• 제목/요약/키워드: biological diversity

검색결과 1,494건 처리시간 0.023초

山火後 道德山 소나무林의 初期植生回復과 種多樣性 (Early Begetational Recovery and Species Diversity of Pine Forest after Fire in Mt. Todok)

  • Cho, Young-Ho;Woen Kim
    • The Korean Journal of Ecology
    • /
    • 제14권1호
    • /
    • pp.15-23
    • /
    • 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.

  • PDF

A report of 10 unrecorded bacterial species of Korea, isolated from agricultural soil in 2022

  • Oung Bin Lim;Ji Soo Lee;Hyosun Lee;Ki Eun Lee;In Tae Cha;Won Jae Chi;Dong-Uk Kim
    • 환경생물
    • /
    • 제41권3호
    • /
    • pp.215-222
    • /
    • 2023

  • In 2022, research for native prokaryotic species in Korea reported 10 unrecorded bacterial strains affiliated to phyla Actinomycetota, Bacillota, and Pseudomonadota. The strains formed monophyletic clades with the most closely related species (with ≥98.7% sequence similarity) in the 16S rRNA gene sequencing. Among them, four species of the phylum Actinomycetota, two species of the phylum Bacillota, and four species of the phylum Pseudomonadota have not been reported in Korea, suggesting unrecorded species in Korea. Information on strains such as Gram staining reaction, colony and cell morphology, biochemical characteristics, and isolation sources were provided in the species description.

  • https://doi.org/10.11626/KJEB.2023.41.3.215 인용 PDF

Longitudinal Variation of Fish Communities in the Geum River, Korea: Application of the Concept of Beta Diversity and Local Uniqueness

  • Kim, Jeong-Hui;Park, Sang-Hyeon;Baek, Seung-Ho;Hong, Donghyun;Jo, Hyunbin
    • Proceedings of the National Institute of Ecology of the Republic of Korea
    • /
    • 제3권2호
    • /
    • pp.122-128
    • /
    • 2022

  • To present the spatial variation of fish assemblages in the Geum River in Korea, the concept of beta diversity (β-diversity) estimates based on the variance of the community data table was applied. Fish communities and environmental variables were collected from 13 sampling sites along the in mid-low reaches of the River. We calculated the β-diversity and local contribution to beta diversity (LCBD) values at each site depending on the two types of data, 'occurrence' with Jaccard and Sørensen dissimilarity coefficients, and 'abundance' with Hellinger distance. Multivariate and correlation analyses were also performed to determine the relationships between LCBD and other variables, such as community indices and physicochemical and hydrological factors. The β-diversity values of fish communities in the River were estimated as 0.218 and 0.145 for occurrence data table with Jaccard and Sørensen respectively, and 0.268 for abundance data. Similar patterns of LCBD along the sampling sites were detected in two dissimilarity measurements of occurrence table, and LCBD values with abundance data were slightly different. The LCBD values are strongly correlated with community indices, and also suitable for indicating the uniqueness of fish assemblages. However, further research is needed to determine the LCBD value as an indicator of environmental variability.

  • https://doi.org/10.22920/PNIE.2022.3.2.122 인용 PDF