Assessment of Chemical Pollution With Routine Pesticides Using PRIMET, a Pesticide Risk Model in the Benoe Stream in the South-West Region of Cameroon

Nkontcheu, Daniel Brice Kenko; Fai, Patricia Bi Asanga; Taboue, Geraud C. Tasse; Tchamadeu, Norbert Ngameni; Ngealekeleoh, Francis; Mbida, Mpoame

doi:10.19044/esj.2017.v13n30p153

Cited by 7 publications

(2 citation statements)

References 18 publications

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“…In addition, Nicolai and Ansart (2017) underlined that human-driven habitat loss through intensified urbanization, agriculture, and forestry dramatically increased the impact of climate change and endangers the species living in restricted habitat and with low dispersal such as land snails. Finally, excessive and misuse of pesticides result in environment contamination causing biodiversity loss particularly land snails (Nkontcheu et al, 2017;Baroudi et al, 2020).…”

Section: Perceptions Of Local Population On the Causes Of Land Snail's Biodiversity Reduction And On Their Conservation Status In Lamto Rmentioning

confidence: 99%

Local Population’s Knowledge And Perceptions On The Biodiversity And Conservation Status Of Land Snails In The Region Of Lamto Reserve At The Centre Of Ivory Coast

Pokou

Piba

Koné

et al. 2021

ESJ

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Local population can play an important role in the sustainable management of biodiversity in protected area. This paper focuses on investigating local population’s knowledge and perceptions on land snail’s biodiversity and conservation status, by (1) testing their ability to recognize different species of land snails, (2) examining the factors involved in the reduction of land snail’s biodiversity, and (3) collecting their points of view on land snail’s biodiversity conservation status. Two hundred and sixty (260) people from four villages around Lamto Reserve were interviewed using structured questionnaire with six land snails supporting photos (three macro snails and three micro snails). The results showed that all the respondents had at least once seen the macro snails selected. More than 78% were able to recognize them without the pictures and more than 88% with the pictures. More than 85% of respondents had at least once seen the selected micro snails. Only less than 25% were able to recognize them with the pictures and less than 8% without the pictures. The considered socio-demographic variables were significantly associated with knowledge of the selected land snails. Climate change and human activities (pesticides overuse, edible land snail’s consumption and selling and forest fires) have been mentioned by local population as the fundamental causes involved in land snail’s biodiversity reduction in this region. The number of respondents with positive attitude (62.91%) towards land snail’s biodiversity conservation in Lamto Reserve was significantly higher than the one with negative attitude (37.69%) (P<0.001). Lamto Reserve management staff must increase the consciousness raising campaign in rural communities close to the Reserve in order to reduce the number of people who do not support biodiversity conservation.

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Section: Perceptions Of Local Population On the Causes Of Land Snail's Biodiversity Reduction And On Their Conservation Status In Lamto Rmentioning

confidence: 99%

Local Population’s Knowledge And Perceptions On The Biodiversity And Conservation Status Of Land Snails In The Region Of Lamto Reserve At The Centre Of Ivory Coast

Pokou

Piba

Koné

et al. 2021

ESJ

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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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Incorporating a weight‐of‐evidence approach into a tiered assessment for chemicals management, with emphasis on program development and applications in developing countries and emerging economies

Menzie,

Guiney,

Belanger

et al. 2024

Integr Envir Assess & Manag

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A flexible approach is described for incorporating a weight‐of‐evidence (WoE) methodology into a tiered ecological risk assessment (ERA)/management framework for chemicals. The approach is oriented toward informing decisions about chemicals. Communication is regarded as a critical component of the risk assessment process. The paper resulted from insights gained from seven ERA workshops held by SETAC (Society of Environmental Toxicology and Chemistry, www.setac.org) in the Asia‐Pacific, African, and Latin American regions. Formal ERA methods are not fully developed or applied in many of these countries and assessments often begin with tables of risk values and test methods from countries where ERA is already implemented. While appropriate and sometimes necessary, workshop participants had questions about the reliability and relevance of using this information for regionally specific ecosystems with different receptors, fate processes, and exposure characteristics. The idea that an assessment of reliability and relevance of available information and the need for additional information was necessary at an early stage of the assessment process was considered. The judgment of reliability and relevance is central to WoE approaches along with the identification of information needs and the integration of such information. The need to engage in WoE considerations early and throughout the assessment process indicates that a tiered approach is appropriate for unifying the evaluation process in a consistent way from early screening‐level steps to later more involved evaluations. The approach outlined in this article is complementary to WoE guidance developed by the Organization for Economic Co‐operation and Development and many national guidance documents. To link assessments of risk to management decisions, emphasis is given to communications at each tier between the risk assessor (technical side) and the decision‐makers (policy and regulatory side). Tools and information sources are suggested for each tier and suggestions are meant to be illustrative and not prescriptive. Integr Environ Assess Manag 2024;00:1–15. © 2024 SETAC

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Assessment of Chemical Pollution With Routine Pesticides Using PRIMET, a Pesticide Risk Model in the Benoe Stream in the South-West Region of Cameroon

Cited by 7 publications

References 18 publications

Local Population’s Knowledge And Perceptions On The Biodiversity And Conservation Status Of Land Snails In The Region Of Lamto Reserve At The Centre Of Ivory Coast

Local Population’s Knowledge And Perceptions On The Biodiversity And Conservation Status Of Land Snails In The Region Of Lamto Reserve At The Centre Of Ivory Coast

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

Incorporating a weight‐of‐evidence approach into a tiered assessment for chemicals management, with emphasis on program development and applications in developing countries and emerging economies

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