Influence of physico-chemical characteristics on the primary productivity of Nworie River, Imo State, Nigeria

2020 ◽  
Vol 34 (1) ◽  
pp. 87-96
Author(s):  
J.I. Ukagwu ◽  
D.C. Anyanwu ◽  
S. Ohaturonye ◽  
J.I. Offor
Keyword(s):  
Primary Productivity ◽  
Fish Culture ◽  
Chemical Parameters ◽  
Normal Range ◽  
Physico Chemical ◽  
Honestly Significant Difference ◽  
Significant Difference ◽  
Free Carbon Dioxide ◽  
Aquaculture Development ◽  
Made In

A twelve-month study was conducted to examine the influence of physico-chemical parameters on the primary production of Nworie River to assess its suitability for fish culture. Water samples were collected from three stations along the river course and examined for various parameters. Data collected were analyzed using multivariate analysis, stepwise linear regression and spearman correlation while Tukey’s honestly significant difference was used to separate the means. Results showed that water temperature was significantly different (p<0.05) at all stations and were within normal range for fish culture. Similar observation was made in, the levels of conductivity, total dissolved solids (TDS), nitrogen-nitrate, free carbon dioxide, depth, chlorine, hardness and primary productivity. The levels of dissolved oxygen (DO) and phosphate-phosphorus were not significant (p>0.05) but within normal range for fish culture. Alkalinity and pH showed significant differences (p<0.05) in all stations during the study. In Station 1, alkalinity and pH levels were 8.06±1.9mg/l and 5.4±0.3mg/l respectively. Heavy metal concentrations recorded revealed that the levels of Chromium (Cr), Cadmium (Cd), and Zinc (Zn) were significantly different (p<0.05) in all stations and were within permissible limit for fish culture while the level of lead (6.72±0.78 – 7.540.36mg/l) was not. The regression analysis revealed that variables in DO, TDS, free CO2, Cd, and depth influenced primary productivity and were both positively and negatively correlated at 5% and 1% probability levels respectively. The authors thus concluded that Nworie River may not support aquaculture development until some ecological situations are remedied. Keywords: Physico-chemical parameters, Aquaculture development, Nworie River, Fish culture

scholarly journals Physico-chemical parameters and primary productivity of a fish pond of Madhumara, Biratnagar

2013 ◽  
Vol 3 (1) ◽  
pp. 38-44
Author(s):  
Purna Bahadur Chhetri ◽  
Damodar Thapa Chhetry
Keyword(s):  
Primary Productivity ◽  
Net Primary Productivity ◽  
Winter Season ◽  
Summer Season ◽  
Fish Pond ◽  
Community Respiration ◽  
Total Hardness ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Free Carbon Dioxide

The physico-chemical parameters and primary productivity of a fish pond of Madhumara, Biratnagar was studied from October 2007 to September 2008. The maximum air and water temperature and water transparency were recorded in rainy season, whereas maximum pH, dissolved oxygen and chloride were recorded in winter season.  Free carbon dioxide and total hardness were maximum in summer season. The gross primary productivity, net primary productivity and community respiration were found maximum in winter season.

scholarly journals Polysaccharide based edible coating on sapota fruit

2016 ◽  
Vol 30 (4) ◽  
pp. 551-557 ◽  
Author(s):  
Joslin Menezes ◽  
K.A. Athmaselvi
Keyword(s):  
Shelf Life ◽  
Edible Coating ◽  
Agricultural Products ◽  
Soluble Solids ◽  
Ambient Conditions ◽  
Chemical Parameters ◽  
Organoleptic Properties ◽  
Physico Chemical ◽  
Significant Difference ◽  
Dipping Time

AbstractSapota fruits are highly perishable and have short shelf life at the ambient conditions. The edible coatings have been used on different agricultural products in order to extend their post harvest life. In the present study, the polysaccharide based edible coating made up of sodium alginate and pectin (2%) was studied on the shelf life of sapota fruits. The coating of the fruits is done by dipping method with two dipping time (2 and 4 min). The both control and coated sapota fruits were stored at refrigerated temperature (4±1°C). The physico-chemical analysis including acidity, total soluble solids, ascorbic acid, pH, weight loss, colour and firmness were measured on 1, 8, 15, 23 and 30th day of storage. There was significant difference (p≤0.05) in these physico-chemical parameters between control and coated sapota fruits with 2 and 4 min dipping time. The sensory analysis of control and coated sapota fruits showed that, the polysaccharide coating with 2 minutes dipping time was effective in maintaining the organoleptic properties of the fruits.

scholarly journals Spatial and Monthly Changes in Interstitial Water Physico-Chemistry of Bodo Creek

