"Mobile laboratory for the geography of disturbance: Ecosystem disturbances, interactions, and landscape resilience"

“干扰地理移动实验室：生态系统干扰、相互作用和景观恢复力”

• 批准号: 421803-2012
• 负责人: Krawchuk, Meg
• 金额: $ 3.04万
• 依托单位: Simon Fraser University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=495652
• 关键词: Mobile; laboratory; geography; disturbance; Ecosystem

Ecological disturbances play a significant role in community and ecosystem ecology by re-setting the stage on which plant and animal communities assemble. The objective of this research program is to study the near-term trajectory of northern lodgepole pine forest community structure in British Columbia (BC) when it is exposed to multiple ecological disturbances in succession, a situation known in the ecological literature as compounded disturbance. Ecological resilience theory suggests that compounded disturbances have the potential to nudge ecosystems into different states with altered biodiversity, especially in the context of additional stressors such as climate change. Mechanisms contributing to this change are associated with inter-species variation in growth and reproduction. Vegetation fires and insect outbreaks are natural disturbances that have contributed to forest structure and function across Canada in the near and distant past, but in BC the recent mountain pine beetle (MPB) epidemic is an unprecedented disturbance event that has left a vast area of pine forest prone to compounded disturbance by subsequent fire, forest harvesting, or both.

生态干扰通过重新设置植物和动物群落聚集的舞台，在群落和生态系统生态学中起着重要作用。本研究项目的目的是研究不列颠哥伦比亚省（BC）北部lodgepole松林群落结构在连续暴露于多种生态干扰（生态学文献中称为复合干扰）时的近期轨迹。生态恢复力理论表明，复合干扰有可能推动生态系统进入不同的状态，改变生物多样性，特别是在气候变化等额外压力源的背景下。导致这种变化的机制与物种间生长和繁殖的差异有关。植被火灾和昆虫爆发是自然干扰，在近和遥远的过去对加拿大各地的森林结构和功能做出了贡献，但在不列颠哥伦比亚省，最近的山松甲虫（MPB）流行病是一个前所未有的干扰事件，它使大片松林容易受到随后的火灾、森林采伐或两者的复合干扰。