Impact of chromium and aluminium pollution on the diversity of zooplankton: A case study in the Chimaliapan wetland (Ramsar site) (Lerma basin, Mexico)
Por:
García-García G., Nandini S., Sarma, SSS, Martínez-Jerónimo F., Jiménez-Contreras J.
Publicada:
1 mar 2012
Categoría:
Environmental Engineering
Resumen:
Biological monitoring and the use of biotic indices are important in evaluating the health of aquatic systems. However, zooplankton are rarely included in biomonitoring protocols. We conducted a one-year study (March 2008-February 2009) at two sites from the Chimaliapan wetland, with concentrations of aluminium (Al) and chromium (Cr) above and within the permissible limits, respectively. Metals in the sediment and water were analyzed from three locations per site every two months. In addition to analyses of the abundance and diversity of rotifers, cladocerans and copepods, we sampled 11 physicochemical variables in the water and six from the sediments. The metal concentration in the polluted site (significantly above the permissible limits) ranged between 7266-8174 mg Kg(-1) of Al and 14.6-18.3 mg Kg(-1) of Cr. We found 92 species of rotifers, cladocerans and copepods. The Brillouin index for both sites ranged from 3.9-5.4, the Shannon-Wiener index from 4.2-5.5 while the Brachionus-Tri
Filiaciones:
García-García G.:
Posgrado en Ciencias Quimicobiológicas, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
Nandini S.:
Univ Nacl Autonoma Mexico, Div Res & Postgrad Studies, Lab Aquat Zool, Tlalnepantla 54090, State Of Mexico, Mexico
Laboratory of Aquatic Zoology, Division of Research and Post-Graduate Studies, National Autonomous University of Mexico Campus-Iztacala, Av. de Los Barrios # 1, Los Reyes, Iztacala, Tlalnepantla, State of Mexico 54090, Mexico
Sarma, SSS:
Univ Nacl Autonoma Mexico, Div Res & Postgrad Studies, Lab Aquat Zool, Tlalnepantla 54090, State Of Mexico, Mexico
Martínez-Jerónimo F.:
Posgrado en Ciencias Quimicobiológicas, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
Jiménez-Contreras J.:
Univ Nacl Autonoma Mexico, Div Res & Postgrad Studies, Lab Aquat Zool, Tlalnepantla 54090, State Of Mexico, Mexico
Laboratory of Aquatic Zoology, Division of Research and Post-Graduate Studies, National Autonomous University of Mexico Campus-Iztacala, Av. de Los Barrios # 1, Los Reyes, Iztacala, Tlalnepantla, State of Mexico 54090, Mexico
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