2021 ◽  
pp. 1-8
Author(s):  
D. K. Nkeeh ◽  
A. I. Hart ◽  
E. S. Erondu ◽  
N. Zabbey
Keyword(s):  
Oxygen Demand ◽  
Aquatic Organisms ◽  
Ion Concentration ◽  
Chemical Parameters ◽  
Monthly Basis ◽  
Hydrogen Ion Concentration ◽  
Quality Of Water ◽  
Physico Chemical ◽  
Significant Difference ◽  
High Level

Water plays a key role in the survival, growth and reproduction of aquatic organisms. Therefore maintaining good quality of water physico-chemical parameters would ensure optimum productivity of aquatic fauna. The study evaluated water physical and chemical parameters (temperature, hydrogen ion concentration (pH), conductivity, dissolved oxygen (DO) and biochemical oxygen demand (BOD) of Bodo Creek. Sample was collected for 5 months (July 2020 – November 2020) at locations previously studied (before-spill baseline studies, 3 years, 5 years, and 7 years after-spill); by using the sampling methods used in previous studies. Spatially, there was no statistically significant difference in temperature (p > 0.05 = 0.997), pH (p > 0.05 = 0.496), DO (p > 0.05= 0.34) and BOD (p > 0.05 = 0.644). However, the difference in conductivity between the stations was statistically significant (p < 0.05 = 0.006). On monthly basis, there was a significant difference in temperature (p < 0.05 = 0.000) and pH (p < 0.05 = 0.005). In contrast, there was no statistically significant difference in conductivity (p > 0.05 = 0.633), DO (p > 0.05 = 0.559) and BOD (p > 0.05 = 0.75). Most of the physico-chemical parameters were not within the WHO recommended levels for the survival of aquatic lives, indicating a high level of environmental pollution in Bodo Creek. This study provides dataset for future evaluation of the water physico-chemistry of Bodo Creek.

scholarly journals Seasonal variation in quality of Louhajong river water, Tangail

2016 ◽  
Vol 28 (1) ◽  
pp. 9-16
Author(s):  
Md Rakib Hasan Sarker ◽  
Asadul Islam ◽  
Ariful Islam ◽  
Md Mahbubul Hoque ◽  
Shimul Roy
Keyword(s):  
Seasonal Variation ◽  
River Water ◽  
Water Samples ◽  
Dry Season ◽  
Fish Culture ◽  
Chemical Parameters ◽  
Wet Season ◽  
Physico Chemical ◽  
Standard Level

Water samples were collected from three points of Louhajong river (Dighulia, Kagmari Bridge and Oloa) to see the seasonal variation in physico-chemical parameters. The results revealed that some of the parameters such as TDS, alkalinity and acidity have exceeded the standard level in dry season in all of the points, which are unsuitable for different purposes including fish culture. During dry and wet seasons the highest concentrations of BOD was recorded as 2.0 and 0.8 ppm at Kagmari Bridge (point-2) respectively. DO ranged from 1.4 to 3.1 and 2.4 to 3.8 ppm during dry and wet seasons. Maximum and minimum EC was recorded as 890 and 130 ?s/cm at Dighulia (point-1) during dry and wet seasons. The results suggest that at wet season Louhajong river may be suitable for fish culture and other purposes.Bangladesh J. Sci. Res. 28(1): 9-16, June-2015

scholarly journals Distribution and Diversity of Macrophytes in Relation to Some Physico-Chemical Factors in the Ketar River, Ziway Catchment, Ethiopia

2021 ◽  
Author(s):  
Yadesa Chibsa ◽  
Seyoum Mengistou ◽  
Demeke Kifle
Keyword(s):  
Relative Frequency ◽  
Nutrient Loading ◽  
Anthropogenic Activities ◽  
Pistia Stratiotes ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Significant Difference ◽  
Chemical Factors ◽  
Floating Macrophytes ◽  
Favorable Conditions

Abstract Distribution and diversity of macrophytes in relation to some physico-chemical factors in the Ketar River were studied from December, 2017 to November, 2018. Physico-chemical parameters and macrophytes were collected from three stations along the river for eight months. Onsite measurements and laboratory work of physico-chemical was analyzed as recommended by APHA [31]. Macrophytes were collected manually using belt transect method. Except for pH and surface water temperatures, all the physico-chemical parameters measured showed no significant difference spatially. During the study period, sixteen macrophyte species belonged to fourteen families were identified. Among the identified macrophyte, 11 of them were emergent, while 3 were rooted with floating leaves and 2 free-floating. Free-floating macrophytes were shared the highest abundance followed by emergent. This research observed that the site (site 3) that was exposed to minimal human impact was rich in diversity and abundance of macrophytes. All the sites were dominated by emergent macrophytes that attained the highest relative frequency followed by rooted emergent species. Azolla nilotica and Pistia stratiotes were shared the highest abundance and were the dominant macrophyte with the relative frequency of 7.24% and density of 40.91%, and 7.93% and 26.54%, respectively. Under a favorable environment, nutrient loading from nearby creates more favorable conditions for the infestation of the invasive species (A. nilotica and P. stratiotes) to flourish and out-compete the other species of macrophyte. Therefore, anthropogenic activities that enhance nutrient addition to the River should be regulated.

