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  1. Article ; Online: The Growth and Physiological Characteristics of the Endangered CAM Plant, Nadopungnan ( Sedirea japonica ), under Drought and Climate Change Scenarios

    Yeong Geun Song / Jung Eun Hwang / Jiae An / Pyoung Beom Kim / Hyeong Bin Park / Hwan Joon Park / Seongjun Kim / Chang Woo Lee / Byoung Doo Lee / Nam Young Kim / Kyeong Cheol Lee

    Forests, Vol 13, Iss 1823, p

    2022  Volume 1823

    Abstract: No natural habitat of Sedirea japonica has been found in Korea for the past 20 years. This study was conducted to provide basic physiological data for the conservation strategy of this endangered plant in response to climate change. Soil fruit daylight ... ...

    Abstract No natural habitat of Sedirea japonica has been found in Korea for the past 20 years. This study was conducted to provide basic physiological data for the conservation strategy of this endangered plant in response to climate change. Soil fruit daylight system (SFDS) chambers were used and four treatment groups (2.6LVPD, 2.6HVPD, 8.5LVPD, and 8.5HVPD) were designed based on the RCP scenario (RCP 2.6, and 8.5) and VPD conditions (low VPD; LVPD, and high VPD; HVPD). Air dryness was induced in the HVPD groups during the daytime by increasing the atmospheric vapor pressure deficit (VPD). There was no significant difference based on the RCP scenario. However, the difference between LVPD and HVPD was considerable. Total CO 2 uptake and transpiration were lower than those of LVPD due to the duration decrease of Phase I in 2.6HVPD and 8.5HVPD. There was a reduction in total biomass, leaf thickness, length, and the number of leaves. ABS/RC, DI 0 /RC, φD 0 , V K , V J , and other chlorophyll fluorescence markers increased. φP 0 , RE 0 /RC, φE 0 , ψE 0 , φR 0 , RC/CS 0 , Sm, N, PI abs , DF abs , SFI abs , and PI abs,Total declined. Daily drought stresses impact the physiological mechanisms occurring at nighttime. The defense mechanisms against drought stress occur by conserving water by controlling the stomata, inactivating the reaction center, and increasing the dissipated energy through heat. In summary, S. japonica is flexible against drought stress.
    Keywords accumulated environmental stress ; CAM plant ; climate change ; endangered species ; scotoactive stomata ; vapor pressure deficit ; Plant ecology ; QK900-989
    Subject code 580
    Language English
    Publishing date 2022-11-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Endangered plant species under differing anthropogenic interventions

    Seongjun Kim / Hwan-Joon Park / Chang Woo Lee / Nam Young Kim / Jung Eun Hwang / Byoung-Doo Lee / Hyeong Bin Park / Jiae An / JuHyoung Baek

    PeerJ, Vol 10, p e

    how to preserve Pterygopleurum neurophyllum in Wondong wetland?

    2022  Volume 14050

    Abstract: Endangered wetland plants are important as the potential keystone species and mediators for plant-soil interactions. Establishing conservation strategies for endangered plants is also prioritized because of the elevating extinction risk by human-induced ... ...

