Depth (cm)	Average depth (cm)	Year AD	C10	C11	C12	C13	C14	C15	C16	C17	C18	C19	C20	C21	C22	C23	C24	C25	C26	C27	C28	C29	C30	C31	C32	C33	C34	C35	Odd	Even	Total	CPI	ACL	Paq	TAR	27/31	31/27	Forest VS grassland
0-1	0.5	2013	nd	<lod	nd	nd	nd	nd	<lod	7.92	nd	4.31	1.16	26.77	nd	2.37	1.09	19.55	2.85	44.95	nd	3.60	nd	1.25	2.48	nd	nd	nd	110.73	7.59	118.31	13.24	24	0.82	4.07	35.86	0.03	14.02
1-2	1.5	2005	nd	<lod	nd	nd	0.04	0.09	<lod	10.34	0.37	1.02	0.00	1.12	0.83	3.26	1.17	62.46	2.44	22.70	2.01	20.42	1.68	16.06	1.46	8.87	nd	nd	146.35	10.01	156.36	14.00	26	0.64	5.17	1.41	0.71	2.89
3-4	3.5	1988	nd	nd	nd	0.49	nd	nd	1.14	3.80	0.32	1.55	0.39	<lod	nd	2.73	nd	21.49	3.60	37.64	0.99	18.59	nd	3.35	nd	nd	nd	nd	89.64	6.42	96.07	18.29	26	0.52	11.13	11.23	0.09	3.54
6-7	6.5	1962	nd	nd	nd	nd	nd	nd	<lod	nd		14.99	nd	<lod	1.91	nd	1.88	19.03	3.93	44.16	1.78	13.55	1.09	9.24	nd	nd	nd	nd	100.97	10.60	111.57	8.11	26	0.46	4.47	4.78	0.21	3.37
8-9	8.5	1945	nd	<lod	nd	nd	nd	nd	<lod	0.18	nd	0.22	0.22	0.71	0.46	2.14	1.00	20.42	1.87	11.67	nd	9.64	0.65	5.74	0.48	3.85	nd	nd	54.57	4.69	59.26	12.04	27	0.59	67.04	2.03	0.49	2.71
10-11	10.5	1928	nd	<lod	nd	nd	nd	nd	<lod	0.44	0.12	0.18	0.19	0.70	1.67	1.97	1.16	7.03	0.24	1.49	6.25	1.12	6.39	0.50	4.90	0.35	2.56	nd	13.78	23.47	37.25	0.55	28	0.85	4.98	2.96	0.34	5.94
11-12	11.5	1919	nd	<lod	nd	nd	nd	nd	<lod	0.41	0.09	0.34	0.25	0.99	3.10	2.85	1.54	12.43	2.12	2.03	9.24	1.80	10.37	0.90	8.21	0.48	4.75	nd	22.23	39.67	61.91	0.53	28	0.85	6.26	2.26	0.44	6.04
12-13	12.5	1910	nd	<lod	nd	nd	nd	nd	<lod	0.64	nd	0.30	0.30	1.36	3.71	3.73	2.40	25.58	1.83	3.16	14.62	2.22	13.88	1.28	10.76	0.88	7.14	2.59	41.73	54.63	96.36	0.71	28	0.89	7.08	2.47	0.40	8.85
13-14	13.5	1901	nd	<lod	nd	nd	nd	nd	0.39	0.54	0.17	0.40	0.65	2.09	4.86	4.89	2.84	40.40	4.90	3.47	18.56	2.81	16.06	1.41	13.73	1.04	8.50	2.99	60.03	70.66	130.69	0.81	28	0.91	8.23	2.47	0.41	11.07
14-15	14.5	1894	nd	<lod	nd	nd	nd	nd	0.31	0.59	0.19	0.58	0.50	1.90	1.04	4.25	1.79	58.40	2.62	3.12	23.23	2.20	15.73	1.19	13.12	0.68	8.25	3.68	76.59	66.78	143.37	1.10	27	0.95	5.58	2.63	0.38	18.82
17-18	17.5	1867	nd	<lod	nd	nd	nd	0.16	<lod	0.35	0.21	0.42	0.41	1.38	1.73	3.06	1.80	33.04	2.37	12.13	1.74	11.58	1.02	8.81	nd	nd	5.76	nd	70.92	15.04	85.97	4.81	27	0.64	35.30	1.38	0.73	2.78
18-19	18.5	1860	nd	<lod	nd	nd	nd	nd	<lod	0.21	0.07	0.33	0.32	1.18	0.96	2.70	1.38	44.87	2.17	13.47	1.55	9.50	0.85	7.58	0.34	nd	4.29	nd	79.84	11.94	91.78	6.81	27	0.74	56.89	1.78	0.56	3.97
19-20	19.5	1849	nd	<lod	nd	nd	nd	nd	<lod	nd	nd	0.42	0.39	1.63	1.59	3.84	2.01	69.44	3.59	22.95	2.60	15.50	1.03	10.15	0.57	nd	6.88	nd	123.92	18.66	142.59	6.71	27	0.74	115.04	2.26	0.44	4.21
