Stephen Porder

TL;DR: It is suggested that depletion, soil barriers, and low-P parent material often cause ultimate limitation because they control the ecosystem mass balance of P and cause it to be an ultimate limiting nutrient.

TL;DR: A meta-analysis of carbon-nutrient-climate relationships in 113 sites across the tropical forest biome showed that mean annual temperature was the strongest predictor of aboveground NPP (ANPP) across all tropical forests, but this relationship was driven by distinct temperature differences between upland and lowland forests.

TL;DR: A review of the literature on ecosystem retrogression can be found in this paper, where the authors synthesize the findings from studies of long-term chronosequences that include retrogressive stages for systems spanning the boreal, temperate, and subtropical zones.

TL;DR: In this paper, the effects of tectonic uplift, erosion, and soil depth on the advection of P through the soil column and P availability were modeled with data from two basaltic chronosequences in Hawai'i and a series of greywacke terraces in New Zealand.

TL;DR: It is estimated that intensification of the 8–12% of global croplands overlying phosphorus-fixing soils in 2005 would require 1–4 Tg P yr–1 to overcome phosphorus fixation, equivalent to 8–25% ofglobal inorganic phosphorus fertilizer consumption that year.