Atmospheric and geologic constraints on the biogeochemistry of North and South American temperate rainforests.

摘要: Terrestrial forest ecosystems develop over time within the constraints of element inputs from atmospheric and geologic sources (e.g., Bormann & Likens, 1979; Gorham, Vitousek, Reiners, Likens et al., 1977). Atmospheric can be defined as “external sources”1 elements because they provide long-term supplies new nutrients to internal ecosystem pools, such vegetation, soil organic matter, cation or anion exchange complexes. Such external nutrient generate on pool sizes processes rates biomass accretion hydrologic loss) terrestrial may affect recovery after disturbance events (resilience). Here we evaluate role for temperate rainforests North South America. Our focus is source elements, which are direct importance in defining biogeochemical environment plant communities have developed evolved.