John S. Roden

TL;DR: Ehleringer et al. as mentioned in this paper used stable isotope ratio analyses to constrain the analysis of flux data, such as identifying those specific soil layers that are the source of current moisture use by the vegetation or the ratio of carbon dioxide to water (CO2-to-H2O) flux.

TL;DR: Recent advances are summarized and promising paths of investigation are highlighted with respect to growth phenology, forest productivity trends and variability, CO2 fertilization and water-use efficiency, forest disturbances, and comparisons between observational and computational forest productivity estimates.

TL;DR: The dual-isotope approach appears to be valid conceptually, but more work is needed to make it operational under different scenarios to provide a clear way to interpret variation in carbon isotope discrimination.

TL;DR: Tree-ring carbon isotope discrimination and oxygen isotopes collected from white pine trees adjacent to Lake Superior show potential to produce the first winter-specific paleoclimate reconstruction with inter-annual resolution for this region, and are combined to demonstrate feasibility to reconstruct variability in Tmin, ice cover, and continental-scale atmospheric circulation patterns.

TL;DR: The dual-isotope model is utilized to infer physiological responses of mature Pseudotsuga menziesii (Mirb) Franco trees to environmental variation associated with site differences and canopy position and is limited by a number of model assumptions and constraints that are often overlooked.