Studies on Effect of $CO_2$ Concentration in Air and Pb Concentration in Soil on Pillbug Growth and Bio-accumulation

대기 중 $CO_2$ 및 토양 중 Pb 농도 증가가 공벌레의 성장과 공벌레 체내 Pb 축적에 미치는 영향에 관한 연구

  • Whang, Hwa-Yeon (Department of Environmental Science and Engineering, College of Engineering, Ewha Womans University) ;
  • Lee, Sang-Don (Department of Environmental Science and Engineering, College of Engineering, Ewha Womans University)
  • 황화연 (이화여자대학교 공과대학 환경공학과) ;
  • 이상돈 (이화여자대학교 공과대학 환경공학과)
  • Received : 2010.08.31
  • Accepted : 2010.10.30
  • Published : 2010.12.31

Abstract

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, occuring in relatively large numbers, are easily collected and identified. 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, pillbugs were collected at five sites (N=287) May 2006. Cu and Zn concentrations in pillbugs were higher than in soils (1.39-41.70 times) than in control. The high bioconcentration of lead in Sangam may be partly associated with reclaimed land uses. Pillbugs in low $CO_2$ and Pb condition showed higher growth rate than in elevated $CO_2$ and Pb condition.

Keywords

References

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