• Title/Summary/Keyword: QUERCUS DENTATA

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Growth Response, Ecological Niche and Overlap between Quercus variabilis and Quercus dentata under Soil Moisture Gradient (토양수분구배에서 굴참나무와 떡갈나무의 생육반응, 생태 지위 및 중복역)

  • Park, Yeo-Bin;Kim, Eui-Joo
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.26 no.5
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    • pp.47-56
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    • 2023
  • The Quercus variabilis and Quercus dentata, which are said to be relatively drought tolerant among the important genus Quercus that represent deciduous broad-leaved forests in Korea. These two species are widely distributed worldwide in Korea, Japan and China (northern, central, western and eastern subtropical regions). This study compared the ecological niche breadth and overlap according to growth response in 4 soil moisture gradients for the two species and tried to reveal degree of competition and ecological niche characteristics. The ecological niche breadth was 0.977±0.020 for Q. variabilis and 0.979±0.014 for Q. dentata, the latter being slightly wider. And they were similar in 5 traits (stem length, leaf lamina length, leaf width length, stem weight, leaf petiole weight), Q. variabilis was more dominant in 4 traits (leaves number, stem diameter, leaf area, leaf petiole length), and Q. dentata was more dominant in 7 traits (root length, shoot length, plant weight, root weight, shoot weight, leaf weight, leaf petiole weight). The ecological niche overlap for soil moisture between the two species overlapped most in plant structure-related traits and least in photosynthetic organ-related traits such as petiole length. As a result of principal component analysis, degree of competition between the two species for soil moisture was more severe when the soil moisture condition was low than high. Among the measured traits that affect the two-dimensional distribution, 8 traits (Leaves number, Shoot length, Stem length, Plant weight, Root weight, Shoot weight, Stem weight, Leaves weight) were correlated with the factor 1, and 2 traits (Leaf width length, Leaf petiole weight) were correlated with the factor 2 (r>0.5). These results show that the ecological response of the two species to soil moisture is not a few traits involved, but several traits are involved simultaneously.

Sprouting and Sprout Growth of four Quercus Species -At Natural Stands of Querucs mongolica, Q. variabilis, Q. acutissima and Q. dentata Growing at Kwangju-Gun, Kyonggi-Do- (참나무류 4개 수종의 맹아발생력 및 맹아생장량 -경기도 광주지방 신갈나무, 굴참나무, 상수리나무, 떡갈나무 천연임분을 대상으로-)

  • 이돈구;권기철;김영환;김영수
    • Journal of Korea Foresty Energy
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    • v.19 no.2
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    • pp.61-68
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    • 2000
  • This study was carried ou to compare sprouting and sprout growth after the stumps of four Quercus species(Q. mongolica, Q. variabilis, Q. acutissima and Q. dentata) were cut at 20cm from the soil surface in 1996 and 2000 at Mt. Taehwa, Kwangju-Gun, Kyounggi-Do, Korea. The results obtained were as follows: ⑴ Q. mongolica showed most vigorous sprouting, followed by Q. variabilis, Q. dentata, and Q. acutissima. ⑵ The sprouting ability was more vigorous when cut in winter to earl spring than that in summer. ⑶ The initial diameter growth of the sprouts for 2 year after cutting was the highest in Q. acutissima, followed by Q. dentata, Q. mongolica and Q.variabilis, but the growth for 5years after cutting was Q. variabilis > Q. mongolica > Q. dentata > Q. acutissima. ⑷ The height growth of sprouts for 2 years after cutting was the highest in Q. acutissima and followed by Q. mongolica, Q. dentata and Q. variabilis, but the growth for 5 years after cutting was Q. variabilis > Q. mongolica > Q. dentata > Q. acutissima. ⑸ Tending is needed for the stands of Q. variabilis and Q. acutissima to be regenerated successully by sprouting. ⑹ The sprouting ability of Quercus species decreased with incerasing stump diameter, while its diameter growth seemed to increase.

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The Growth Response of Quercus dentata Sapling to the Environmental Gradients Treatment (환경구배처리에 따른 떡갈나무의 생육 반응)

  • Lee, Sang-Kyoung;You, Young-Han;Yi, Hoon-Bok
    • Journal of Life Science
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    • v.20 no.4
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    • pp.597-601
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    • 2010
  • Quercus dentata (Thunb. ex Murray) is a major tree found in dry habitats such as limestone areas of Korea. In order to characterize the ecological traits of Q. dentata, we treated Q. dentata saplings under four gradient levels of major environment factors such as light, soil moisture and nutrients for 5 months in a glass house. We then measured and analyzed growth differences among them. Regarding light, aboveground, belowground and plant biomass were highest at a high gradient and lowest at a low one. The root/shoot ratio was highest at the highest light gradient. Regarding moisture, no measured items were significantly affected by the moisture gradient. Regarding nutrients, aboveground, belowground and plant biomass were the highest at a slightly high gradient and the lowest at a gradient lower or higher than this. The root/shoot ratio was not significantly affected by the nutrient gradient. From these results, it was shown that the growth of Q. dentata was more affected by light and nutrients in the environment than moisture.

