Torben Sigsgaard

Airborne Cladosporium and Alternaria spore concentrations through 26 years in Copenhagen, Denmark

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Airborne Cladosporium and Alternaria spore concentrations through 26 years in Copenhagen, Denmark. / Olsen, Yulia; Skjøth, Carsten Ambelas; Hertel, Ole; Rasmussen, Karen; Sigsgaard, Torben; Gosewinkel, Ulrich.

I: Aerobiologia, 2020.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

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@article{579c7eaf710c452499b7cbd2cf626542,
title = "Airborne Cladosporium and Alternaria spore concentrations through 26 years in Copenhagen, Denmark",
abstract = "Cladosporium spp. and Alternaria spp. spores are dominating the airspora of Denmark. Currently, little is known about the influence of climate change on the fungal spore abundance in the air. The aim of this study was to examine temporal changes in airborne Alternaria and Cladosporium spores over 26 years. This is the first report of long-term airborne Cladosporium spore occurrence in Denmark. Air spore concentrations were obtained with a Burkard volumetric spore sampler placed in Copenhagen, Denmark, during June–September, 1990–2015. The highest monthly Spore integrals (SIn) for Alternaria were measured in August, whereas for Cladosporium July SIn was nearly as high as August SIn. Average Alternaria seasonal spore integral (SSIn) was 8615 Spores day m−3, while average 3-month (July–September) Cladosporium SIn was 375,533 Spores day m−3. Despite increasing annual temperature and decreasing relative humidity, we found a decreasing trend for Alternaria seasonal SIn (Slope = − 277, R2 = 0.38, p < 0.05), Alternaria (Slope = − 31, R2 = 0.27, p < 0.05) and Cladosporium (Slope = − 440, R2 = 0.23, p < 0.05) annual peak concentrations. We did not find any statistically significant trends for airborne Alternaria seasonal characteristics and duration, and likewise for Cladosporium 3-month SIn and peak concentration dates. Mean temperature was the main meteorological factor affecting daily spore concentrations. However, effect of meteorological parameters on daily spore concentrations was stronger for Cladosporium (R2 = 0.41) than for Alternaria (R2 = 0.21). Both genera had diurnal peaks during the day hours, earlier for Cladosporium (11:30–14:30) and later for Alternaria (15:00–19:00). Although Alternaria and Cladosporium daily concentrations were moderately correlated (Spearman’s correlation coefficient: rs = 0.55, p < 0.05), their overall annual indices were different, which indicates different sources and different factors determining spore release. We explain temporal decreasing trends in Alternaria SSIn by growing urbanisation around Copenhagen and by changes in agricultural practices.",
keywords = "Alternaria, Annual trends, Cladosporium, Climate change, Land use, Respiratory allergy, WEATHER, DIDYMELLA, CLIMATE-CHANGE, METEOROLOGY, PATTERNS, POLAND, GANODERMA, AIR-POLLUTION, ALLERGENIC FUNGAL SPORES, ATMOSPHERIC CONCENTRATIONS",
author = "Yulia Olsen and Skj{\o}th, {Carsten Ambelas} and Ole Hertel and Karen Rasmussen and Torben Sigsgaard and Ulrich Gosewinkel",
year = "2020",
doi = "10.1007/s10453-019-09618-7",
language = "English",
journal = "Aerobiologia",
issn = "0393-5965",
publisher = "Springer",

}

RIS

TY - JOUR

T1 - Airborne Cladosporium and Alternaria spore concentrations through 26 years in Copenhagen, Denmark

