尽管在扩大范围边缘的授粉者社区组成中发生了重大变化,但红树林繁殖持续
Mayda Nathan1, Daniel S Gruner1
1Department of Entomology, University of Maryland, College Park, MD 20742, USA.
Annals of botany
|June 30, 2023
概括
黑色红树林 (Avicennia germinans) 种群正在佛罗里达州向北扩张. 尽管在范围边缘的昆虫访问较少,但由于授粉者转移和花产量增加,繁殖仍然很高.
科学领域:
- 生态生态学 生态生态学
- 植物学 植物学
- 气候变化生物学 气候变化生物学
背景情况:
- 在地理范围边缘的植物繁殖对于应对气候变化的分布转移至关重要.
- 生殖成功可能受到授粉者稀缺或非生物压力因素的限制.
- 在动物授粉植物中,使范围扩大成为可能的机制往往不清楚.
研究的目的:
- 为了研究影响黑色红树林 (Avicennia germinans) 在北方范围扩张期间繁殖的植物-授粉者相互作用.
- 评估地理范围边缘的接近如何影响繁殖和授粉者活动.
主要方法:
- 通过度梯度监测Avicennia发芽植物的昆虫游客.
- 测量花粉负载和花粉收到的标记.
- 量化花和花生产. 量化花和花生产.
主要成果:
- 北部地区的花参观量下降了84%,但花粉收到量仍然很高.
- 昆虫游客群体显示出显著的周转率,大型蜜蜂和在北部地区占主导地位.
- 北方的人口表现出增加的花生产和人均更高的生殖产量,具有更大的传播质量.
结论:
- 在范围边界的Avicennia germinans种群中,没有丧失生育能力,从而促进了快速扩张.
- 在扩大范围边缘的昆虫授粉者群体中,可以在不损害花粉接收的情况下发生周转.
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