A physics-based model of swarming jellyfish

Gengel, Erik; Kuplik, Zafrir; Angel, Dror L.; Heifetz, Eyal

doi:10.1371/journal.pone.0288378

Cited by 3 publications

(1 citation statement)

References 150 publications

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“…The mechanism for particle sorting introduced herein suggests a new type of physical method for bacterial separation which may be a viable alternative to the classical method of differential centrifugation. We hope this paper will stimulate applications inspired by this mechanism and, more broadly, experimental work examining the effects of background fluid flows on the transport of stochastic swimmers, including macroscopic organisms such as jellyfish [32].…”

Section: Discussionmentioning

confidence: 99%

Dynamics and sorting of run-and-tumble particles in fluid flows with transport barriers

Vilela,

Grados,

Angilella

2024

J. Phys. Complex.

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We investigate the dynamics of individual run-and-tumble particles in a convective flow which is a prototype of fluid flows with transport barriers. We consider the most prevalent case of swimmers denser than the background fluid. As a result of gravity and the effects of the carrying flow, in the absence of swimming the particles either sediment or remain in a convective cell. When run-and-tumble also takes place, the particles may move to upper convective cells. We derive analytically the probability of uprise. Since that probability in a given fluid flow can vary strongly accross species, our findings inspire a purely dynamical mechanism for species extraction in the dilute regime. Numerical simulations support our analytical predictions and demonstrate that a judicious choice of the fluid flow’s parameters can lead to particle sorting with an arbitrary degree of purity.

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Section: Discussionmentioning

confidence: 99%

Dynamics and sorting of run-and-tumble particles in fluid flows with transport barriers

Vilela,

Grados,

Angilella

2024

J. Phys. Complex.

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Attractive and repulsive interactions in the one-dimensional swarmalator model

Hao,

Zhong,

O'Keeffe

2023

Phys. Rev. E

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Key Environmental Impacts along the Mediterranean Coast of Israel in the Last 100 Years

Spanier

Zviely

2022

JMSE

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In the last 100 years, the population of the land of Israel has increased dramatically, accompanied by a very intense and accelerated economic and industrial growth. The objective of the present review is to reveal how these major changes have affected the Mediterranean marine and coastal environment. The present review analyzes the global, regional, and local factors and processes that cause substantial environmental changes affecting a variety of marine habitats and taxa. These include: (1) seawater warming that enhances the considerable introduction and establishment of non-indigenous tropical, i.e., Lessepsian, species; (2) overfishing of native biota that seems to contribute to this process; (3) sea-level rise, associated with global warming, which may threaten the sensitive intertidal abrasion platforms; (4) chemical, noise, and light pollution and marine debris; (5) massive sand mining from the beaches, which caused severe erosion in many coastal sections and was banned in Israel in 1964; (6) extensive dredging in the sea, mainly related to the construction and development of large ports, which can be detrimental for the benthic biota, especially in rocky substrates; and (7) marine structures (harbors, marinas, detached breakwaters) that interfere with the natural pattern of sand transport along the coast and cause morphological changes (sand erosion or accumulation) on nearby beaches and the seabed. Israel’s coast is presently characterized by intense anthropogenic activity and many stakeholders with considerable conflicts between them and with the marine ecosystem. A few environmental impacts have ceased, and others have been reduced considerably, but the extent of many additional types have increased significantly, and new impacts have appeared in recent years. Some environmental impacts are beyond our control, and others can be reduced by proper management, but it is predicted that certain major environmental impacts, such as Lessepsian migration, will continue in the future at enhanced rates.

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A physics-based model of swarming jellyfish

Cited by 3 publications

References 150 publications

Dynamics and sorting of run-and-tumble particles in fluid flows with transport barriers

Dynamics and sorting of run-and-tumble particles in fluid flows with transport barriers

Attractive and repulsive interactions in the one-dimensional swarmalator model

Key Environmental Impacts along the Mediterranean Coast of Israel in the Last 100 Years

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