Physical, Chemical, Biological properties and fish species type of Geray reservoir, -W/Gojjam Zone, Ethiopia

Mohammed, Brehan; Tewabe, Dereje; Zelalem, Wonde; Melaku, Adane

doi:10.17352/2455-8400.000012

Cited by 9 publications

(11 citation statements)

References 3 publications

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“…The results of measuring the dissolved oxygen content (DO) in the waters of Lake Batur are quite high, which ranges from 7.1-8.3 mg / L (Figure 5). Oxygen content on the surface of a water is not only produced by diffusion from the air, also caused by the photo process of phytoplankton synthesis [10][11]. The nitrate content value in the waters of Lake Batur, which reached the highest value, was found at station III, which was 0.66 and the lowest was at station I, which was 0.36 (Figure 6).…”

Section: Dissolved Oxygen (Do)mentioning

confidence: 99%

Plankton Biodiversity in The Floating Net Cage

Permana

Setiabudi

Sitepu

2022

atbes

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Lake Batur has the potential to be a fishery resource that has not been explored and even very little attention from the community and the government so that this resource can be developed optimally. The current condition of lake Batur waters tends to change either naturally or annually or changes due to community activities around the lake. This study aims to determine the feasibility of lake Batur waters as a fish farming business field for the freshwater floating net cage system. Water samples to be tested for water quality and plankton were obtained directly at Lake Batur. The results of plankton abundance at each station were received, at station I (2.070 ind/l), station II (1.477 ind/l), station III (6.975 ind/l), and station IV (2.617 ind/l), station V (2.902 ind/l). The parameters observed are water quality parameters in the form of brightness, temperature, pH, DO, Nitrates, Nitrites, and plankton abundance in Lake Batur Kintamani, Bangli. The results of research on the quality parameters at each station showed different values. The brightness parameters at 5 stations have values in the range of 246-480 cm, temperatures 26-28.3 °C, pH 7.5-8.3, DO 7.1-8.3 mg/L, Nitrates 0.36-0.66 ppm, and Nitrites 0.02-0.04. brightness.

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Section: Dissolved Oxygen (Do)mentioning

confidence: 99%

Plankton Biodiversity in The Floating Net Cage

Permana

Setiabudi

Sitepu

2022

atbes

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“…In a similar situation, human induced activities such as overfishing and continuing coastal forests clearings may be attributed to poor reproduction and development of marine life [3]. These human activities affect the marine ecosystem and a threat to the sustainability of marine life [18].…”

Section: Conductivitymentioning

confidence: 99%

Assessing the Water Quality of Cabugao Bay in Catanduanes Island, Luzon, Philippines

Brillante¹,

Masagca²

2018

WROS

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This paper assessed some physico-chemical parameters of Cabugao Bay in Catanduanes Island, Luzon, Philippines during November-December 2017 and January 2018, by evaluating seven quality parameters. Physical parameters included temperature, conductivity, and turbidity. Chemical parameters were pH, chlorine, ammonia, and dissolved oxygen. Descriptive method of research was used through fieldwork survey. Six sampling sites were considered. Results showed that the temperature of the bay is within the standard set by the Department of Environment and Natural Resources (DENR) in 2016. Conductivity and turbidity of the water provided high values indicating human activity disturbances, presence of industries such as generators, oil storage, vulcanizing, automobile repair, and other maintenance ventures. The chemical characteristics of the bay have no severe signs. However, there are indications that some chemical substances are affected by human wastes, domestic wastes, agricultural wastes, and other natural disturbances to water quality considering that the dissolved oxygen exceeded the standards. Results imply for sustainable ecosystem-based management (EBM) by addressing fisheries activities, tourism and human activities. Future studies may include other parameters: silicate, mercury, phosphate, iron (Fe), and other metallic substances; and studies on diurnal fluctuations of turbidity and determination of total solids, total organic matter, and sediment analysis throughout the bay.

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“…Knowledge of seasonal reservoir water quality is important for sustainable fish production and management decisions [ 17 ]. According to Makinde et al [ 18 ] and Tsegay and Zebib [ 13 ], seasonal difference plays a significant role in the reservoir water quality characteristics.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical Characterization of Dembi Reservoir Water for Suitability of Fish Production, Southwest Ethiopia

Chekole

Kassà

Aschalew

et al. 2022

Biochemistry Research International

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Reservoir water physicochemical characteristics provide important information about water suitability for fish production. Accordingly, the study aimed to characterize the physicochemical characteristics of Dembi reservoir water for sustainable fish production. The study was conducted in Dembi reservoir during the dry season. Water samples were collected in triplicate from selected 10 sampling sites of the reservoir water using manually prepared water sampler made from polyvinyl chloride (PVC) tube. The depth integrated sampling technique was employed to take water samples for all physicochemical characteristics analysis. From the selected 14 physicochemical characteristics, four (temperature, electrical conductivity, pH, and dissolved oxygen) were tested onsite using a multisystem HQ4d electronic meter (probe), whereas the rest 10 water quality characteristics were tested in the laboratory. The result showed that the current average depth of the dam was 5.6 ± 1.61 m. The overall mean values of the water quality characteristics at different sites of the reservoir were as follows: turbidity (26.4 ± 0.44 FTU), total hardness (22.2 ± 0.51 mgL−1), NO3 (5.4 ± 0.48 mgL−1), NO2 (0.3 ± 0.11 mgL−1), NH4 (2.1 ± 0.06 mgL−1), PO4−3 (1.7 ± 0.27 mgL−1), total alkalinity (52.5 ± 0.91 mgL−1), and BOD5 (2.7 ± 0.24 mgL−1). There was a significant difference ( p < 0.05 ) in all physicochemical characteristics among 10 sampling sites of the reservoir water. The recorded values of all physicochemical characteristics, except NO2, NH4, and PO4−3, were found within the recommended standard limit for fish production. The change in reservoir water depth and increase in nutrients shows the presence of sediment siltation and nutrient enrichment. Therefore, proper watershed management practices and waste management should be carried out for sustainable water quality maintenance and fish production.

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Physical, Chemical, Biological properties and fish species type of Geray reservoir, -W/Gojjam Zone, Ethiopia

Cited by 9 publications

References 3 publications

Plankton Biodiversity in The Floating Net Cage

Plankton Biodiversity in The Floating Net Cage

Assessing the Water Quality of Cabugao Bay in Catanduanes Island, Luzon, Philippines

Physicochemical Characterization of Dembi Reservoir Water for Suitability of Fish Production, Southwest Ethiopia

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