Assessment of water quality, macroinvertebrate biomass and primary productivity of small water bodies for increased fish production in the Lake Victoria basin, Kenya

2013 ◽  
Vol 18 (2) ◽  
pp. 89-97 ◽  
Author(s):  
Steve O. Ngodhe ◽  
Phillip O. Raburu ◽  
Geraldine M. Kasisi ◽  
Patrick O. Orwa
Keyword(s):  
Water Quality ◽  
Primary Productivity ◽  
Lake Victoria ◽  
Water Bodies ◽  
Fish Production ◽  
Lake Victoria Basin ◽  
Small Water ◽  
Small Water Bodies

scholarly journals Effect of Eichhornia crassipes on coliforms load in small water bodies within Lake Victoria basin, Kenya

2015 ◽  
Vol 9 (10) ◽  
pp. 736-740
Author(s):  
Ombwa Veronica ◽  
Orwa Patrick ◽  
Mutie Alice ◽  
Omondi Reuben ◽  
Werimo Kenneth ◽  
...  
Keyword(s):  
Eichhornia Crassipes ◽  
Lake Victoria ◽  
Water Bodies ◽  
Lake Victoria Basin ◽  
Small Water ◽  
Small Water Bodies

scholarly journals Small Water Body Detection and Water Quality Variations with Changing Human Activity Intensity in Wuhan

2022 ◽  
Vol 14 (1) ◽  
pp. 200
Author(s):  
Lingjun Wang ◽  
Wanjuan Bie ◽  
Haocheng Li ◽  
Tanghong Liao ◽  
Xingxing Ding ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
Water Body ◽  
Human Activities ◽  
Water Bodies ◽  
Small Water ◽  
Small Water Body ◽  
Water Indices ◽  
Small Water Bodies

Small water bodies ranging in size from 1 to 50,000 m2, are numerous, widely distributed, and have various functions in water storage, agriculture, and fisheries. Small water bodies used for agriculture and fisheries are economically significant in China, hence it is important to properly identify and analyze them. In remote sensing technology, water body identification based on band analysis, image classification, and water indices are often designed for large, homogenous water bodies. Traditional water indices are often less accurate for small water bodies, which often contain submerged or floating plants or easily confused with hill shade. Water quality inversion commonly depends on establishing the relationship between the concentration of water constituents and the observed spectral reflectance. However, individual variation in water quality in small water bodies is enormous and often far beyond the range of existing water quality inversion models. In this study, we propose a method for small water body identification and water quality estimation and test its applicability in Wuhan. The kappa coefficient of small water body identification is over 0.95, and the coefficient of determination of the water quality inversion model is over 0.9. Our results show that the method proposed in this study can be employed to accurately monitor the dynamics of small water bodies. Due to the outbreak of the COVID-19 pandemic, the intensity of human activities decreased. As a response, significant changes in the water quality of small water bodies were observed. The results also suggest that the water quality of small water bodies under different production modes (intensive/casual) respond differently in spatial and temporal dimensions to the decrease in human activities. These results illustrate that effective remote sensing monitoring of small water bodies can provide valuable information on water quality.

Contribution of fish farmers to conservation of endangered Lake Victoria Basin fish species - the case of Oreochromis variabilis and O. esculentus.

2020 ◽  
Author(s):  
Harrison Charo-Karisa ◽  
Jacob Maithya
Keyword(s):  
Growth Performance ◽  
Fish Species ◽  
Lake Victoria ◽  
Culture Conditions ◽  
Water Bodies ◽  
Lake Victoria Basin ◽  
Endangered Fish ◽  
Small Water ◽  
Course Of Action

Abstract This paper discussed the conservation efforts of fish farmers of two endangered fish species in Lake Victoria namely Oreochromis variabilis and O. esculentus. Highlights focused on the determination of their growth performance under culture conditions, assessing their suitability for aquaculture, recruiting farmers to culture the species and testing the suitability of new dams and ponds for aquaculture. Both species breed easily under culture conditions. Therefore production of the fingerlings and their subsequent stocking in ponds, small water bodies and other larger water masses, including Lake Victoria, was a course of action implemented by the fish farmers to bring about their restoration.

scholarly journals Spatial Distribution, Changes, Uses and Water Quality of Small Water Bodies in Ghiduari Mouza

2013 ◽  
Vol 1 ◽  
pp. 1-14
Author(s):  
Md Al-Amin Hoque ◽  
Ummeh Saika ◽  
Khondaker Mohammod Shariful Huda
Keyword(s):  
Water Quality ◽  
Spatial Distribution ◽  
Water Bodies ◽  
Small Water ◽  
Small Water Bodies

DOI: http://dx.doi.org/10.3329/jueb.v1i0.14542Jahangirnagar University Environmental Bulletin, Vol.1, 1-14, 2012

scholarly journals Monitoring the Water Quality of Small Water Bodies Using High-Resolution Remote Sensing Data

2019 ◽  
Vol 8 (12) ◽  
pp. 553 ◽  
Author(s):  
Zehra Yigit Avdan ◽  
Gordana Kaplan ◽  
Serdar Goncu ◽  
Ugur Avdan
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
High Resolution ◽  
Quality Parameters ◽  
Water Bodies ◽  
Water Quality Parameters ◽  
Water Turbidity ◽  
Small Water ◽  
Red Edge ◽  
Small Water Bodies

Remotely sensed data can reinforce the abilities of water resources researchers and decision-makers to monitor water quality more effectively. In the past few decades, remote sensing techniques have been widely used to measure qualitative water quality parameters. However, the use of moderate resolution sensors may not meet the requirements for monitoring small water bodies. Water quality in a small dam was assessed using high-resolution satellite data from RapidEye and in situ measurements collected a few days apart. The satellite carries a five-band multispectral optical imager with a ground sampling distance of 5 m at its nadir and a swath width of 80 km. Several different algorithms were evaluated using Pearson correlation coefficients for electrical conductivity (EC), total dissolved soils (TDS), water transparency, water turbidity, depth, suspended particular matter (SPM), and chlorophyll-a. The results indicate strong correlation between the investigated parameters and RapidEye reflectance, especially in the red and red-edge portion with highest correlation between red-edge band and water turbidity (r2 = 0.92). Two of the investigated indices showed good correlation in almost all of the water quality parameters with correlation higher than 0.80. The findings of this study emphasize the use of both high-resolution remote sensing imagery and red-edge portion of the electromagnetic spectrum for monitoring several water quality parameters in small water areas.

The impact of biometric parameters of a hydromacrophyte habitat on the structure of zooplankton communities in various types of small water bodies

2009 ◽  
Vol 38 (2) ◽  
Author(s):  
Natalia Kuczyńska-Kippen ◽  
Barbara Nagengast ◽  
Tomasz Joniak
Keyword(s):  
Water Bodies ◽  
Small Water ◽  
Biometric Parameters ◽  
Zooplankton Communities ◽  
The Impact ◽  
Small Water Bodies

The impact of biometric parameters of a hydromacrophyte habitat on the structure of zooplankton communities in various types of small water bodies

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