• 아시안잔디학회지
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• 제7권2_3호
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• pp.113-120
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• 1993

Dictyostelid cellular slime molds were quantitatibly isolated from Korean lawngrass turf in Seoul National University, Korea, by the 'Clonal Isolation Technique(Cavender and Raper, 1965a)'. Total six species were found. These are Dictyostelium sphaerocephalum. D. purpuream. D. flavidam, D. crassica ale, Polysphondilium pallidum. P. violaceum. D. sphaerocephalum was the dominant species and P. violaceum, D. flaviidum, D. crassicaule were rare. Compared with other region, species diversity and species richness of Korean lawngrass turf appeared to he low. The dominant species, however, is not very common in other plant communities, so it cnay he characteristic of Korean lawngrass turf.

• 수산해양기술연구
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• 제50권4호
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• pp.530-541
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• 2014

The dredge gear is dragged along the bottom of the sea to catch targeted edible bottom dwelling species. Species composition and ecological index of the catches of dredge were estimated around Gangneung coastal fishing ground by dredge with different mesh size and tooth space from July to December 2013. Eight different types of dredge including four different tooth space (24.7 mm, 29.9 mm, 34.9 mm, 40.1 mm) and four different mesh size(15.5 mm, 32.7 mm, 51.1 mm, 60.0 mm) were used in the experiment. During the experiment, total catches were collected 31 species as sipunculida 1 species, mollusca 13 species, annelida 3 species, arthropoda 8 species, echinodermata 4 species and others 2 species. The dominant genus were mollusca and echinodermata while the dominant species were Megangulus venulosus, Pseudocardium sachalinensis, Schaphechinus brevis. The richness index was ranged 1.29-1.72, evenness index was 0.6-0.65 and diversity index was 1.65-1.83 according to the tooth space and mesh size of dredge. Richness index, diversity index were high at tooth space 34.9 mm dredge and ecological index showed decreasing tendency with the increasing of mesh size of dredge. Cluster and MDS analysis, based on a Bray-Curtis and similarity matrix of fourth root transformed data of number of species and wet weight, showed division into four different groups as four different tooth space (Group A), four different mesh size Group B (51.1 mm, 60.0 mm), Group C (32.7 mm) and Group D (15.5 mm).

• 환경생물
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• 제28권2호
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• pp.108-113
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• 2010

경상남도 밀양 소재 가지산도립공원에서 채집한 317개체의 거미류는 20과 59속 66종으로 동정되었다. 종지수(species richness)는 깡충거미과 12종(20.0%), 꼬마거미과 8종(12.1%), 접시거미과 5종(7.6%), 왕거미과, 코리나거미과, 수리거미과 및 게거미과가 각 4종(6.1%), 갈거미과, 비탈거미과 및 새우게거미과가 각 3종(4.5%)의 순이었다. 동물지리구에 따른 종은 범열대종 1종(1.5%), 구북구종 4종(6.1%) 및 한국고유종은 3종(4.5%)이었으며 향후 산지에서의 생물상 및 생물자원의 분포 및 장기 모니터링에 중요한 정보를 제공할 것으로 사료된다.

• 해양환경안전학회지
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• 제28권6호
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• pp.853-865
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• 2022

본 연구는 남해안 38개 특정도서의 암반조간대에서 2019년 8월부터 10월까지 방형구(50x50cm)를 이용하여 대형저서동물의 공간분포와 우점종 조사를 실시하였다. 특정도서에서는 총 80종이 출현하였으며, 연체동물이 54종으로 67.4%를 차지하여 가장 우점하였고, 절지동물은 15종(18.7%)이었다. 그 외 자포동물, 해면동물, 극피동물은 1~6종의 범위내에서 출현하였다. 지역별로 보면, 여수의 특정도서에서 61종으로 가장 많았으며, 하동, 남해, 추자도 등에서는 각각 42~46종으로 유사하였고, 보성과 고흥은 29종으로 출현종수가 가장 적었다. 정점별 출현종수는 6종(정점 6)~33종(정점 20)의 범위로 큰 차이를 보였다. 주요 우점종은 좁쌀무늬총알고둥으로 15개 특정도서에서 우점하였으며, 그 다음으로 검은큰따개비가 11개 특정도서에서 우점종으로 출현하였다. 좁쌀무늬총알고둥은 36개 특정도서에서 출현하여 가장 넓게 분포하였으며, 대수리 30개, 굵은줄격판담치 29개, 갈고둥 28개, 갯강구 27개, 총알고둥 26개의 특정도서에서 출현하였다. 국외반출승인 대상종은 연체동물 9종, 절지동물 4종, 자포동물 2종이며, 국가적색목록은 총 50종으로 관심대상(LC)은 44종, 정보부족(DD) 3종, 미평가(NE), 준위협(NT) 및 미적용(NA)은 각각 1종씩 출현하였다. 남해안 특정도서에서 출현한 대형저서동물은 지역에 따른 노출시간, 암간 조간대의 길이, 암반기질 등 서식환경 차이에 의한 출현종수와 우점종의 차이를 보였다. 본 연구 결과는 추후 특정도서 모니터링과 관리방안 수립시 기초자료로 활용될 수 있을 것으로 생각된다.

