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| http://dx.doi.org/10.1080/15265161.2022.2088894 | DOI Listing |
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Ecological diversification in sexual and asexual lineages.
Sci Rep
December 2024
Department of Fish Ecology and Evolution, Swiss Federal Institute of Aquatic Science and Technology (EAWAG), Kastanienbaum, Switzerland.
The presence or absence of sex can have a strong influence on the processes whereby species arise. Yet, the mechanistic underpinnings of this influence are poorly understood. To gain insights into the mechanisms whereby the reproductive mode may influence ecological diversification, we investigate how natural selection, genetic mixing, and the reproductive mode interact and how this interaction affects the evolutionary dynamics of diversifying lineages.
View Article and Find Full Text PDFAbortion access barriers shared in "r/abortion" after : a qualitative analysis of a Reddit community post- decision leak in 2022.
Sex Reprod Health Matters
December 2024
Professor, Department of Obstetrics, Gynecology & Reproductive Science, University of California, San Francisco, Oakland, CA, USA.
With drastic changes to abortion policy, the months following the leak and subsequent decision in 2022 were a uniquely uncertain and difficult time for abortion access in the United States. To understand experiences of challenges to abortion access during that time, we used a hybrid inductive and deductive thematic coding approach to analyse descriptions of barriers and their impacts shared in an abortion subreddit (r/abortion). A simple random sample of 10% of posts was obtained from those shared from 02 May 2022 through 23 December 2022; comments were purposively sampled during the coding process.
View Article and Find Full Text PDFCancer Care in Post-Roe America: How Do We Move Forward?
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University of California San Diego, La Jolla, CA, USA.
In 2022, the Supreme Court overturned Roe v. Wade in the case of Dobbs v. Jackson Women's Health Organization.
View Article and Find Full Text PDFMega El Niño instigated the end-Permian mass extinction.
Science
September 2024
School of Geographical Sciences, University of Bristol, Bristol BS81SS, UK.
The ultimate driver of the end-Permian mass extinction is a topic of much debate. Here, we used a multiproxy and paleoclimate modeling approach to establish a unifying theory elucidating the heightened susceptibility of the Pangean world to the prolonged and intensified El Niño events leading to an extinction state. As atmospheric partial pressure of carbon dioxide doubled from about 410 to about 860 ppm (parts per million) in the latest Permian, the meridional overturning circulation collapsed, the Hadley cell contracted, and El Niños intensified.
View Article and Find Full Text PDFFormation of the Atlantic Meridional Overturning Circulation lower limb is critically dependent on Atlantic-Arctic mixing.
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Department of Meteorology, Stockholm University, Stockholm, Sweden.
Deep-water formation in the eastern Subpolar North Atlantic Ocean (eSPNA) and Nordic Seas is crucial for maintaining the lower limb of the Atlantic Meridional Overturning Circulation (AMOC), of consequence for global climate. However, it is still uncertain which processes determine the deep-water formation and how much Atlantic and Arctic waters respectively contribute to the lower limb. To address this, here we used Lagrangian trajectories to diagnose a global eddy-resolving ocean model that agrees well with recent observations highlighting the eSPNA as a primary source of the AMOC lower limb.
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