The data in this set describes the throughfall collection on WS1 during 2010 and 2011, as well as the isotopic data assessed from these samples. In the Fall of 2010 there were eleven collection periods and in the Spring of 2011 there were eight collection periods. Data is no longer being collected. Throughfall and rainfall were measured at point locations, measured for the quantity and isotopic composition (Oxygen-16/18 and Hydrogen/Deuterium). Stemflow was also collected off of two PSME trees, one on the north-facing and one on the south-facing slope. These are the "plots" for this study, although they have no defined radius. During the Fall 2010 collection period, thirteen collectors were used, near the stream channel, along the trail in WS1. During the Spring 2011, there were eighteen collectors at each of two plots. Rainfall was also measured in an opening at the WS1 landing for comparison.
Barbara J Bond, Scott Thomas Allen
Our goal was to develop a better understanding of the canopy processes that control the isotopic variations of throughfall. Additionally we were interested in patterns of throughfall isotopic composition and depth. Better understanding of throughfall patterns in heterogeneous terrain is important because since both rainfall and vegetation patterns are highly variable in complex terrain, and summer interception loss could be an important control over the spatial variability of the availability of moisture, coinciding with when vegetation is most water-limited.