MUSEO ARGENTINO DE CIENCIAS NATURALES "BERNARDINO RIVADAVIA"
Unidad Ejecutora - UE
Use of epidermal characters as bioindicators of environmental pollution
MIRTA OLGA ARRIAGA, ; MÓNICA L. STAMPACCHIO,; MARÍA G. FERNÁNDEZ PEPI,; PATRICIA ELEONORA PERELMAN; ANA MARÍA FAGGI
Lugar: Mendoza; Año: 2014 vol. 23 p. 41 - 41
The present study explores the use of micromorphological leaf epidermal characters of Ficusbenjamina (evergreen) and Fraxinus pennsylvanica (deciduous) as indicators of pollution in theMetropolitan Area of Buenos Aires. Mature leaves of both species were sampled along an urbanperiurbangradient, with a rural area as control for epidermal characters. Parameters examinedfrom abaxial and upper epidermis were: (1) length and width of stomata, (2) number of stomataper area unit, (3) length and width of epidermal cells, (4) number of epidermal cells per areaunit. Data were analysed with basic statistical and multivariate techniques. Principal ComponentAnalysis (PCA) clearly grouped foliar samples according to three zones: urban, periurbanand rural areas with different pollution values. No correlations were observed between epidermalcharacter variations and climate variables, air pollutants or C, N, P and metals concentrationin soil. Only one positive correlation (p = 0.006) was found between stomata length inleaves from Ficus and iron concentration in soil.