Post-Fire Re-Colonization of Ectomycorrhizal Fungi

该提案的主要目标是确定火灾后菌根真菌如何重新定居宿主松树物种的根部。 真菌对松树家族中所有树木的健康和生长至关重要，但目前对它们如何在火灾后生存和重建自己知之甚少。 大部分研究将在PT进行。雷耶斯国家海滨自然再生主教松林。 研究地点的选择是为了利用最近5100公顷的野火，其中包括几个地区，火灾前的共生真菌群落是详细了解。 具体问题包括：1）火灾后真菌的主要来源是什么？ 2)真菌种类组成如何受到火山灰沉积、树木死亡率和凋落物清除的影响？ 3）真菌接种量对成苗有什么影响？ 增加了解菌根种群的动态应该有重要的影响，我们了解森林动态和造林的做法。

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.