scholarly journals Geological and geochemical factors of aquatic landscapes resistance to anthropogenic influence

2021 ◽  
Vol 872 (1) ◽  
pp. 012006
Author(s):  
V V Dyachenko ◽  
V A Turkin ◽  
V V Vishnevetskaya
2021 ◽  
Vol 9 (5) ◽  
pp. 1050
Author(s):  
Jing Zhu ◽  
Xiang Sun ◽  
Zhi-Dong Zhang ◽  
Qi-Yong Tang ◽  
Mei-Ying Gu ◽  
...  

Endophytic bacteria and fungi colonize plants that grow in various types of terrestrial and aquatic ecosystems. Our study investigates the communities of endophytic bacteria and fungi of halophyte Kalidium schrenkianum growing in stressed habitats with ionizing radiation. The geochemical factors and radiation (at low, medium, high level and control) both affected the structure of endophytic communities. The bacterial class Actinobacteria and the fungal class Dothideomycetes predominated the endophytic communities of K. schrenkianum. Aerial tissues of K. schrenkianum had higher fungal diversity, while roots had higher bacterial diversity. Radiation had no significant effect on the abundance of bacterial classes. Soil pH, total nitrogen, and organic matter showed significant effects on the diversity of root endophytes. Radiation affected bacterial and fungal community structure in roots but not in aerial tissues, and had a strong effect on fungal co-occurrence networks. Overall, the genetic diversity of both endophytic bacteria and fungi was higher in radioactive environments, however negative correlations were found between endophytic bacteria and fungi in the plant. The genetic diversity of both endophytic bacteria and fungi was higher in radioactive environments. Our findings suggest that radiation affects root endophytes, and that the endophytes associated with aerial tissues and roots of K. schrenkianum follow different mechanisms for community assembly and different paradigms in stress response.


2017 ◽  
Vol 19 (2) ◽  
pp. 231-251 ◽  
Author(s):  
Andrew Biro

The market for bottled water is growing and increasingly segmented. How do we explain not just the willingness to pay for a substance (water) that is almost free but also the increasing discernment in a drink generally considered tasteless? We argue that bottled water market segmentation is a leading edge of processes of water commodification, associated with the crisis of Fordism and rise of consumerist capitalism, where the assertion of status through commodity consumption is increasingly necessary. The extensive Ray’s & Stark water menu is analyzed to show how the taste for bottled waters is cultivated. In the menu, references to gustatory sensation are limited. Instead, the tastefulness of water inheres in the distance from anthropogenic influence, made visible through scientific (geological) discourses. The tension between the desire to consume unmediated nature and the scientific abstraction necessary to recognize it reveals the social character of the taste for bottled waters. The highly refined sense of taste that the water menu’s readers are presumed to have is a reflection of consumerist capitalism’s distinctive ways of reproducing socio-economic inequality and metabolizing non-human nature.


2014 ◽  
Vol 41 (23) ◽  
pp. 8429-8437 ◽  
Author(s):  
F. Alexander Haumann ◽  
Dirk Notz ◽  
Hauke Schmidt

1981 ◽  
Vol 11 ◽  
Author(s):  
Hermann Gies

As the thickest and primarily monomineralic saline horizon in the Federal Republic of Germany, investigation of the Zechstein-2-Series, Stalfurt-Halite (Na2) is being emphasized for the final disposal of HLW. This horizon is of particular importance, especially since it is the base of the whole saline formation in northern Germany


2021 ◽  
Vol 100 (5) ◽  
pp. 203-208
Author(s):  
Sh.K. Salikhov ◽  
◽  
D.Z. Alieva ◽  
U.A. Magomedova ◽  
S.О. Abdulkadyrova ◽  
...  

The aim of the study is to determine the role of geochemical factors (the content of Mg, K, Ca, Zn, Pb in soils and natural waters of the plain zone of Dagestan) in the prevalence of essential arterial hypertension (EAH) among the population of children. Materials and methods of research: an observational cross-sectional (one-step) study of the prevalence of EAH in the child population was carried out. The prevalence rates of EAH among children in the plain zone of the Republic of Dagestan are calculated for 100,000 children 0–17 years old, without taking into account gender differences. The content of elements (Mg, K, Ca, Zn, Pb) in the environment (soil, natural waters) was determined by atomic absorption spectroscopy. Results: one-way analysis of variance (One-Way ANOVA) of indicators of the content of metals (Mg, K, Ca, Zn, Pb) in the regions and objects (soils, natural waters) of the study revealed a statistically significant difference in the data (for soils: F=81,06772, p<0,0002; for natural waters: F=58,86451, p<0,00001). The dependence of children's EAH on the content of chemical elements in the objects of the biosphere of Dagestan was determined, which was expressed in an increase in the number of patients with EAH when Pb content exceeded (r=+ 0,576, r=+ 0,759) and with the decrease of Mg (r=–0,668, r=–0,173), K (r=–0,440, r=–0,636), Ca (r=–0,693, r=–0,533), Zn (r=–0,051, r=–0,827) in soils and natural waters. Conclusion: when assessing the pathogenesis of EAH in the population of children, the content of Mg, K, Ca, Zn, Pb in soil and water should be taken into account, since these microelements, entering the body with water and food, affect the elemental status of child's body.


2021 ◽  
Vol 237 ◽  
pp. 104037
Author(s):  
Felipe S. Freitas ◽  
Rosalinda C. Montone ◽  
Eunice C. Machado ◽  
César C. Martins

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