Results 41 to 50 of about 3,161,795 (320)

Continental weathering and recovery from ocean nutrient stress during the Early Triassic Biotic Crisis

Communications Earth & Environment, 2022
Following the latest Permian extinction, nutrient availability from enhanced continental weathering enabled biological recovery in the ocean, according to K-Ar dating of clay minerals and nitrogen isotope analyses from high northern latitudes.
Jochen Knies, Jasmin Schönenberger, Horst Zwingmann, Roelant van der Lelij, Morten Smelror, Per Erik Vullum, Marco Brönner, Christoph Vogt, Ola Fredin, Axel Müller, Stephen E. Grasby, Benoit Beauchamp, Giulio Viola   +12 more
doaj   +1 more source

Volcanogenic Dark Matter and Mass Extinctions [PDF]

Astropart.Phys.8:317-320,1998, 1996
The passage of the Earth through dense clumps of dark matter, the presence of which are predicted by certain cosmologies, would produce large quantities of heat in the interior of this planet through the capture and subsequent annihilation of dark matter particles. This heat can cause large-scale volcanism which could in turn have caused the extinction
arxiv   +1 more source

Biological Extinction and Climate Change [PDF]

, 2020
What are the current dimensions of biological diversity? Taxonomists have described approximately two million species of eukaryotic organisms. Many more remain unknown, and the global total may approximate 12 million species or more. Generally, for the past 65 million years, the rate of extinction of these species appears to have been ~0.1 extinctions ...
openaire   +1 more source

Extinction time distributions of populations and genotypes [PDF]

arXiv, 2023
In the long run, the eventual extinction of any biological population is an inevitable outcome. While extensive research has focused on the average time it takes for a population to go extinct under various circumstances, there has been limited exploration of the distributions of extinction times and the likelihood of significant fluctuations. Recently,
arxiv  

Phylogenetics and biogeographic approaches to the study of extinction: from timetrees to patterns of biotic assemblage

Frontiers in Genetics, 2016
Global climate change and its impact on biodiversity levels have made extinction a relevant topic in biological research. Yet, until recently, extinction has received less attention in macroevolutionary studies than speciation; the reason is the ...
Isabel eSanmartin, Andrea S. Meseguer
doaj   +1 more source

Extinction and dawn of the modern world in the Carnian (Late Triassic)

Science Advances, 2020
The roots of modern-style ecosystems go back to the Carnian (ca. 233 Ma), a time of global climate change and extinction. The Carnian Pluvial Episode (Late Triassic) was a time of global environmental changes and possibly substantial coeval volcanism ...
Jacopo Dal Corso, Massimo Bernardi, Yadong Sun, Haijun Song, L. Seyfullah, N. Preto, P. Gianolla, A. Ruffell, E. Kustatscher, G. Roghi, A. Merico, S. Hohn, A. Schmidt, A. Marzoli, R. Newton, P. Wignall, M. Benton   +16 more
semanticscholar   +1 more source

Phylogenetic Patterns of Extinction Risk in the Endemic Flora of a Mediterranean Hotspot as a Guiding Tool for Preemptive Conservation Actions

Frontiers in Ecology and Evolution, 2020
Climate change is a major driver of biodiversity decline with pervasive effects in biodiversity hotspots, where many endemic and threatened species thrive. However, the biological drivers of extinction susceptibility remain largely elusive, which hampers
Rafael Molina-Venegas, Ignacio Ramos-Gutiérrez, Ignacio Ramos-Gutiérrez, Juan Carlos Moreno-Saiz, Juan Carlos Moreno-Saiz   +4 more
doaj   +1 more source

Large extinctions in an evolutionary model: The role of innovation and keystone species [PDF]

, 2001
The causes of major and rapid transitions observed in biological macroevolution as well as in the evolution of social systems are a subject of much debate.
Bak, Barabasi, Eigen, Happel, Niesert, Ruoslahti, Smith, Valentine, Watts   +8 more
core   +3 more sources

Population control methods in stochastic extinction and outbreak scenarios.

PLoS ONE, 2017
Adaptive limiter control (ALC) and adaptive threshold harvesting (ATH) are two related control methods that have been shown to stabilize fluctuating populations.
Juan Segura, Frank M Hilker, Daniel Franco   +2 more
doaj   +1 more source

Extinction dynamics from meta-stable coexistences in an evolutionary game [PDF]

Phys. Rev. E 96, 042412 (2017), 2017
Deterministic evolutionary game dynamics can lead to stable coexistences of different types. Stochasticity, however, drives the loss of such coexistences. This extinction is usually accompanied by population size fluctuations. We investigate the most probable extinction trajectory under such fluctuations by mapping a stochastic evolutionary model to a ...
arxiv   +1 more source