scholarly journals Distribution Strategies of Vascular Plants at the Reclaimed Lands at the Saemangum Sea Dike

2021 ◽  
Vol 10 (2) ◽  
Author(s):  
Kyoung Hoon Yang ◽  
Seung Bin Park ◽  
Si Yeon Kim ◽  
Jang-Sam Cho ◽  
Jeom-Sook Lee ◽  
...  
Keyword(s):  
Plant Communities ◽  
Lolium Perenne ◽  
Distribution Patterns ◽  
Scientific Basis ◽  
Distribution Model ◽  
Group Factor ◽  
Reclaimed Land ◽  
Relative Significance ◽  
Artemisia Princeps ◽  
Bidens Frondosa

The distribution of plant communities in the reclaimed land of the southwestern coasts of South Korea, along with the environmental or plant factors, was studied through canonical correspondence analysis (CCA) and the competitor (C), stress tolerator (S), and ruderal (R) (CSR) ecological strategies. The coastal reclaimed land plants were classified into three plant-factor groups in the CCA biplot diagram. Axis1 was correlated with LS, SLA, CH, and FS. Axis 2 was correlated with LDMC, FP, and LDW. The reclaimed landplants were classified into three soil-factor groups in the CCA biplot diagram. First, the group factor was correlated with SAND. Second, the group factor was distributed according to T-N and TOC. Third, the group factor was distributed according to Salinity content. To clarify the relative significance of competition, stress, and disturbance in the distribution process of plant communities, the CSR distribution model was adopted. Sixteen of the 19 species were allocated to the factors related to the ruderals strategies such as R/CR and CR including R/CSR, SR/CSR, and CR/CSR, and SC strategies. They displayed ruderal and competition adaptation strategies reflecting the ecological environment. Seven species showed R/CR (ruderal/competitor-ruderal) strategies; Aeschno meneindica, Chenopodium album var. centrorubrum, Lolium perenne, Lotus corniculatus var. japonicus, Phragmites communis, Portulaca oleracea, and Soncous brachyotus and 6 species showed CR (competitor-ruderal) strategies; Bidens frondosa, Echinochloa crus-galli, Echino chloaoryzicola, Erigeron canadensis, Fimbristy lislongispica and Setaria viridis. The three species with R-related strategies were Artemisia princeps, Lolium perenne, and Trifolium repens. The distribution patterns of the CCA diagrams and CSR triangles may provide a useful scientific basis for protecting and restoring reclaimed lands and their valuable ecosystem services, from the increasing disturbances.

scholarly journals Importance of Biotic and Soil Factors in Determining the Distribution Strategies of Coastal Salt Marsh Plants

2020 ◽  
Vol 9 (2) ◽  
Author(s):  
Dong-Ho Son ◽  
Jeom-Sook Lee ◽  
Da Eun Kim ◽  
Seung Ho Lee ◽  
Sun-Kee Hong ◽  
...  
Keyword(s):  
Salt Marsh ◽  
Plant Communities ◽  
Salt Marshes ◽  
Imperata Cylindrica ◽  
Distribution Model ◽  
Group Factor ◽  
Salicornia Europaea ◽  
Relative Significance ◽  
Salt Marsh Plants ◽  
Coastal Salt Marsh

The distribution of plant communities in the salt marshes of the southwestern coasts of South Korea was studied, along with environmental or plant factors, by canonical correspondence analysis (CCA) and the competitor (C), stress tolerator (S), and ruderal (R) (CSR) ecological strategies. The coastal salt-marsh plants were classified into three plant-factor groups in the CCA biplot diagram. Group 1 was correlated with LS and FP. Group 2 was correlated with CH and SLA, and Group 3 was correlated with LA, LDMC and LDW. The salt-marsh plants were classified into four soil-factor groups in the CCA biplot diagram. First, the group factor was correlated with TN, TOC, and Ca2+. Second, the group factor was distributed according to Mg2+, soil texture as Clay and Silt. Third, the group factor was distributed according to Salinity and Na+ content. Fourth, the group factor was distributed according to Sand content. To clarify the relative significance of competition, stress, and disturbance in the distribution process of plant communities, the CSR distribution model was adopted. The nine species showed CR (competitor-ruderal) strategies: Artemisia fukudo, Artemisia scoparis, Aster tripolium, Atriplex gmelinii, Imperata cylindrica var. koenigii, Salicornia europaea, Suaeda japonica, and Suaeda maritima. The four species with C (competitor) strategies were Artemisia capillaris, Limonium tetragonum, Triglochin maritimum, and Zoysia sinica. Carex scabrifolia and Phragmites communis displayed SC (stress-tolerant-competitor). Both distribution patterns of the CCA diagrams and CSR triangles may provide a useful scientific basis for protecting and restoring salt marshes and their valuable ecosystem services, considering the increasing disturbances.

