叶子的功能特征,昆虫食草,和真菌损伤在早期的欧纪叶子压缩化石,多卢斯山,怀俄明州,怀俄明州
Claudia G Richbourg1, Lily J Jackson2,3, Kevin R Chamberlain2
1Department of Botany, University of Wyoming, Laramie, 82071, WY, USA.
American journal of botany
|May 7, 2025
概括
化石叶子分析显示,昆虫和真菌损伤经常同时发生,叶子静脉密度与多种损伤类型有关. 这项研究增强了对古代植物-昆虫-真菌相互作用的理解. 关键词:化石植物,食草动物,真菌损害,植物特征.
科学领域:
- 古植物学是古植物学.
- 古生态学 古生态学
- 进化生物学 进化生物学
背景情况:
- 草食和真菌损害可以在化石记录中测量.
- 之前的研究很少检查真菌损伤与草食和功能性植物特征一起.
- 了解这些相互作用对于解释过去的生态系统和预测未来植物对气候变化的反应至关重要.
研究的目的:
- 为了介绍和约会Dolus Hill的新化石植物.
- 在温室间隔期间调查真菌损害,昆虫食和叶子功能特征之间的关系.
- 评估植物特征指标在化石损害分析中的有用性.
主要方法:
- 与的放射性同位素约会石,以限制Dolus Hill化石遗址的年龄.
- 鉴定和量化611个欧迪科特叶化石,测量昆虫的食和真菌损害.
- 分析叶子特征 (每面积叶子质量,叶子静脉密度) 和统计建模 (通用线性模型,β回归,费舍尔精确测试) 以确定损伤和特征之间的关系.
主要成果:
- 杜鲁斯山是52.2 ± 0.21万年前的,产生了18种尤迪科特形态物种.
- 在82%的叶子上发现了昆虫损伤,在27%的叶子上发现了真菌损伤;真菌和昆虫损伤的同时发生是显著的.
- 叶子静脉密度与每叶损伤类型的数量呈正相关;每面积的叶子质量与损伤指标没有显著关系.
结论:
- 杜鲁斯山的化石植物提供了新的见解植物真菌相互作用在早期欧气候最佳时期.
- 叶脉密度是评估化石植物损伤的潜在有用的特征指标.
- 这些发现有助于更好地理解当前快速气候变化背景下的植物-真菌-昆虫动态.
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