• 제목/요약/키워드: EVENNESS INDEX

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농촌지역 소택형습지의 생육환경에 따른 저서성대형무척추동물 군집 특성 (Community Characteristics of Benthic Macroinvertebrates according to Growth Environment at Rural Palustrine Wetland)

  • 손진관;김남춘;김미희;강방훈
    • 한국환경복원기술학회지
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    • 제15권5호
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    • pp.129-144
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    • 2012
  • This study was conducted to understand the community characteristics of benthic macroinvertebrates according to Growth Environment at 6 Palustrine Wetlands in a rural area. As growth environment factors, size, water depth, water inlet and water outlet, land-use and water environment was analyzed. Two years' quantitative collection of benthic macroinvertebrate was carried out, and it executed community analysis and ESB index calculation and also carried out twinspan, MDS and correlation analysis. As a result, the collected benthic macroinvertebrate was 1254 individuals with 3 Phylums, 6 Classes, 14 Orders, 35 Families, 52 Genera and 61 Species. Odonata and Coenagreionidae had the highest species and individuals. Dominance Index was 0.252~0.698, Diversity Index was 1.661~2.902, Evenness Index was 0.414~0.724, and Species Richness Index was 1.990~6.224. As a result of community analysis, when correlation analysis was executed, Dominance Index had the opposite tendency with Diversity Index and Evenness Index, which had the same tendency with the previous studies. When ESB Index was calculated, Grade 2 (polluted) had the highest species with 48 species (78.7%). It is determined from the Environmental quality evaluation and saprobity evaluation result according to ESB index that there is a need to revise environmental evaluation system more specifically. As a result of MDS analysis, the subject spots A and D had the highest similarity, and the subject spot E and D had a relatively high similarity. The life environment that is the closest related with species diversity is estimated by the land-use. As for number of Individual, it seems to have the closest relation with inlet, which is to be determined as a characteristics of Palustrine Wetland. Through such investigation, this study is expected to be utilized for various types of habitats including ecological pond and to be utilized for the increase of species diversity in rural areas.

강원도 신갈나무 군락의 우점도 다양성에 관한 연구 (Study of Dominance-Diversity on Quercus mongolica Forests in Kangwon-do)

  • 장규관;송호경
    • 한국환경생태학회지
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    • 제11권2호
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    • pp.160-165
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    • 1997
  • 본 연구는 강원도 오대산, 점봉산, 중왕산 지역의 신갈나무림을 대상으로 우점도 다양성 지수를 조사하였다. 신갈나무 군락은 종다양도 지수가 0.4~1.2, 종풍부도 지수가 2~11, 균재도 지수가 0.6~0.9로 어느 한 값에 치우치지 않는 것으로 나타나 비교적 안정된 상태의 것으로 판단된다. 종서열 중요치 곡선은 모든 군락에서 대수정규분포에 접근하고 있으며, 비교적 기울기가 완만하였다. 그리고 신갈나무-생강나무 군락의 기울기가 비교적 급하게 나타나 균등성이 낮았으며, 신갈나무-까치박달나무 군락의 종서열 중요치 곡선의 기울기가 완만하게 나타나 균등성이 높고 군락의 안정성이 클 것으로 판단된다.

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봄-여름 고창 연안에서 주목망에 어획된 어류의 출현양상 (Appearance Patterns of fish collected by stow net in coastal waters off Gochang from Spring and Summer)

  • 한경호;노성삼;유태식;차상훈;이성훈
    • 한국해양바이오학회지
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    • 제13권2호
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    • pp.66-75
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    • 2021
  • In 2014, fishes caught using stow nets in coastal waters off Gochang from May to October were assessed for appearance patterns. The fishes were caught at four research stations (St.) and were found to comprise 37 species, 18 families, and 7 orders. The dominant species were Thryssa kammalensis, Setipinna tenuifilis, and Sardinella zunasi. To gain a measure of their biodiversity, all species were assessed for their number, richness, diversity, evenness, and dominance. The highest and lowest numbers of total fishes caught were recorded in September (4,819 individuals) and October (828 individuals), respectively. The diversity was the highest in October (H' = 2.478) and lowest in June (H' = 0.880). The evenness index was the highest in October (E = 0.780) and lowest in June (E = 0.343). The richness index was the highest in October (R = 3.424) and lowest in May (R = 1.552). Finally, the dominance index was the highest in June (D = 86.2%) and lowest in October (D = 40.3%).

Bamboo Distribution Map for Planning the Development of Tourism Potential in Boon Pring Andeman Area

  • Farah, Devy Atika;Dharmawan, Agus;Novianti, Vivi
    • 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.

