Steven S. Perakis, Jana E. Compton, and Lars O. Hedin. 2005. Nitrogen retention across a gradient of ¹⁵N additions to an unpolluted temperate forest soil in Chile. Ecology 86:96–105.

Appendix A. Recovery of ¹⁵N additions after one year. All values are as kg N/ha.

	0–10 cm								0–10 cm	10–25 cm	0–25 cm
N added	NH4+	NO3-	DON	Microbe	SOM	POM	Fine	Coarse	Subtotal	Subtotal	Total
0.2	<0.001	<0.001	0.001	0.004	0.074	0.007	0.025	0.006	0.118	0.018	0.14
5	0.003	<0.001	0.01	0.12	1.46	0.07	0.49	0.06	2.21	0.08	2.29
10	0.002	<0.001	0.02	0.26	3.10	0.24	1.04	0.20	4.86	0.41	5.27
20	0.008	<0.001	0.03	0.32	5.89	0.28	1.38	0.62	8.51	0.77	9.28
40	0.043	<0.001	0.01	0.97	10.19	0.58	2.43	2.65	16.86	1.46	18.33
80	0.025	0.001	0.15	2.51	20.63	2.60	10.53	3.53	39.98	4.21	44.19
160	0.26	<0.001	0.62	4.27	52.52	4.56	17.15	11.50	90.88	9.33	100.21
320	1.19	<0.001	0.70	5.92	56.73	10.53	35.90	20.70	131.66	5.07	136.73
640	2.02	0.007	1.77	12.47	110.92	35.82	58.37	90.97	312.35	25.56	337.91