Engineering Geoscience xxiii, no. 4 (November 1, 1986): 499–506. http://dx.doi.org/10.2113/gseegeosci.xxiii.4.499.

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Meye, J. A., and P. E. Omoruwou. "Length-weight relationship and condition factor of Mochokidae Inase River, Niger Delta, Nigeria." Journal of Aquatic Sciences 31, no. 2A (January 18, 2017): 205. http://dx.doi.org/10.4314/jas.v31i2a.1.

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42

Djeresa, J. O., and V. F. Olaleye. "Levels of selected heavy metals inSynodontis membranaceousGeoffr. in Forcados River, Niger Delta, Nigeria." African Journal of Ecology 47, no. 3 (September 2009): 441–44. http://dx.doi.org/10.1111/j.1365-2028.2008.00946.x.

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43

Arimoro, Francis O., and Robert B. Ikomi. "Ecological integrity of upper Warri River, Niger Delta using aquatic insects as bioindicators." Ecological Indicators 9, no. 3 (May 2009): 455–61. http://dx.doi.org/10.1016/j.ecolind.2008.06.006.

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44

Oyo-Ita, Orok E., John O. Offem, Bassey O. Ekpo, and Peter A. Adie. "Anthropogenic PAHs in mangrove sediments of the Calabar River, SE Niger Delta, Nigeria." Applied Geochemistry 28 (January 2013): 212–19. http://dx.doi.org/10.1016/j.apgeochem.2012.09.011.

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45

Dienye, Henry Eyina, and Olaniyi Alaba Olopade. "Growth pattern of three species of Mullets (Pisces: Mugilidae) in Sombreior River, Rivers State, Niger Delta, Nigeria." Aceh Journal of Animal Science 5, no. 2 (May 12, 2020): 68–72. http://dx.doi.org/10.13170/ajas.5.2.15388.

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Length-weight relationships (LWRs) and condition factor are important biological information to assess the growth pattern and wellbeing of fish species influenced by numerous abiotic and biotic factors. To date, no data on the LWRs and condition of mullets in Sombreior River, Niger Delta. Hence, this research was conducted to determine abundance, length–weight relationship and Fulton’s condition factor (K) of three species of fish belonging to family Mugilidae in Sombreior River, Nigeria. There were a total of 248 samples from five sampling stations for a period of months. Fish species were of various sizes ranging from 24.66±0.40 to 26.35±0.26cm in length and 141.41±6.30 to 161.56±5.87g in weight. For the three species, slope (b) values ranged from 2.18 to 2.68 indicating a negative allometric growth of all fish species. The mean condition factor ranged from 0.89±0.03 forsix Mugil cephalus to 0.93±0.03 for Parachelon grandisquamis while the coefficients of determination (R2) of the LWR regressions ranged between 0.64 (Neochelon falcipinnis) and 0.79 (Parachelon grandisquamis). It was concluded that the mullets in the Sombreior River had a negative allometric growth pattern and the condition is showing the species were in good state of well-being since mean K values are greater than 1.

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46

Idomeh, Joyce E., Nnenna A. Isokpehi, Olufunke B. Shittu, and Kolapo A. Fasina. "Seasonal variations affect the physical and chemical parameters of inland waters: a case study of Warri River in Nigeria." International Journal of Halal Research 1, no. 1 (December 1, 2019): 1–7. http://dx.doi.org/10.18517/ijhr.1.1.1-7.2019.

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The Niger-Delta area in Nigeria is rich with rivers, swamps and creeks that are often subject to various forms of pollution. The effect of seasonal variations on the physical and chemical conditions of Warri River was studied in 2015. Temperature and pH values across all seasons fell within the optimum range formost aquatic organisms. Meanwhile, total dissolved solids exceeded the World Health Organization (WHO) permissible limit, especially during the dry season; indicating possible pollution from inorganic salts, organic matter and other dissolved materials in the water. The low dissolved oxygen value recorded was expected due to the high levels of dissolved solids recorded in the river. Lastly, phosphate, nitrate and sulphate concentrations recorded were below the WHO permissible limits. The chemical and biological parameters recorded indicate that the Warri River poses minimal threat to human and animal life.

