Core name	Depth (cm)	Average depth (cm)	210Pb		Cal age BP	Year AD
3B-1	0-1	0.5	1167.54	28.38	4	2013
3B-1	2-3	2.5	1036.59	31.58	21	1996
3B-1	4-5	4.5	163.46	5.31	37	1980
3B-1	6-7	6.5	198.29	7.64	54	1963
3B-1	8-9	8.5	40.82	1.94	70	1947
3B-1	10-11	10.5	62.22	2.89	87	1930
3B-1	14-15	14.5	36.10	2.14	120	1897
3B-1	18-19	18.5	20.30	0.93	153	1864
3B-1	22-23	22.5	7.14	0.42	186	1831
3B-1	26-27	26.5	8.35	0.43	220	1797
3B-1	30-31	30.5	5.53	0.36	253	1764
3B-2	0-1	0.5	1081.21	28.61	4	2013
3B-2	1-2	1.5	1036.09	25.33	13	2004
3B-2	2-3	2.5	864.02	18.52	21	1996
3B-2	3-4	3.5	696.93	20.79	30	1987
3B-2	4-5	4.5	314.36	7.99	38	1979
3B-2	5-6	5.5	190.81	6.59	46	1971
3B-2	7-8	7.5	138.03	4.62	63	1954
3B-2	9-10	9.5	47.03	1.88	80	1937
3B-2	11-12	11.5	54.24	2.03	97	1920
3B-2	13-14	13.5	52.75	1.77	114	1903
3B-2	15-16	15.5	32.79	1.13	131	1886
3B-2	17-18	17.5	14.33	0.67	148	1869
3B-2	19-20	19.5	14.02	0.65	165	1852
3B-2	21-22	21.5	15.92	1.08	182	1835
3B-2	23-24	23.5	7.31	0.35	198	1819
3B-2	26-29	27.5	9.30	0.39	232	1785

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.

210Pb values are given in Bq/kg