Search Results - "Malchow, Horst"
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Vertical mixing and hysteresis in the competition of buoyant and non-buoyant plankton prey species in a shallow lake
Published in Ecological modelling (10-03-2016)“…•Vertical movement and mixing of different plankton species is modeled in a system of ordinary differential equations.•Hysteresis is possible for a certain…”
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The Fokker–Planck law of diffusion and pattern formation in heterogeneous environments
Published in Journal of mathematical biology (01-09-2016)“…We analyze the influence of spatially inhomogeneous diffusion on several common ecological problems. Diffusion is modeled with Fick’s law and the Fokker–Planck…”
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The Allee Effect and Infectious Diseases: Extinction, Multistability, and the (Dis‐)Appearance of Oscillations
Published in The American naturalist (01-01-2009)“…Infectious diseases that affect their host on a long timescale can regulate the host population dynamics. Here we show that a strong Allee effect can lead to…”
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Disease-induced modification of prey competition in eco-epidemiological models
Published in Ecological complexity (01-06-2014)“…•We model modification of intraspecific prey competition by an infectious disease.•The effect on disease spread is investigated in an eco-epidemiological…”
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Spatiotemporal Complexity of Plankton and Fish Dynamics
Published in SIAM review (01-09-2002)“…Nonlinear dynamics and chaotic and complex systems constitute some of the most fascinating developments of late twentieth century mathematics and physics. The…”
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Impact of Parameter Variability and Environmental Noise on the Klausmeier Model of Vegetation Pattern Formation
Published in Mathematics (Basel) (23-11-2017)“…Semi-arid ecosystems made up of patterned vegetation, for instance, are thought to be highly sensitive. This highlights the importance of understanding the…”
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Wave of Chaos: New Mechanism of Pattern Formation in Spatio-temporal Population Dynamics
Published in Theoretical population biology (01-03-2001)“…The dynamics of a simple prey–predator system is described by a system of two reaction- diffusion equations with biologically reasonable non-linearities…”
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An exact solution of a diffusive predator–prey system
Published in Proceedings of the Royal Society. A, Mathematical, physical, and engineering sciences (08-04-2005)“…growth rate is damped by the Allee effect. Using an appropriate change of variables, we obtain an exact solution of the system, which appears to be related to…”
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Spatio-Temporal Pattern Formation in Nonlinear Non-Equilibrium Plankton Dynamics
Published in Proceedings of the Royal Society. B, Biological sciences (22-02-1993)“…Because of the local and global impacts of algae blooms and patchiness on water quality, carbon cycling and climate, models of plankton dynamics are of current…”
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Numerical study of plankton–fish dynamics in a spatially structured and noisy environment
Published in Ecological modelling (01-04-2002)“…The effects of mobile fish schools and noisy zooplankton mortality on the plankton dynamics are described, using a minimal model of the nutrients–plankton–fish…”
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A type IV functional response with different shapes in a predator–prey model
Published in Journal of theoretical biology (21-11-2020)“…•We consider a predator–prey model.•We develop a functional response representing group defense using timescale separation.•The resulting functional response…”
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Taxis-driven pattern formation in a predator-prey model with group defense
Published in Ecological complexity (01-08-2020)“…We consider a reaction-diffusion(-taxis) predator-prey system with group defense in the prey. Taxis-driven instability can occur if the group defense…”
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Coexistence of competitors mediated by nonlinear noise
Published in The European physical journal. ST, Special topics (01-06-2017)“…Stochastic reaction-diffusion equations are a popular modelling approach for studying interacting populations in a heterogeneous environment under the…”
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Invasive competition with Fokker-Planck diffusion and noise
Published in Ecological complexity (01-05-2018)“…Species competition in a fluctuating environment is often modelled with stochastic reaction-diffusion equations. In most cases the movement of individuals is…”
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Oscillations and waves in a virally infected plankton system
Published in Ecological complexity (01-09-2004)Get full text
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Experimental demonstration of chaos in a microbial food web
Published in Nature (30-06-2005)“…Discovering why natural population densities change over time and vary with location is a central goal of ecological and evolutional disciplines. The…”
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The Effects of Stochasticity on Pattern Formation in a Space- and Time-Discrete Predator–Prey System with Strong Allee Effect in the Prey
Published in Bulletin of mathematical biology (01-05-2019)“…The effects of demographic and environmental noise on the vital dynamics and spatial pattern formation are studied for a predator–prey system with strong Allee…”
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On competition of predators and prey infection
Published in Ecological complexity (01-12-2010)“…A class of prey–predator models with infected prey is investigated. Predation terms are either of Holling type II or III, infection is either modelled by mass…”
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