Mathew Williams

TL;DR: Factorial simulations conducted to ascertain the contributions of four environmental drivers to simulated changes in Amazonian vegetation carbon found increased temperature was found to be more important than precipitation reduction in causing losses of Amazonian C(veg) in two DGVMs (Hyland and TRIFFID), and as important as precipitation Reduction in a third DGVM (LPJ).

TL;DR: In this paper, the authors examined the factors that control daily and seasonal carbon and latent energy fluxes, by comparing a detailed model of the soil-plant-atmosphere continuum against a unique long-term data-set collected using eddy covariance at an undisturbed rain forest site north of Manaus, Brazil.

TL;DR: In this article, the authors identify the current state of carbon observations, and the needs and notional requirements for a global integrated carbon observation system that can be built in the next decade, and conclude that substantial expansion of the ground-based observation networks required to reach the high spatial resolution for CO2 and CH4 fluxes, and for carbon stocks for addressing policy-relevant objectives, and attributing flux changes to underlying processes in each region.

TL;DR: In this article, the authors assess the effectiveness of canopy leaf area in explaining variation in gross primary productivity (GPP): (i) across different vegetation types; (ii) at various stages of leaf development; and (iii) under enhanced nutrient availability.