1 Table of Contents: “... -- Central Asia -- The American Continent -- The United States of America -- Peru and Bolivia -- Argentina...”

2 Table of Contents: “...) and Usnea sulphurea (Continental Antarctic) -- Photosynthesis, Water Relations and Thallus Structure...”

3 “... in continental carbon balance...”

4 “... as the tasks of conservation. Detailed reports from the different continents provide a comprehensive diagnosis...”

5 “..., even though the latter cover a much larger area than the continents. Soils themselves are complex...”

6 “... has specifically focused on 90 tropical countries as one group and on three subgroups by continents...”