Spore Concentrations in the Atmosphere at Ahmadi, a New Town in Kuwait

Davies, R. R.

doi:10.1099/00221287-55-3-425

Cited by 40 publications

(22 citation statements)

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“…The only other formal attempt to record pollen quantitatively in the region was reported in 1969 from Kuwait. 8 Davies showed Chenopodiaceae were by far the most common pollen, contributing 66% of total count, while grasses reached only 3% of total pollen, only occasionally reaching levels of 10 grains per cubic meter, a contrast from the picture in Riyadh in 1987. He also identified Artemisia and Prosopis in low numbers.…”

Section: Discussionmentioning

confidence: 83%

A 12-Month Aerobiological Survey of Pollen in Riyadh

et al. 1989

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A 12-month aerobiological survey of pollen in Riyadh showed a double peak of pollen grains, a spring peak in March, April, and May and an autumn peak in October. A large number of genera were recorded, including both indigenous and imported varieties. Dust clouds at times obscured or damaged pollen grains, hindering recognition. Peak pollen counts per cubic meter in 1 hour showed that 13 genera on at least one occasion and most of these on many occasions exceeded the clinically significant levels of 10 to 20 grains per cubic meter. Genera in order from the most to least common were Chenopodiaceae (which includes the weed fat hen), grasses, plantain, Artemisia, and Ambrosia. Grasses and Chenopodiaceae released pollen 11 to 12 months of the year. A seasonal pollen calendar is presented as a guide to likely allergens at different times of the year. While allergy skin-testing is widespread as a diagnostic tool in the Kingdom, an accurate chart of the seasonal appearance of pollen and fungi has not been reported for the different regions of Saudi Arabia.1 To rectify this deficiency, a three-city aerobiological survey has been set up in Riyadh, Jeddah, and Al-Khobar.This paper presents the results of a full year's survey of pollen in the Riyadh atmosphere delineating the various botanical families likely to contribute to inhalant allergies in the Riyadh region. Aero-allergological information on fungal spores has been published as a separate communication.

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Section: Discussionmentioning

confidence: 83%

A 12-Month Aerobiological Survey of Pollen in Riyadh

et al. 1989

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“…Subsequently, an extract of the December. 4 The current data for airborne Prosopis presented in Figure 2 for Gizan indicate even a higher concentration level (90 grains m -3 ), with peak in April. In India, a one-year sampling in different inhabited areas in 4 zones using volumetric samplers revealed Prosopis pollen as an important contributor, especially at lower heights.…”

Section: Discussionmentioning

confidence: 99%

“…Allergenicity to Prosopis juliflora pollen antigen has been reported from a few countries, including the United States, 1,2,3 Kuwait, 4 India 5,6,7 and South Africa. 8 Several species of the drought-resistant genus Prosopis have been introduced to Saudi Arabia as roadside ornamentation.…”

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confidence: 99%

“…Individuals walking on the roadside are also likely to collect pollen on shoes and clothing and transfer them to indoor environments. Published data from different countries indicate that Prosopis pollen, which pollinates partly by insects, can become airborne, 2,4,6 and can be trapped and identified on slides from air samplers. Airborne pollen of Prosopis can be inhaled through the nose and/or mouth as other pollen, resulting in sensitization of susceptible people and subsequent elicitation of symptoms of respiratory allergic diseases.…”

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Human Sensitization to Prosopis Juliflora Antigen in Saudi Arabia

et al. 1999

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“…British workers have made pollen and/or spore censuses at Davos (Davies, 1968a) and in Hong Kong (Turner, 1966), Jamaica (Meredith, 1961a(Meredith, , b, c, 1962a(Meredith, , b, 1964, Kuwait (Davies, 1969), Northern Nigeria (Dransfield, 1966) and Southern Nigeria (Cammack, 1955).…”

Section: Overseas Censuses Based On Britainmentioning

confidence: 99%

Aeropalynology in Britain—an Outline

Hyde¹

1969

New Phytologist

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SUMMARYThe author reasserts his original definition of palynology as the study of plant spores and their dispersal and applications thereof, and here considers aeropalynology as that branch of palynology which is concerned with the dissemination of plant spores in both theory and practice. During the present century important advances in methods of sampling atmospheric spores have been made and have been applied at a limited number of locations in England, Wales and Scotland either with a view to assessing the general (outdoor) aerospora of the region concerned or of various special habitats. Variation both 'circadian' and annual in the incidence of various spore types has been studied. The atmospheric transport of microbes (dispersal in the wider sense) which embraces take-ofT (liberation), free flight (dispersion proper) and landing (deposition) has occupied the attention of several workers. Advances have been made also in intramural palynology. The fact that the aerospora is a reflex of the vegetation has been recognized but not worked out in detail despite the abundant data available. Finally the author claims that the many applications of aeropalynology both potential and actual, would amply justify further long-term observation and assessment of the aerospora. INTRODUCTONPalynology was widely defined by the writer (Hyde, 1944;Hyde and Williams, 1945a) as the study of plant spores and their dispersal and applications thereof. It has tended to become limited rather to the study of pollen grains in relation to stratigraphicalespecially quaternary-geology, but the original definition with its wider connotation still stands. The word 'spore' as here understood includes pollen grains, fungus spores and other microscopic plant disseminules such as hyphal fragments (Pady and Gregory, 1963), algal cells (Gregory and Hamilton, 1955) and lichen soredia (Bailey, 1966) but not bacteria. Aeropalynology in practice is mainly concerned with the composition of the aerospora (air-spora, Gregory, 1945Gregory, , 1961 and its variation with time and place both at or near ground level (outdoors and indoors) and up aloft. It embraces the study of aerial dispersal from 'take off' to deposition and therefore impinges both on the physiology of plant reproduction on one hand and on meteorology on the other; and it can contribute significantly to bioclimatology. In so far as it is not pursued for its own sake it is valued chiefly for the sake of its applications in plant pathology (e.g. Hirst, 1959) or medicine (inhalant allergy) (Hyde, 1949(Hyde, , 1969Hyde and Williams, 1961). Both the theory and practice of aeropalynology were summarized authoritatively by P. H. Gregory in his book The Aerobiology of the Atmosphere (1961); and particular aspects of it were dealt with in important chapters by

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Spore Concentrations in the Atmosphere at Ahmadi, a New Town in Kuwait

Cited by 40 publications

References 3 publications

A 12-Month Aerobiological Survey of Pollen in Riyadh

A 12-Month Aerobiological Survey of Pollen in Riyadh

Human Sensitization to Prosopis Juliflora Antigen in Saudi Arabia

Aeropalynology in Britain—an Outline

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