Dissertation Research: Nutrient Translocation Through VA Mycorrhizae & the Effects on Plant Performance & Early Succession under Differential Light in a Lowland Tro

小行星9311079 这个论文改进补助金的目的是检查相对 生长速率、根冠比、净同化和相对物种优势 作为生产力和社区组成的决定因素， 光照、菌根侵染和菌丝转移。一系列的实验将 在个体、种内和种间水平上检查这些因素， 实验室和现场。使用标记磷和 碳将用于监测营养物质从菌根真菌转移到 植物，反之亦然。研究将在史密森热带 森林研究所，以解决真菌在恢复的作用， 退化的热带森林生态系统。 这项研究将获得关于光的复杂相互作用的第一个热带数据， 感染和易位，并将证明这些影响的程度 一个社区中的个体植物生产，以及当地社区的动态。 这些数据对于更好地了解地下生态系统至关重要 以及它如何影响热带地区的自然演替和重新造林。 ***

9311079 Mulkey The purpose of this Dissertation Improvement grant is to examine relative growth rates, root-shoot ratios, net assimilation, and relative species dominance as determinants of productivity and community composition under constraints of light, mycorrhizal infection, and hyphal transfer. A series of experiments will examine these factors at the individual, intraspecific, and interspecific levels in the laboratory and in the field. Field experiments using labeled phosphorus and carbon will be used to monitor transfer of nutrients from mycorrhizal fungi to plants and vice versa. Studies will be conducted at the Smithsonian Tropical Forest Research Institute to address the role of fungi in the restoration of degraded tropical forest ecosystems. %%% This study will obtain the first tropical data on the complex interactions of light, infection, and translocation, and will demonstrate the extent to which these affect individual plant production in a community, as well as local community dynamics. These data are critical for a better understanding of the belowground ecosystem and how it affects natural succession and reforestation in the tropics. ***