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Platform data

Overview

Detailed view

Monthly mean nutrient and element concentrations in soil solution and monthly sum of litterfall from Q2.1. Soil solution was sampled from below the organic layer (lysimeter), 15cm and 30cm depth. Monthly means were calculated from weekly measurements. The measured nutrients and elements comprise: pH, PO4-P, Ptot, Cl, NH4-N, NO3-N, Ntot, DOC, Ca, K, Mg, Na.

Fortnightly time series of measured concentrations of Cl, PO4-P, Total P, NH4-N, NO3-N, Total N, K, Na, Mg, Ca and Total organic C in throughfall at NUMEX San Francisco. The fortnightly time series extends between August 2007 and March 2013. Throughfall was sampled on the 20 NUMEX plots with Hellmann-type collectors. On each plot 20 replicates were collected, volume-weighted and bulked to one sample per plot. Samples were immediately filtered (4-7 µm) in the laboratory of the ECSF  and stored at -20 °C until transport in frozen state to Germany or to Switzerland for concentration measurements.

Weekly time series of measured concentrations of Al, Mn, Zn, Cl, PO4-P, Total P, NH4-N, NO3-N, Total N, S, K, Na, Mg, Ca and Total organic C in stem flow in the ECSF area in the microcatchment Q2 (transect Q2.1). The weekly time series extends between March 1998 and May 2013. Stem flow was sampled weekly in Q2.1 with polyurethane collars on 5 representative tree species: Piptocoma discolor (Kunth) Pruski, Heliocarpus americanus L., Sapium glandulosum (L.) Morong, Cyathea caracasana (Klotzsch) Domin, Cecropia angustifolia Trécul. The five stem flow samples were collected, volume-weighted and bulked to one sample per per collecting interval. Samples were immediately filtered (4-7 µm) in the laboratory of the ECSF and stored at -20 °C until transport in frozen state to Germany or to Switzerland for concentration measurements.

Fortnightly time series of measured concentrations of Cl, PO4-P, Total P, NH4-N, NO3-N, Total N, K, Na, Mg, Ca and Total organic C in soil solution (30 cm mineral soil depth) at NUMEX San Francisco. The fortnightly time series extends between August 2007 and March 2013. Soil solution was sampled on the 20 NUMEX plots with ceramic suction cups having a pore size of 1 µm installed at 30 cm depth in the mineral soil. On each plot 3 replicates were collected and bulked to one sample per plot. The samples were stored at -20 °C until transport in frozen state to Germany or to Switzerland for concentration measurements.

Weekly time series of water fluxes, electrical conductivity, pH values and measured concentrations of Al, Mn, Zn, Cl, PO4-P, Total P, NH4-N, NO3-N, Total N, K, Na, Mg, Ca and Total organic C in precipitation from the Bombuscaro site at 1000 m a.s.l. located at the climate station. The weekly time series extends between March 2018 and December 2019. Precipitation was sampled with 5 Hellmann-type collectors. Replicates were collected, volume-weighted and bulked to one sample per plot. Electrical conductivity and pH values were measured immediately in unfiltered aliquots in the laboratory at the ECSF. Samples were filtered (4-7 µm) in the laboratory of the ECSF and stored at -20 °C until transport in frozen state to Germany for concentration measurements.

Weekly time series of water fluxes, pH, electrical conductivity and measured concentrations of Al, Cu, Mn, Zn, Cl, PO4-P, Total P, NH4-N, NO3-N, Total N, S, K, Na, Mg, Ca and Total organic C in stream water in the ECSF area in the microcatchment Q2. The weekly time series extends between March 1998 and December 2016. Stream water was sampled weekly upstream of the weir in Q2.1. Samples were immediately filtered (4-7 µm) in the laboratory of the ECSF and stored at -20 °C until transport in frozen state to Germany or to Switzerland for concentration measurements.