scholarly journals Spatio-temporal distribution patterns of Plutella xylostella (Lepidoptera: Plutellidae) in a fine-scale agricultural landscape based on geostatistical analysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jian-Yu Li ◽  
Yan-Ting Chen ◽  
Meng-Zhu Shi ◽  
Jian-Wei Li ◽  
Rui-Bin Xu ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Plutella Xylostella ◽  
Agricultural Landscape ◽  
Seasonal Pattern ◽  
Distribution Patterns ◽  
Geostatistical Analysis ◽  
Distribution Model ◽  
Detailed Knowledge ◽  
Fine Scale ◽  
Spatio Temporal

AbstractA detailed knowledge on the spatial distribution of pests is crucial for predicting population outbreaks or developing control strategies and sustainable management plans. The diamondback moth, Plutella xylostella, is one of the most destructive pests of cruciferous crops worldwide. Despite the abundant research on the species’s ecology, little is known about the spatio-temporal pattern of P. xylostella in an agricultural landscape. Therefore, in this study, the spatial distribution of P. xylostella was characterized to assess the effect of landscape elements in a fine-scale agricultural landscape by geostatistical analysis. The P. xylostella adults captured by pheromone-baited traps showed a seasonal pattern of population fluctuation from October 2015 to September 2017, with a marked peak in spring, suggesting that mild temperatures, 15–25 °C, are favorable for P. xylostella. Geostatistics (GS) correlograms fitted with spherical and Gaussian models showed an aggregated distribution in 21 of the 47 cases interpolation contour maps. This result highlighted that spatial distribution of P. xylostella was not limited to the Brassica vegetable field, but presence was the highest there. Nevertheless, population aggregations also showed a seasonal variation associated with the growing stage of host plants. GS model analysis showed higher abundances in cruciferous fields than in any other patches of the landscape, indicating a strong host plant dependency. We demonstrate that Brassica vegetables distribution and growth stage, have dominant impacts on the spatial distribution of P. xylostella in a fine-scale landscape. This work clarified the spatio-temporal dynamic and distribution patterns of P. xylostella in an agricultural landscape, and the distribution model developed by geostatistical analysis can provide a scientific basis for precise targeting and localized control of P. xylostella.

An Experience in Constructing a Qualimetric Assessment of the Significance of Urban Art Objects

2021 ◽  
Vol 18 (2) ◽  
pp. 116-126
Author(s):  
Marina E. Vilchinskaya-Butenko ◽  
Nikolai N. Rozhkov
Keyword(s):  
Pilot Study ◽  
Scientific Basis ◽  
Relative Significance ◽  
Urban Art ◽  
Art Object ◽  
Art Objects ◽  
Emotional Dimension ◽  
Artistic Interpretation ◽  
Methodological Principles ◽  
Necessary And Sufficient

The article attempts to ensure the unity of views on the implementation of urban art projects in local contexts. The paper aims to discuss the results of a pilot study obtained through a comprehensive assessment of the significance of urban art objects using qualimetric scales. The authors selected seven art objects that meet the four requirements: a) the art objects exist in the urban environment at the time of their assessment by experts; b) the art objects have a high communicative potential, that is, they are interesting to the viewer; c) there are discussions in the media and social networks about the prospects for preserving the art objects; d) the sample is heterogeneous. The experimental group included ten experts, both art theorists and practitioners. The experts were asked to evaluate the significance of each of the art objects by ranking them according to eight “rational” and two “emotional” criteria. The existence of consistency of the experts’ opinions was checked using the concordance coefficient. The pilot study showed that the most significant among the rational criteria for evaluating an artwork were technography (the degree of qualitative impact of the art object on the environment, the degree of the work’s conditionality with the context) and iconography (the uniqueness/brightness of the author’s message). The significance of the other principles (of technology and iconology) is considerably lower, which means that they can be ignored when constructing the final assessment by linear convolution. There was also a fairly high relative significance of the two emotional criteria that had been proposed for the experts’ consideration (the emotional dimension of the work in the artist’s experience and the emotional dimension of the work in the viewer’s experience). The scientific novelty of the research is determined by the fact that a systematic approach to assessing the rational aspects of the artistic interpretation of an urban art object makes it necessary and sufficient to rely on the two methodological principles for evaluating an artwork — technography and iconography. When evaluating the emotional aspects of artistic interpretation, it is necessary and sufficient to rely on the emotional dimension of the work in the experience of the artist and the viewer. The results obtained suggest finding an objective scientific basis for regulating the visual culture of public spaces.

