@LWGChem The timescale will only go as far back as that colony of Hyrax's were present which is a relatively short timescale. A more detailed explanation of N-isotopes which dives deeper into plant and soil based Nitrogen isotopes can be found at: https:
@DanielaCusack This one is good for N isotopes: https://t.co/WdtopR7lGb
@AnsonMackay While I agree that N isotopes are a fantastic proxy, the d15N ~ rainfall assumption ignores the (v. interesting) complexity of the N cycle. Here's a good review that could help palaeoecologists improve their interpretation of this proxy https:
Curious about nitrogen isotopes in plants and soils? The best review paper is by JM Craine et al found here: http://t.co/gBnNxkzkOp