Convergence between ANPP estimation methods in grasslands - A practical solution to the comparability dilemma

The majority of the resulting 27 conversions had high (pseudo) R2 values (≥0.65; full range: 0.31-0.92), indicating clear linear relationships between most ANPP estimation methods. Given the large size of the dataset and the accuracy of statistical models, we assume that most conversion formulae are generally valid. We classified conversions with respect to their R2 values and their methodological comparability, and concluded that 16 conversions can be fully recommended. For those cases where a recalculation of ANPP on basis of original biomass data is not possible, our conversion formulae offer an easy and practical approach to synchronize ANPP estimates from divergent algorithms and sources.