TY - JOUR
T1 - Biomonitoreo de metales pesados en plumas de aves acuáticas residentes del Lago de Chapala, México
AU - González, Deisy
AU - Álvarez Bernal, Dioselina
AU - Mora, Miguel
AU - Buelna-Osben, Héctor René
AU - Ruelas-Insunza, Jorge Ricardo
N1 - Publisher Copyright:
© 2018, Centro de Ciencias de la Atmosfera, UNAM. All rights reserved.
PY - 2018
Y1 - 2018
N2 - Lake Chapala is considered important because of the economic, recreational, and ecological services that it offers. The main water source of the lake is the Lerma river, which receives industrial waste discharges from the states of Mexico, Queretaro, and Guanajuato, as well as municipal and agricultural waste discharges from the states of Michoacan and Jalisco. Contaminants present in such waste discharges can accumulate through the food web and affect other species in the Chapala ecosystem. We estimated heavy metal pollution in the lake by measuring concentrations of Ag, As, Cd, Cr, Hg, Pb, Sr and Ti in water and sediments, and in feathers from three resident aquatic birds (Ardea alba, Egretta thula, Nycticorax nycticorax). The analysis of heavy metals in feathers was performed using inductively-coupled mass spectrometry. A. alba had significantly greater concentrations of Pb (43.65 µg/g) and Cr (52.47 µg/g) in feathers (rachis) than E. thula and N. nycticorax (p ≤ 0.05). The biota-sediment bioacccumulation factors suggest accumulation of Ag, As, Cd, Cr, Cu, Hg and Pb in birds from Lake Chapala. Feathers from resident aquatic bird species in Lake Chapala can be used as a non-lethal procedure useful for monitoring heavy metal contamination.
AB - Lake Chapala is considered important because of the economic, recreational, and ecological services that it offers. The main water source of the lake is the Lerma river, which receives industrial waste discharges from the states of Mexico, Queretaro, and Guanajuato, as well as municipal and agricultural waste discharges from the states of Michoacan and Jalisco. Contaminants present in such waste discharges can accumulate through the food web and affect other species in the Chapala ecosystem. We estimated heavy metal pollution in the lake by measuring concentrations of Ag, As, Cd, Cr, Hg, Pb, Sr and Ti in water and sediments, and in feathers from three resident aquatic birds (Ardea alba, Egretta thula, Nycticorax nycticorax). The analysis of heavy metals in feathers was performed using inductively-coupled mass spectrometry. A. alba had significantly greater concentrations of Pb (43.65 µg/g) and Cr (52.47 µg/g) in feathers (rachis) than E. thula and N. nycticorax (p ≤ 0.05). The biota-sediment bioacccumulation factors suggest accumulation of Ag, As, Cd, Cr, Cu, Hg and Pb in birds from Lake Chapala. Feathers from resident aquatic bird species in Lake Chapala can be used as a non-lethal procedure useful for monitoring heavy metal contamination.
KW - Ardea alba
KW - Egretta thula
KW - Nycticorax nycticorax
KW - Pollution
KW - RAMSAR site
KW - Wetland
UR - http://www.scopus.com/inward/record.url?scp=85047665820&partnerID=8YFLogxK
U2 - 10.20937/RICA.2018.34.02.03
DO - 10.20937/RICA.2018.34.02.03
M3 - Artículo
SN - 0188-4999
VL - 34
SP - 215
EP - 224
JO - Revista Internacional de Contaminacion Ambiental
JF - Revista Internacional de Contaminacion Ambiental
IS - 2
ER -