Population dependent alteration in urban airborne bacterial communities enriched with pathogens: A study over Delhi, India
Rattachement africain : in, jp. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Urban airborne bacteria demand more attention due to their diversity and ability to adapt in different ambient conditions, causing significant impact on human health. Current study investigates weather-dependent composition, diversity, and variability of urban airborne bacterial loading over Delhi, the most polluted metropolitan city in India. Simultaneous winter-time airborne bacterial samples are collected under different weather conditions, namely typical winter (TW), haze (HZ), rain (RN), and seasonal transition (ST) from winter to summer, over high and low populated region (HPR and LPR, respectively). Maximum bacterial diversity with highest cell count (13.1±1.4×10 5 m -3 ) is noticed on HZ, followed by ST, TW, and RN. Winter haze could be responsible for proliferation of unique bacteria possibly due to abundance of nutrients in air. About 20% increase in bacterial loading is recorded over HPR due to stronger emissions from human activities. 10% bacterial genera are independent of spatial and temporal variation, representing urban background bacterial population. Beta diversities analysis revealed three distinct clusters, each corresponding to HZ, RN, and ST, due to significant variations in weather and air pollution. Ambient meteorology plays a major role in shaping bacterial diversity, contributing upto 60%, while urban air pollution accounted for 20%. Among meteorological parameters, temperature is most influential and positively correlated with bacterial diversity, while RH and wind speed are negatively correlated. Airborne pathogens like Acinetobacter and Corynebacterium , associated with respiratory diseases and skin infections, are in higher abundance in RN and warmer ST days. Present findings highlight public health risks posed by airborne pathogens over Delhi.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Population dependent alteration in urban airborne bacterial communities enriched with pathogens: A study over Delhi, India
- Date Crossref
- 01/08/2025
- Éditeur
- Elsevier BV
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
-
Bose Institute Department of Physical Sciences pays non établi dans la noticeStructure de recherche
-
Research Institute for Humanity and Nature pays non établi dans la noticeStructure de recherche
-
Indian Institute of Tropical Meteorology pays non établi dans la noticeStructure de recherche
-
Jawaharlal Nehru University pays non établi dans la noticeUniversité ou école supérieure
-
Hokkaido University pays non établi dans la noticeUniversité ou école supérieure
-
Japan Agency for Marine-Earth Science and Technology pays non établi dans la noticeStructure de recherche
-
School of Environmental Sciences pays non établi dans la noticeUniversité ou école supérieure
-
Graduate School of Medicine pays non établi dans la noticeUniversité ou école supérieure
-
Research Institute for Global Change pays non établi dans la noticeStructure de recherche
Department of Physical Sciences — Bose Institute, Research Institute for Humanity and Nature et Indian Institute of Tropical Meteorology, avec 6 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.