Particle size distribution of airborne microorganisms and pathogens during an intense african dust event in the eastern mediterranean microbial quality of the aerosols over the eastern. Like most pathogens, the microorganisms that cause bacterial meningitis have mastered many methods of immune evasion invasion from the bloodstream to the central nervous follows pilus-mediated adhesion to the endothelium. Documentary: african dust, coral reefs and human health hundreds of millions of tons of mineral dust are transported thousands of miles through the atmosphere from the sahara and sahel of africa to the caribbean and the americas every year. The aerosolization of bacteria in dust contributes heavily to the transport of bacterial pathogens a well-known case of disease outbreak by bioaerosol was the meningococcal meningitis outbreak in sub-saharan africa, which was linked to dust storms during dry seasons.
Iron, a critical element for living organisms, can be hard to hard to come by in open marine waters-except each summer, when atmospherically transported dust from north africa's sahara desert provides pulses of biologically important nutrients, including iron, to the tropical marine waters of the caribbean and southeastern us. Dust storms like the one that plagued sydney are blowing bacteria to all corners of the globe, with viruses that will attack the human body yet these scourges can also help mitigate climate change. Keywords: african dust, bacterial community composition, microbial transport, particle size distribution, pathogens in the last decade, the increase of desertification has resulted in a concomitant intensification of atmospheric dust loadings ( moulin and chiapello 2006 .
African dust and microbial pathogens essay example 1681 words 7 pages the atmosphere is a relatively unexplored and unthought of environment for a microbial habitat. Figure 3 the eight brightly colored bacteria streaked on this petri dish of agar were isolated from a dust event in africa while many bacteria are colorless. Potentially hazardous bacteria and fungi catch a free ride across the atlantic, courtesy of north african dust plumes government researchers who made the discovery believe the stowaway microbes. That includes many different types of bacteria, fungi, and possibly viruses before, scientists thought that exposure to the sun's ultraviolet light killed the microbes in dust clouds but griffin says the clouds may be thick enough to filter out much of the light. Coincidentally (from 1970 to the present), transatlantic dust transport from north africa increased dramatically, with peak dust years occurring in 1973, 1983, and 1987, according to a group of scientists.
A study found that iron from the dust clouds is deposited in the gulf of mexico and plant-like bacteria use the iron to set the stage for the toxic algae blooms. The dust in our homes contains an average of 9,000 different types of fungi and bacteria, a study suggests. In the african dust corridor over the mid-atlantic ridge, two of the human pathogens identified in the mali dust study (83, 117), kocuria rosea and gordonia terrae, were also recovered when elevated concentrations of african dust were present in the atmosphere. There is also evidence, according to nasa, that dust from africa can lead to large toxic algae blooms in the gulf of mexico a nasa funded study found that iron from the dust clouds is deposited in the gulf of mexico and plant-like bacteria use the iron to set the stage for the toxic algae blooms.
African dust, coral reefs and human health presents how recent changes in the composition and quantities of african dust transported to the caribbean and the americas might provide clues to why caribbean coral reef ecosystems are deteriorating and human health may be impacted. Potential contaminants and pathogens in air, dusts, and soils a variety of human-health problems have been linked to exposures to dusts, other atmospheric aerosols, and soils. Interhemispheric transport of viable fungi and bacteria from africa to the caribbean with soil dust joseph m prospero1,, edmund blades2, george mathison3 & raana naidu4,5 1cooperative institute for marine and atmospheric studies, rosenstiel school of marine and atmospheric.
Microbial pathogens traditionally, the detection and enumer- particle size distribution of airborne microorganisms and pathogens during an intense african dust event in the eastern mediterranean. Dust (and biology) in the wind several mechanisms contribute to the microbial load of african desert dust, in addition to the ∼10 6 bacteria g −1 of soil estimated to occur naturally : as they move across the continent, local winds lift large quantities of arid soil. The bacteria blooms, he said, are further evidence that african dust is something to concern marine scientists exactly how worried they should be is still unclear bacteria have always been. Dust is transported from africa, other countries with large deserts and contains diverse microbial communities (bacteria and fungi) often containing pathogens data presented within the current and past century has shown that microbes are capable of withstanding environments exposing them to desiccation, uv, and other physical stresses, making.