Deposition of atmospheric particles on almond tree leaves (Terminalia catappa) as bioindicators of air Quality in the Urban Area of Pichanaqui, Peru

Abstract

Pichanaqui  is  a  city  located  in  the  central  jungle,  currently  experiencing  economic development and population growth, whose effects on air quality are still unknown. This study analyzes, for the first time, the deposition of atmospheric particles on the leaves of Terminalia catappa as bioindicators of air quality in this urban area. Four sampling points (P1, P2, P3, and P4) were established in streets with different sources of atmospheric particle emissions. At each point, leaves of T. catappa were collected, and the percentage of particle deposition on the leaves was quantified. The results indicate  a  significantly  higher  deposition  at  P3  (80.3±0.1%,  p<0.001),  an  area  with greater  vehicle  traffic  and  commercial  activity,  suggesting  the  potential  use  of  T. catappa  as  bioindicators  of  air  quality.  This  study  provides  a  scientific  basis  for developing strategies for monitoring and controlling air pollution in the jungle.