Wetlands Exploitation along the Bafoussam – Bamenda Road Axis of the Western Highlands of Cameroon

Kometa, Sunday Shende

doi:10.1080/09709274.2013.11906550

Cited by 13 publications

(10 citation statements)

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“…In fact, along the volcanic chain of Cameroon (VCC), there exist a considerable number of wetlands in valley bottoms of mountain massifs that are maintained by high annual precipitation and favourable surface hydrology [ 19 ]. Of further note, these volcanic mountains possess highly fertile and productive soils resulting in a concentration of human populations [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Bionomics and vectorial role of anophelines in wetlands along the volcanic chain of Cameroon

et al. 2018

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BackgroundThe epidemiological profiles of vector-borne diseases, such as malaria, are strongly associated with landscape components. The reduction of malaria burden in endemic and epidemic regions mainly depends on knowledge of the malaria-transmitting mosquito species, populations and behavioural characteristics, as well as malaria exposure risks. This work aimed at carrying out a holistic study in order to characterise Anopheles species in relation to human malaria in seven wetlands along the lower section of the volcanic chain of Cameroon.ResultsEight malaria vectors: Anopheles arabiensis, An. coluzzii, An. funestus (s.s.), An. gambiae, An. hancocki, An. melas, An. nili and An. ziemanni, were found biting humans. Anopheles gambiae was widespread; however, it played a secondary role in the Ndop plain where An. ziemmani was the primary vector species (79.2%). Anophelines were more exophagic (73.6%) than endophagic (26.4%), showing a marked nocturnal activity (22:00–4:00 h) for An. coluzzii and An. gambiae while An. funestus (s.s.) was mostly caught between 1:00 and 6:00 h and An. ziemanni having an early evening biting behaviour (18:00-00:00 h). Female Anopheles were mostly observed to have relative high parity rates (≥ 70%), with the exception of the Meanja site where species parity varies from 46 to 55%. Overall, the transmission level was low with entomological inoculation rates estimated to 0.7 infected bites per person per month (ib/p/mth) in Tiko and Ndop, 1.4 ib/p/mth in Mamfe and 2.24 ib/p/mth in Santchou.ConclusionsThe present study represents detailed Anopheles vector characterisation from an understudied area along the volcanic chain of Cameroon with endemic malaria transmission. The significant differences in bionomics and Anopheles species distribution within the studied wetlands, highlights the importance of providing baseline data and an opportunity to assess the outcome of ongoing malaria control interventions in the country.Electronic supplementary materialThe online version of this article (10.1186/s13071-018-3041-z) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Bionomics and vectorial role of anophelines in wetlands along the volcanic chain of Cameroon

et al. 2018

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“…Available phosphorus concentrations lower than 16 mg/kg in soils are considered low to ensure adequate phosphorus supply to most plants (Landon, 1991). The availability of phosphorus might also be limited due to the nature of the parent material that is generally granitic (Kometa, 2013), and high phosphorus sorption (Yerima and Van Ranst, 2005a). Available phosphorus is low indicating that the amount of phosphorus in farms in Ako is very low.…”

Section: Soil Nutrients Status Under Agroforestry Systems In Akomentioning

confidence: 99%

Farmers perception of soil and watershed degradation and the assessment of soil nutrients status under agroforestry systems in the Western Highlands of Cameroon: Case of Ako sub division

Munjeb¹,

Kfuban²,

Louise³

2018

J. Soil Sci. Environ. Manage.

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The objective of this study was to assess farmers' perception regarding the activities which degrade the soil and watershed and to analyze soil nutrients status under different agroforestry systems. The aim of the study was to identify and promote locally-known agroforestry-based practices for soil and watershed conservation in the savannah highland area of Cameroon. Semi-structured questionnaires were administered to 120 farmers purposively selected from 10 villages in the Ako sub division characterized by favorable environmental conditions for agricultural production and the presence of agroforestry systems. The 10 villages were classified following a stratified sampling based on the degree of degradation of the soil and the watershed. Ako sub division was chosen because it is a priority zone for agricultural production and some of the practices are unsustainable leading to soil and watershed degradation. Soil samples were collected from each of the agroforestry systems found in the villages sampled and were analyze for soil nutrients status. The soil nutrients that were analyzed are: Organic matter by the wet oxidation method; exchangeable cations; cation exchange capacity; total nitrogen by Kjedahl method; available phosphorus by Bray II method and carbon to nitrogen ratio. The results showed that farmers perceived poor farming methods (33.10%) and deforestation (29.58%) as the main activities degrading the soil and the watershed. The standard values developed were used to compare the level of soil nutrients in each agroforestry system. The results of the soil analysis under each agroforestry system in Ako indicated that, soils were highly deficient in phosphorus in all the systems. The values were very low in all the systems ranging from 0.21 in palm agroforestry system to 0.46 in cocoa agroforestry system. Based on the level of organic matter and cation exchange capacity observed in the different farms, the agroforestry systems that should be promoted are: Coffee agroforestry systems, and cocoa agroforestry systems.

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“…Available P concentrations lower than 16 mg/kg in soils are considered low to ensure adequate phosphate supply to most plants (Landon, 1991). The availability of phosphorus might also be limited due to the nature of the parent material that is generally granitic (Kometa, 2013), high phosphorus sorption (Coulombe et al, 1996;Tening et al, 2013), and low pH values observed in these soils.…”

Section: Physico-chemical Properties Of Surface Soil Samples Collectementioning

confidence: 99%

“…Some preliminary studies revealing these constraints have been carried out on the soils of this municipality (Kometa, 2013;Asongwe et al, 2014). However, a comprehensive work on the soils of this sub-region is yet to be done.…”

Section: Introductionmentioning

confidence: 99%

Spatial variability of selected physico-chemical properties of soils under vegetable cultivation in urban and peri-urban wetland gardens of Bamenda municipality, Cameroon

Asongwe¹,

Yerima²,

Tening³

2016

Afr. J. Agric. Res.

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Urban wetlands in Bamenda municipality play a vital role in vegetable production, but variability in the physico-chemical properties of soils is of dire concern. Twenty-one surface soil samples were analyzed for their physico-chemical properties using standard methods to examine the fertility status of the soils, evaluate their variability and constraints, and provide adequate data for planning sustainable land management. The coefficient of variation was used as an index of soil variability, while sources of soil variation and subsequent grouping into management units were identified using linear correlation, linear regression and principal component analyses. The results indicated that the soil pH was slightly variable while organic matter varied considerably. Correlation coefficients between some of the soil parameters were highly significant (p<0.01) ranging from-0.950 to 0.999, but most of them had correlation values less than 0.500. Regressions depicted multiplicity of sources of different variables. Six principal components: base status, organic matter, weathering, acidity, sodium (Na) dispersal, and neo-synthesis, grouped the soils in management units and explained 96.24% of the variations observed. For a proper management of the soils, individual management units should be established for the municipality.

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Wetlands Exploitation along the Bafoussam – Bamenda Road Axis of the Western Highlands of Cameroon

Cited by 13 publications

References 1 publication

Bionomics and vectorial role of anophelines in wetlands along the volcanic chain of Cameroon

Bionomics and vectorial role of anophelines in wetlands along the volcanic chain of Cameroon

Farmers perception of soil and watershed degradation and the assessment of soil nutrients status under agroforestry systems in the Western Highlands of Cameroon: Case of Ako sub division

Spatial variability of selected physico-chemical properties of soils under vegetable cultivation in urban and peri-urban wetland gardens of Bamenda municipality, Cameroon

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