Catchment stream monitoring of water chemistry. Mountainous catchment (59% bare rock) on acid-sensitives soils, 580-690 masl

Terrestrial ecosystems monitoring site located in boreal coniferous forests

Dataset provides soluble reactive phosphorus (SRP) concentrations measured in Lake Santo Parmense during the period 1953-1954. Water samples for SRP analysis were collected only from the surface layer at the point of maximum depth of the lake. No information on the analytical method used is available.

Øvre Heimdalen is located by Valdresflya in the eastern part of Jotunheimen on the border between the municipalities of Øystre Slidre and Vågå. The valley floor, which is oriented east-west, is at an altitude of 1,100 metres. The surrounding mountains reach over 1,800 m above sea level. Birch forest grows on the south-facing valley side, but the rest of the area is above the tree line. Research activity in Øvre Heimdalen began in 1957 with documentation of the trout population in Øvre Heimdalsvatn, and how the biomass, growth rate and age composition of the population were affected by environmental conditions.

Dataset provides phytoplankton densities recorded in Lake Santo Parmense in 1991. 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. Phytoplankton were identified and counted with an inverted microscope according to Utermöhl (1958). Densities on each date are reported as average of the values measured at different depths.

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 reactive silica concentrations measured in Lake Santo Parmense in 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. Samples were analysed spectrophotometrically according to Golterman et al. (1978).

Dataset provides pH 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. pH was measured by means of a pH meter.

Dataset provides dissolved reactive phosphorus concentrations measured in Lake Santo Parmense between june 1973 and october 1974. 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 according to APHA, AWWA, WPCF (1971).

Dataset provides dissolved reactive silica 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 Golterman et al. (1978).