Impact of traffic emissions on air quality in Cabo Verde

Freire, Sandra M.S.C.; Relvas, Hélder; Lopes, Myriam

doi:10.1007/s10661-020-08690-8

Cited by 7 publications

(4 citation statements)

References 32 publications

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“…Since many cases occur in immunocompromised hosts, it is also likely that large numbers of cases escape detection, particularly in developing countries of Africa and Southeast Asia, where HIV/AIDS remains at epidemic levels [ 1 ]. Cabo Verde belongs to the Macaronesia ecoregion, along with the Azores, the Canary Islands, Madeira, and the Savage Isles [ 10 ], but this archipelago is geographically part of Africa. FLAs are pathogenic protozoa which do not require a host organism to survive [ 5 ].…”

Section: Discussionmentioning

confidence: 99%

“…Cape Verde is an Atlantic archipelago country, located about 600 to 850 kilometres (320 to 460 nautical miles) west of Cap-Vert, situated at the westernmost point of continental Africa [ 9 ]. It consists of nine volcanic islands with a combined land area of about 4033 square kilometres (1557 sq mi), and forms part of the Macaronesia ecoregion, along with the Azores, the Canary Islands, Madeira, and the Savage Isles [ 10 ]. According to the National Institute of Statistics of Cape Verde (INE 2016), Santiago Island recorded the second highest population density of Cape Verde (301 inhabitants/Km 2 ).…”

Section: Introductionmentioning

confidence: 99%

“…According to the National Institute of Statistics of Cape Verde (INE 2016), Santiago Island recorded the second highest population density of Cape Verde (301 inhabitants/Km 2 ). The geographical location of Cape Verde archipelago is an arid and semi-arid, hot and dry climate, with scarce rainfall and an average annual temperature of 25 °C [ 10 ]. Cape Verde has few natural resources and only five of the nine main islands (Santiago, Santo Antão, São Nicolau, Fogo, and Brava) normally support significant agricultural production [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

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Free-Living Amoebae in Soil Samples from Santiago Island, Cape Verde

et al. 2021

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Free-Living Amoebae (FLA) are widely distributed protozoa, which contain some groups considered as pathogenic microorganisms. These members are able to produce several opportunistic diseases including epithelial disorders, such as keratitis and fatal encephalitis. Even though they have been reported in numerous sources, such as soils, dust and water, there is no legislation related to the presence of these protozoa in soil-related environments worldwide. Therefore, there are no established prevention or disinfection protocols to advise the population regarding FLA infections or eliminate these microorganisms from human-related environments to date. Acanthamoeba spp. are the most common FLA isolated in soil samples, which is also the most common genera found in clinical cases. Thus, the aim of the present study was to evaluate the presence of potentially pathogenic FLA in human-related soil samples of Santiago Island, Cabo Verde. A total of 26 soil samples were seeded in non-nutrient agar plates (2%), incubated at 26 °C, and monitored daily to evaluate the presence of FLA. DNA was extracted from those plates on which there was suspected FLA growth, and PCR amplification of the 18S rRNA gene was carried out. A total of 17 from the 26 analysed samples were positive for FLA, where Acanthamoeba is the most abundant isolated genus (14/17; 82,4%), with the T4 genotype being the most common (13/14; 92,9%), followed by the T5 genotype, A. lenticulata (1/14; 7,1%). Moreover, Vermamoeba vermiformis, Stenamoeba dejonckheerei and Vannella pentlandi were isolated in three other samples. To the best of our knowledge, this is the first report of FLA presence in Cape Verde and the first report of V. vermiformis in beach sand worldwide.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Free-Living Amoebae in Soil Samples from Santiago Island, Cape Verde

et al. 2021

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“…Man-made air pollution sources are pollution sources formed by human production and living activities, of which vehicle exhaust and industrial emissions are the main direct driving factors of air pollution [42], and vehicle ownership and industrial NOx emissions were selected as the scalar response variables. According to earlier research [43,44], the impact of PM 10 on air quality is associated with industry, and the impact of NO 2 on air quality is associated with vehicle exhaust emissions. Therefore, PM 10 and NO 2 in heavily polluted areas were selected as the covariates.…”

Section: Response Relationship Between Anthropogenic Activities and A...mentioning

confidence: 99%

Air Quality Research Based on B-Spline Functional Linear Model: A Case Study of Fujian Province, China

Xu,

You,

Wen

et al. 2023

Applied Sciences

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It is generally accepted that air quality is closely related to human health. In this study, to investigate the dynamic characteristics of air quality and explore the driving factors of air pollution, the Air Quality Index (AQI) and concentration data of six air pollutants (CO, NO2, O3, PM2.5, PM10, and SO2) were fitted to functional curves using the B-spline basis function. Compared with discrete data, functional data can better express the dynamic characteristics of data and reduce information loss. Additionally, functional clustering based on the principal component coefficient was established to analyze the spatiotemporal dynamic characteristics of air quality, and a functional linear model was established to analyze the relationship between pollutants and anthropogenic factors. The results showed that air pollutants in Fujian Province were found to have certain temporal and spatial heterogeneity, among which the seasonal characteristics of NO2 and O3 (high in summer, low in winter) were opposite to those of the other pollutants considered. The spatial distribution of air pollution was low (high) pollution in inland (coastal) areas, and the primary air pollutants in Fujian Province were PM10 and PM2.5. The functional linear model indicated that anthropogenic factors (e.g., vehicle numbers and emissions of industrial NOX emissions) were found to have a notable impact on air pollutants. The findings of this study could act as a reference in support of air pollution control.

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