토양 내 서식하는 공벌레의 중금속 축적에 따른 생태적 연구 (Ecological study on effects of heavy metal accumulation on pillbugs)

서지정보

· 발행기관 : 한국환경영향평가학회
· 수록지 정보 : 환경영향평가 / 20권 / 5호 / 675 ~ 684페이지
· 저자명 : 이상돈

초록

In nature, the overall effect of heavy metals on the biota can be influenced by a number of environmental factors like soil characteristics and air pollution by elevated CO_2.
Pillbugs (Isopoda, Armadillium vulgare) take up heavy metals with their food and store them mainly in the vesicles of hepatopancreas. They accumulate certain metals, occur in relatively large numbers, are easily collected and identified, and provide sufficient material for analysis.
The species are decomposing litter well and soil impurities into N and P. Therefore, it has been suggested that total body concentration of metals in pillbugs could be positively correlated to the levels of environmental exposure and that pillbugs could be used as biological indicators of metal pollution and global change by CO_2. The aim of the study is to determine effects of heavy metal concentrations in soil and elevated CO_2 on pillbugs’ body accumulation of heavy metal and growth rate.
In this study, the concentrations of six metals (Fe, Mg Cu, Zn, Pb, Cd) have been determined.
Pillbugs (N=287) were collected at five sites during Jul-Aug, 2006. Cu and Zn concentrations in the body were much higher than in the soils(1.39-41.70 times). This indicated that bioaccumulation of some of the heavy metals were increasing in the food-chain. The high bioconcentration of lead in Sangam may be partly associated with reclaimed land uses.

영어초록

In nature, the overall effect of heavy metals on the biota can be influenced by a number of environmental factors like soil characteristics and air pollution by elevated CO_2.
Pillbugs (Isopoda, Armadillium vulgare) take up heavy metals with their food and store them mainly in the vesicles of hepatopancreas. They accumulate certain metals, occur in relatively large numbers, are easily collected and identified, and provide sufficient material for analysis.
The species are decomposing litter well and soil impurities into N and P. Therefore, it has been suggested that total body concentration of metals in pillbugs could be positively correlated to the levels of environmental exposure and that pillbugs could be used as biological indicators of metal pollution and global change by CO_2. The aim of the study is to determine effects of heavy metal concentrations in soil and elevated CO_2 on pillbugs’ body accumulation of heavy metal and growth rate.
In this study, the concentrations of six metals (Fe, Mg Cu, Zn, Pb, Cd) have been determined.
Pillbugs (N=287) were collected at five sites during Jul-Aug, 2006. Cu and Zn concentrations in the body were much higher than in the soils(1.39-41.70 times). This indicated that bioaccumulation of some of the heavy metals were increasing in the food-chain. The high bioconcentration of lead in Sangam may be partly associated with reclaimed land uses.

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