Dataset provides nitrate concentrations measured in Lake Santo Parmense in 1991. Water samples were collected by means of a Ruttner bottle at different depths over the whole water column at the point of maximum depth of the lake. Samples were analysed by means of the Sodium Salicylate Method (Rodier, 1978).

Dataset provides dissolved oxygen measured in Lake Santo Parmense during the period 2001-2003. Water samples were collected by means of a Ruttner bottle at different depths over the whole water column at the point of maximum depth of the lake. Dissolved oxygen was measured by means of the Winkler method.

Dataset provides ammonia concentrations measured in Lake Santo Parmense in 1991. Water samples were collected by means of a Ruttner bottle at different depths over the whole water column at the point of maximum depth of the lake. Samples were analysed spectrophotometrically according to Koroleff (1970).

Dataset provides dissolved oxygen measured in Lake Santo Parmense during the period 2007-2010. Water samples were collected by means of a Ruttner bottle at different depths over the whole water column at the point of maximum depth of the lake. Dissolved oxygen was measured by means of the Winkler method.

Dataset provides dissolved oxygen measured in Lake Santo Parmense during the period 1971-1975. Water samples were collected by means of a Ruttner bottle at different depths over the whole water column at the point of maximum depth of the lake. Dissolved oxygen was measured by means of the Winkler method.

Dataset provides dissolved oxygen measured in Lake Santo Parmense in 1991. Dissolved oxygen was measured by means of an oxygen probe at different depths over the whole water column at the point of maximum depth of the lake. On three dates water samples were collected with a Ruttner bottle and dissolved oxygen was measured by means of the Winkler method.

Dataset provides information about pH in Lake Paione Superiore(LPS) at different layer depths collected at least twice per year (late summer/autumn) within the period 2014-2020. The ongoing studies of the water chemistry of Paione lakes aimed at monitoring their recovery from acidification or possible responses to climate warming (http://www.ise.cnr.it/research/global-change/altitude-lakes). The lake is included in the monitoring sites of the UN-ECE Program ICP WATERS (International Cooperative Programme on Assessment and Monitoring of Acidification of Rivers and Lakes) and in the NEC-Italy network. It is also a research site of the LIFE MODERn NEC Project (LIFE20 GIE/IT/000091).

Average values along the water column of reactive silica collected in the Lake Bidighinzu

Dataset provides information about reactive silica (in mg Si L-1) in Lake Paione Inferiore (LPI) at different layer depths along the water column within the period 1984-2013. Data are at least biannual (late summer/autumn). In total 279 records of reactive silica in the Lake for the period are uploaded. The range is from 0.065 to 1.39 mg Si L-1 (±0.153). Lake Paione Inferiore is a high altitude Alpine lake, located in the Bognanco Valley, Province of Verbania, Piedmont Region, Italy. It has a surface area of 0.86 ha and a maximum depth of 13.5 m. The Lake is included in the monitoring sites of the UN-ECE Program ICP WATERS (International Cooperative Programme on Assessment and Monitoring of Acidification of Rivers and Lakes)

Dataset provides information about reactive silica (in mg Si L-1) in Lake Paione Superiore (LPS) at different layer depths along the water column within the period 2014-2020. Data are at least biannual (late summer/autumn). In total 37 records of reactive silica in the Lake for the period are uploaded. The range is from 0.14 to 0.82 mg Si L-1 (±0.105). Lake Paione Superiore is a high altitude Alpine lake, located in the Bognanco Valley, Piedmont Region, Italy. It has a surface area of 0.68 ha and a maximum depth of 11.5 m. The lake is included in the monitoring sites of the UN-ECE Program ICP WATERS (International Cooperative Programme on Assessment and Monitoring of Acidification of Rivers and Lakes) and in the NEC-Italy network. It is also a research site of the LIFE MODERn NEC Project (LIFE20 GIE/IT/000091).