The real hues of Red Rain-Kerala, India
AbstractThis scientific article presents a comprehensive exploration of the intriguing ecological phenomenon known as"red rain", observed in the coastal town located at latitude N 11 °.61108 and longitude E 75°.57383 in Kerala, India. The study aims to elucidate the origins, characteristics, and potential environmental implications associated with this phenomenon. Through a meticulous descriptive analysis, incorporating microscopic evaluation, DNA-sequencing, Fourier-transform infrared spectroscopy (FTIR), Gas Chromatography-Mass Spectrometry (GC–MS) analysis, and phylogenetic analysis, we deciphered the unde...
Source: Aerobiologia - February 28, 2024 Category: Environmental Health Source Type: research
Air pollution may alter reproductive dynamics/efficacy in plants: correlative evidences from an urban sprawl in Eastern Indo-Gangetic plain
This study aims to evaluate the reproductive behavior of 40 roadside plants, including trees, shrubs, and herbs, to higher air pollution load for three successive years (i.e. —2017, 2018, and 2019) in an Indo-gangetic urban sprawl. The mean surface concentration of three gaseous pollutants (O3, NO2, and SO2) and one particulate matter with aerodynamic diameter ≤ 1 µm (PM1) was found to be highest at the polluted sites during all seasons. Though, there is no prescribed national standard for total atmospheric deposition; but, it was found significantly higher in all the seasons at the urban sites. According to obtain...
Source: Aerobiologia - February 15, 2024 Category: Environmental Health Source Type: research
Bioaerosol exposure assessment of aquaculture workers in Korea
This study is to evaluate the level of biological hazard exposure and to provide fundamental data for the health management of aquaculture workers in Korea. A field survey was conducted to measure bioaerosol exposure at ten aquaculture farms in areas where Korean aquaculture is concentrated. Airborne bacteria and fungi with size distribution and identification were measured by simultaneously monitoring temperature and relative humidity. Particularly, high concentrations of airborne bacteria and fungi were observed in farms G and H. Compared to the standards set by the Korean Ministry of Environment, both total airborne bac...
Source: Aerobiologia - February 11, 2024 Category: Environmental Health Source Type: research
Long-read sequencing of metagenomes from wet deposition samples in the Western USA during an elevated precipitation in February 2019
AbstractDuring the month of February in 2019, the Western USA experienced elevated precipitation levels, corresponding to atmospheric river events, ending a drought period. Rainwater samples were collected at four time points across two weeks and analyzed by microscopy, analytical chemistry, and long-read sequencing methods. Quantification of whole cells showed concentrations of > 106 cells/L. Imaged cells from fluorescent and scanning electron microscopy included microeukaryotes. Analytic chemistry detected Na+ and Cl− ions, which were in agreement with back trajectories of an oceanic origin and atmospheric riv...
Source: Aerobiologia - February 7, 2024 Category: Environmental Health Source Type: research
Trends in airborne grass pollen in Évora City (Portugal)
AbstractAerobiology could be used as complementary data or proxy for studying phenology, especially in species which usually are not long-distance transported, such as grasses. This 21-year aerobiological study took place in Évora (South Portugal), using a seven-day recording volumetric pollen trap with the aim of analysing the temporal trends of grass pollen seasons. To this end, data were statistically tested for correlation and regression to determine the features and temporal trends of pollen seasons. Main results show that Poaceae pollen has a high representation in pollen spectrum, 20% (min: 7%; max: 44%), with a lo...
Source: Aerobiologia - February 6, 2024 Category: Environmental Health Source Type: research
Original research article: “trends in airborne grass pollen in Évora City (Portugal)”
AbstractAerobiology could be used as complementary data or proxy for studying phenology, especially in species which usually are not long-distance transported, such as grasses. This 21-year aerobiological study took place in Évora (South Portugal), using a seven-day recording volumetric pollen trap with the aim of analysing the temporal trends of grass pollen seasons. To this end, data were statistically tested for correlation and regression to determine the features and temporal trends of pollen seasons. Main results show that Poaceae pollen has a high representation in pollen spectrum, 20% (min: 7%; max: 44%), with a lo...
Source: Aerobiologia - February 6, 2024 Category: Environmental Health Source Type: research
Examining the roles of meteorological variables in COVID-19 spread in Malaysia
This study investigated the potential roles of five meteorological parameters (average relative humidity, maximum temperature, average temperature, minimum temperature, and average wind speed) on COVID-19 spread in each of the 13 states and the entire Malaysia. The state-wise daily COVID-19-confirmed cases and daily meteorological parameters from 1 August 2020 to 31 March 2021 were acquired from Ministry of Health Malaysia and Malaysia Meteorological Department, respectively. The correlations between state-wise daily COVID-19-confirmed cases and daily meteorological parameters were ascertained via Pearson ’s and Spearman...
Source: Aerobiologia - January 24, 2024 Category: Environmental Health Source Type: research
