Edward B. Rastetter

TL;DR: In this article, the imbalance between gross primary production (GPP) and ecosystem respiration (ER) was defined as a measure of the amount of carbon being transferred from one ecosystem to another.

TL;DR: In this paper, soil characteristics and gross rates from 100 studies conducted in forest, shrubland, grassland, and agricultural systems to answer the following questions: What factors appear to be the major drivers for production and consumption of inorganic N as measured by isotope dilution studies? Do rates or the relationships between drivers and rates differ among ecosystem types?

TL;DR: Despite the many groups of organisms capable of fixing N, and the very different ecosystems in which the process is important, it is suggested that common controls provide a foundation for the development of regional and global models that incorporate ecological controls of biological N fixation.

TL;DR: Seasonal patterns of NPP in South America are correlated with moisture availability in most vegetation types, but are strongly influenced by seasonal differences in cloudiness in the tropical evergreen forests.

TL;DR: Evidence is provided from a 15N-tracer field experiment showing that plant species in a nitrogen-limited, arctic tundra community were differentiated in timing, depth and chemical form of nitrogen uptake and that species dominance was strongly correlated with uptake of the most available soil nitrogen forms.