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植物 - 昆虫协会对古世 - 世变暖的反应
1Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560-0121, USA. Department of Entomology, University of Maryland, College Park, MD 20742-4454, USA.
Science (New York, N.Y.)
|June 26, 1999
概括
全球气温上升增加了昆虫食草的增加,从古世 - 世变暖时期,昆虫对化石植物的损害增加证明了这一点. 这项研究证实,昆虫的草食性会随着温度的升高而加剧.
科学领域:
- 古生物学的古生物学
- 古植物学是古植物学.
- 昆虫与植物的相互作用
背景情况:
- 现代昆虫的草食和多样性随着度的下降而增加.
- 这表明温度和草食强度在恒定的度之间存在正相关性.
研究的目的:
- 为了研究过去全球变暖对昆虫草食的影响.
- 为了测试温度上升导致昆虫食草率上升的预测.
主要方法:
- 在怀俄明州,分析了化石叶子上的昆虫损伤,这些叶子来自旧生代晚期和新生代早期.
- 在古老世末期和古老世初期植物间的草食水平的比较.
主要成果:
- 早期的欧世植物与晚期的旧世植物相比,表现出更大的昆虫损害多样性和频率.
- 树家族 (Betulaceae) 经历了最高水平的草食.
- 有证据表明,在这段时间内,草食动物组成发生了变化.
结论:
- 化石证据支持预测,气温上升会增加昆虫草食.
- 全球变暖事件显著影响植物昆虫动态.
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