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实验性加热对两种亚山草本的花香,展示和奖励的影响

Carrie Wu^1,2, John M Powers^2,3, David Z Hopp^2,4

¹Department of Biology, University of Richmond, Richmond, VA, USA.

Annals of botany

|December 23, 2023

概括

全球变暖改变了花挥发物排放和亚山植物的花蜜产量. 增加的花蜜吸引了授粉者,而减少的种子掠食有利于植物繁殖.

科学领域:

生态生态学生态生态学
植物生物学植物生物学
气候变化研究气候变化研究

背景情况:

花的特征,如挥发性物质,视觉线索和奖励,对于植物与授粉者和食草动物的相互作用至关重要.
全球变暖可以直接影响温度,并间接影响植物资源,可能改变这些花特征.

研究的目的:

为了研究实验性变暖对亚山植物中花和叶子挥发性排放的影响.
评估变暖对花形态,花蜜生产和种子捕食者卵位的影响.

主要方法:

使用开放式室模拟在1-3年内在野外条件下的变暖 (+2-3°C平均值,+6-11°C最大值).
研究了两种亚山伊波莫普西斯物种 (I. aggregata和I. tenuituba) 与不同的授粉者 (蜂鸟和).
监控的花和叶子挥发性排放,花形态,花蜜产量和种子捕食者卵位.

主要成果:

变暖对叶子的挥发性物质没有显著影响,但微妙地改变了花的挥发性物质排放,这种排放取决于物种,地点和年份.
变暖使I.聚合物中的花蜜产量增加了41%,这可能会增加授粉者吸引力.
在I.聚合物中,变暖显著减少了种子捕食者的卵位≥72%.

结论:

植物特征在亚山环境中对温度变化的可塑性有所不同,影响动物的行为,对植物繁殖至关重要.
这些发现强调了长期现场变暖研究的必要性,以了解花挥发物对气候变化的复杂反应.

关键词:

伊波波普西斯聚合物 ssp. 综合数据综合数据伊波波西斯阴管子 ssp. 只有你,你才会有更多的机会.试验性的变暖.花的形态学花的形态学鲜花的气味和花朵的气味.蜜汁和花蜜是不同的.现型性可塑性现型性可塑性种子的掠夺种子掠夺挥发性有机化合物挥发性有机化合物

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