• 한국유기농업학회지
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• 제25권4호
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• pp.875-901
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• 2017

유기농업이 생물 다양성에 미치는 효과가 제한적이라는 일부 회의적인 시각이 있긴 하지만, 유기농업은 토양의 물리적 및 생태학적 특성과 생물 다양성에 영향을 미치는 것으로 받아들여지고 있다. 본 연구는 충청북도 괴산지역에서 유기농업과 관행농업을 시행하는 논과 밭을 대상으로 경작 기간 중 채집된 무척추동물의 종을 분류 동정하여 농법의 차이에 따른 생물 다양성의 변화를 비교 분석하였다. 조사 기간인 2016년 6월부터 10월까지 채집된 총 249종의 무척추동물 중에서, 유기농업을 시행하는 지역의 논과 밭에서는 각각 104종과 108종이 관찰된 반면, 관행농업을 시행하는 논과 밭에서는 각각 84종과 77종이 관찰되어, 산술적으로 관행농업 지역에 비해 유기농업 지역의 종 다양성이 약 20% 높은 것으로 비교되었다. 특히 유기농업의 시행에 따라 곤충류와 거미류의 분류군에서 긍정적인 종 다양성 변화가 관찰되었다. 한편, 유기농업 논에서는 노린재목, 파리목, 벌목, 거미목 등의 분류군이, 그리고 유기농업 밭에서는 노린재목, 딱정벌레목, 거미목 등이 관행농업 지역의 논과 밭에 비해 생물 다양성이 증가하는 것으로 분석되어, 유기농업 시행에 따른 생물 지표종의 선정을 위해서는 향후 이들 분류군에 대한 정밀한 조사가 필요할 것으로 생각된다.

• Journal of Ecology and Environment
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• 제30권4호
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• pp.325-330
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• 2007

Recognizing the ecological importance of forest gap formation for forest community structure, we examined the differences in species diversity between forest gaps and closed canopy areas for trees and shrubs in three developmental stages (seedling, sapling I, and sapling II) in a typical mixed broadleaved-Korean pine forest. We randomly placed 100 sample plots ($2{\times}2m$ for seedling and sapling I, and $5{\times}5m$ for sapling II) in forest gap and closed canopy areas of a 9 ha permanent sample plot for vegetation surveys of plants of each developmental stage in each habitat type. Even though the formation of forest gaps encouraged the occurrence of gap-dependent species and increased overall species diversity, there were no significant differences in species richness among the three developmental stages for both tree and shrub species (p>0.05). Comparing the two types of sites, statistical tests revealed no difference in species richness for trees, but highly significant differences (p<0.01) between forest types for shrubs for seedlings and sapling I, but not sapling II. Analysis of variance test indicated that there were no significant differences in species diversity among the three developmental stages of tree species (p>0.05) for both Simpson and Shannon indices. The variance for shrub seedlings was significantly different between forest gaps and closed canopy areas, but not for sapling I and sapling II. The analysis showed that the species diversity in forest gaps was significantly different from that of closed canopy areas for seedling and sapling I (p<0.01), but not for sapling II (p>0.05).