여대생의 식습관과 영양소 섭취상태가 피부상태에 미치는 영향 (Effects of Dietary Habits and Nutrient Intakes on Skin Condition of Female University Students)

  • 조현주;최미자
    • Journal of Nutrition and Health
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    • 제43권3호
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    • pp.233-245
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    • 2010
  • The purpose of this study was to investigate the effects of dietary habits and nutrient intakes on skin condition of female university students. The subjects were 95 female university students in Daegu. This study examined anthropometric measurements, dietary intake, food intake habits and skin condition (moisture, elasticity, sebum (U-zone, T-zone), pores, evenness and melanin pigmentation. The subjects in this study had an average age of 21.4, an average height and weight of 161.2 cm and 52.9 kg, respectively, and the average body mass index (BMI) was 20.3 $kg/m^2$. The means of skin elasticity, pores, evenness, and melanin pigmentation were within the normal range of women in their 20s and the skin moisture state was slightly lower than the normal range, which showed a dry tendency. The sebum in the U-zone and the T-zone was lower than the standard values, which showed less secretion in both areas. The subjects with high nut intake showed a better skin pore state (p < 0.05). Those with a high intake of instant foods showed a sig-nificantly low skin moisture and a significantly higher sebum rate (p < 0.05). The group with high skin elasticity and the group with less melanin pigmentation showed a significantly low animal protein intake (p < 0.05). The group with high skin elasticity also showed a significantly higher vitamin A and niacin intakes as well (p < 0.05). The group with high skin evenness showed a significantly lower animal lipid intake and a significantly higher vitamin E intake (p < 0.05). In addition, those with high skin elasticity and evenness as well as low melanin pigmentation showed a tendency of high intake of antioxidant vitamins, such as vitamin A, carotene, vitamin C or vitamin E. In summary, a moderate intake of plant-based products and also the antioxidant vitamins within such products seems to have a beneficial effect on maintaining a healthy and good skin condition.

여수 연안에서 자망에 어획된 어류의 종조성 및 양적변동 (Fluctuations in abundance and species composition of fishes collected by gill net fisheries in coastal water of Yeosu, Korea)

  • 오성재;한경호;고수진;이성훈;신임수
    • 수산해양기술연구
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    • 제50권4호
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    • pp.633-642
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    • 2014
  • Monthly variation in abundance and species composition of the fishes were investigated based on specimens collected by gill net in coastal water of Yeosu from October, 2009 and February, May, August, 2010. The collected fishes were 1,529 individuals (183,840g) of the total, identified into 6 orders, 16 families and 24 species. The most dominant order fish was Perciformes comprised 9 species, 7 families, and followed Pleuronectiformes comprised 5 species, 3 families, Scorpaeniformes comprised 5 species, 2 families. These 3 orders constituted 81.1% of the total collected fish. During the study, most dominant species was Hexagrammos otakii accounted for 189 individuals (12.4%) of the total, followed by Lateolabrax japonicus 165 individuals (10.8%), Hexagrammos agrammus 154 individuals (10.0%). The fish was collected by a gill net in coastal water of Yeosu from October, 2009 and February, May, August, 2010, the diversity index of the fishes was 2.09~2.66, which was the highest in August, 2010 and the lowest in February, 2010. The evenness index of them was 0.84~0.89, which was the highest in August, 2010 and the lowest in February, 2010 and the richness index of them was 2.02~3.14, which was the highest in October, 2009 and the lowest in February, 2010. The analyzed species diversity index by the each stations was 2.47~2.66 and the evenness index was 0.84~0.90 and the richness index 2.99~3.37. The similarity of community structure per season was very high which was the least in spring and fall. In addition, the community structure was very similar in state 3 and 2 out of each stations.

강원 중부지역 산림 내 나비류 분포에 관한 연구(II) (Distribution of Lepidoptera on Forest Stand in Central Gangwon Area(II))

  • 장석준;최종운;심상준;김종국
    • Journal of Forest and Environmental Science
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    • 제22권1호
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    • pp.58-65
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    • 2006
  • 본 연구는 백두대간에 서식하는 나비목 곤충의 분포를 파악하기 위하여 2005년 7월과 8월에 수행되었다. 총 15과 123속 462개체가 채집되었으며, 점봉산(인제군 인제읍 귀둔리) 15과 63속 166개체, 응복산(홍천군 내면 명계리) 15과 65 속 159개체, 오대산(평창군 도암면 병내리) 9과 40속 137개체가 채집되었다. 조사지역에서 채집된 종들 중 우점하고 있는 5종은 머루박각시 (Ampelophaga rubiginosa) 54개체, 참나무산누에나방 (Antheraea yamamai) 35개체, 솔송나방 (Dendrolimus superans) 27개체, 북방뒷노랑밤나방 (Triphaenopsis jezoensis) 14개체, 얼룩매미나방 (Lymantria monacha) 13개체였다. Shannon(H') 지수와 균등도지수 (J') 는 점봉산 1.52, 0.84, 응복산1.69, 0.91, 오대산 1.37, 0.83, 유사도지수 (QS)는 점봉산과 응복산이 0.28로 다소 높았으며, 점봉산과 오대산이 0.11로 낮게 나타났다.

