Stefano Manzoni, Magnus Lindh, Stefanie Hoeber, Martin Weih
The dataset contains biomass and nitrogen content data of two Salix species (S. dasyclados Wimm. var. ‘Loden’, and S. schwerinii E. Wolf. x S. viminalis L. var. ‘Tora’), grown in a pot experiment to assess the effects of watering frequency, nutrient availability, and plant diversity level.
The data was collected to test the hypotheses that: i) lower nutrient and more intermittent water availability decrease biomass while increasing allocation to roots, allowing to save soil water and reduce water stress, and ii) higher diversity promotes efficient resource acquisition, especially under lower nutrient and more intermittent water availability, resulting in higher diversity effects. The first hypothesis was confirmed by the data analysis, whereas the second hypothesis was not confirmed.
The data was collected in a pot experiment at the Swedish University of Agricultural Sciences, Uppsala, Sweden. Plants were grown for two years (2018 – 2019) in a full factorial design with six replicate pots per treatment.
Download data
Citation
Stefano Manzoni, Magnus Lindh, Stefanie Hoeber, Martin Weih (2021) Salix biomass and nitrogen content measured in a pot experiment, Uppsala, Sweden, 2018 – 2019. Dataset version 1. Bolin Centre Database. https://doi.org/10.17043/manzoni-2021-salix-1
References
Lindh M, Hoeber S, Weih M, Manzoni S (2022) Interactions of nutrient and water availability control growth and diversity effects in a Salix two-species mixture. Ecohydrology, e2401. https://doi.org/10.1002/eco.2401
Data description
One Excel spreadsheet file, including one cover page with citation information and data use conditions, and two data sheets:
- belowground (root) data
- aboveground (leaf and stem) data.
Headings describe the data and report the units.
Details on the water and nutrient treatments are presented in the related publication.
Comments
The pot experiment was designed to assess the effects of watering frequency (twice a week vs. once a week for set total water volume), nutrient availability (low vs. high fertilization), and plant diversity level (monoculture vs. mixture of the two species).
The data was collected in a pot experiment in a full factorial design with six replicate pots per treatment (each planted with six cuttings). Biomass was measured by weighing roots, stems, and leaves after drying. Nitrogen contents were measured in an external laboratory. Specific leaf area was estimated by weighing and scanning leaves. All data are presented on a pot basis (summed biomass or average nitrogen contents and specific leaf area).
Meteorological and soil moisture data, as well as additional plant morphological data are described in the related publication and available upon request.