"Disturbance, dynamics and resilience of understory plant communities in northern forests"

“北部森林林下植物群落的干扰、动态和恢复力”

• 批准号: 46725-2012
• 负责人: Macdonald, Ellen
• 金额: $ 2.4万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=507008
• 关键词: Disturbance; dynamics; resilience; understory; plant

Disturbance is an important driver of the composition and biodiversity of most plant communities. Understanding the factors that contribute to the ability of a plant community to remain stable in the face of disturbance (resistance) or to recover from disturbance (resilience) is important for sustainable management and restoration of disturbed ecosystems and for conservation of biodiversity. This is particularly true in this era of increasing human disturbance of ecosystems and when phenomena such as climate change may be leading to extreme or unusual disturbance events (e.g., outbreaks of the Mountain Pine Beetle or extreme wildfires). Plant species differ in traits such as shade tolerance, dispersal, and regeneration strategy that will influence their resistance or resilience. When an ecosystem is disturbed, some species will possess traits that allow them to perform better than others. These resistant species that remain on a site after disturbance can have a very important influence on the post-disturbance development of the plant community, and thus on the future biodiversity and ecosystem function.

干扰是大多数植物群落组成和生物多样性的重要驱动因素。了解有助于植物群落在面对干扰时保持稳定（抵抗力）或从干扰中恢复（恢复力）的能力的因素对于受干扰生态系统的可持续管理和恢复以及保护生物多样性非常重要。在这个人类对生态系统的干扰日益增加的时代，以及当气候变化等现象可能导致极端或不寻常的干扰事件（例如，山松甲虫或极端野火的爆发）。植物物种的耐荫性、扩散和更新策略等性状不同，这些性状将影响它们的抗性或恢复力。当生态系统受到干扰时，一些物种将拥有使它们比其他物种表现得更好的特性。这些抗性物种在干扰发生后仍保留在原地，对干扰发生后植物群落的发展，进而对未来的生物多样性和生态系统功能产生重要影响。