Socio-Ecological Networks: A Lens That Focuses Beyond Physics

Ulanowicz, Robert E.

doi:10.3389/fevo.2021.643122

Cited by 10 publications

(3 citation statements)

References 40 publications

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“…His [McLuhan's] example was IBM, which saw its purpose as the manufacture of business machines. It wasn't until its leaders realized they were in the business of processing information that the enterprise began to take off [30].…”

Section: Primacy Of Dissymmetry Over Free Energy An Epistemological I...mentioning

confidence: 99%

Unified Classical Thermodynamics: Primacy of Dissymmetry over Free Energy

Wang

2024

Preprint

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In thermodynamic theory, free energy (i.e., available energy) is the concept facilitating the combined applications of the theory’s two fundamental laws, the first and the second laws of thermodynamics. The critical step was taken by Kelvin, then by Helmholtz and Gibbs— that in natural processes, free energy dissipates spontaneously. With the formulation of the second law of entropy growth, this may be referred to as the dissymmetry proposition manifested in the spontaneous increase of system/environment-entropy towards equilibrium. Because of Kelvin’s pre-entropy-law formulation of free energy, our concept of free energy is still defined, energy-centrally, as body’s internal energy or enthalpy, subtracted by energy that is not available within a framework on the premise of primacy of energy, in which free energy dissipates spontaneously and universally. This primacy of energy is called into question because the driving force to cause a system’s change is the purview of the second law. This paper makes a case for an engineering thermodynamics framework, instead, to be based on the premise of the primacy of dissymmetry over free energy. With Gibbsian thermodynamics undergirded with dissymmetry proposition and engineering thermodynamics with the dissymmetry premise, the two branches of thermodynamics are unified to become classical thermodynamics.

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Section: Primacy Of Dissymmetry Over Free Energy An Epistemological I...mentioning

confidence: 99%

Unified Classical Thermodynamics: Primacy of Dissymmetry over Free Energy

Wang

2024

Preprint

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“…Ecosystem systems can be modeled as a dynamical system by means of a set of ordinary differential equations [39][40][41] that describe the flow of biomass throughout the class of entities that compose the system [42] or more generically, the exchange and consumption of stylized resources [43]. More precisely, this set of elements and connections can be modeled as a network, which behaviors can be chaotic [44].…”

Section: Introductionmentioning

confidence: 99%

Global history, the emergence of chaos and inducing sustainability in networks of socio-ecological systems

Roman,

Bertolotti

2023

PLoS ONE

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In this study, we propose a simplified model of a socio-environmental system that accounts for population, resources, and wealth, with a quadratic population contribution in the resource extraction term. Given its structure, an analytical treatment of attractors and bifurcations is possible. In particular, a Hopf bifurcation from a stable fixed point to a limit cycle emerges above a critical value of the extraction rate parameter. The stable fixed-point attractor can be interpreted as a sustainable regime, and a large-amplitude limit cycle as an unsustainable regime. The model is generalized to multiple interacting systems, with chaotic dynamics emerging for small non-uniformities in the interaction matrix. In contrast to systems where a specific parameter choice or high dimensionality is necessary for chaos to emerge, chaotic dynamics here appears as a generic feature of the system. In addition, we show that diffusion can stabilize networks of sustainable and unsustainable societies, and thus, interconnection could be a way of increasing resilience in global networked systems. Overall, the multi-systems model provides a timescale of predictability (300-1000 years) for societal dynamics comparable to results from other studies, while indicating that the emergent dynamics of networks of interacting societies over longer time spans is likely chaotic and hence unpredictable.

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“…This means that energy flows in biological evolution can be evaluated via such economic criteria as productivity, efficiency, and the costs and benefits (profitability) of various mechanisms for capturing and utilizing energy to build biomass and do work ( Corning, 2022 ), i.e. via the ability to prevail against disturbance, which is defined as ascendency ( Ulanowicz, 1997 , 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Mitochondria in photosynthetic cells: Coordinating redox control and energy balance

Igamberdiev

Bykova

2022

Plant Physiology

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In photosynthetic tissues in the light, the function of energy production is associated primarily with chloroplasts, while mitochondrial metabolism adjusts to balance ATP supply, regulate the reduction level of pyridine nucleotides, and optimize major metabolic fluxes. The tricarboxylic acid cycle in the light transforms into a non-cyclic open structure (hemicycle) maintained primarily by influx of malate and export of citrate to the cytosol. The exchange of malate and citrate forms the basis of feeding redox energy from the chloroplast into the cytosolic pathways. This supports the level of NADPH in different compartments, contributes to the biosynthesis of amino acids, and drives secondary metabolism via the supply of substrates for 2-oxoglutarate dioxygenase and for cytochrome P450-catalyzed monooxygenase reactions. This results in the maintenance of redox and energy balance in photosynthetic plant cells and in the formation of numerous bioactive compounds specific for any particular plant species. The non-coupled mitochondrial respiration operates in coordination with the malate and citrate valves and supports intensive fluxes of respiration and photorespiration. The metabolic system of plants has features associated with remarkable metabolic plasticity of mitochondria that permit the use of energy accumulated in photosynthesis in a way that all anabolic and catabolic pathways become optimized and coordinated.

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Socio-Ecological Networks: A Lens That Focuses Beyond Physics

Cited by 10 publications

References 40 publications

Unified Classical Thermodynamics: Primacy of Dissymmetry over Free Energy

Unified Classical Thermodynamics: Primacy of Dissymmetry over Free Energy

Global history, the emergence of chaos and inducing sustainability in networks of socio-ecological systems

Mitochondria in photosynthetic cells: Coordinating redox control and energy balance

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