Results 21 to 30 of about 2,625,869 (258)

Extinction events can accelerate evolution. [PDF]

open access: yesPLoS ONE, 2015
Extinction events impact the trajectory of biological evolution significantly. They are often viewed as upheavals to the evolutionary process. In contrast, this paper supports the hypothesis that although they are unpredictably destructive, extinction ...
Joel Lehman, Risto Miikkulainen
doaj   +1 more source

Phylogenetically clustered extinction risks do not substantially prune the Tree of Life. [PDF]

open access: yesPLoS ONE, 2011
Anthropogenic activities have increased the rate of biological extinction many-fold. Recent empirical studies suggest that projected extinction may lead to extensive loss to the Tree of Life, much more than if extinction were random.
Rakesh K Parhar, Arne Ø Mooers
doaj   +1 more source

Permian-Triassic insect diversity revealed by fossils from China [PDF]

open access: yesBIO Web of Conferences, 2023
Most of the research on Paleoentomology focuses on describing morphology and classification of one species of fossil insects. However, there is little information on the temporal diversity of insects during the Permian and Triassic periods.
Wang Peiran
doaj   +1 more source

The ethics of species extinctions

open access: yesCambridge Prisms: Extinction, 2023
This review provides an overview of the ethics of extinctions with a focus on the Western analytical environmental ethics literature. It thereby gives special attention to the possible philosophical grounds for Michael Soulé’s assertion that the untimely
Anna Wienhues   +3 more
doaj   +1 more source

Measurements of Light Extinction by Single Aerosol Particles [PDF]

open access: yes, 2013
A Bessel beam optical trap is combined with continuous wave cavity ringdown spectroscopy to measure the extinction cross section of individual aerosol particles.
Reid, Jonathan P.   +3 more
core   +1 more source

Testing new ideas regarding the nature of interstellar extinction [PDF]

open access: yes, 2023
openStudy of interstellar extinction, from observations to modelling. Application to CCM extinction curves, in-depth analysis of diffuse interstellar bands (DIBs).
CIBODDO, VITTORIO
core  

Survival of small populations under demographic stochasticity [PDF]

open access: yes, 1992
We estimate the mean time to extinction of small populations in an environment with constant carrying capacity but under stochastic demography. In particular, we investigate the interaction of stochastic variation in fecundity and sex ratio under several
Bürger, Reinhard, Gabriel, Wilfried
core   +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

Testing the accuracy of biological attributes in predicting extinction risk

open access: yesPerspectives in Ecology and Conservation, 2020
The assessment of species conservation status traditionally relies on population data. In the absence of such data, biological attributes have been applied to predict the degree of species’ vulnerability. Our study investigated the accuracy of biological
Bruna F. Ceretta   +5 more
doaj   +1 more source

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

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