Assessment of the impact of abattoir effluent on the physico-chemical and microbiological characteristics of the Effurun River, Effurun and Eburu Canal, Warri in Delta State, Nigeria

Water is said to be polluted when it is impaired by anthropogenic contaminants and natural phenomena. An assessment of the impact of effluent from the Effurun market abattoir and Eburu abattoir on the physico-chemical parameters of the Effurun River, Effurun and Eburu canal, Warri, Delta State was carried out from July to December 2015 at three designated stations: station 1 (Upstream of effluent discharge point), station 2 (Effluent discharge point) and station 3 (Downstream of effluent discharge point). In the Effurun River, analysis of variance (ANOVA) revealed significant spatial variation (P<0.05) in electrical conductivity, salinity, BOD5 (Biological Oxygen Demand), COD (Chemical Oxygen Demand), TSS (Total Suspended Solids), PO4 (Phosphate), TS (Total Solids), and TDS (Total Dissolved Solids) while in Eburu canal, significant spatial variation (P<0.05) was observed in salinity, BOD5, TS, TDS and TSS. A posteriori test using the Duncan Multiple Range (DMR) test revealed that these indicator parameters were significantly higher in station 2 than in the other stations of the Effurun River and Eburu canal. The values of fecal coliform count and total coliform count increased from station 1 to station 2 and slightly decreased in station 3 in the Effurun River and Eburu canal respectively. Chi-square goodness of fit showed significant difference (P<0.001) in station 2. Both water bodies showed very low recovery capacities (less than 50%). The current water quality status of both water bodies from the discharge of abattoir effluents poses environmental and health problems to the end users. Most of the parameters exceeded the regulatory limits hence the need to treat waste before discharging into the ecosystem

Assessing the environmental impacts of oil exploration and production on the water quality of Osse River, Southern Nigeria

The concentrations of some physico-chemical parameters of the Osse River were studied to assess the impacts of Dubri Oil Company operations. Samples were collected between July 2000 and June 2002 from five stations: Station 1 and 2 (upstream), Station 3 (Gelegele Port/Oil Company site) and Stations 4 and 5 (downstream). The concentrations of these parameters in the river ranged from 26.1 – 33.7oC for air temperature, 25.2 – 29.1oC (water temperature); 38.0 – 225cm (Transparency); 2.3 – 58NTU (Turbidity); 42.5 – 520.20mgl-1 (TDS); 14.66 – 210.04mgl-1 (TSS); 57.14 – 701.50mgl-1 (TS); 5.55 – 7.91 (pH); 4.40 – 11.60mgl-1 (DO); 0.80 – 5.60mgl-1 (BOD5); 10.0 – 208scm-1 (Conductivity); 17.50 – 100mg CaCo3-1 (Alkalinity); 7.02 – 34.50mgl-1 (Chloride); 0.02 – 0.43mgl-1 (Sulphate); 0.04 – 0.73mgl-1 (Nitrate); 0.28 – 3.52mgl-1 (Phosphate); 0.18 – 19.1mgl-1 (Sodium); 0.11 – 6.2mgl-1 (Potassium); 1.11 – 9.62mgl-1 (Calcium) and 0.20 – 7.78mgl-1 for magnesium. With the exception of air temperature, transparency, turbidity, suspended solid, dissolved solids, total solids, biochemical oxygen demand and nitrate which were significantly different (P 0.05) in the study stations. The impacts of the oil exploration and production operations of the Oil Company on the water quality was negligible as all parameters were relatively homogenous across the study stations, and were below the WHO guidelines for domestic usage. The environmental conditions studied have been discussed in relation to the general water quality standard. Global Journal of Environmental Sciences Vol. 6 (1) 2007: pp. 1-1

Phytophilous Macroinvertebrates of Floating Nymphaea lotus and Pistia stratiotes in River Orogodo, Niger Delta, Nigeria

Phytophilous macroinvertebrates associated with two dominant floating aquatic macrophytes, water lilly (Nymphaea lotus) and water lettuce (Pistia stratiotes) in River Orogodo, Niger Delta were sampled between February and July 2006. The location of both plant species exhibited similar water quality characteristics during the study except for BOD5, pH and nitrate that were significantly different (

The Gastrointestinal Helminth Parasites of the Threadfin Fish, Polydactylus quadrifilis (Family: Polynemidae) in a Niger Delta Mangrove Creek, Nigeria

Abstract: This study which is the ninth in a series to provide data on the biology and ecology of fish species of Buguma Creek, is the first to provide information on the gastrointestinal helminth parasites of the threadfin fish, Polydactylus quadrifilis in any Niger Delta mangrove creek, estuarine or marine ecosystem in Nigeria. Threadfin fish, Polydactylus quadrifilis was isolated from fish samples collected monthly from November 2004 to June 2006 at flood tides in Buguma Creek, Niger Delta Nigeria. The fish samples were caught by the use of hooks and lines and cast nets. A total of 76 specimens were examined for gastrointestinal helminth parasites. All helminth parasites observed were nematodes. The fish species had a prevalence of 15.8%, i.e., 12 infected out of 76. A total of 7 nematode helminth parasite species belonging to 6 families were recorded. Of the 7 species recorded, Goezia sigalasi (Ascarididae) had the highest prevalence of 6.6% while the other species had equal prevalence of 1.3%. The family, Cathostomatidae was represented by two species: Phacochoerostrongylus sp. and Chapiniella sp., while other families were represented by 1 species each

Application of Some Biometric Indices in the Assessment of the Water Quality of the Benin River, Niger Delta, Nigeria