Whose truffle is this? Distribution patterns of ectomycorrhizal fungal diversity in T uber melanosporum brûlés developed in multi-host Mediterranean plant communities

2015 ◽  
Vol 17 (8) ◽  
pp. 2747-2761 ◽  
Author(s):  
Elisa Taschen ◽  
Mathieu Sauve ◽  
Adrien Taudiere ◽  
Javier Parlade ◽  
Marc-André Selosse ◽  
...  
Keyword(s):  
Plant Communities ◽  
Fungal Diversity ◽  
Distribution Patterns ◽  
Mediterranean Plant

Classification and distribution patterns of plant communities on Socotra Island, Yemen

2012 ◽  
Vol 16 (1) ◽  
pp. 148-165 ◽  
Author(s):  
Michele De Sanctis ◽  
Achmed Adeeb ◽  
Alessio Farcomeni ◽  
Chiara Patriarca ◽  
Achmed Saed ◽  
...  
Keyword(s):  
Plant Communities ◽  
Distribution Patterns ◽  
Socotra Island

Distribution patterns and changes of aquatic plant communities in Napahai Wetland in northwestern Yunnan Plateau, China

2008 ◽  
Vol 3 (3) ◽  
pp. 338-343 ◽  
Author(s):  
Derong Xiao ◽  
Kun Tian ◽  
Hua Yuan ◽  
Yuming Yang ◽  
Ningyun Li ◽  
...  
Keyword(s):  
Plant Communities ◽  
Aquatic Plant ◽  
Distribution Patterns ◽  
Yunnan Plateau ◽  
Northwestern Yunnan

scholarly journals Analysis of Hydrogeochemical Characteristics and Origins of Chromium Contamination in Groundwater at a Site in Xinxiang City, Henan Province

2021 ◽  
Vol 11 (24) ◽  
pp. 11683
Author(s):  
Wenfang Chen ◽  
Yaobin Zhang ◽  
Weiwei Shi ◽  
Yali Cui ◽  
Qiulan Zhang ◽  
...  
Keyword(s):  
Hexavalent Chromium ◽  
Groundwater Remediation ◽  
Saturation Index ◽  
Shallow Groundwater ◽  
Distribution Patterns ◽  
Scientific Basis ◽  
Henan Province ◽  
Contaminated Site ◽  
Control Mechanisms ◽  
Chromium Contamination

Hexavalent chromium contamination in groundwater has become a very serious and challenging problem. Identification of the groundwater chemical characteristics of the sites and their control mechanisms for remediation of pollutants is a significant challenge. In this study, a contaminated site in Xinxiang City, Henan Province, was investigated and 92 groundwater samples were collected from the site. Furthermore, the hydrogeochemical characteristics and the distribution patterns of components in the groundwater were analyzed by a combination of multivariate statistical analysis, Piper diagram, Gibbs diagram, ions ratio and hydrogeochemical simulation. The results showed that the HCO3-Cl-Mg-Ca type, SO4-HCO3-Na type, and HCO3-Mg-Ca-Na type characterize the hydrogeochemical composition of shallow groundwater and HCO3-Cl-Mg-Ca type, HCO3-Na-Mg type, and HCO3-SO4-Mg-Na-Ca type characterize the hydrogeochemical composition of deep groundwater. Ion ratios and saturation index indicated that the groundwater hydrogeochemical characteristics of the study area are mainly controlled by water–rock action and evaporative crystallization. The dissolution of halite, gypsum and anhydrite, the precipitation of aragonite, calcite and dolomite, and the precipitation of trivalent chromium minerals other than CrCl3 and the dissolution of hexavalent chromium minerals occurred in groundwater at the site. The minimum value of pH in groundwater at the site is 7.55 and the maximum value is 9.26. The influence of pH on the fugacity state of minerals was further investigated. It was concluded that the saturation index of dolomite, calcite, aragonite and MgCr2O4 increases with the increase of pH, indicating that these minerals are more prone to precipitation, and the saturation index of Na2Cr2O7, K2Cr2O7 and CrCl3 decreases with the increase of pH, implying that Na2Cr2O7, K2Cr2O7 and CrCl3 are more prone to dissolution. The saturation index of the remaining minerals is less affected by pH changes. The study can provide a scientific basis for groundwater remediation.

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