Extending the concept of entropy-negentropy for the assessment of ecological dominance and diversity at alpha, beta and gamma levels

Kumar, Vinod; Thukral, Ashwani Kumar; Sharma, Anket; Bhardwaj, Renu

doi:10.1080/24749508.2021.1923270

Cited by 5 publications

(4 citation statements)

References 31 publications

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“…There are two indexes widely used in analysis: alpha (α) diversity and beta (β) diversity. Alpha (α) diversity presents the mean species diversity in sites or habitats at a local scale [56], and beta (β) diversity indicates the variation in community compositions [56]. By performing 16S rRNA gene sequencing on fecal samples, most of the existing studies have demonstrated that α diversity experiences a dramatical decrease in the SD group compared with the control group, while β diversity displays different outcomes.…”

Section: The Broken Homeostasis Of Gut Microbiota Caused By Sdmentioning

confidence: 99%

Sleep Deprivation and Gut Microbiota Dysbiosis: Current Understandings and Implications

Sun

Fang

Wang

et al. 2023

IJMS

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Gut microbiota comprises the microbial communities inhabiting our gastrointestinal (GI) tracts. Accordingly, these complex communities play a fundamental role in many host processes and are closely implicated in human health and diseases. Sleep deprivation (SD) has become increasingly common in modern society, partly owing to the rising pressure of work and the diversification of entertainment. It is well documented that sleep loss is a significant cause of various adverse outcomes on human health including immune-related and metabolic diseases. Furthermore, accumulating evidence suggests that gut microbiota dysbiosis is associated with these SD-induced human diseases. In this review, we summarize the gut microbiota dysbiosis caused by SD and the succedent diseases ranging from the immune system and metabolic system to various organs and highlight the critical roles of gut microbiota in these diseases. The implications and possible strategies to alleviate SD-related human diseases are also provided.

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Section: The Broken Homeostasis Of Gut Microbiota Caused By Sdmentioning

confidence: 99%

Sleep Deprivation and Gut Microbiota Dysbiosis: Current Understandings and Implications

Sun

Fang

Wang

et al. 2023

IJMS

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“…Among them, the Chao1 index and ACE index can be used to describe the species abundance of bacteria, while the Shannon index and Simpson index were used to measure the diversity of bacterial community ( Xia and Sun, 2023 ). Compared with the Simpson index, the Shannon index comprehensively takes into account the evenness and richness of the community, and the higher the value is, the greater the diversity is ( Kumar et al., 2023 ). Affected by the species abundance and species evenness in the sample community, under the same species abundance condition, if the species in the community are relatively uniform, the diversity of the community is higher ( Kimbro and Grosholz, 2006 ).…”

Section: Discussionmentioning

confidence: 99%

Beneficial rhizosphere bacteria provides active assistance in resisting Aphis gossypiis in Ageratina adenophora

Yu,

Yang,

Han

et al. 2024

Front. Plant Sci.

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Ageratina adenophora can enhance its invasive ability by using beneficial rhizosphere bacteria. Bacillus cereus is able to promote plant growth and provide a positive feedback effect to A. adenophora. However, the interaction between A. adenophora and B. cereus under the influence of native polyphagous insect feeding is still unclear. In this study, Eupatorium lindleyanum, a local species closely related to A. adenophora, was used as a control, aimed to compare the content of B. cereus in the roots of A. adenophora and rhizosphere soil after different densities of Aphis gossypii feeding, and then investigated the variations in the population of A. gossypii and soil characteristics after the addition of B. cereus. The result showed that B. cereus content in the rhizosphere soil and root of A. adenophora increased significantly under A. gossypii feeding compared with local plants, which also led to the change of α-diversity and β-diversity of the bacterial community, as well as the increase in nitrate nitrogen (NO3–N) content. The addition of B.cereus in the soil could also inhibit the population growth of A. gossypii on A. adenophora and increase the content of ammonium nitrogen (NH4+-N) in the soil. Our research demonstrated that B. cereus enhances the ability of A. adenophora to resist natural enemy by increasing soil ammonium nitrogen (NH4+-N) and accumulating other beneficial bacteria, which means that rhizosphere microorganisms help invasive plants defend themselves against local natural enemies by regulating the soil environment.

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“…У роботі [18] автори розширюють поняття негативної ентропії (негентропії) для вимірювання екологічного домінування і різноманітності на трьох ієрархічних рівнях характеристики спільноти. Негентропія є мірою енергії і дає опуклу криву для бінарної функції негентропії, тоді як ентропія Шеннона дає типову увігнуту криву.…”

Section: аналіз останніх досліджень і публікаційunclassified

Thermodynamic aspects of the systems approach in ecology

Bezsonnyi

Tretyakov

Sherstyuk

et al. 2022

Visnyk of V.N. Karazin Kharkiv National University, Series Geology. Geography. Ecology

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Purpose. research from thermodynamic positions of the properties of ecological systems of various types under the influence of anthropogenic factors. Methods. Analytical-synthetic method, analysis of information sources, entropy analysis. Results. The effect of an anthropogenic factor on the ecosystem will result in a decrease in the antientropy of the components. The response of the ecosystem will be different depending on the strength and duration of the disturbance. With a strong and sufficiently long impact, the antientropy of the components falls while preserving the organization of the ecosystem until the too low level of the antientropy of the components does not include their own regulatory reactions aimed at restraining the fall of the antientropy even to the detriment of the organization of the system. The organization begins to fall. Since the influence is strong enough and does not stop, the regulatory mechanisms of the components are not able to stabilize the antientropy. The process of falling anti-entropy and organization continues, the system is irreversibly going to its demise. With an average strength, but long-term impact, the components manage to stabilize their anti-entropy at some sub-optimal, but acceptable level at the expense of energy reserves while preserving the organization. However, if the influence continues and does not weaken, the components, not being able to return their antientropy to the original optimal level, sooner or later cannot cope with the continuous perturbation, and their antientropy begins to fall again, now together with the organization. With a weak or short-term impact, the components, adapting to new conditions, return the antientropy to the optimal level (with a strong or medium impact, this is possible only after its termination before irreversible changes in the system). In this case, the organization of the system remains constant, since the disturbing action in this case did not lead the ecosystem beyond the effective operation of homeostatic mechanisms. Thus, the critical moment when an anthropogenic factor acts on an ecosystem is the beginning of the fall of its organization, when homeostasis has completely exhausted itself in countering the disturbance, and the ecosystem begins to irreversibly degrade. So, to control the state of the ecosystem exposed to the anthropogenic factor, it is enough to monitor the organization of the system: if it does not decrease, we can talk about relative well-being, but if the organization falls, the ecosystem is on the verge of death, and it is necessary to take measures to save it. However, the periodic and fairly frequent measurement of the organization of the ecosystem is a task, although one that does not cause fundamental difficulties, but is very time-consuming, primarily due to finding the average module of the correlation coefficients of the parameters. Determining the complexity of the ecosystem according to the formula, although associated with certain difficulties associated with finding the number of connections, does not require time-consuming mathematical processing.

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Extending the concept of entropy-negentropy for the assessment of ecological dominance and diversity at alpha, beta and gamma levels

Cited by 5 publications

References 31 publications

Sleep Deprivation and Gut Microbiota Dysbiosis: Current Understandings and Implications

Sleep Deprivation and Gut Microbiota Dysbiosis: Current Understandings and Implications

Beneficial rhizosphere bacteria provides active assistance in resisting Aphis gossypiis in Ageratina adenophora

Thermodynamic aspects of the systems approach in ecology

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