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금오산에서 산회지와 비산화지의 식물군집구조 비교 (A Comparison of the Plant Community Structures in the Burned and Unburned Areas of Mt Kumo-san)

  • Kim, Woen;Sung, Kyung-Hee
    • The Korean Journal of Ecology
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    • 제19권1호
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    • pp.55-64
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    • 1996
  • This is a report on the recovery of vegetation and secondary succession in the burned area studied from April, 1990 to April. 1991. The forest fire occurred in a part of Mt. $K\v{u}mo-san$ on April, 1986 and the pine forest and its understory vegetation were burned out completely. The floristic compositions of burned (B) and unburned (U) areas were composed of sixty eight and thirty one species (vascular plants), respectively. These species were divided into invaders (47 species), increasers (15 species), deceasers (3 species), neutrals (3 species), and retreaters (10 species) on the basis of summed dominance ratio ($SDR_3$). Biological spectra showed the $H-D_1-R_5-e$ type in both the burned and unburned areas. The species of Lespedeza ($SDR_3$=94.7), Miscanthus (91.95), Festuca (68.33), and Spodiopogon (52.06) were dominant in the burned areas, while the species of Pinus (76.67), Robinia (56.25), Quercus (52.08), and Carex (40.25)were dominant in the unburned area. Dominance index (C) in burned and unburned areas was 0.15 and 0.25, respectively. the index of similarity (CCs) was 0.42. The degree of succession (DS) and species diversity (H) in burned and unburned areas were 675.8, 884.2 and 4.07, 2.05, respectively. The degree of succession in the burned area graduall increased and the burned area was recovered to be simmilar to the unburned area. Evenness index in burned and unburned areas was 0.965 and 0.595, respectively.

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가야산의 저서성 대형무척추동물 섭식기능군 및 서식습성군 분포와 생물학적 수질평가 (Distribution of Functional Feeding and Habitat Trait Groups of Benthic Macroinvertebrates and Biological Evaluation of Water Quality in Gayasan National Park)

  • 문태영;안미순;김형곤;윤춘식;정선우
    • 한국환경과학회지
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    • 제27권6호
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    • pp.383-399
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    • 2018
  • In the present study, the community distribution, functional feeding groups, and habitat groups of the benthic macroinvertebrates from Gayasan National Park were investigated at eight different sites from 2015 to 2016. The correlation between habitat altitude and each group type was analyzed statistically. Biodiversity indices, including dominance, diversity, richness, and evenness indices, were calculated. The results showed a total of 4,216 individual benthic macroinvertebrates were collected, including 4 phyla, 6 classes, 16 orders, 40 families, and 100 species. Gammarus sobaegensis was dominant with 0.141% dominance, and the subdominant species was Epeorus nipponicus with 0.088% dominance. The EPT group(Ephemeroptera, Plecoptera and Tricoptera) accounted for 71.00% of the total species and 67.69% of the total individuals. The number of scraper species was highest, and the number of gathering collector individuals was highest among functional feeding groups. The individual number of scrapers(r=-0.358, p < 0.05) and gathering collectors(r=-0.343, p < 0.05) decreased with increasing altitude. The numbers of species and individuals of clingers and sprawlers were highest among the habitat groups. The individual number of clingers(r=-0.547, p < 0.01) and burrowers(r=-0.331, p < 0.05) significantly decreased with increasing altitude. The diversity and richness indices were higher in St. 3 than in the other sites. The dominance index was highest in St. 2, and the evenness index was highest in St. 7. We evaluated the biological water quality with several known methods, and concluded that ESB(Ecological score of benthic macrovertebrates community) and GPI(Group polution index) were more suitable than KSI(Korean saprobic index) and BMI (Benthic macrovertebrate index) to assess the biological water quality of Gayasan mountain stream water.

낙동강 하구 생태계의 종속영양세균의 군집구조 분석 및 수리학적 분류 (Characterization and Numerical Taxonomy of Heterotrophic Bacterial Community in Naktong Estuarine Ecosystem)

  • 귄오섭;조경제
    • 미생물학회지
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    • 제30권6호
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    • pp.444-449
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    • 1992
  • 낙동강 하구생태계에 분포한 종속영양세균의 환경 변화에 따른 군집구조의 변화를 파악하기 위해 총 858 균주를 분리하여 수리학적 방법에 의해 분석하였다. 종의 다양성(H') 은 1.54-3.49 로, 하구언 건설 전의 수치와 큰 차이가 없었으나, 균등성지수(evenness index)(J') 는 0.31-0.80 으로 감소하였다. Physiological tolerance index 중 수온에 대한 지수(P') 는 수심이 얕은 정점에서, pH 와 염분에 대한 $P_{h}$$P_{s}$ 는 담수와 해수가 교차하는 정점에서 높았다. 우점의 cluster 를 속 (genus) 수준에서 동정한 결과 Aeromonas, Vibrio, Pseudomonas, Acinetobacter-Morexella, Alcaligenes, Flavobacterium, Micrococcaceae, Enterobacteriaceae 등으로 분류되어 하구언 축조 전과 동일한 종류의 세균뷴포를 나타냈으나 그 출현비율은 달랐다. 이와 같은 결과로 미루어 하구언 축조 등에 따른 낙동강 하구역의 환경변화는 분포세균의 종류보다는 생리적 특셩에 영양을 미쳐 특정종의 우점을 나타나게 한 것으로 사료된다.

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