Rapid Bioassessment Protocols (RBP) using some biometric indices including taxa richness, Ephemeroptera, Plecoptera, and Trichoptera (EPT) taxa richness, EPT to total ratio, Hilsenhoff’s Biotic Index (HBI) and Percent Model Affinity Score (PMAS) were employed in assessment of the water quality of the Benin River. The results showed that the water quality varied from non-impacted to severely impacted. HBI and PMAS showed similar results among the designated stations along the river. Shannon (H’) and Margalef (d’) diversity indices were highest at stations 4 and 3 respectively. The biometric and diversity indices adopted in this study are better for assessing organic pollution and eutrophication but inadequate for assessing toxic inorganic pollution. More assessments using various biometric indices are needed for investigation in order to fully ascertain their consistency with the physico-chemical parameters. The merits of the different biometrics are reported.Keywords: Water quality, biometric indices, diversity, assessment, Benin Rive

-151 - ASPECTS OF SPECIES RICHNESS AND SEASONALITY OF AMPHIBIANS AND REPTILES IN THE COASTAL BARRIER ISLAND OF BRASS (NIgERIA)

suMMARY. -The ecology of the communities of amphibians and reptiles are nearly unknown in the coastal barrier island forests of the Niger Delta, southern Nigeria. In this paper, we examine aspects of species richness and phenology of amphibians and reptiles at several sites of Brass Island, one of the main coastal barrier islands of Nigeria. We employed a suite of field methods to capture specimens, and performed an equal field effort during both dry and wet seasons. Overall, we captured 31 species belonging to 17 families. For amphibians, we collected one species of Pipidae and Ranidae, and two of Ptychadenidae, Bufonidae, and Hyperoliidae. For reptiles, we captured one species of Agamidae, Varanidae, Chamaeleonidae, Typhlopidae, Viperidae, and Pelomedusidae, two of Boidae, Testudinidae and Crocodylidae, three of Scincidae and Elapidae, and five of Colubridae sensu lato. Fewer species were found in coastal barrier island forests than in swamp forests, mangroves or derived savannas of the Niger Delta. There was no clear seasonal effect on reptile abundance and diversity (but most species were found essentially by dry season), whereas for amphibians there was a strong seasonal effect, with higher abundances and species diversity found in wet season

Aspects of species richness and seasonality of amphibians and reptiles in the Coastal Barrier Island of Brass (Nigeria)

Summary. — The ecology of the communities of amphibians and reptiles are nearly unknown in the coastal barrier island forests of the Niger Delta, southern Nigeria. In this paper, we examine aspects of species richness and phenology of amphibians and reptiles at several sites of Brass Island, one of the main coastal barrier islands of Nigeria. We employed a suite of field methods to capture specimens, and performed an equal field effort during both dry and wet seasons. Overall, we captured 31 species belonging to 17 families. For amphibians, we collected one species of Pipidae and Ranidae, and two of Ptychadenidae, Bufonidae, and Hyperoliidae. For reptiles, we captured one species of Agamidae, Varanidae, Chamaeleonidae, Typhlopidae, Viperidae, and Pelomedusidae, two of Boidae, Testudinidae and Crocodylidae, three of Scincidae and Elapidae, and five of Colubridae sensu lato. Fewer species were found in coastal barrier island forests than in swamp forests, mangroves or derived savannas of the Niger Delta. There was no clear seasonal effect on reptile abundance and diversity (but most species were found essentially by dry season), whereas for amphibians there was a strong seasonal effect, with higher abundances and species diversity found in wet season.Résumé. — Aspects de la richesse spécifique et de la saisonnalité des amphibiens et reptiles de l’île-barrière côtière de Brass (Nigéria). — L’écologie des communautés d’amphibiens et de reptiles des forêts des îles-barrières côtières du delta du Niger, sud du Nigéria, est pratiquement inconnue. Dans cet article nous examinons la richesse spécifique et la saisonnalité des amphibiens et reptiles en divers sites de l’île de Brass, l’une des principales îles-barrières du Nigéria. Nous avons utilisé une série de méthodes pour capturer des spécimens et conduire un effort de terrain équilibré durant les saisons sèche et humide. En tout, 31 espèces appartenant à 17 familles ont été capturées. En ce qui concerne les amphibiens, nous avons collecté une espèce pour les Pipidés et les Ranidés, deux pour les Ptychadénidés, Bufonidés et Hyperoliidés. En reptiles, nous avons capturé une espèce pour les Agamidés, Varanidés, Chamaeléonidés, Typhlopidés, Vipéridés et Pélomédusidés, deux pour les Boïdés, Testudinidés et Crocodylidés, trois pour les Scincidés et Elapidés, cinq pour les Colubridés sensu lato. Moins d’espèces ont été trouvées dans les forêts d’île-barrière côtière que dans les forêts marécageuses, mangroves ou savanes dérivées du delta du Niger. Il n’est pas apparu d’effet saison clair sur l’abondance et la diversité des reptiles (mais la plupart des espèces ont essentiellement été trouvées en saison sèche) alors que, pour les amphibiens, un tel effet s’est avéré fort, avec de plus fortes abondances et diversités spécifiques en saison des pluies.Akani Godfrey C., Luiselli Luca, Ogbeibu Anthony E., Onwuteaka John N., Chuku Edith, Osakwe J.A, Bombi Pierluigi, Amuzie Charity C., Uwagbae Michael, Gijo Harry A. Aspects of species richness and seasonality of amphibians and reptiles in the Coastal Barrier Island of Brass (Nigeria). In: Revue d'Écologie (La Terre et La Vie), tome 65, n°2, 2010. pp. 151-161