    Abstract Endangered wetland plants are important as the potential keystone species and mediators for plant-soil interactions. Establishing conservation strategies for endangered plants is also prioritized because of the elevating extinction risk by human-induced wetland disturbances. The present study examined the factors controlling the incidence of Pterygopleurum neurophyllum, the endangered wetland plant experiencing severe habitat loss throughout Northeast Asia. Here, P. neurophyllum populations and their surrounding environments were addressed in the last natural Korean habitat to assess the possible influential factors (vegetation coverage, species richness, exotic plant species, coarse rock content, soil bulk density, and soil electroconductivity and pH) under anthropogenic wetland interventions (with or without soil disturbance). Our results showed that P. neurophyllum occurred 6 out of 32 plots in the study area. All P. neurophyllum were found in Miscanthus-dominated area, but preferred microhabitats featuring reduced vegetation coverage, increased species richness, and undisturbed soils under vegetation removal. Multimodel inference also indicated that vegetation coverage (relative importance = 1.00) and coarse rock content (relative importance = 0.70) were the major influential factors for P. neurophyllum population size, and the surviving P. neurophyllum were strictly limited to where both of them were kept lowered. Furthermore, the wetland intervention with soil disturbance had a negative effect on P. neurophyllum by creating the rocky and compacted soil surface as a result of land reclamation treatments. Conversely, the wetland intervention without soil disturbance enhanced the P. neurophyllum incidence by decreasing vegetation coverage of the overcrowding competitive plants. Overall findings reflect that the strategies to counteract habitat loss and manage the overly dense competitive plants should be necessary for conserving P. neurophyllum, as well as other wetland plants threatened by the human-induced ...
    Keywords Conservation ecology ; Influential factor ; Soil compaction ; Threatened species ; Vegetation coverage ; Wetland disturbance ; Medicine ; R ; Biology (General) ; QH301-705.5
    Subject code 580 ; 630
    Language English
    Publishing date 2022-09-01T00:00:00Z
    Publisher PeerJ Inc.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Flora and Vegetation Characteristics of the Natural Habitat of the Endangered Plant Pterygopleurum neurophyllum

    Hwan Joon Park / Seongjun Kim / Chang Woo Lee / Nam Young Kim / Jung Eun Hwang / Jiae An / Hyeong Bin Park / Pyoung Beom Kim / Byoung-Doo Lee

    Diversity, Vol 13, Iss 401, p

    2021  Volume 401

    Abstract: This study analyzed the flora, life form, and vegetation of the Nakdong River wetland. Vegetation analysis was performed on 37 plots using the phytosociological method of the Zürich-Montpellier School. PCA analysis was conducted by using the vegetation ... ...

    Abstract This study analyzed the flora, life form, and vegetation of the Nakdong River wetland. Vegetation analysis was performed on 37 plots using the phytosociological method of the Zürich-Montpellier School. PCA analysis was conducted by using the vegetation data (ground cover of class; 1~9) of 37 plots surveyed by phytosociological method. PCA (Principal Component Analysis) was used to statistically analyze the objectivity of the community classification and the character species. The traditional classification and mathematical statistic methods were used. A total of 82 taxa belonging to 28 families, 65 genera, 72 species, 2 subspecies, and 8 varieties were present in the vegetation of the survey area. The life form was analyzed to be the Th-R 5 -D 4 -e type. The communities were classified into seven communities: Miscanthus sacchariflorus community, Phragmites communis community, Phragmites communis–Carex dispalata community, Ulmus parvifolia community, Zizania latifolia community, Setaria viridis community, and Salix koriyanagi–Salix chaenomeloides community. As a result of PCA analysis, it was classified into seven communities. Seven communities were analyzed, where the most dominant species ( M. sacchariflorus , P. communis , C. dispalata , U. parvifolia , Z. latifolia , S. viridis , S. koriyanagi , S. chaenomeloides ) of each community were examined as character species. Another species is analyzed as Salix koreensis . Of the sixteen M. sacchariflorus communities, Pterygopleurum neurophyllum was present in six plots (A-2 group) but not in ten plots (A-1 group). These two groups showed differences in coverage and the number of occurring species. As for the relative net contribution degree (r-NCD) in the A-2 group, most species showed low r-NCD except for M. sacchariflorus , which showed an r-NCD of 100. The r-NCDs in the A-1 group were as follows: Miscanthus sacchariflorus (100), P. neurophyllum (21.74), and Persicaria perfoliata (10.14). Therefore, P. neurophyllum is difficult to grow in the A-1 group. As a ...
    Keywords auto ecology ; phytosociological method ; lifeform ; ecological traits ; endangered species ; Biology (General) ; QH301-705.5
    Subject code 580
    Language English
    Publishing date 2021-08-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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