How to wrinkle a cell: Emerging mechanisms of microridge morphogenesis

Current Opinion in Cell Biology, Год журнала: 2022, Номер 76, С. 102088 - 102088

Опубликована: Май 12, 2022

Язык: Английский

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The role of spatial self-organization in the design of agroforestry systems

PLoS ONE, Год журнала: 2020, Номер 15(7), С. e0236325 - e0236325

Опубликована: Июль 21, 2020

The development of sustainable agricultural systems in drylands is currently a crucial issue the context mitigating outcomes population growth under conditions climatic changes. need to meet growing demand for food, fodder, and fuel, together with hazards due climate change, requires cross-disciplinary studies ways increase livelihood while minimizing impact on environment. Practices agroforestry systems, which herbaceous species are intercropped between rows woody plantations, have been shown mitigate several predicaments Focusing drylands, we address question how can improve performance those areas. As vegetation tends self-organize various patterns, it seems essential explore patterns that tend form their these terms biomass production, resilience droughts, water use efficiency. We two-soil-layers model study relationship deep-rooted shallow vegetation, self-organization different spatial influences systems. focus three generic classes spots, gaps, stripes, assess using common metrics examine droughts. show contrast widespread practice planting alternating rows, is, stripe pattern, hexagonal spot may system's Furthermore, reduce suppression herbs by therefore maintaining higher crop yields. conclude discussing some limitations this significance.

Язык: Английский

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Stationary peaks in a multivariable reaction–diffusion system: foliated snaking due to subcritical Turing instability

IMA Journal of Applied Mathematics, Год журнала: 2021, Номер 86(5), С. 1066 - 1093

Опубликована: Июнь 10, 2021

An activator-inhibitor-substrate model of side-branching used in the context pulmonary vascular and lung development is considered on supposition that spatially localized concentrations activator trigger local side-branching. The consists four coupled reaction-diffusion equations its steady solutions therefore obey an eight-dimensional spatial dynamical system one dimension (1D). Stationary structures within are found to be associated with a subcritical Turing instability organized distinct type foliated snaking bifurcation structure. This behavior turn presence exchange point parameter space at which complex leading eigenvalues uniform concentration state overtaken by pair real eigenvalues; this plays role Belyakov-Devaney system. primary structure periodic spike or peak trains $N$ identical equidistant peaks, $N=1,2,\dots \,$, together cross-links consisting nonidentical, nonequidistant peaks. complicated multitude multipulse states, some also computed, spans range from all way fold $N=1$ state. These states form template physical develop transverse direction 2D.

Язык: Английский

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Impact of climate change on vegetation patterns in Altay Prefecture, China

Mathematical Medicine and Biology A Journal of the IMA, Год журнала: 2024, Номер 41(1), С. 53 - 80

Опубликована: Фев. 29, 2024

Abstract Altay Prefecture, a typical arid region in northwestern China, has experienced the climate transition from warming-drying to warming-wetting since 1980s and attracted widespread attention. Nonetheless, it is still unclear how change influenced distribution of vegetation this region. In paper, reaction–diffusion model climate–vegetation system proposed study impact (precipitation, temperature carbon dioxide concentration) on patterns Prefecture. Our results indicate that tendency growth Prefecture improved gradually 1985 2010. Under current conditions, increase precipitation pattern structures, eventually coverage tends be uniform. Moreover, we found there exists an optimal where spot structure remains stable. Furthermore, concentration induces transition. Based four scenarios Coupled Model Intercomparison Project Phase 6 (CMIP6), used power law range (PLR) predict scenario for sustainable development ecosystem

Язык: Английский

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A new reaction-diffusion-advection model with long-range inhibition for vegetation-desertification pattern-formation as a unified approach

Ecological Modelling, Год журнала: 2024, Номер 492, С. 110722 - 110722

Опубликована: Апрель 26, 2024

Язык: Английский

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