Abstract:

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.

Abstract:

Herbivory estimated as leaf area loss [cm^2] and [%] and leaf traits were generated from sun-exposed leaves of 380 tree canopies belonging to 51 tree species (7 +/- 1 tree individual per species) located within the nine 1 ha forest core plots at 1000 m (Bombuscaro), 2000 m (San Francisco), and 3000 m (Cajanuma) in the Podocarpus Nationalpark and the Reserva Biológica San Francisco in southern Ecuador between February and March in 2019.
To estimate herbivory, 20 +/- 5 leaves per tree were scanned and analyzed with the software WinFOLIA. Leaf traits were either measured conventionally with morphometrical and chemical measurement techniques or spectrally with an OceanOptics spectrometer HDX to identify the reflectance wavebands of certain molecular foliar structures.

Abstract:

Monthly time series of d13C and d15N isotope measurements in litterfall at NUMEX San Francisco between 2007 and 2009. Litterfall was collected on all 20 plots at NUMEX on 6 subplots per plot (A-F) with polyethylene mesh traps (0.6 x 0.6 m). On each plot, two of the six litterfall traps were randomly sampled monthly. 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 two collected replicates were bulked per plot and collecting interval resulting in one litterfall sample per plot and month. Samples were ground to <50 µm with a planetary ball mill (Retsch PM200, Haan, Germany) prior to isotope measurements of d13C and d15N by EA/IRMS (ThermoFisher, Bremen, Germany)

Abstract:

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.

Abstract:

Monthly time series of measured concentrations of Al, Cu, Fe, Mn, Zn, C, N, S, P, K, Na, Mg, Ca in litterfall at NUMEX San Francisco between 2007 and 2013. Litterfall was collected on all 20 plots at NUMEX on 6 subplots per plot (A-F) with polyethylene mesh traps (0.6 x 0.6 m). On each plot, two of the six litterfall traps were randomly sampled monthly. 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 two collected replicates were bulked per plot and collecting interval resulting in one litterfall sample per plot and month. 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.

Abstract:

Weekly time series of precipitation data from the San Francisco area at 2000 m a.s.l. at the measuring station FN2 located at the intersection of Camino Canal and Camino Zig-Zag. Precipitation was measured with 5 Hellmann-type pluviometers. The resulting weekly replicates of precipitation were volume-weighted and bulked to one sample per collecting interval. Electrical conductivity and pH values were measured immediately in unfiltered aliquots in the laboratory at the ECSF.

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Abstract:

Automatic observation of cloud cover by the infrared scanning Nubiscope instrument mounted on the rooftop of the ECSF station building. The geographic coverage is given by the visible sky from the installation point and roughly matches the San Francisco river catchment basin.
For technical details and capabilities of the instrument please refer to nubiscope.eu and www.knmi.nl/~wauben/Sensor/TECO2010_1(8)_Waubenetal.pdf

Abstract:

Tree species inventory of the three San Francisco Respect plots. All individual stems are listed with their identity and dbh (first inventory in 2018).

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