• 한국균학회지
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• 제42권2호
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• pp.133-137
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• 2014

본 연구에서는 간벌 처리에 따른 외생균근균의 군집 구조의 변화를 확인하기 위해 간벌지와 비간벌지에서 정량적으로 토양을 채취하여 간벌에 따른 외생균근균의 종 다양성, 종 수, 외생균근 수, 군집 내 종 구성을 비교하였다. 분석 결과 간벌지와 비간벌지는 공통적으로 Russula 속이 우점하고 있으나, 간벌 처리 후 산림 토양의 외생균근균 군집의 종 구성이 달라지고 종 수가 증가되는 것을 확인하였다. 본 연구결과는 간벌이 산림 생태계의 지상부 뿐만 아니라 외생균근균과 같은 토양속의 미생물의 군집 구조에도 유의미한 영향을 미치는 중요한 요인이라는 것을 보여주고 있다.

• 환경생물
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• 제39권2호
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• pp.137-146
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• 2021

이 연구의 목적은 농업생태계에 존재하는 작고 파편화된 숲과 인근 산림생태계 내 연속된 숲에 서식하는 대형나방의 종 다양성과 종구성의 차이를 알아보는데 있다. 전남 서남부 8개 지역에서 2018과 2019년 6월과 8월 자외선 등 트랩을 이용하여 대형나방을 채집, 분석한 결과 두 숲 유형 간 뚜렷한 차이를 보였으며 두 그룹 간 종 수, 개체수, 종다양성 지수(H') 모두 산림생태계 숲이 농업생태계 숲보다 더 높게 나타났다. 유사도지수를 이용하여 나방 군집간 차이를 알아본 결과 농업생태계 숲에서 베타다양성이 높음을 확인하였다. 또한 종 구성의 변화율(Turnover)과 내포성(Nestedness)을 따로 나누어 분석한 결과 산림생태계는 종 구성 변화율이 큰 반면 농업생태계는 내포성이 비교적 크게 나타나 서식지 유형에 따라 나방 군집 구성의 차이가 다른 것을 확인할 수 있었다.

• 생태와환경
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• 제49권4호
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• pp.271-278
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• 2016

Forest clear-cutting operations influence biodiversity through habitat changes and food resource availability for inhabitant species. This study examined the effects of clear-cutting on forest arthropod communities. Arthropods were collected from two different forest treatment areas (clear-cut and control) in summer and autumn. In each treatment area, arthropods were sampled from both crown and ground surfaces using sweeping and pitfall trap methods, respectively. Then, the taxonomic order of the collected arthropod specimens was easily identified. Results indicate that arthropod abundance and number of taxa present were higher at ground surface than at crown levels in both clear-cut and control areas. At crown level, more homopteran species were present in clear-cut areas than in control areas in summer. At ground surface, populations of Isopoda and Opiliones were higher in control areas than in clear-cut areas, whereas numbers of Araneae, Orthoptera, and Hymenoptera were greater in clear-cut areas. Cluster analysis and principal component analysis showed distinct differences between clear-cut and control communities at crown level in summer and at ground surface in autumn. Thus, our results indicate that clear-cutting significantly influences arthropod communities, and higher taxa are valuable for conducting rapid biological assessments of ecosystem disturbances.

• The Korean Journal of Ecology
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• 제15권2호
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• pp.181-189
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• 1992

Dictyostelid cellular slime molds were quantitatibly isolated from the soils of mt.halla (above 900m in altitude), korea, according to the 'clonal isolation technique(cavender and raper, 1965a)'. Total fifteen species were found, including 1 new and 6 undescribed species.these are dictyostelium mucorodes, dictostelium minutem,polysphondylium pallidum fasciculatum, polysphondylium violaceum, dictyostelium flavidum,dictyostelium fasciculatum, polysphondylium violaceum, dictyostelium flavidum sp. n.(HL-1),dictyostelium aureo-stipes var. aureo-stipes, dictyostelium capitatum, dictyostelium giganteum,dictyostelium polycephalum,dictyostelium brefeldianum,dictyostelium macrocephalum, and dictyostelium sphaerocephalum, dictyostelium sp. (HL-2), dictyostelium sp. (CJ-9). D. mucoroides was the dominant species, and D. minutam,p.pallidum, d. fasciculatum, and p. violaceum were relatively common. d. polycephalum, d. brefeldianum, d. macrocephalum, dictyostelium sp. (HL-3), and d. sphaerocephalum were very rare. Species diversity appeared to be the highest in the deciduous broad-leaved forest from the soils of which 14 species were isolated. eight species were, including five undescribed species, isolated only from this forest soils. Number of isolates severely decrease at the forests above 1,500m in altitude.

