Spatial Variation in Physical and Chemical Parameters and Macro-Invertebrates in the Intertidal Regions of Calabar River, Nigeria

Effanga, E. O.; Andem, A. B; George, U. U; Amos, Dwayne

doi:10.15580/gjges.2013.2.080913775

Cited by 16 publications

(14 citation statements)

References 15 publications

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“…The mean sulphate in the 3 stations was lower than the permissible limit (WHO, 2004). 0.01 -26.60 mg/l was recorded by Okorafor et al (2013). Calcium ranged from 1.60 in station 3 to 28.10 mg/l in station 1.…”

Section: Resultsmentioning

confidence: 92%

Assessment of Physical and Chemical Characteristics of Surface Water from River Niger, Illushi, Edo State, Nigeria

Oseji¹,

Uwaifo²,

Omogbeme³

2019

Journal of Applied Sciences and Environmental Management

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The physical and chemical characteristics of River Niger, Illushi an important fishing site in Edo State which is currently impacted by human activities, was investigated between the month of April and November, 2017. Surface water samples were collected from three (3) sampling stations covering a total distance of 2600metres from upstream to downstream, and a total of seventeen (17) physical/chemical parameters were investigated. Findings from this study revealed that Air temperature had an average mean value of 27±0.72 mg/L, Water temperature was 26.21±0.

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Section: Resultsmentioning

confidence: 92%

Assessment of Physical and Chemical Characteristics of Surface Water from River Niger, Illushi, Edo State, Nigeria

Oseji¹,

Uwaifo²,

Omogbeme³

2019

Journal of Applied Sciences and Environmental Management

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“…DO tends to reduce in concentration when effluents containing cations compete for binding sites with the hydroxyl group in water molecule to form other compounds thereby depleting the water body of its dissolved oxygen (Pollock et al 2007). According to Okorafor et al (2013), DO level of 1 to 5mg/L will slow down the growth of fishes when continuously exposed, while levels below 1mg/L are reportedly fatal to fish when exposed for more than a few hours. Water parameters such as alkalinity, hardness, BOD, conductivity and COD in this study were lower than that reported in Owudu creek in Niger Delta, Nigeria and in Gangetic Delta Region, West Bengal, India respectively (Friday et al 2013).…”

Section: Discussionmentioning

confidence: 99%

Comparative assessment of wellbeing of Chrysichthys filamentosus, Kribia nana and Pegusa lascaris from Tomaro, Ajegunle and Badagry Creeks in Lagos, Nigeria

Mekuleyi

Yaji²,

Adelere³

2021

Bangladesh J. Fish.

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An investigation was made from April to September 2018 to detect some metals (cadmium, chromium, copper, iron, lead and zinc) in the fishes like Kribia nana, Chrysichthys filamentosus and Pegusa lascaris, as well as in water and sediment from three creeks i.e. Badagry (Station 1), Tomaro (Station 2) and Ajegunle (Station 3) in Lagos, Nigeria. Samples were collected and analyzed according to standard methods. Most of the water quality parameters are within standard recommended limits. Iron content in C. filamentosus (11.57±2.50mg/kg) from station 3 was higher (p<0.05) than iron content from station 2 (6.54±2.88mg/kg), while iron content in K. nana (8.34±1.10mg/kg) from station 3 was higher (p<0.05) than that from station 1 (6.12±1.04mg/kg) and station 2 (3.62±1.14mg/kg) respectively. Zinc (5.54±1.12mg/kg) recorded from station 3 was significantly (p<0.05) higher than that from station 2 (2.45±0.96mg/kg) and station 1 (3.84±0.86mg/kg). Iron content in all the fishes, cadmium in C. filamentosus and lead, chromium, copper in K. nana in stations 1 and 3 exceeded permissible limits. Condition factor (K) of most fish species was greater than 1. The Hazardous Index (HI) content in C. filamentosus from the three creeks and K. nana from stations 1 and 3 was above 1. Ecological risk factor(Er), enrichment factors (EF) and Index of geo-accumulation indicated moderate contamination of the sediment with cadmium. In conclusion, the three creeks are moderately polluted with metals but consumption of large quantity of the fish species could have high health risk. Hence, discharge of untreated metals into the water should be precluded.

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“…In marine environments where there are inputs from human activities, the flora of the benthic community might be adversely affected unlike in undisturbed environment. The water quality of any river will likely affect the abundance and diversity of the benthic invertebrates of the river system [19].…”

Section: Introductionmentioning

confidence: 99%

Impact of Nypa Palm (<i>Nypa fruticans </i>Wurmb<i>) </i>and Mangroves Forest on Benthic Macro Invertebrate Community in Andoni River, Nigeria

Emoyoma

Numbere

Woke

2020

ILNS

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It is postulated that the presence of nypa palm (Nypa palm) in mangrove forest affect the reproductive function of fish by inhibiting the growth of macro invertebrates. The impact of Nypa fruticans (Wurmb) and mangroves on the benthic macro invertebrate community of Andoni River was carried out between January and August, 2017. A total of four stations were chosen based on nypa palm and native mangrove species’ presence and absence, station 1 (Open water), Station 2 (Nypa palm dominance), station 3 (Rhizophora and Avicennia dominance), Station 4 (Mixed). Results of water quality parameters include; pH 6.99±0.16, Temperature 28.20±0.05°C, DO 4.71±0.18mg/L, Conductivity 19.52±0.20µm/s, Salinity 10.76±0.07ppt, TDS 13.45±0.27ppt. Mean values of the physico-chemical parameters (P > 0.05) were not significantly different. Twelve taxa of benthic macro-invertebrates in eleven families were collected. The crustaceans were more in diversity (38.46%), while bivalvia, pisces and oligochaete had the least percentage composition (7.69%). The gastropods were more in species dominance (44.69%), while the Oligochaeta were least in abundance (0.61%). Shannon Weiner’s index across the stations for benthos was highest in station 2 (1.840) and lowest in station 1 (1.103). Simpson’s index was highest in station 2 (1.990) and lowest in station 1 (1.938). Pielou’s index of evenness was highest in station 2 (0.767) and lowest in station 1 (0.616). All the macro-invertebrates recorded were clean water and pollution tolerant species, and showed no significant difference across stations (P>0.05). In conclusion this study indicates that nypa palm does not affect the proliferation of macro invertebrates, which supports fishery population along the food chain.

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Spatial Variation in Physical and Chemical Parameters and Macro-Invertebrates in the Intertidal Regions of Calabar River, Nigeria

Cited by 16 publications

References 15 publications

Assessment of Physical and Chemical Characteristics of Surface Water from River Niger, Illushi, Edo State, Nigeria

Assessment of Physical and Chemical Characteristics of Surface Water from River Niger, Illushi, Edo State, Nigeria

Comparative assessment of wellbeing of Chrysichthys filamentosus, Kribia nana and Pegusa lascaris from Tomaro, Ajegunle and Badagry Creeks in Lagos, Nigeria

Impact of Nypa Palm (<i>Nypa fruticans </i>Wurmb<i>) </i>and Mangroves Forest on Benthic Macro Invertebrate Community in Andoni River, Nigeria

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