Body size modulates demographic patterns of top predators and their native and invasive prey: A biomathematical approach DOI Creative Commons
William Campillay‐Llanos, Manuel Pinto, Christian Osorio

et al.

Ecología Austral, Journal Year: 2024, Volume and Issue: unknown, P. 159 - 170

Published: March 2, 2024

The arrival of invasive species in native communities impacts the structure and functioning ecosystems, is considered a critical indicator loss biodiversity. Exploring effects new presents challenges addressable through theoretical ecology. Species body size not only shapes trophic relationships, but may also impact predator success facilitate coexistence. However, little attention has been paid to differences on interactions between primary consumers, which could be relevant their coexistence with higher-level predators. Our aim investigate demographic patterns using dynamic, mechanistic model two age-structured consumers (one one native) sharing plant resource preyed upon by common predator. In our model, we highlight three crucial phenomena: structuring into adults juveniles, reproduction occurring discrete pulses, seasonal addition individuals population. Hence, over other relies its reproductive capacity incorporate each cycle. simulations reveal that abundance are influenced size, suggesting changes serve as key indicators shifts community structure.

Language: Английский

Exploring the effects of competition and predation on the success of biological invasion through mathematical modeling DOI Creative Commons
Viviana Rivera-Estay, Fernando Córdova‐Lepe, Felipe N. Moreno‐Gómez

et al.

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

Published: Feb. 22, 2024

Abstract Biological invasions are a major cause of species extinction and biodiversity loss. Exotic predators the type introduced that have greatest negative impact, causing hundreds native species. Despite this, they continue to be intentionally by humans. Understanding causes determine success these is challenge within field invasion biology. Mathematical models play crucial role in understanding predicting behavior exotic different ecosystems. This study examines effect predation competition on an generalist predator predator-prey system. Considering both consumes prey competes with predator, it necessary interplay between competition, as one interspecific interactions may either counteract or contribute impact other biological invasion. Through mathematical model, represented system ordinary differential equations, possible describe four scenarios upon arrival The conditions for each described analytically numerically. numerical simulations performed considering American mink ( Mustela vison ), invasive predator. results highlight importance success.

Language: Английский

Citations

3
Comprehensive investigation of pollution levels and potential bioavailable risks of 7 potentially toxic elements in Qinghai-Tibet soils by using diffusive gradients in thin-films (DGT) DOI Creative Commons
Sha Chen, Bo Chen,

Haoyu Xu

et al.

Environmental Pollutants and Bioavailability, Journal Year: 2024, Volume and Issue: 36(1)

Published: May 23, 2024

Seven potentially toxic elements (PTEs) including Cr, Ni, Cd, Zn, Cu, Pb and As of soil samples from Qinghai-Tibet Plateau (QTP) were measured to assess the degree contaminations. To have a comprehensive understanding PTEs' risks in QTP, single-step nitric acid extraction diffusive gradients thin-films (DGT) technique employed this study for determination total amount as well bioavailable content, respectively. Haibei state Qinghai province was most contaminated sites by PTEs. Behaviors PTEs should be highly concerned they can produce continuous effects ecological systems. High DGT concentrations Zn Cr showed their remarkable available soils. In environment with insufficient organic matter slight pH variations, phosphorus level main contributor affect mobility labile PTEs, especially Ni. Concentration ratio between measurement solution correlation analysis confirmed high bioavailability Pb, leading short-term mixture on systems, while long-term release dynamics found Cu. Results road-side river-side soils QTP evidenced possibly attributed intensive anthropogenic activities traveling industries vehicle driving, whereas natural transportation deposition.

Language: Английский

Citations

2
Integrating metabolic scaling and coexistence theories DOI Creative Commons
Serguei Saavedra,

José Ignacio Arroyo,

Jie Deng

et al.

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

Published: March 1, 2023

Abstract Metabolic scaling theory has been pivotal in formalizing the limits of energy expenditures across individuals as a function body size. Similarly, coexistence provided mathematization expected transformations populations interspecific interactions. Yet, it challenging to explain how patterns observed ecological communities, such inverse relationship between distribution population sizes and mean sizes, can be explained light these expectations. Here, we provide tractable scalable framework study feasibility resource-mediated competing their This integration reveals that -3/4 power dependence carrying capacity on size specifies capacities maximizes species under random environmental perturbations. In line with empirical observations, our predicts leads equilibrium biomasses are independent from size, consequently, abundances inversely related opens new opportunities increase understanding metabolic relationships at level shape processes community level.

Language: Английский

Citations

5
Body size modulates demographic patterns of top predators and their native and invasive prey: A biomathematical approach DOI Creative Commons
William Campillay‐Llanos, Manuel Pinto, Christian Osorio

et al.

Ecología Austral, Journal Year: 2024, Volume and Issue: unknown, P. 159 - 170

Published: March 2, 2024

The arrival of invasive species in native communities impacts the structure and functioning ecosystems, is considered a critical indicator loss biodiversity. Exploring effects new presents challenges addressable through theoretical ecology. Species body size not only shapes trophic relationships, but may also impact predator success facilitate coexistence. However, little attention has been paid to differences on interactions between primary consumers, which could be relevant their coexistence with higher-level predators. Our aim investigate demographic patterns using dynamic, mechanistic model two age-structured consumers (one one native) sharing plant resource preyed upon by common predator. In our model, we highlight three crucial phenomena: structuring into adults juveniles, reproduction occurring discrete pulses, seasonal addition individuals population. Hence, over other relies its reproductive capacity incorporate each cycle. simulations reveal that abundance are influenced size, suggesting changes serve as key indicators shifts community structure.

Language: Английский

Citations

0