Reply to Krishna et al.: Resolving age-related changes in nitrogen fixation and mineral weathering by Alnus tree species [Biological Sciences]

In PNAS we report that the symbiotic nitrogen-fixing tree red alder (Alnus rubra) accesses more rock-derived nutrients than nonfixing trees (1). We further hypothesize that excess nitrogen fixation by alder, leading to high rates of nitrification and nitric acid generation in soil, could accelerate mineral weathering (1, 2). Krishna et...

Source: Proceedings of the National Academy of Sciences - September 30, 2019 Category: Science Authors: Steven S. Perakis, Julie C. Pett-Ridge Tags: Letters, Front Matter-Letters-Set Free Source Type: research