Effect of watershed land use on tributaries’ water quality in the east African Highland

Woldeab, Bizuneh; Ambelu, Argaw; Mereta, Seid Tiku; Beyene, Abebe

doi:10.1007/s10661-018-7176-3

Cited by 18 publications

(10 citation statements)

References 22 publications

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“…This was observed in the months of April to July. These observations are in consistent with previous studies done in Gilgel Gibe River Basin where high turbidity, TSSC and sediment flux occurred mixed farming areas [34]. The post harvesting season showed turbidity, TSSC and sediment loads lower than pre planting season.…”

Section: Discussionsupporting

confidence: 93%

Influence of Tea Plantations, Forest and Mixed Farming on Stream Flow and Sediment Loads, Case of Sondu Miriu River Basin, Kenya

Koech¹,

Kitheka²,

Otieno³

2022

OJMH

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Section: Discussionsupporting

confidence: 93%

Influence of Tea Plantations, Forest and Mixed Farming on Stream Flow and Sediment Loads, Case of Sondu Miriu River Basin, Kenya

Koech¹,

Kitheka²,

Otieno³

2022

OJMH

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“…The turbidity was high during CDWS as compared to HDS. The increased turbidity during the CDWS was attributed to increased wind erosion, sand mining, and farming activities (Razali et al 2018;Woldeab et al 2019;Nkwanda et al 2021). Studies conducted by Jamu et al (2011) and Palamuleni et al (2011) revealed that there had been a significant land use change since the 1980s in the west part of Lake Malombe catchment due to increased agricultural activities, and these changes are linked to many environmental alterations (Simmons et al 2008) such as increased gullying of the catchment, culminating in significant sedimentation of the lake littoral plain.…”

Section: Resultsmentioning

confidence: 99%

Spatial distribution of zooplankton in response to ecological dynamics in tropical shallow lake: insight from Lake Malombe, Malawi

Makwinja

Mengistou

Kaunda

et al. 2021

Journal of Freshwater Ecology

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This study assessed zooplankton density and Chl-a amount to understand their spatial and seasonal variation in Lake Malombe. Samples were collected for analysis during the hot, dry season (HDS) and cool, dry, windy season (CDWS). The zooplankton identified were Tropodiaptomus cunningtoni (TC), Mesocyclops aequatorialis aequatorialis (MAA), Thermocyclops neglectus (TN), Bosmina longirostris (BL), Diaphanosoma spp. (DS), and Nauplii. These zooplankton groups belong to copepods, Cyclopidae, Cladocera, Ctenopod, and Rotifers. Chl-a exhibited a substantial seasonal variation, with the highest concentration observed in HDS and lowest in CDWS. Zooplankton such as T. cunningtoni, M. aeq. aequatorialis, T. neglectus, B. longirostris, Diaphanosoma spp, Nauplii, and Rotifer increased during the HDS. The water temperatures (WT), pH, Dissolved Oxygen (DO), and Chl-a positively correlated with all zooplankton densities. Sodium (Na þ ) and Potassium (K þ ) ions positively correlated with TC, MAA, DS, Nauplii, and Rotifers. Chloride ion (Cl -) positively correlated with DS, Rotifers, while Carbonate ion (CO 3 2-) positively correlated with TC. Bicarbonate (HCO 3 -) correlated positively with DS and Rotifers, while TDS correlated negatively with BL, Nauplii, and Rotifers. Nitrite affected zooplankton density negatively, while SRP had a positive effect. The study revealed that physical-chemical variables, some significant ions, and Chl-a are the most critical factors influencing the spatial and seasonal variation of zooplankton density in the lake. These findings demonstrate the interaction between physical-chemical variables, Chl-a, and zooplankton and highlight the significance of ecological understanding of the complex dynamics of the food web system in shallow tropical lakes such as Lake Malombe-under the changing climate.

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“…Lack of appropriate conservation practice in watershed management may cause sedimentation or siltation of the dam. Gilgel Gibe I reservoir water quality strongly associated with land use changes and has the highest pollution load (Woldeab et al 2019). Therefore, the aim of the study was to assess farmers' conservation practices on sub-watershed management across the Gilgel Gibe catchment as a means of determining necessary interventions for addressing environmental threats.…”

Section: Introductionmentioning

confidence: 99%

Assessment of farmers’ socioeconomic and conservation practice towards watershed management in the South West of Ethiopia

Woldeab

Ambelu

Beyene

et al. 2022

Preprint

Self Cite

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Background Watershed resource conservation is important for the wellbeing of the environment and communities. Understanding farmers’ socioeconomics and watershed conservation practices help in determining necessary interventions to address environmental threats. The study area is important at regional and national level due to the hydroelectric dam of the mega power project. This study deals with the farmers’ socio economic and conservation practices of Gilgel Gibe watershed. The study targeted 305 households in 4 districts of Jimma Zone surrounding the Gilgel Gibe Reservoir I. Semi-structured questionnaire was administered via interviews and focus group discussions led by trained survey interviewers. Result The findings of the study indicated that majority of farmers in the watershed have adequate knowledge, positive attitude and bad practice towards watershed conservation. To achieve better means of subsistence and improve their living condition farmers are forced to put stress on natural resource, degrading watershed and increase pollution loads that affect water quality of tributaries and reservoir. Conclusion Based on the present scenario, we forwarded stakeholders to establish team from the elders, officials at woreda and zonal level to initiate commitment, coordinate conservation activity and promote households’ income generating activities at homestead level like conservation agriculture.

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Effect of watershed land use on tributaries’ water quality in the east African Highland

Cited by 18 publications

References 22 publications

Influence of Tea Plantations, Forest and Mixed Farming on Stream Flow and Sediment Loads, Case of Sondu Miriu River Basin, Kenya

Influence of Tea Plantations, Forest and Mixed Farming on Stream Flow and Sediment Loads, Case of Sondu Miriu River Basin, Kenya

Spatial distribution of zooplankton in response to ecological dynamics in tropical shallow lake: insight from Lake Malombe, Malawi

Assessment of farmers’ socioeconomic and conservation practice towards watershed management in the South West of Ethiopia

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