At the close of the year 1900, motor vehicle registrations throughout the United States totaled 8000. These vehicles rode on unpaved and often dusty country roads. The only problem of traffic was an occasional pedestrian or a frightened horse or cow frenzied by the roar of this new creature. Today more than 82,000,000 registrations, representing 50% of the world's automobiles, are recorded in this country. In 1963 these vehicles traveled 798 billion miles over newly constructed modern highways, expressways, freeways, quickways, and thru- ways, as well as improved rural and urban roads and...
At the close of the year 1900, motor vehicle registrations throughout the United States totaled 8000. These vehicles rode on unpaved and often dusty c...
The last 25 years have seen significant advances in our understanding of the mycorrhizal fungi that colonize most of the world's plants, and the mycorrhizal networks that form and extend into the soil beyond plant roots. In addition to a thorough review of recent research on mycorrhizal networks, this book provides readers with alternative perspectives. The book is organized into three sections: Network Structure, Nutrient Dynamics, and the Mutualism-Parasitism Continuum.
Chapter 1 addresses the specificity of ectomycorrhizal symbionts and its role in plant communities, and provides...
The last 25 years have seen significant advances in our understanding of the mycorrhizal fungi that colonize most of the world's plants, and the my...