Fortnightly time series of measured concentrations of Cl, PO4-P, Total P, NH4-N, NO3-N, Total N, K, Na, Mg, Ca and Total organic C in litter leachate at NUMEX San Francisco. The fortnightly time series extends between August 2007 and March 2013. Litter leachate was sampled on the 20 NUMEX plots with tero-tension lysimeters below the organic layer. On each plot 3 replicates were collected, volume-weighted and bulked to one sample per plot. Samples were immediately filtered (4-7 µm) in the laboratory of the ECSF and stored at -20 °C until transport in frozen state to Germany or to Switzerland for concentration measurements.

Monthly aggregated time series of measured concentrations of Al, Cu, Fe, Mn, Zn, C, N, S, P, K, Na, Mg, Ca in litterfall in the ECSF area in the microcatchment Q2. Litterfall was sampled weekly on the 3 transects of Q2 (Q2.1, Q2.2, Q2.3) with 3 polyethylene mesh collectors (0.5 x 0.5 m) per transect. The samples were dried at 40 °C for one week and stored at the ECSF until transport to Germany or Switzerland for chemical analyses. The replicates at upper, middle and lower slope were bulked per transect and collecting interval and the results were subsequently aggregated per month and transect. Samples were ground to <50 µm with a planetary ball mill (Retsch PM200, Haan, Germany) prior to elemental analysis of C, N, and S by thermal combustion (Elementar Analysensysteme, Hanau, Germany) and acid microwave digestion with concentrated HNO3. Element concentrations in the digested samples were measured by AAS, ICP-OES or ICP-MS.

Weekly time series of measured concentrations of Al, Cu, Mn, Zn, Cl, PO4-P, Total P, NH4-N, NO3-N, Total N, S, K, Na, Mg, Ca and Total organic C in stream water in the ECSF area in the microcatchment Q2. The weekly time series extends between March 1998 and May 2013. Stream water was sampled weekly upstream of the weir in Q2.1. Samples were immediately filtered (4-7 µm) in the laboratory of the ECSF and stored at -20 °C until transport in frozen state to Germany or to Switzerland for concentration measurements.

Monthly mean nutrient and element concentrations in stem flow from Q2. The monthly values were calculated from weekly measurements. Stem flow was collected from 5 trees in Q2. A list of tree species and tree properties can be found in Fleischbein et al. (2005, Hydrological Processes).

Teabag decomposition of green Litpon tea (see teabag index) was measured at 1000 and 2000m with teabags soaked in different 1M sodium solutions.

Fortnightly time series of measured concentrations of Cl, PO4-P, Total P, NH4-N, NO3-N, Total N, K, Na, Mg, Ca and Total organic C in soil solution (15 cm mineral soil depth) at NUMEX San Francisco. The fortnightly time series extends between August 2007 and March 2013. Soil solution was sampled on the 20 NUMEX plots with ceramic suction cups having a pore size of 1 µm installed at 15 cm depth in the mineral soil. On each plot 3 replicates were collected and bulked to one sample per plot. The samples were stored at -20 °C until transport in frozen state to Germany or to Switzerland for concentration measurements.

Weekly time series of measured concentrations of Al, Mn, Zn, Cl, PO4-P, Total P, NH4-N, NO3-N, Total N, S, K, Na, Mg, Ca and Total organic C in throughfall in the ECSF area in the microcatchment Q2 (transects Q2.1, Q2.2 and Q2.3). The weekly time series extends between March 1998 and May 2013. Throughfall was sampled with 20 Hellmann-type collectors per transect. Replicates were collected, volume-weighted and bulked to one sample per transect and collecting interval. Samples were immediately filtered (4-7 µm) in the laboratory of the ECSF and stored at -20 °C until transport in frozen state to Germany or to Switzerland for concentration measurements.

Monthly mean nutrient and element concentrations in soil solution and monthly sum of litterfall from Q2.3. Soil solution was sampled from below the organic layer (lysimeter), 15cm and 30cm depth. Monthly means were calculated from weekly measurements. The measured nutrients and elements comprise: pH, PO4-P, Ptot, Cl, NH4-N, NO3-N, Ntot, DOC, Ca, K, Mg, Na.

