Results 41 to 50 of about 3,255,505 (313)

Population control methods in stochastic extinction and outbreak scenarios.

open access: yesPLoS 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   +2 more
doaj   +1 more source

Impending extinction crisis of the world’s primates: Why primates matter

open access: yesScience Advances, 2017
Impending extinction of the world’s primates due to human activities; immediate global attention is needed to reverse the trend. Nonhuman primates, our closest biological relatives, play important roles in the livelihoods, cultures, and religions of many
Alejandro Estrada   +31 more
semanticscholar   +1 more source

Reduced branching processes with very heavy tails [PDF]

open access: yes, 2007
The reduced Markov branching process is a stochastic model for the genealogy of an unstructured biological population. Its limit behavior in the critical case is well studied for the Zolotarev-Slack regularity parameter $\alpha\in(0,1]$.
Lagerås, Andreas N., Sagitov, Serik
core   +1 more source

Biological and extrinsic correlates of extinction risk in Chinese lizards

open access: yesCurrent Zoology, 2021
Abstract China is a country with one of the most species-rich reptile faunas in the world. However, nearly a quarter of Chinese lizard species assessed by the China Biodiversity Red List are threatened. Nevertheless, to date, no study has explicitly examined the pattern and processes of extinction and threat in Chinese lizards.
Zhong (钟雨茜), Yuxi   +2 more
openaire   +2 more sources

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

open access: yesScience 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   +16 more
semanticscholar   +1 more source

Extinction risk and diversification are linked in a plant biodiversity hotspot. [PDF]

open access: yesPLoS Biology, 2011
It is widely recognized that we are entering an extinction event on a scale approaching the mass extinctions seen in the fossil record. Present-day rates of extinction are estimated to be several orders of magnitude greater than background rates and are ...
T Jonathan Davies   +12 more
doaj   +1 more source

Fluctuations in models of biological macroevolution

open access: yes, 2005
Fluctuations in diversity and extinction sizes are discussed and compared for two different, individual-based models of biological coevolution. Both models display power-law distributions for various quantities of evolutionary interest, such as the ...
Rikvold, Per Arne
core   +1 more source

Mass Extinctions vs. Uniformitarianism in Biological Evolution [PDF]

open access: yes, 1997
It is usually believed that Darwin's theory leads to a smooth gradual evolution, so that mass extinctions must be caused by external shocks. However, it has recently been argued that mass extinctions arise from the intrinsic dynamics of Darwinian evolution.
Bak, P., Paczuski, M.
openaire   +2 more sources

Ecological response to collapse of the biological pump following the mass extinction at the Cretaceous–Paleogene boundary

open access: yes, 2016
. It is commonly accepted that the mass extinction associated with the Cretaceous–Paleogene (K–Pg) boundary (∼ 66 Ma) is related to the environmental effects of a large extraterrestrial impact.
J. Vellekoop   +7 more
semanticscholar   +1 more source

Correlates of extinction risk in Chinese endemic birds

open access: yesAvian Research, 2019
Background China has a relative high degree of endemism of birds due to its large area, diversified topography, and varied climates and habitats. Among the 77 Chinese endemic birds, 29 species are classified as threatened according to the officially ...
Chuanwu Chen   +5 more
doaj   +1 more source

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