Steven S. Perakis

TL;DR: In this paper, the authors used the Century terrestrial ecosystem model to compare observed and Century-modeled BNF and found a strong positive relationship between ecosystem ET and BNF, and their analyses suggest that the model's simple relationships for BNF predict broad scale patterns, they do not capture much of the variability or magnitude of published rates.

TL;DR: Stream chemistry data from 100 unpolluted primary forests in temperate South America is reported, and it is suggested that organic nitrogen losses should be considered in models of forest nutrient cycling, which could help to explain observations of nutrient limitation in temperates forest ecosystems.

TL;DR: In this article, the authors synthesize current research relating atmospheric N deposition to effects on terrestrial and freshwater ecosystems in the United States, and to estimate associated empirical N critical loads, defined as the input of a pollutant below which no detrimental ecological effects occur over the long-term according to present knowledge.

TL;DR: In this paper, the authors applied '5N pool dilution and pulse-chase tracer techniques within small plots to understand flows of inorganic nitrogen in the surface soil of an evergreen mixed-angiosperm forest.

TL;DR: A meta-analysis of studies at 48 sites across four continents that used enriched 15N isotope tracers concluded that growth enhancement and potential for increased C storage in aboveground biomass from atmospheric N deposition is likely to be modest in these ecosystems.