Bioavailable DOC: reactive nutrient ratios control heterotrophic nutrient assimilation—An experimental proof of the macronutrient-access hypothesis

The article is available online here https://doi.org/10.1007/s10533-021-00809-4 or as a PDF here https://link.springer.com/content/pdf/10.1007/s10533-021-00809-4.pdf.