Feasibility in MacArthur’s consumer-resource model

Theoretical Ecology, Journal Year: 2023, Volume and Issue: 16(3), P. 225 - 238

Published: July 22, 2023

Language: Английский

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Lotka–Volterra model with Allee effect: equilibria, coexistence and size scaling of maximum and minimum abundance

Journal of Mathematical Biology, Journal Year: 2023, Volume and Issue: 87(6)

Published: Nov. 6, 2023

Language: Английский

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Feasibility in MacArthur’s Consumer-Resource Model

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: April 17, 2023

Abstract Finding the conditions that ensure survival of species has occupied ecologists for decades. Theoretically, mechanistic models such as MacArthur’s consumer-resource model, most efforts have concentrated on proving stability an equilibrium assuming it is feasible, but overlooking its feasibility. Here we address this gap by finding range lead to a feasible model and study how changes in system’s structural parametric properties affect those ranges. We characterize relationship between loss feasibility increase complexity (measured richness connectance) power law can be extended random competition matrices. Focusing pool consumers, find while entire system decreases with size pool, expected fraction consumers increases —safety consumer numbers. resources, if resources grow linearly, larger lower —danger resource However, logistically, pattern reversed sublinear feasibility, been previously reported experimental work. This work provides testable predictions systems gateway exploring other models.

Language: Английский

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Species interactions drive continuous assembly of freshwater communities in stochastic environments

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 23, 2023

Abstract Understanding the factors driving maintenance of long-term biodiversity in changing environments is essential for improving restoration and sustainability strategies face global environmental change. Biodiversity shaped by both niche stochastic processes, however strength deterministic processes unpredictable regimes highly debated. Since communities continuously change over time space — species persist, disappear or (re)appear understanding drivers gains losses from should inform us about whether dominate community dynamics. Applying a nonparametric causal discovery approach to 30-year series containing annual abundances benthic invertebrates across 66 locations New Zealand rivers, we found strong asynchronous relationship between directly driven predation indicating that Despite nature these system, noise was only indirectly related through altering life history trait distribution. Using birth-death framework, demonstrate negative can not emerge without processes. Our results showed even systems are dominated variability, interactions drive continuous assembly.

Language: Английский

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Species interactions drive continuous assembly of freshwater communities in stochastic environments

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Sept. 18, 2024

Language: Английский

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