Ecological risk assessment of pesticides in the Ngouoh Ngouoh watershed of the Foumbot Municipality in the west region of Cameroon using the PRIMET model

Ngameni, Norbert Tchamadeu; Njikam, Nacaire Ahmed; Kenko, Daniel Brice Nkontcheu; Fodouop, Eric Jordan Taguemne; Douatsop, Valorian Chanklin Tegebong

doi:10.1007/s10661-022-10679-4

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…Aquatic pollutants such as heavy metals are able to accumulate in water, sediments and fish such as Oreochromis niloticus and Coptodon rottae [5]. Moreover, agricultural pesticides have been reported to be very risky to the aquatic ecosystems, modelling moderate to high risk to water, fish, Daphnia and primary producers [24][25][26] as well as amphibians [27,28].…”

Section: Introductionmentioning

confidence: 99%

Limnology of the Ndongo stream (South-West Cameroon): wastes management, water physicochemical quality and phytoplankton species richness

Daniel Brice Nkontcheu Kenko,

Fabiola Mba Maffo,

Aimerance Donhachi Kenfack

et al. 2023

GSC Biol. Pharm. Sci.

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Freshwater ecosystems are subject to anthropogenic contaminants. This study aimed at assessing waste management stratagem by the local population and implications on water abiotic variables as well as phytoplankton species richness of the Ndongo stream, South-West Cameroon. For this purpose, 144 structured questionnaires were randomly administered to inhabitants around the stream to assess wastes management practices. Water and phytoplankton analysis was done in three selected sites. The mainstream of inhabitants (67%) dumped wastes in facilities provided by the Buea Council. The sorting of wastes before disposal was not common among respondents (72%). Recycling of wastes was done by only 37.8% of inhabitants. Half of the respondents (50.7%) claimed being ready to contribute financially for waste management while 81.2% said they were aware of the consequences of poor waste management. The main source of domestic water in the area was tap water (89.6%) and the Ndongo stream was mainly utilised for washing clothes (47.9%). Water abiotic variables that exhibited significant spatial trends included conductivity, TDS, velocity, width, depth and flow rate. There was no significant difference in the spatial distribution of temperature, pH, salinity and dissolved oxygen. The phytoplankton community was made of 36 species distributed in 37 families. Taxa such as Lynbya sp., Oscillatoria sp. and Closterium sp. were found in all the sampling sites, making them resident species of the stream. The sampling site at the lower course of the stream had the highest phytoplankton species richness. The highest algal pollution index was found in site 3at the lower course of the stream. Species richness had a positive and non-significant correlation with temperature, conductivity, TDS, salinity, velocity, depth and discharge. Water pH, dissolved oxygen and width had a negative and non-significant correlation with species richness. The local population should be educated on wastes management and its implications on the environment.

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Section: Introductionmentioning

confidence: 99%

Limnology of the Ndongo stream (South-West Cameroon): wastes management, water physicochemical quality and phytoplankton species richness

Daniel Brice Nkontcheu Kenko,

Fabiola Mba Maffo,

Aimerance Donhachi Kenfack

et al. 2023

GSC Biol. Pharm. Sci.

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Food chain-mediated variation in excretion times of microplastics: Unraveling the interactions with plasticizers

Horie,

Dorcas,

Mitsunaga

et al. 2024

Regional Studies in Marine Science

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Utilización de macroalgas para la inducción de mecanismos defensivos ante agentes fitopatógenos causantes de enfermedades foliares en hortalizas

Edwin,

Michel,

Walter

et al. 2023

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The production of vegetables worldwide has grown substantially, which has caused the demand for resources used to produce food to increase. Such is the case that nowadays, the use of pesticides for the production and management of different crops has become indispensable, causing a series of conflicts in nature, such as contamination of soil, water and air, making it a problem to be addressed. For this reason, different studies have been directed in the search for new alternatives for crop management, which involve the use of alternative products, one of them is algae extracts; these extracts have shown to have a wide variety of functions that contribute significantly to improve productivity without causing negative impacts on the environment. Among the benefits of using macroalgae extracts are the biostimulant activity, improvement of plant development, increase of water retention capacity, and activation of acquired resistance systems, among others, allowing the production of healthy food with less impact on the environment through the use of a renewable marine resource, which is currently available on the planet, becoming an essential productive alternative. Keywords: macroalgae extracts, effects, production, pathogens, elicitors, resistance systems.

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Ecological risk assessment of pesticides in the Ngouoh Ngouoh watershed of the Foumbot Municipality in the west region of Cameroon using the PRIMET model

Cited by 3 publications

References 24 publications

Limnology of the Ndongo stream (South-West Cameroon): wastes management, water physicochemical quality and phytoplankton species richness

Limnology of the Ndongo stream (South-West Cameroon): wastes management, water physicochemical quality and phytoplankton species richness

Food chain-mediated variation in excretion times of microplastics: Unraveling the interactions with plasticizers

Utilización de macroalgas para la inducción de mecanismos defensivos ante agentes fitopatógenos causantes de enfermedades foliares en hortalizas

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