If you build it, will they come? On the potential ecological and social benefits of assisted tree migration

如果你建造它，他们会来吗？

• 批准号: 549221-2020
• 负责人: Munson, AlisonDale
• 金额: $ 4.4万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=721114
• 关键词: build; will; they; come; potential

Our forests provide irreplaceable benefits and services to Canadians, and demands for these will continue to increase in the next decades. Parallel to increasing needs is a changing climate where climbing temperatures will push the optimal growth conditions of many commercial species northward. The mixedwood forest that straddles much of eastern Canada will respond to these changes and require that we develop adaptation measures to ensure its continued renewal and productivity. Our team of university and government scientists will take advantage of a large, operational-scale demonstration of assisted migration, to develop new knowledge to support provincial and national policies around forest adaptation. In 2019, eight species and three provenances (of each species) analogue to present and future climates, were planted out in mixed species plantations under different silvicultural treatments. We manipulated canopy removal (partial vs complete), control of vegetation competition (control vs no control), and herbivory of large herbivores (exclosure vs no exclosure). With a team of 4 students (3 PhD, 1 MSc), as well as substantial support from the Quebec government, we will answer four fundamental and applied questions about assisted tree migration. What kind of species interactions might be affected by different tree phenology? How will insects and amphibians respond to tree provenances planted outside their range? How will the microbial communities on leaves and roots of seedlings vary according to provenance? How do different forest users such as local communities and professional foresters perceive the assisted migration approach. The answers to these questions will inform new forest management strategies of government agencies across Canada.

我们的森林为加拿大人提供了不可替代的好处和服务，并且在未来几十年内对这些的需求将继续增加。与不断增长的需求并行的是气候的变化，气温的上升将推动许多商业物种的最佳生长条件向北移动。横跨加拿大东部大部分地区的混木林将对这些变化做出反应，并要求我们制定适应措施，以确保其持续更新和生产力。我们的大学和政府科学家团队将利用大规模、业务规模的辅助移民示范，开发新知识，以支持有关森林适应的省级和国家政策。 2019 年，在不同的造林处理下，在混合物种种植园中种植了与当前和未来气候类似的八个物种和三个来源（每个物种）。我们操纵树冠去除（部分与完全）、植被竞争控制（控制与无控制）以及大型食草动物的食草（封闭与不封闭）。在由 4 名学生（3 名博士、1 名硕士）组成的团队以及魁北克政府的大力支持下，我们将回答有关辅助树木迁移的四个基本和应用问题。不同的树木物候可能会影响什么样的物种相互作用？昆虫和两栖动物将如何应对在其活动范围之外种植的树种？幼苗叶子和根部的微生物群落如何根据来源而变化？当地社区和专业林务人员等不同森林使用者如何看待辅助迁移方法。这些问题的答案将为加拿大各地政府机构的新森林管理战略提供信息。