20-21	20.5	1841	0.30	<lod	nd	nd	nd	nd	<lod	0.21	0.15	0.29	0.30	1.05	0.71	2.02	0.98	39.57	1.55	7.95	1.45	8.31	0.72	6.56	0.35	3.46	nd	nd	69.41	6.51	75.93	11.87	26	0.74	45.08	1.21	0.83	3.76
21-22	21.5	1832	nd	<lod	nd	nd	nd	nd	<lod	0.02	0.02	0.10	nd	<lod	0.27	0.84	0.40	13.30	0.88	5.15	0.55	3.23	0.21	2.40	0.16	1.28	nd	nd	26.32	2.48	28.80	10.65	27	0.72	92.74	2.14	0.47	3.85
22-23	22.5	1826	nd	<lod	nd	nd	nd	nd	<lod	0.15	0.13	0.08	0.17	0.26	0.31	0.79	0.44	3.35	0.73	3.53	0.68	4.28	0.36	3.40	0.21	1.94	0.17	nd	17.77	3.19	20.96	6.01	28	0.35	49.42	1.04	0.96	1.45
24-25	24.5	1806	0.14	<lod	0.71	nd	nd	nd	0.07	0.36	0.34	0.20	0.24	0.58	0.49	2.35	0.88	17.61	1.71	12.83	1.22	7.32	0.53	5.05	nd	3.33	nd	nd	49.62	6.34	55.96	10.09	27	0.62	45.03	2.54	0.39	3.05
25-26	25.5	1797	nd	<lod	nd	nd	0.09	0.13	<lod	0.21	0.15	0.24	0.37	0.56	1.45	0.77	7.46	0.86	6.35	0.78	4.83	0.41	4.19	0.30	2.58	nd	nd	4.22	8.48	27.47	35.95	0.21	27	0.69	2.56	2.54	0.39	2.85
26-27	26.5	1792	nd	<lod	0.53	0.12	0.08	0.19	<lod	0.26	0.15	0.17	0.16	0.53	0.44	2.75	0.78	7.62	1.21	5.77	0.99	5.11	0.46	4.40	0.32	2.62	nd	nd	29.54	5.11	34.65	6.79	27	0.52	24.65	1.31	0.76	1.95
27-28	27.5	1780	nd	<lod	nd	0.03	nd	0.05	0.29	0.10	0.11	0.06	0.10	0.06	0.17	0.42	0.30	0.77	0.48	1.51	0.46	2.06	0.25	1.63	0.15	0.99	nd	nd	7.69	2.29	9.97	4.13	28	0.24	24.97	0.93	1.08	1.18
28-29	28.5	1771	nd	<lod	nd	nd	nd	nd	<lod	0.19	0.24	0.09	nd	0.30	0.25	0.77	0.38	2.83	0.66	2.78	0.47	3.11	0.22	1.88	nd	0.83	nd	nd	12.77	2.22	14.98	6.23	27	0.42	28.15	1.48	0.68	1.75
29-30	29.5	1758	0.23	<lod	nd	0.09	nd	0.08	<lod	0.13	0.09	0.06	nd	0.18	0.15	0.74	0.26	2.31	0.37	2.13	0.38	1.87	0.17	1.48	0.13	0.95	nd	nd	10.01	1.77	11.78	6.60	27	0.48	20.70	1.44	0.69	1.88
																																						
		 																										
Authors: Elena Argiriadis, Luisa Poto, Ilaria Baneschi, Carlo Barbante
Project ref. number 641762 Project title ECOPOTENTIAL: IMPROVING FUTURE ECOSYSTEM BENEFITS THROUGH EARTH OBSERVATIONS	
Changes in the hydrologic aspects of climate are of optimum importance. However, the details of past changes in the hydrologic cycle are difficult to reconstruct. In this reportwe show the firs results of the analyses of paleohydrologicalproxies(n-alkanes)that allow the reconstruction of multiple terms of the hydrologic budgetin the GPNP. We analyzed a core from Lake Trebecchi (GPNP), and after the definition of the age-dating chronology, we measured the concentrations of n-alkanes and their major indexes (ACL, Paq, C27/C31) usually selected to infer information about hydrological evolution of the ecosystems.

Concentrations are given in ng/g