Post-Fire Re-Colonization of Ectomycorrhizal Fungi

火灾后外生菌根真菌的重新定植

• 批准号: 9628852
• 负责人: Thomas Bruns
• 金额: $ 26.5万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-08-15 至 2000-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9628852&HistoricalAwards=false
• 关键词: Post; Fire; Re; Colonization; Ectomycorrhizal

The primary objective of this proposal is to determine how mycorrhizal fungi recolonize the roots of host pine species following fire. The fungi are essential to the health and growth of all trees in the pine family, yet little is currently know about how they survive and re-establish themselves after fire. Most of the research will be conducted at Pt. Reyes National Seashore in naturally regenerating Bishop pine forests. Study sites were selected to take advantage of the recent 5100 hectare wildfire which included several areas where the pre-fire symbiotic fungal community was know in detail. Specific questions to be addressed include: 1) What is the dominant source of post-fire fungi? 2) How is fungal species composition affected by differences in ash deposition, tree mortality, and litter removal? and 3) What effect does fungal inoculum level have on successful seedling establishment? An increased understanding of the dynamics of mycorrhizal populations should have important implications for our understanding of forest dynamics and reforestation practices.

该提案的主要目的是确定菌根真菌如何在火之后重新殖民宿主松树的根部。 这种真菌对于松树家族中所有树木的健康和生长至关重要，但是目前几乎不知道它们在大火后如何生存和重新建立自己。 大多数研究将在PT进行。雷耶斯国家沿海地区天然会再生派恩森林。 选择研究地点以利用最近的5100公顷野火，其中包括几个领域，详细了解了前火共生真菌群落。 要解决的具体问题包括：1）爆炸后真菌的主要来源是什么？ 2）如何受到灰分沉积，树木死亡率和清除垃圾的差异影响的真菌物种组成？ 3）真菌接种水平对成功的幼苗建立有何影响？ 对菌根种群的动态的越来越多的理解对我们对森林动态和造林实践的理解具有重要意义。