Results 21 to 30 of about 4,438 (207)

Hopf-transcritical bifurcation in toxic phytoplankton–zooplankton model with delay

open access: hybridJournal of Mathematical Analysis and Applications, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yong Wang, Hongbin Wang, Weihua Jiang
openalex   +3 more sources

Complicate dynamical properties of a discrete slow-fast predator-prey model with ratio-dependent functional response [PDF]

open access: yesScientific Reports, 2023
Using a semidiscretization method, we derive in this paper a discrete slow-fast predator-prey system with ratio-dependent functional response. First of all, a detailed study for the local stability of fixed points of the system is obtained by invoking an
Xianyi Li, Jiange Dong
doaj   +2 more sources

Multivariate signals of population collapse in a high‐throughput ecological experiment [PDF]

open access: yesEcology, Volume 106, Issue 9, September 2025.
Abstract Anticipating population declines is a crucial goal of conservation ecology. Recent conceptual work suggests that populations facing growing stressors should exhibit sequential shifts in behavior, morphology, and abundance before declining to extinction.
Francesco Cerini   +4 more
wiley   +2 more sources

Stability switching at transcritical bifurcations of solitary waves in generalized nonlinear Schrödinger equations [PDF]

open access: bronzePhysics Letters A, 2013
Linear stability of solitary waves near transcritical bifurcations is analyzed for the generalized nonlinear Schroedinger equations with arbitrary forms of nonlinearity and external potentials in arbitrary spatial dimensions. Bifurcation of linear-stability eigenvalues associated with this transcritical bifurcation is analytically calculated.
Jianke Yang
openalex   +5 more sources

Functional Shift-Induced Degenerate Transcritical Neimark–Sacker Bifurcation in a Discrete Hypercycle

open access: greenInternational Journal of Bifurcation and Chaos
In this paper, we investigate the impact of functional shifts in a time-discrete cross-catalytic system. We use the hypercycle model considering that one of the species shifts from a cooperator to a degrader. At the bifurcation caused by this functional shift, an invariant curve collapses to a point [Formula: see text] while, simultaneously, two fixed
Ernest Fontich   +3 more
openalex   +5 more sources

Exploring chaos and bifurcation in a discrete prey–predator based on coupled logistic map [PDF]

open access: yesScientific Reports
This research paper investigates discrete predator-prey dynamics with two logistic maps. The study extensively examines various aspects of the system’s behavior.
Mohammed O. Al-Kaff   +3 more
doaj   +2 more sources

Dynamics of a Discrete Leslie–Gower Model with Harvesting and Holling-II Functional Response

open access: yesMathematics, 2023
Recently, Christian Cortés García proposed and studied a continuous modified Leslie–Gower model with harvesting and alternative food for predator and Holling-II functional response, and proved that the model undergoes transcritical bifurcation, saddle ...
Chen Zhang, Xianyi Li
doaj   +1 more source

Dynamical analysis of an aquatic amensalism model with non-selective harvesting and Allee effect

open access: yesMathematical Biosciences and Engineering, 2021
In this paper, in order to explore the inhibition mechanism of algicidal bacteria on algae, we constructed an aquatic amensalism model with non-selective harvesting and Allee effect.
Huanyi Liu   +5 more
doaj   +1 more source

More complex dynamics in a discrete prey-predator model with the Allee effect in prey

open access: yesMathematical Biosciences and Engineering, 2023
In this paper, we revisit a discrete prey-predator model with the Allee effect in prey to find its more complex dynamical properties. After pointing out and correcting those known errors for the local stability of the unique positive fixed point $ E_*, $
Mianjian Ruan, Xianyi Li, Bo Sun
doaj   +1 more source

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