scholarly journals Comparative Analysis of some Water Quality Parameters of three Lakes in Jahangirnagar University Campus, Savar, Bangladesh

2016 ◽  
Vol 43 (2) ◽  
pp. 239-250
Author(s):  
Md Ashrafur Rahman ◽  
Sabira Sultana ◽  
Md Abdus Salam
Keyword(s):  
Water Depth ◽  
Quality Parameters ◽  
Total Alkalinity ◽  
University Campus ◽  
Chemical Parameters ◽  
Water Color ◽  
Normal Range ◽  
Temperature Conductivity ◽  
Physico Chemical ◽  
Depth Water

Study was conducted to determine the physico-chemical parameters of water of three different lakes in Jahangirnagar University campus from March to November, 2013. The selected parameters were water depth, water temperature, conductivity, transparency, pH, dissolve O2, free CO2, total alkalinity, hardness, sulfate and water color. Water depth fluctuated from 140 cm to 385 cm, temperature ranged from 250C to 310C, conductivities ranged from 627 ?S/cm to 1544 ?S/cm, transparency from 22 cm to 87 cm, considerable variation of water colors were found and pH ranged from 6.4 to 7.5 without having any significant fluctuation. Dissolve oxygen (DO) ranged from 2.7 mg/l to 7.6 mg/l, carbon dioxide level ranged from 16 mg/l to 62 mg/l, total alkalinity and hardness were ranged from 43 mg/l to 92 mg/l and 63 mg/l to 134 mg/l, respectively with slight variations in different lakes in different months. During the study period, all the spots showed minimum fluctuation of physico-chemical parameters from the normal range without having some exceptions.Bangladesh J. Zool. 43(2): 239-250, 2015

scholarly journals ASSESSMENT OF WATER QUALITY (PHYSICO-CHEMICAL) OF KANEKAL TANK, ANANTAPURAMU DIST., AP, INDIA.

1970 ◽  
pp. 08-15
Author(s):  
PHILIP HAROLD GUNDALA ◽  
JAYARAM NAIK V N ◽  
VENKATA RAMANAIAH KOLALA
Keyword(s):  
Water Quality ◽  
Domestic Sewage ◽  
Total Hardness ◽  
Chemical Parameters ◽  
Standard Methods ◽  
Physico Chemical ◽  
Free Carbon Dioxide ◽  
Calcium Magnesium ◽  
Tank Water ◽  
Magnesium Phosphates

Abstract: Different Physico-chemical parameters of Kanekal tank water, Kanekal were estimated from October 2012 to September 2014 to assess its quality. The different parameters like Temperature, pH, TDS, conductivity, salinity, dissolved oxygen, turbidity, alkalinity, free carbon dioxide, chloride, total hardness, calcium, magnesium, phosphates, sulphates, silicates, nitrites, nitrates, BOD and COD were carried out by standard methods. These parameters showed either positive or negative correlation between each other. The analysis revels these parameters are interrelated with each other. From the data it can be said that water of this tank is partially contaminated with human faeces, domestic sewage etc. Hence it is not good quality for culture of fish as well as drinking for animals.Keywords –Kanekal Tank, water quality, Physico-chemical parameters, BOD, COD

scholarly journals Assessment of Some Physico-Chemical Parameters of Lagos Lagoon, Southwestern Nigeria

2019 ◽  
pp. 09-11
Author(s):  
Peter Olaoye Oyeleke ◽  
Samuel Olatunde Popoola ◽  
Olushola Ayoola Abiodun
Keyword(s):  
Dissolved Oxygen ◽  
Point Source ◽  
Anthropogenic Activities ◽  
Health And Safety ◽  
Chemical Parameters ◽  
Southwestern Nigeria ◽  
Mean Values ◽  
Physico Chemical ◽  
Significant Difference ◽  
Lagos Lagoon

The pollution status of Lagos Lagoon was investigated to determine some physical and chemical parameters, in order to further understand its water quality. Five locations were selected according to the anthropogenic activities taking place in the areas. The measured parameters are water temperature, salinity, conductivity, pH, dissolved oxygen (DO) and alkalinity. The mean values ranged from 28.50-30.15°C for temperature, 7.86-8.50 for pH, ND-10.60‰ for salinity, 0.18-15.20µS/cm for electrical conductivity, 12.00-14.00 mg/l for alkalinity and 1.60-6.40 mg/l for dissolved oxygen. The statistical analysis of the measured physicochemical parameters revealed non-significant difference (p>0.05) across all stations in the physico-chemical parameters. Generally, the values obtained suggest the influence of anthropogenic activities especially the depletion of DO in most of the stations. Therefore, point source and non-point source pollution into the Lagos Lagoon should be controlled for the health and safety of the aquatic ecosystems. Generally, all the measured parameters were either below or within the permissible limits obtainable in the marine environment.