• Journal of Forest and Environmental Science
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• 제38권2호
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• pp.90-101
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• 2022

The study aims to assess composition, diversity and population indices of natural regeneration of woody species in Jebel El Gerrie forest reserve, Blue Nile State, Sudan. We conducted field work between December 2018 and January 2019. We used random sampling to collect vegetation data in the forest where we made a total of 90 circular sample plots (radius 17.84 m) and distributed them proportionally to the area of each of the four density-based vegetation classes of the forest i.e. high density (C1), medium density (C2), low density (C3) and crop land (C4). In each sample plot we identified all regenerating tree species and counted their regeneration frequencies. We calculated ecological metrics of regeneration frequency, density, abundance, richness, evenness, diversity and importance value index (IVI) and drew abundance rank curve. Results revealed that out of fifteen mature tree species present, natural regeneration of 8 species, which belong to 6 families, was observed. The relatively most frequently naturally regenerating and abundant species were Anogeissus leiocarpa and Combretum hartmannianum. Richness, evenness and diversity of regenerating species were 1.33, 0.82 and 1.7, respectively. One-way ANOVA (α=0.05) of mean regeneration densities disclosed that there were significant differences (F_3,86=16.77, p=0.000) between C2 & C3 (p=0.000) and C2 & C4 (p=0.000). While regeneration of seven tree species were absent, two, two and four species were of good, poor and fair regeneration status, respectively. A comparison of mean density of natural regeneration with that of parent trees reflects a poor regeneration status of the forest. The study provides empirical results on the regeneration status of species and signifies the need for management interventions for species conservation and restoration, maintenance of biodiversity and sustainable production.

• 한국물환경학회지
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• 제32권1호
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• pp.15-22
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• 2016

This study aims to analyze the changes in the benthic macroinvertebrate community before and after a restoration project in a eutrophic stream. Species diversity and species richness increased at the points where the channel changed from standing water to running water. However, species diversity and richness decreased at the points where only riparian restoration was implemented, and the concentration of suspended solids increased, while biochemical oxygen demand and total phosphorus decreased and the concentration of dissolved oxygen increased. In such reaches, functional feeding groups went from collector-filterers to collector-gatherers, and habitat orientation groups changed from clingers to burrowers.

• 한국해양학회지:바다
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• 제8권1호
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• pp.14-28
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• 2003

2001년 6월 광양만의 38개 조사정점에서 출현한 대형저서동물은 총 154종이었고, 평균 서식밀도는 1,286 개체/$m^2$였다. 다모류가 출현종수와 개체수에서 가장 우점한 동물분류군이었고, 주요 우점종은 다모류의 Tharyx sp.(44.8%), Lumbrineris longifolia(14.0%), 이매패류의 Mytilus edulis(6.5%), 단각류의 Corophium sinense(4.5%), 다모류의 Heteromastus filiformis(3.6%), Sigambra tentaculata(1.7%)등이었다. 광양만의 묘도 서쪽에 위치한 정점들에서 종 수와 개체수가 적었고, 광양만의 주수로역에서 풍부한 생물상을 보였다. 군집분석결과 7개 정점군으로 구분될 수 있었으며, 광양만의 서부해역은 환경교란에 의해 종조성에 차이를 보이는 다양한 저서생물군집으로 구성되어 있었다.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제2권3호
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• pp.144-152
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• 2021

Sanankerto is one of pilot projects for tourism villages in Indonesia due to its natural tourism potential with a 24-ha bamboo forest located in Boon Pring Andeman area. However, the distribution of existing bamboo has never been identified or mapped. Thus, the mana gement is facing difficulty in planning and developing tourism potential as well as spatial management in the area. Therefore, the objectives of this study were to identify and analyze the structure of bamboo vegetation in the Boon Pring Tourism village an d to perform vegetation mapping. The type of research was descriptive exploratory with a cluster sampling technique (i.e., a two-stage cluster) covering an area of ± 10 ha. Bamboo vegetation analysis was performed by calculating diversity index (H'), evenness index (E), and Species Richness index (R). Data were collected through observation and interviews with local people and the manager to determine zonation division. Mapping of bamboo vegetation based on zoning was processed into thematic maps using ArcG is 10.3. Micro climatic factors were measured with three replications for each sub -cluster. Data were analyzed descriptively and quantitatively. Nine species of bamboo identified. Diversity, evenness, and species richness indices differed at each location. Activities of local communities, tourists, and manager determined the presence, number, and distribution of bamboo species. These bamboo distribution maps in three zoning (utilization, buffer, and core) can be used by manager for planning and developing natural tourism potential.