https://arolstar52-zhtest.hf.space/index.php?action=history&feed=atom&title=File%3APNAS_cover.gif 2026-07-17T05:58:56Z 在这个wiki上该页的修订历史 MediaWiki 1.43.9 https://arolstar52-zhtest.hf.space/index.php?title=File:PNAS_cover.gif&diff=2562864&oldid=prev 2015-05-11T01:09:24Z

<p></p> <p><b>新页面</b></p><div>== 摘要 ==<br /> Pictured is the aftermath of a snowstorm in the Sonoran Desert. Extreme weather events may become common as a consequence of climate change, challenging organisms&#039; abilities to adapt. Carlos A. Botero et al. modeled various evolutionary adaptation strategies that organisms may employ to protect themselves from thermal stress. The results suggest that although populations can often cope with large changes in environmental conditions, occasionally climate conditions may exceed organisms&#039; ability to adapt and reach an evolutionary tipping point, beyond which the population may collapse. According to the authors, the results also suggest a theoretical framework to explore how variability in environmental conditions may affect the viability of natural populations. See the article by Botero et al. on pages [http://www.pnas.org/content/112/1/184 184-189]. Image by Krieger Conradt (photographer).<br /> <br /> http://www.pnas.org/content/112/1.cover-expansion<br /> <br /> == 授权协议 ==<br /> {{Non-free use rationale<br /> | Article = Proceedings of the National Academy of Sciences<br /> | Description = Cover of [[PNAS]] issue 112/1.<br /> | Source = Image courtesy of Krieger Conradt.<br /> | Portion = Cover image only.<br /> | Low resolution = Yes<br /> | Purpose = The image serves as the primary means of visual identification of PNAS volume 112.<br /> | Replaceability = The image cannot be replaced by a free image.<br /> | Other information = <br /> }}<br /> {{Non-free magazine cover|image has rationale=yes}}</div>

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