Eco global survival sawmill
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Este estudio tiene como objetivo utilizar lombrices (Eudrilus eugeniae, Libyodrilus violaceous y Hyperiodrilus africanus) de origen aserradero como bioindicadores de contaminación por metales en los aserraderos. Resumen: A través de los años, la industria de aserraderos ha mostrado un alto crecimiento en las áreas de bosque tropical de Nigeria, lanzando varios residuos al ambiente. Key words: stress enzymesstress enzymes,Bio-indicatorBio-indicator,heavy metalsheavy metals,sawmillingsawmilling,pollutionpollution,earthwormsearthworms. Sawmilling therefore posses potential risks on sawmill soil and soil fauna, especially earthworm species. Stronger relationship exists in the metal concentrations between the earthworms and soils (R= 0.602) than between the plants and soil (R= 0.405). The concentrations of Cu, Co and Ni were higher in the soil of the control site than in the sawmill soils. Sapon sawmill recorded significantly higher (P < 0.05) levels of Cd and Cu in plants as well as Pb and Cd in soil samples than those of the other locations.
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This study also revealed that Pb and Cd concentrations were higher in the earthworms, plants and soil from the sawmills than those of the control site. eugeniae from Sapon sawmill than those of Kotopo sawmill and the control site. Levels of SOD, GPx and CAT activities were significantly higher (P < 0.05) in E.
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eugeniae from Sapon and Kotopo sawmills, as compared to six protein bands of E. Gel electro-phoresis results revealed the presence of nine protein bands in E. Heavy metal analysis was also conducted on soil, plant and earthworm samples using Atomic Absorption Spectrophotometer. Protein analysis was conducted on the earthworms using gel electrophoresis while the activities of Superoxide dismutase (SOD), Catalase (CAT) and Glutathione peroxidase (GPx) were done spectrophotometrically. Earthworms, plant and soil samples were collected each month for three months (March to May, 2013), randomly from different points at each of the locations. The arboretum of the Federal University of Agriculture, Abeokuta was used as control site. Four major sawmills located in Abeokuta (7☉'11"44" N - 3☁9'35" E), namely Lafenwa, Sapon, Isale-Ake and Kotopo sawmills were used for this study. This study aims at using earthworms (Eudrilus eugeniae, Libyodrilus violaceous and Hyperiodrilus africanus) of sawmill origin as bio-indicators of metal pollution in sawmills. Abstract: Over the years, sawmilling industries have shown a high growth in the rain forest areas of Nigeria, releasing several wastes into the environment.