@bufoninus Indeed, this looks like bubbling from materials dissolved in #stemflow! There’s lots of cool stuff in that foam ;) for example, fungal spores typically only found in streams: https://t.co/4VGDZB1FXa

Glad to see a comparison of #soil water #isotope methods without spiking previously dried soils by Tsuruta et al.(https://t.co/xKJKTlovlu). They further consider varying volumes of differently bound soil pore waters. Potential different water ages in pores are not discussed.