Morphological and Phylogenetic Characteristics of Tuber himalayense Collected from Rhizosphere of Quercus dentata in Korea

  • Park, Hyeok;Gwon, Ju-Hui;Lee, Jong-Chul;Kim, Hyun Suk;Seo, Geon-Sik;Eom, Ahn-Heum
    • The Korean Journal of Mycology
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    • v.49 no.1
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    • pp.101-108
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    • 2021
  • We collected the ascomata of Tuber species from the rhizosphere of Quercus dentata in Danyang, Korea. We observed the morphological characteristics of ectomycorrhizal roots and ascomata, and identified the species based on the results of the phylogenetic analysis conducted using the DNA sequences of an internal transcribed spacer, a large-subunit rDNA, translation elongation factor 1-α DNA (TEF1), and MAT. Finally, we identified the fungal species as Tuber himalayense B.C. Zhang & Minter, which has not been recorded previously in Korea. We evaluated the morphological characteristics and conducted phylogenetic analysis of the ascoma and mycorrhiza (associated with Q. dentata) of T. himalayense.

Isolation and Identification of Fusicoccum Species from Quercus dentata

  • Kim, Ki Woo;Kim, Pan-Gi;Lee, Myung-Bo
    • Journal of Korean Society of Forest Science
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    • v.96 no.5
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    • pp.515-519
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    • 2007
  • An imperfect fungus Fusiococcum species was isolated from Quercus dentata. A naturally infected Daimyo oak tree was collected and showed elongate wounds on the stem. The fungal cultures were initially white and cottony, and later turned dark gray. Numerous solitary pycnidia were developed on the medium surface, and typically spherical. Yellowish conidial masses were exuded from pycnidia on the culture plates. Conidial masses were swollen and measured as approximately 100 to $300{\mu}m$ in length. It appeared that conidia were usually held together in globose to oval drops. Conidia were hyaline, single-celled (nonseptate), ellipsoid to fusoid, and measured as approximately $8.0{\times}2.7{\mu}m$. Based on these cultural and morphological characteristics, the fungal isolate was identified as a species of Fusicoccum Corda. To preserve and examine fungal spores exuded from pycnidia on the medium surface, a vapor fixation procedure for scanning electron microscopy was employed in this study. The specimens were exposed to the vapor of 2% (v/v) glutaraldehyde and 2% (w/v) osmium tetroxide each for 2 h. With the vapor fixation we obtained excellent retention of conidial masses in this study. The simple and versatile procedure for demonstrating fungal spores and their exudation from fruiting bodies would facilitate characterization of diverse pathological and environmental isolates as they are in native environments.

Vegetation Structure of Mountain Ridge from Gajisan to Neungdongsan in the Nakdong-jeongmaek (낙동정맥 가지산~능동산 구간의 능선부 식생구조)

  • Kim Dong-Pil;Choi Song-Hyun
    • Korean Journal of Environment and Ecology
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    • v.18 no.3
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    • pp.279-287
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    • 2004
  • To investigate the vegetation structure of the section of Nakdong-jeongmaek from Gajisan to Neungdongsan, fifty plots of 100$m^2$ at ten locations were set up. In accordance with the requirements of DCA(detrended correspondance analysis), which is an ordination technique, the sites were chosen contiguously with each other. The vegetation structure analysis showed Quercus dentata, Pinus densiflora, Q. mongolica to be the major species at canopy layer, Rhododendron schlippenbachii at the layer below the canopy and Tripterygium regelii at the shrub level. Shannon's diversity index was 1.5315~2.4005 per unit area of 500$m^2$. It appeared that the Quercus dentata forest of this ridge section of Nakdong-jeongmaek is about 30 or 40 years old.

Vegetation Structure of Mountain Ridge from Suryeong to Sosagogae in Baekdudaegan, Korea (백두대간 수령-소사고개 구간의 식생구조)

  • 추갑철;김갑태
    • Korean Journal of Environment and Ecology
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    • v.18 no.2
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    • pp.150-157
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    • 2004
  • To investigate the vegetation structure of mountain ridge from Suryeong to Sosagogae, 10 plots(500$m^2$) set up with random sampling method were surveyed. Three groups, Quercus dentata-Fraxinus rhynchophylla community, Quercus mongolica-Fraxinus rhynchophylla community, Quercus mongolica community, were classified by cluster analysis. Quercus mongolica was found as a major woody plant species in the ridge area from Suryeong to Sosagogae. Quercus dentata and Fraxinus rhynchophylla were occupied partly in lower elevation. Species diversity(H') of investigated groups was ranged from 1.7295∼2.6525 and it was similar to that of the ridge area of the national parks in Baekdudaegan. Rare and endangered species, Rhododendron tschonoskii recorded from the list of the Forest Administration distributed between the rocks on the top of the Sambongsan, the long-term habitat monitoring might be required.