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47

Pedinotti, V., A. Boone, B. Decharme, J. F. Crétaux, N. Mognard, G. Panthou, F. Papa, and B. A. Tanimoun. "Evaluation of the ISBA-TRIP continental hydrologic system over the Niger basin using in situ and satellite derived datasets." Hydrology and Earth System Sciences 16, no. 6 (June 26, 2012): 1745–73. http://dx.doi.org/10.5194/hess-16-1745-2012.

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Abstract. During the 1970s and 1980s, West Africa has faced extreme climate variations with extended drought conditions. Of particular importance is the Niger basin, since it traverses a large part of the Sahel and is thus a critical source of water for an ever-increasing local population in this semi arid region. However, the understanding of the hydrological processes over this basin is currently limited by the lack of spatially distributed surface water and discharge measurements. The purpose of this study is to evaluate the ability of the ISBA-TRIP continental hydrologic system to represent key processes related to the hydrological cycle of the Niger basin. ISBA-TRIP is currently used within a coupled global climate model, so that the scheme must represent the first order processes which are critical for representing the water cycle while retaining a limited number of parameters and a simple representation of the physics. To this end, the scheme uses first-order approximations to account explicitly for the surface river routing, the floodplain dynamics, and the water storage using a deep aquifer reservoir. In the current study, simulations are done at a 0.5 by 0.5° spatial resolution over the 2002–2007 period (in order to take advantage of the recent satellite record and data from the African Monsoon Multidisciplinary Analyses project, AMMA). Four configurations of the model are compared to evaluate the separate impacts of the flooding scheme and the aquifer on the water cycle. Moreover, the model is forced by two different rainfall datasets to consider the sensitivity of the model to rainfall input uncertainties. The model is evaluated using in situ discharge measurements as well as satellite derived flood extent, total continental water storage changes and river height changes. The basic analysis of in situ discharges confirms the impact of the inner delta area, known as a significant flooded area, on the discharge, characterized by a strong reduction of the streamflow after the delta compared to the streamflow before the delta. In the simulations, the flooding scheme leads to a non-negligible increase of evaporation over large flooded areas, which decreases the Niger river flow by 15% to 50% in the locations situated after the inner delta as a function of the input rainfall dataset used as forcing. This improves the simulation of the river discharge downstream of the delta, confirming the need for coupling the land surface scheme with the flood model. The deep aquifer reservoir improves Niger low flows and the recession law during the dry season. The comparison with 3 satellite products from the Gravity Recovery and Climated Experiment (GRACE) shows a non negligible contribution of the deeper soil layers to the total storage (34% for groundwater and aquifer). The simulations also show a non negligible sensitivity of the simulations to rain uncertainties especially concerning the discharge. Finally, sensitivity tests show that a good parameterization of routing is required to optimize simulation errors. Indeed, the modification of certain key parameters which can be observed from space (notably river height and flooded zones height changes and extent) has an impact on the model dynamics, thus it is suggested that improving the model input parameters using future developments in remote sensing technologies such as the joint CNES-NASA satellite project SWOT (Surface Water Ocean Topography), which will provide water heights and extentat land surface with an unprecedented 50–100 m resolution and precision.

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Idodo-Umeh, G. "Water Quality Assessment of River Areba, Niger Delta, Nigeria Using Physical and Chemical Indices." Tropical Freshwater Biology 22, no. 1 (September 29, 2014): 73. http://dx.doi.org/10.4314/tfb.v22i1.7.

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., Chukwujindu M. A. Iwegbue, Godwin E. Nwajei ., and Francis O. Arimoro . "Assessment of Contamination by Heavy Metals in Sediments of Ase River, Niger Delta, Nigeria." Research Journal of Environmental Sciences 1, no. 5 (May 1, 2007): 220–28. http://dx.doi.org/10.3923/rjes.2007.220.228.

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50

Effiong, K. S., A. I. Inyang, and U. U. Robert. "Spatial distribution and diversity of phytoplankton community in Eastern Obolo River Estuary, Niger Delta." Journal of Oceanography and Marine Science 9, no. 1 (January 31, 2018): 1–14. http://dx.doi.org/10.5897/joms2016.0139.

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