Weekly time series of water fluxes, pH, electrical conductivity and measured concentrations of Al, Cu, Mn, Zn, Cl, PO4-P, Total P, NH4-N, NO3-N, Total N, S, K, Na, Mg, Ca and Total organic C in stem flow in the ECSF area in the microcatchment Q2. The weekly time series extends between March 1998 and December 2016. Stem flow was sampled weekly in Q2.1 with polyurethane collars on 5 representative tree species: Piptocoma discolor (Kunth) Pruski, Heliocarpus americanus L., Sapium glandulosum (L.) Morong, Cyathea caracasana (Klotzsch) Domin, Cecropia angustifolia Trécul. The five stem flow samples were collected, volume-weighted and bulked to one sample per per collecting interval. Samples were immediately filtered (4-7 µm) in the laboratory of the ECSF and stored at -20 °C until transport in frozen state to Germany or to Switzerland for concentration measurements.

Monthly mean nutrient and element concentrations in soil solution and monthly sum of litterfall from Q2.2. Soil solution was sampled from below the organic layer (lysimeter), 15cm and 30cm depth. Monthly means were calculated from weekly measurements. The measured nutrients and elements comprise: pH, PO4-P, Ptot, Cl, NH4-N, NO3-N, Ntot, DOC, Ca, K, Mg, Na.

Weekly time series of throughfall fluxes, electrical conductivity, pH values and measured concentrations of Al, Mn, Zn, Cl, PO4-P, Total P, NH4-N, NO3-N, Total N, S, K, Na, Mg, Ca and Total organic C in throughfall in the ECSF area in the microcatchment Q2 (transects Q2.1, Q2.2 and Q2.3). The weekly time series extends between March 1998 and December 2016. Throughfall was sampled with 20 Hellmann-type collectors per transect. Replicates were collected, volume-weighted and bulked to one sample per transect and collecting interval. Samples were immediately filtered (4-7 µm) in the laboratory of the ECSF and stored at -20 °C until transport in frozen state to Germany or to Switzerland for concentration measurements. Electrical conductivity and pH values were measured immediately in unfiltered aliquots in the laboratory of the ECSF.

Weekly time series of measured concentrations of Al, Mn, Zn, Cl, PO4-P, Total P, NH4-N, NO3-N, Total N, S, K, Na, Mg, Ca and Total organic C in litter leachate in the ECSF area in the microcatchment Q2 (transects Q2.1, Q2.2 and Q2.3). The weekly time series extends between March 1998 and May 2013. Litter leachate was sampled on the three transects with zero-tension lysimeters below the organic layer. On each transect 3 replicates at upper, middle and lower slope positions were collected, volume-weighted and bulked to one sample per plot and collecting interval. Samples were immediately filtered (4-7 µm) in the laboratory of the ECSF and stored at -20 °C until transport in frozen state to Germany or to Switzerland for concentration measurements.

Weekly time series of measured concentrations of Al, Mn, Zn, Cl, PO4-P, Total P, NH4-N, NO3-N, Total N, S, K, Na, Mg, Ca and Total organic C in soil solution (at 15 cm mineral soil depth) in the ECSF area in the microcatchment Q2 (transects Q2.1, Q2.2 and Q2.3). The weekly time series extends between May 2000 and May 2013. Soil solution was sampled on the 3 transects of Q2 with ceramic suction cups having a pore size of 1 µm installed at 15 cm depth in the mineral soil. On each transect 3 replicates were collected and bulked to one sample per plot and collection interval. Samples were immediately stored at -20 °C until transport in frozen state to Germany or to Switzerland for concentration measurements.

Litter decomposition of Graffenrieda leaves was measured at the 2000 and 1000m sites. NaCl was applied every week, and total litter mass loss was determined after 6 months. The independent effects of fauna and litter were determined via diffeent mesh sizes.