News Update on Aerobiology Research: May – 2019

Aerobiology and the global transport of desert dust

Desert winds aerosolize many billion plenty of soil-derived dirt annually, together with targeted seasonal pulses from Africa and Asia. These water and continental dirt events inject an outsized pulse of microorganisms and spore into the atmosphere and will so have a task in transporting pathogens or increasing the biogeographic vary of some organisms by facilitating long-distance diffusion events. As we tend to discuss here, whether or not such diffusion events area unit occurring is just currently setting out to be investigated. large dirt events produce Associate in Nursing part bridge over land and ocean, and therefore the microbiota contained inside them might impact downwind ecosystems. Such diffusion is of interest thanks to the potential health effects of allergens and pathogens which may be carried with the dirt. [1]

Introduction to Aerobiology

This chapter introduces the study of mobile microorganisms and their by-products, discusses indoor and evolution outside sources of mobile microorganisms that have an effect on human health and therefore the surroundings, reviews the association of bioaerosols and indoor environmental quality, and shortly presents background info on mobile microorganisms as potential terrorism agents. The transport and supreme subsiding of a bioaerosol are suffering from its physical properties and by the environmental conditions that it encounters whereas mobile. the foremost vital physical characteristics are the scale, density, and form of the droplets or particles, whereas the foremost important environmental conditions are the temperature, ratio, and magnitude of air currents. varied evolution activities function the origin of bioaerosols in outside environments, particularly agricultural practices and waste material treatment processes. In summary, interest within the populations of mobile microorganisms in agricultural and industrial settings, health care facilities, residences, offices, and room environments has exaggerated in recent years. The threat of purposeful unharness of microorganisms as terrorism agents has prompted revived interest in aerobiology, and analysis activity during this space of environmental biological science has chop-chop distended. [2]

Studies on Dental Aerobiology: IV. Bacterial Contamination of Water Delivered by Dental Units

Water sprays from a dental handpiece and air-water syringe were evaluated for microorganism content. microorganism concentrations that so much exceeded limits permissible for public water provides were discovered. an easy methodology for reducing microorganism contamination in water lines for dental instrumentality is bestowed. [3]

Aerobiology on Commercial Air Routes

WHILE i used to be a traveller from New Zealand to the uk in Gregorian calendar month 1947, i used to be able to expose magnifier slides on a stick control out from industrial flying boats, and that i cornered as several as 143 spore grains and 273 plant life spores on 7•5 sq. cm. of adhesive surface exposed for 5 minutes at one hundred forty knots (about one hundred sixty m.p.h.). Proctor1 outlines variety of sophisticated constructions for exposure of slides from aeroplanes; however the easy technique I actually have used makes it potential for biologists move as normal passengers on industrial craft to contribute to our information of aerobiology. the strategy is because of a suggestion by Mr. E. A. Madden of the Department of Scientific and Industrial analysis, New Zealand, to run a number one wire before the slides to interrupt up the pressure cone, and to contour the stick behind so as to forestall turbulence from increasing its apparent breadth. At the lower speed of their craft, this might not are necessary for the one slides of Polunin et al.2; and of Stakman et al.3; however the larger surface of Stakman‘s multi-slide lure might have needed some such provision, and thus its poorer performance. My exposures were created through the astro-hatch of the Empire-class hydroplane Aotearoa, over the Tasman Sea, and thru the window of the steward‘s larder on the Hythe hydroplane, Hobart, thereafter. [4]

Microbiological Properties and Population Dynamics of Atmosphere in Mesotidal Estuarine of Iko River, Akwa Ibom State, Nigeria

The microbiological properties and population dynamics of atmosphere in mesotidal body of water of Iko stream were investigated victimization commonplace microbiological and analytical procedures. The results unconcealed that the densities of culturable microbes within the body of water were influenced by recurrent event regimes. Their abundance varied between each tides similarly as locations. Proportionately a lot of fungous isolates were found within the body of water air. There was a major correlation (r = zero.717, p < 0.05) between the whole heterotrophic microorganism within the atmosphere and wind speed, and between the fungi within the atmosphere and wind speed (r = zero.799) throughout high water, indicating that increase in wind speed resulted in a very corresponding impact in heterotrophic microorganism and fungous counts throughout high water. A comparison of the relation between atmospherical temperature and microorganism load showed very little or no correlation (r =0.30). The results of the air quality attributes of Iko body of water throughout low water and high water showed that the standard of air within the body of water setting was affected. The air quality within the body of water setting was comparatively “clean” and wholesome as most criteria volatilised pollutants (HCN, NO2, SO2) except CO and SPM were below detectable limits and inside the FMENV and UN agency acceptable limits. However, the recorded levels of CO in some components of the fishing settlement were on top of Federal Ministry of setting (FMEnv) limits of ten.0 – 20.0 ppm for daily average of eight hourly values in Nigeria. the amount of atmospherical contaminants varied between low and high tides. The 2.0 ppm level of SPM recorded throughout high water is over the FMEnv limits of zero.25ppm and is dangerous. The study has unconcealed vital emission of CO from the fish smoking activity that is common within the settlements. Geographic system (GIS) models of microorganism communities unconcealed marked variation that ranged between recurrent event influences and microhabitats. The model unconcealed high concentrations of microorganisms within the north-west zone throughout each tides, whereas fungi were extremely targeted within the north-east zone throughout high water. High species richness was determined, however with very little or no recurrent event influences and isolates enclosed far-famed infective species. The findings unconcealed that recurrent event bars and flats in shallow mesotidal body of water square measure subject to the action of recurrent event currents and waves. These complicated events make to giant variations in microorganism communities in body of water microhabitats which can be controlled for effective environmental watching. [5]


[1] Kellogg, C.A. and Griffin, D.W., 2006. Aerobiology and the global transport of desert dust. Trends in ecology & evolution, 21(11), pp.638-644. (Web Link)

[2] Stetzenbach, L.D., 2007. Introduction to aerobiology. In Manual of Environmental Microbiology, Third Edition (pp. 925-938). American Society of Microbiology. (Web Link)

[3] Abel, L.C., Miller, R.L., Micik, R.E. and Ryge, G., 1971. Studies on dental aerobiology: IV. Bacterial contamination of water delivered by dental units. Journal of dental research, 50(6), pp.1567-1569. (Web Link)

[4] Aerobiology on Commercial Air Routes

  1. V. NEWMAN

Naturevolume 161, pages275–276 (1948) (Web Link)

[5] I. Udosen, C., P. Essien, J., I. Umana, S., E. Ekong, U., & J. Nkanang, A. (2018). Microbiological Properties and Population Dynamics of Atmosphere in Mesotidal Estuarine of Iko River, Akwa Ibom State, Nigeria. Journal of Advances in Biology & Biotechnology, 17(4), 1-19. (Web Link)

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