A Phytosociological Study of the Quercus Forests in the Lower Montane Zone, Chungbuk Province, Korea (충북지역 산지대 하부의 참나무림에 대한 식물사회학적 연구)

  • Lee, Jang-Soon;Song, Jong-Suk
    • Korean Journal of Environment and Ecology
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    • v.21 no.5
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    • pp.432-441
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    • 2007
  • This study was done to classify the Quercus forests, along with their interpretations of environmental conditions, located in the lower montane zones of Mt. Bakdal, Gyemyeong, Boryeon, Worak, Cheondeung, Joryeong, Gugmang, Buyong, Duta, Malloe, Midong, Gamak, Sirubong, Sipjabong and Yongsanbong in Chungbuk Province, According to the methodology of the Z.-M. schools of phytosociology, the Quercus forests were classified into three communities and two subcommunities A. Quercus variabilis community, A-1. Quercus acutissima subcommunity, A-2. Typical subcommunity; B. Quercus mongolica community; C. Quercus dentata community. These vegetation units were arranged by human interferences and a gradient of environmental complex such as altitudes, and also were corresponded relatively well with the result of cluster analysis(UPGMA), based on the dominance of component species.

Ecological Niche Overlap and Competition between Quercus mongolica and Quercus dentata Under Soil Water Gradient

  • Yeon-ok, Seo;Se-Hee, Kim;Eui-Joo, Kim;Yoon-Seo, Kim;Kyeong-Mi, Cho;Jae-Hoon, Park;Ji-Won, Park;JungMin, Lee;Jin Hee, Park;Byoung-Ki, Choi;Young-Han, You
    • Journal of Forest and Environmental Science
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    • v.38 no.4
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    • pp.229-238
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    • 2022
  • Q. mongolica and Q. dentata are representative species of deciduous forest communities in Korea and are known to be relatively resistant to soil drying condition among Korean oaks. This study attempted to elucidate the degree of competition and ecological niche characteristics of the two species by comparing the ecological responses of the two species according to soil moisture. Competition between Q. mongolica and Q. dentata was shown to be more intense under the conditions where moisture content was low than under the conditions where moisture content was high. As for the ecological niche overlaps of the two species for soil moisture, the structural traits of plant such as stem diameter overlapped the most, the traits of biomass such as petiole weight overlapped the least, and photosynthetic organ-related traits such as leaf width and length overlapped intermediately. When looking at the competition for soil moisture between the two species, it can be seen that Q. mongolica won in nine traits (leaf width length, leaf lamina length, leaf lamina weight, leaf petiole weight, leaf area, leaves weight, shoot weight, root weight, and plant weight) and Q. dentata won in the remaining seven traits (leaf petiole length, leaves number, stem length, stem diameter, stem weight, shoot length, and root length). Competition between the two species for the moisture environment of the soil was shown to be intense under the conditions where moisture content was low. The degree of competition between Q. dentata and Q. mongolica for soil moisture is high under the conditions where soil moisture content is low, and it is judged that Q. mongolica is more competitive for soil moisture than Q. dentata.

A Study on the Relative Decay Durability of Quercus Species (참나무류(類)의 비교내후성(比較耐朽性)에 관한 연구(硏究))

  • Min, Kyeong-Heui;Chung, Dae-Kyo
    • Journal of the Korean Wood Science and Technology
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    • v.15 no.2
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    • pp.16-25
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    • 1987
  • This study was carried out under controlled laboratory conditions in order to investigate the relative durability to decay of 6 Quercus species. The relative durability to decay was expressed by the percentage of weight loss by Lentinus edodes and Pleuratus ostreatus. The results obtained could be summarized as follows: 1. The most decay-resistant parts by L. edodes were heart wood of Q. sarrata TH. and sap wood of Q. aliena BL. and the least decay-resistant parts were heart wood of Q. acutissima C. and sap wood of Q. dentata TH.. 2. The most decay-resistant parts by P. osteratus were heart wood of Q. serrata TH. and sap wood of Q. aliena BL. and the least decay-resistant parts were heart wood of Q. variabilis BL. and sap wood of Q. dentata. TH.. 3. The percentage of weight loss in 6 Quercus species by section-height was not a consistent variation. 4. Putting these results together, Quercus aliena BL, could be regarded as the most decay-resistant by L. edodes and P. osteratus under normal condition among 6 Quercus species.

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