Water Quality Assessment of the South-Eastern Part of Lake Lanao, Philippines

2017 ◽  
Vol 63 ◽  
pp. 34-41 ◽  
Author(s):  
Norzeda B. Angagao ◽  
Maria Alma D. Quiao ◽  
Elnor C. Roa ◽  
Grace I. Prado
Keyword(s):  
Water Quality ◽  
Water Quality Assessment ◽  
The Philippines ◽  
National Standards ◽  
Physical Parameters ◽  
Chemical Characteristics ◽  
Chemical Parameters ◽  
Perceptions And Attitudes ◽  
Physico Chemical ◽  
Significant Difference

This paper aimed at underlying some physico-chemical characteristics of the water of Lake Lanao at Poona-bayabao, Lanao Del Sur during the first quarter of 2015, by evaluating a total of eight (8) water quality parameters. Physical parameters were temperature, depth, transparency, and total suspended solids. On the other hand, the chemical parameters were pH, dissolved oxygen, phosphate and nitrate. Three sampling stations were considered in the study. Community’s knowledge, perceptions, and attitudes towards the utilization and condition of the lake were also evaluated through interview. Results showed that all assessed physico-chemical parameters still conformed to the Philippines standards set by Department of Environment and Natural Resources (DENR) for fresh surface water as Class A as for the year 2015. One-way Anova showed no significant difference in the overall average of the physico-chemical characteristics in the three sampling stations of Lake Lanao (p > 0.05). With the results obtained, the Lake can still be a source of water supply that require complete treatment in order to meet National Standards for Drinking Water (NSDW) of the Philippines, within the year of the conduct of the study. For the assessment of community’s knowledge, perceptions, and attitudes, Kruskal-Wallis test showed that the knowledge, perceptions, and attitudes are not significantly different in terms of stations. A more comprehensive and wider range monitoring is recommended for future study about the lake.

scholarly journals Water Beetles: Species Diversity and Response to Physico-Chemical Parameters in Different Freshwater Habitats in Samtse, Bhutan

2021 ◽  
Vol 10 (1) ◽  
pp. 64-82
Author(s):  
Tez Bdr Ghalley ◽  
Ugyen Dorji ◽  
Cheten Dorji ◽  
Arjun Nepal ◽  
Namgay Shacha
Keyword(s):  
Diversity Index ◽  
Similarity Index ◽  
Abundant Species ◽  
Shannon Diversity Index ◽  
Chemical Parameters ◽  
Water Beetles ◽  
Shannon Diversity ◽  
Physico Chemical ◽  
Significant Difference ◽  
Freshwater Habitats

Bhutan is located between the two zoogeographic regions which are assumed to be rich in diversity of water beetles. The study aimed to determine the diversity and distribution pattern of water beetles in different freshwater habitats in Namgaychholing under Samtse district, Bhutan. The study also analysed the association of water beetles with the physico-chemical parameters. The data were collected from four different habitats with sample plot of 3 m × 1 m for a standard time of 1 hour in every plot. A total of 30 species belonging to 7 families were recorded of which Dytiscidae (n=626, RA=51) was the most abundant family and Lacconectus basalis (n=416, RA=34.13) was the most abundant species. The overall Shannon diversity index of the study area was H ′=2.48. Amongst the different habitats, marshy area had the highest Shannon diversity index (H ′=2.45) and stream had the lowest (H ′=1.82). A Kruskal Wallis test on diversity among different habitats showed no significant difference (p<.05). Through a cluster analysis, the species composition between the river and waterlogged showed 100% similarity index. Canonical correspondence analysis showed temperature as a main determining factor affecting the distribution of water beetles. With broad families encompassing the water beetles, similar study on water beetles in different regions of the country is recommended with particular emphasis on different families. Moreover, Bhutan falls in junction of Palearctic and Oriental Zoogeographic regions, which are known to be rich in diversity of water beetles. Hence, study in high-altitude lakes, which are assumed to be rich in diversity of water beetles are recommended despite social beliefs to keep lakes isolated and undisturbed.

Sign in / Sign up

Export Citation Format

Share Document