Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Evaluation of Exposure Times for Periphyton Biomass Estimate using Artificial Substrata in Headwater Streams

상류하천에서의 인공저층을 이용한 부착조류의 생체량 측정을 위한 노출기간 평가

  • Kim, Hyun-Woo (Dept. of Biology, College of Natural Science, Pusan National University) ;
  • Ha, Kyong (Dept. of Biology, College of Natural Science, Pusan National University) ;
  • Joo, Gea-Jae (Dept. of Biology, College of Natural Science, Pusan National University)
  • 김현우 (부산대학교 생물학과) ;
  • 하경 (부산대학교 생물학과) ;
  • 주기재 (부산대학교 생물학과)
  • Published : 1998.02.01
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Abstract

During the spring and fall of 1994 and winter of 1995, the exposure time of periphyton biomass on terval. In the streams with low periphyton biomass (chi. a: 2-4 mg/$m^2$) in natural rocks, biomass of arttificial substrata (unglazed tile: $3.7{\times}9.5{\times}2 cm$) exceeded that of the natural rocks after 28 days, while sites with high biomass (chi. a: 20-60 mg/$m^2$) in natural rocks showed slower biomass accumulation after 40 days. Due to the high licht input and temperature in a Partially shaded mountain stream, development of periphyton biomass in spring occurred faster than that of winter. In general, development of periphyton biomass placed on artificial substrata took 4-5 weeks in spring and at least 6 weeks In winter to reach the natural level.

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References

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