1. Mycorrhiza Specificity: Its Role in the Development and Function of Common Mycelial Networks -- 2. Functional Significance of Anastomosis in Arbuscular Mycorrhizal Networks -- 3. The Importance of Ectomycorrhizal Networks for Nutrient Retention and Carbon Sequestration in Forest Ecosystems -- 4. Nutrient Dynamics in Arbuscular Mycorrhizal Networks -- 5. Resource Transfer Between Plants Through Ectomycorrhizal Fungal Networks -- 6. The Role of Ectomycorrhizal Networks in Seedling Establishment and Primary Succession -- 7. Facilitation and Antagonism in Mycorrhizal Networks -- 8. Interspecific Mycorrhizal Networks and Non-Networking Hosts: Exploring the Ecology of the Host Genus Alnus -- 9.  Experimentally Testing Effects of Mycorrhizal Networks On Plant Ecology and Distinguishing Among Mechanisms -- Index.