AU - Olsen, Yulia

AU - Skjøth, Carsten Ambelas

AU - Hertel, Ole

AU - Rasmussen, Karen

AU - Sigsgaard, Torben

AU - Gosewinkel, Ulrich

PY - 2020

Y1 - 2020

N2 - Cladosporium spp. and Alternaria spp. spores are dominating the airspora of Denmark. Currently, little is known about the influence of climate change on the fungal spore abundance in the air. The aim of this study was to examine temporal changes in airborne Alternaria and Cladosporium spores over 26 years. This is the first report of long-term airborne Cladosporium spore occurrence in Denmark. Air spore concentrations were obtained with a Burkard volumetric spore sampler placed in Copenhagen, Denmark, during June–September, 1990–2015. The highest monthly Spore integrals (SIn) for Alternaria were measured in August, whereas for Cladosporium July SIn was nearly as high as August SIn. Average Alternaria seasonal spore integral (SSIn) was 8615 Spores day m−3, while average 3-month (July–September) Cladosporium SIn was 375,533 Spores day m−3. Despite increasing annual temperature and decreasing relative humidity, we found a decreasing trend for Alternaria seasonal SIn (Slope = − 277, R2 = 0.38, p < 0.05), Alternaria (Slope = − 31, R2 = 0.27, p < 0.05) and Cladosporium (Slope = − 440, R2 = 0.23, p < 0.05) annual peak concentrations. We did not find any statistically significant trends for airborne Alternaria seasonal characteristics and duration, and likewise for Cladosporium 3-month SIn and peak concentration dates. Mean temperature was the main meteorological factor affecting daily spore concentrations. However, effect of meteorological parameters on daily spore concentrations was stronger for Cladosporium (R2 = 0.41) than for Alternaria (R2 = 0.21). Both genera had diurnal peaks during the day hours, earlier for Cladosporium (11:30–14:30) and later for Alternaria (15:00–19:00). Although Alternaria and Cladosporium daily concentrations were moderately correlated (Spearman’s correlation coefficient: rs = 0.55, p < 0.05), their overall annual indices were different, which indicates different sources and different factors determining spore release. We explain temporal decreasing trends in Alternaria SSIn by growing urbanisation around Copenhagen and by changes in agricultural practices.

AB - Cladosporium spp. and Alternaria spp. spores are dominating the airspora of Denmark. Currently, little is known about the influence of climate change on the fungal spore abundance in the air. The aim of this study was to examine temporal changes in airborne Alternaria and Cladosporium spores over 26 years. This is the first report of long-term airborne Cladosporium spore occurrence in Denmark. Air spore concentrations were obtained with a Burkard volumetric spore sampler placed in Copenhagen, Denmark, during June–September, 1990–2015. The highest monthly Spore integrals (SIn) for Alternaria were measured in August, whereas for Cladosporium July SIn was nearly as high as August SIn. Average Alternaria seasonal spore integral (SSIn) was 8615 Spores day m−3, while average 3-month (July–September) Cladosporium SIn was 375,533 Spores day m−3. Despite increasing annual temperature and decreasing relative humidity, we found a decreasing trend for Alternaria seasonal SIn (Slope = − 277, R2 = 0.38, p < 0.05), Alternaria (Slope = − 31, R2 = 0.27, p < 0.05) and Cladosporium (Slope = − 440, R2 = 0.23, p < 0.05) annual peak concentrations. We did not find any statistically significant trends for airborne Alternaria seasonal characteristics and duration, and likewise for Cladosporium 3-month SIn and peak concentration dates. Mean temperature was the main meteorological factor affecting daily spore concentrations. However, effect of meteorological parameters on daily spore concentrations was stronger for Cladosporium (R2 = 0.41) than for Alternaria (R2 = 0.21). Both genera had diurnal peaks during the day hours, earlier for Cladosporium (11:30–14:30) and later for Alternaria (15:00–19:00). Although Alternaria and Cladosporium daily concentrations were moderately correlated (Spearman’s correlation coefficient: rs = 0.55, p < 0.05), their overall annual indices were different, which indicates different sources and different factors determining spore release. We explain temporal decreasing trends in Alternaria SSIn by growing urbanisation around Copenhagen and by changes in agricultural practices.

KW - Alternaria

KW - Annual trends

KW - Cladosporium

KW - Climate change

KW - Land use

KW - Respiratory allergy

KW - WEATHER

KW - DIDYMELLA

KW - CLIMATE-CHANGE

KW - METEOROLOGY

KW - PATTERNS

KW - POLAND

KW - GANODERMA

KW - AIR-POLLUTION

KW - ALLERGENIC FUNGAL SPORES

KW - ATMOSPHERIC CONCENTRATIONS

UR - http://www.scopus.com/inward/record.url?scp=85075369408&partnerID=8YFLogxK

U2 - 10.1007/s10453-019-09618-7

DO - 10.1007/s10453-019-09618-7

M3 - Journal article

AN - SCOPUS:85075369408

JO - Aerobiologia

JF - Aerobiologia

SN - 0393-5965

ER -