• The Korean Journal of Ecology
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• 제10권1호
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• pp.43-51
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• 1987

The forest vegetation of Jongyeoul hill, Seoul, was classified into six secondary forests and two plantations by ZM method; Pinus densiflora, Quercus acutissima, Pinus rigida, Robinia pseudoacacia and Alnus hirsuta-Quercus mongolica community, and Castanea crenata and Pinus koraiensis plantation. In the herb layer the species richness and total coverage of deciduous broad leaf forests showed higher values than those of evergreen needle leaf forests. The peak in July at Q. acutissima forest and in the middle of June at R. pseudoacacia forest. Simpson's diversity index(Ds) in different stands are as follows: Ds>0.6 in R. pseudoacacia forest, Ds=0.3~0.6 in Q. acutissima forest and Ds<0.3 in P. densiflora and P. rigida forest. It is found that, although dominance rank and importance value were originated from different school each other, two measures can be used exchangablym showing almost linear positive correlation between them in this study.

• 환경생물
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• 제19권4호
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• pp.278-281
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• 2001

모악산 도립공원의 양서 ${\cdot}$ 파충류에 대한 생태측정 및 서식환경 분석을 하였다. 이 중 서식환경은 활엽수림, 침엽수림, 식재림, 그리고 기타지역(웅덩이, 호수, 논, 하천 및 강 등)으로 나누어 조사하였다. 그 결과 양서류는 총 1목 4과 8종이 관찰 및 채집되었다. 양서류의 생물다양성 지수 조사는 종 풍부도가 1.270, 다양도는 1.77, 그리고 균등도가 0.853으로 나타났으며 서식환경을 살펴보면, 활엽수에서 42.1.%rk 관찰되었으며, 침엽수에서 11.3% 식재림에서 1.6%, 그리고 기타지역에서 45.0%가 관찰되었다.

• 한국균학회지
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• 제50권2호
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• pp.125-130
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• 2022

The powdery mildew found on Magnolia kobus was recorded as Microsphaera alni for the first time in Korea in 1975. After splitting M. alni into several distinct species, this mildew was regarded as Microsphaera magnifica, now Erysiphe magnifica. Since E. magnifica is known to be a North American species, the powdery mildew found on M. kobus in Korea was studied to clarify its identity. Based on morphological characteristics and sequencing results of the internal transcribed spacer and large subunit rDNA gene, the powdery mildew found on M. kobus in Korea was identified as Erysiphe magnoliicola.

• The Korean Journal of Ecology
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• 제14권1호
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• pp.15-23
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• 1991

The early vegetational recovery and species diversity were investigaed in burned pine forest of Mt. Todoksn from 1986 to 1990. The changes of vegetation in the burned site occurred Miscanthus→Miscanthus-Lespedeza→Lespedeza community. The biological spectra based on SD(%) and SP(%) of the burned site were similar to the unburned site with H---e type. The degree of succession(DS) was gradually increased with succession in burned site. The species diversity index(H') and evenness index(e) were declining successional trend, nut dominance index(C) inclining successional trend in the burned site. The domiance-diversity curves of the burned site showed gradual decrease in diversity and evenness, and then slopes of them were progressively steep in early successional stage.

• Journal of Plant Biology
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• 제27권1호
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• pp.25-32
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• 1984

A study on the dominance-diversity of forest vegetation in Mt. Seolag was conducted from May 1981 to Aug. 1983. Based on the field data, the dominance-diversity curves were for 16 sites including slopes and vallies. The curves are grouped in two types, lognormal distribution at the sites of mature vegetation and geometric series at the disturbed or rocky sites. It seems that the curves express the nature of their ecocline, by the hypotheses of some investigators, i.e. Random Niche hypothesis, Niche Pre-emption hypothesis, Lognormal distribution and Logarithmic series. The dominance concentration among the southern, northern and western slope, H'=1.282 at southern slope and H'=1.385 at western slope. Dominance-diversity curves of 16 sites showed Preston's lognormal distribution with small variations among them. It seems that the dominance diversity reflects the differences in the coenocline of their sites. The top 10 dominant species in species sequence of 113 tree species in whole the mountain, were noticed: Quercus mongolica, Pinus densiflora, Acer pseudo-siebold anum, Quercus serrata, Carpinus laxiflora, Styrax obassia, Fraxinus rhynchophylla, Tilia amurensis, Lindera obtusiloba and Abies holophylla in order.

• Journal of Plant Biology
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• 제2권2호
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• pp.22-24
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• 1959

1. In this paper the author reports on 16 species fo the higher fungi, Which were collected in the Dagelet Island during the periods of October 5-22, 1958. 2. They are Classified as follows : 1. Class, 2 subClasses, 4 orders, 8 families, 13 genera and 16 species. Among them 2 unrecorded species are included.