Results 31 to 40 of about 3,161,795 (320)

The Effect of Geometry on Survival and Extinction in a Moving-Boundary Problem Motivated by the Fisher-KPP Equation [PDF]

open access: yes, 2022
The Fisher-Stefan model involves solving the Fisher-KPP equation on a domain whose boundary evolves according to a Stefan-like condition. The Fisher-Stefan model alleviates two practical limitations of the standard Fisher-KPP model when applied to biological invasion.
arxiv   +1 more source

Blunted Glucocorticoid Responsiveness to Stress Causes Behavioral and Biological Alterations That Lead to Posttraumatic Stress Disorder Vulnerability

open access: yesBiological Psychiatry, 2023
BACKGROUND Understanding why only a subset of trauma-exposed individuals develop posttraumatic stress disorder (PTSD) is critical for advancing clinical strategies.
S. Monari   +9 more
semanticscholar   +1 more source

The Intensification of Prolonged Cooling Climate-Exacerbated Late Ordovician–Early Silurian Mass Extinction: A Case Study from the Wufeng Formation–Longmaxi Formation in the Sichuan Basin

open access: yesJournal of Marine Science and Engineering, 2023
The Late Ordovician–Early Silurian period was a significant transitional phase in geological history and has garnered global interest. This study focuses on the black shale series of the Wufeng Formation–Longmaxi Formation of the Upper Ordovician–Lower ...
Zhibo Zhang   +5 more
doaj   +1 more source

Extinction in a branching process: Why some of the fittest strategies cannot guarantee survival [PDF]

open access: yes, 2013
The fitness of a biological strategy is typically measured by its expected reproductive rate, the first moment of its offspring distribution. However, strategies with high expected rates can also have high probabilities of extinction. A similar situation
Klaere, Steffen, Sawaya, Sterling
core   +2 more sources

The advantage of being slow: the quasi-neutral contact process [PDF]

open access: yes, 2017
According to the competitive exclusion principle, in a finite ecosystem, extinction occurs naturally when two or more species compete for the same resources.
de Oliveira, Marcelo Martins   +1 more
core   +6 more sources

Biologically inspired near extinct system reconstruction [PDF]

open access: yes13th IEEE International Conference on BioInformatics and BioEngineering, 2013
Recovery software system operations from a state of extensive damage without human intervention is a challenging problem as it may need to be based on a different infrastructure from the one that the system was originally designed for and deployed on (i.e., computational and communication devices) and significant reorganization of system ...
Dimitrios I. Fotiadis   +4 more
openaire   +2 more sources

Biological diversity and probability of local extinction of ecosystems [PDF]

open access: yesFunctional Ecology, 2000
Abstract1. With a mathematical model, we demonstrate that two principle components of biological diversity have antagonistic effects on the probability of ecosystem functioning (i.e. on ecosystem reliability, sensuNaeem 1998). Increasing the number of functionally analogous species in the system is shown to enhance reliability, while increasing the ...
Nijs, Ivan, Impens, Ivan
openaire   +3 more sources

Behavioral Correlates of Primates Conservation Status: Intrinsic Vulnerability to Anthropogenic Threats. [PDF]

open access: yesPLoS ONE, 2015
Behavioral traits are likely to influence species vulnerability to anthropogenic threats and in consequence, their risk of extinction. Several studies have addressed this question and have highlighted a correlation between reproductive strategies and ...
Amélie Christelle Lootvoet   +2 more
doaj   +1 more source

Extinction in neutrally stable stochastic Lotka-Volterra models [PDF]

open access: yes, 2012
Populations of competing biological species exhibit a fascinating interplay between the nonlinear dynamics of evolutionary selection forces and random fluctuations arising from the stochastic nature of the interactions.
Dobrinevski, A., Frey, E.
core   +2 more sources

Utopia without us?

open access: yesEsboços, 2021
As the prospect of self-authored human extinction increasingly appears as a plausible scenario of human futures, a growing number of efforts aim at comprehending it as the prospect of the world without us.
Zoltán Boldizsár Simon
doaj   +1 more source

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