Data from: Warming reduces the effects of enrichment on stability and functioning across levels of organization in an aquatic microbial ecosystem
Tabi, Andrea, University of Zurich
Petchey, Owen, University of Zurich
Pennekamp, Frank, University of Zurich
Published Dec 18, 2019 on Dryad.
Cite this dataset
Tabi, Andrea; Petchey, Owen; Pennekamp, Frank (2019). Data from: Warming reduces the effects of enrichment on stability and functioning across levels of organization in an aquatic microbial ecosystem [Dataset]. Dryad. https://doi.org/10.5061/dryad.5470b62
Warming and nutrient enrichment are major environmental factors shaping ecological dynamics. However, cross-scale investigation of their combined effects by linking theory and experiments is lacking. We collected data from aquatic microbial ecosystems investigating the interactive effects of warming (constant and rising temperatures) and enrichment across levels of organization and contrasted them with community models based on metabolic theory. We found high agreement between our observations and theoretical predictions: we observed in many cases the predicted antagonistic effects of high temperature and high enrichment across levels of organization. Temporal stability of total biomass decreased with warming but did not differ across enrichment levels. Constant and rising temperature treatments with identical mean temperature did not show qualitative differences. Overall, we conclude that model and empirical results are in broad agreement due to robustness of the effects of temperature and enrichment, that the mitigating effects of temperature on effects of enrichment may be common, and that models based on metabolic theory provide qualitatively robust predictions of the combined ecological effects of enrichment and temperature.
Data file contains biomass data for all species and the area measurement for Colpidium and Dexiostoma. Column descriptions: - samplingday: number of days - temp_treat: temperature treatment - nutrient_treat: nutrient treatment - label: label of the microcosm - species: species in the experiment - treatment: temperature and nutrient treatment combination - Total_BM: total biomass of the microcosm which is the sum of the biomass of bacteria and the protist species - BM: species biomass - Relative_BM: relative biomass calculated as the species biomass divided by the total biomass - mean_area: area of the species measured with video processing techniques (R package BEMOVI (version 1.0.2)) - DO: dissolved oxygen, Rate_of_biotic_act: intrinsic growth rate estimated from the logistic growth model by fitting to the dissolved oxygen time series.