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한국학술지인용색인(NRF)
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Abstract=129,68,1
1. 서론=129,68,3
2. 재료 및 방법=131,70,1
자료 분석=131,70,2
3. 결과=133,72,1
환경변수=133,72,1
대형저서동물=133,72,3
다변량분석(Multivariate analyses)=135,74,4
환경변수와의 관계분석=138,77,3
평가지수를 이용한 저서생태계 환경교란 분석=140,79,2
4. 고찰=141,80,3
5. 요약=143,82,1
사사=143,82,1
참고문헌=143,82,2
jpg
Fig. 1. Map of sampling area in Gyeonggi Bay, Korea.=130,69,1
Fig. 2. Replicate samples at each sampling site on 25 November (N), 28 December (D), and 11 February (F).=131,70,1
Fig. 3. Number of species, density (ind./㎡), diversity and biomass of macrobenthic animals during the sampling periods.=133,72,1
Fig. 4. Density (ind./㎡) of dominant species during the sampling periods.=135,74,1
Fig. 5. MDS of Bray-Curtis similarities form 4th root transformed species abundance data at each sampling date.=136,75,1
Fig. 6. MIDS plot with superimposed circles of increasing size with increasing sediment characteristics.=138,77,1
초록보기
Small-scale effects of sand mining on macrobenthic communities have been reported previously. However, little information is available as to how dredging affects the macrobenthic community structure. The objective of this study was to determine the impacts of large-scale exhibition dredging on the macrobenthic community of Gyeonggi Bay, Korea, where sand mining has continued for 20 years. Prior to dredging, the macrobenthic species composition was similar to that of areas near the dredging site, with several common dominant species found before dredging. After dredging, the number of species, density, and diversity (H') in the experimental area (sites 0 and 1) decreased significantly, but no difference was observed at other sites. Multivariate analysis (multidimensional scaling) revealed significant differences in community structure before and after dredging. The amphipod Urothoe grimaldii japonica, which was the most dominant species at sites 0, 1, and 2, decreased rapidly at sites 0 and 1 after dredging, but no difference was observed at site 2. In addition, the index of multivariate dispersion (IMD) and the relative IMD (r.IMD) were large at sites 0 and 1, suggesting that the effects of dredging were direct at site 0 and 1, but indirect at site 2. The macrobenthic communities at sites 3 and 4 were not affected by dredging, but they were affected by physical conditions and biological interactions. We suggest that benthic biotope indices such as the IMD and r.IMD may constitute a valid tool for assessing the effects of dredging on the macrobenthic community; long-term monitoring is required to verify this.
권호기사
참고문헌 (38건) : 자료제공( 네이버학술정보 )
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| 2 | (2002) 경기만내 해사부존량 추정 및 해사채취에 따른 환경영향 연구, 한국골재협회 인천지회 | 미소장 |
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