d13C			
Depth (cm)	Average depth (cm)	Year AD	C21	C23	C25	C29
0-1	0.5	2013	-31.097	-30.835	-30.647	-30.275
1-2	1.5	2005	-28.055	-28.064	-27.39	-28.62
3-4	3.5	1988	-29.192	-29.784	-29.133	-29.4
4-5	4.5	1979	-29.121	-29.189	-29.605	-28.847
5-6	5.5	1971	-30.597	-30.199	-28.996	-28.872
6-7	6.5	1962	-27.615	-27.773	-27.93	-28.085
7-8	7.5	1953	-27.976	-27.116	-28.134	-28.157
8-9	8.5	1945	-25.975	-25.371	-25.558	-25.339
9-10	9.5	1936	-30.167	-28.647	-28.048	-28.702
10-11	10.5	1928	-29.655	-28.967	-29.365	-28.274
11-12	11.5	1919	-29.025	-27.351	-26.977	-27.082
13-14	13.5	1901	-29.582	-28.166	-27.346	-27.878
14-15	14.5	1894	-26.351	-23.845	-25.845	-25.501
15-17	16	1880	-26.273	-25.805	-26.554	-26.066
17-18	17.5	1867	-29.424	-26.541	-27.392	-27.178
18-19	18.5	1860	-29.832	-28.287	-27.147	-27.582
19-20	19.5	1849	-27.886	-25.946	-26.197	-26.038
20-21	20.5	1841	-26.196	-24.902	-26.095	-25.731
21-22	21.5	1832	-25.839	-24.693	-25.951	-26.298
24-25	24.5	1806	-30.651	-29.836	-28.965	-29.432
25-26	25.5	1797	-29.196	-29.313	-27.245	-29.851
26-27	26.5	1792	-30.065	-29.936	-27.957	-28.797
27-28	27.5	1780	-31.046	-31.306	-30.482	-31.557
28-29	28.5	1771	-38.718	-38.419	-31.869	-35.744
29-30	29.5	1758	-28.543	-28.944	-27.586	-29.093

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.