de.pangaea.dataset971327 und de.pangaea.dataset971329 dataset PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact 2026-07-10T14:45:51Z https://doi.pangaea.de/10.1594/PANGAEA.971327 <gco:CharacterString>Log response ratio of observed versus expected growth rates of Antarctic phytoplankton in response to temperature and nitrogen:phosphorus supply interactions</gco:CharacterString> 2024-10-29T10:18:16 publication https://doi.org/10.1594/PANGAEA.971327 Plum, Christoph
c.plum@uni-oldenburg.de
https://orcid.org/0000-0002-2231-1315 information author Gerhard, Miriam
miriam.libertad.gerhard@uni-oldenburg.de
https://orcid.org/0000-0002-0472-9435 information author Smykala, Mike
mike.jan.smykala@uni-oldenburg.de
https://orcid.org/0009-0004-7439-8514 information author PANGAEA
info@pangaea.de
https://www.pangaea.de/ information publisher tableDigital Data were obtained from a laboratory growth experiment conducted from April to May 2021 at the Institute for Chemistry and Biology of the Marine Environment (University of Oldenburg). Three Antarctic phytoplankton species (Chaetoceros simplex, Phaeocystis antarctica (single cell culture) and Geminigera cryophila) were grown in monocultures and a mixture of all three species. We used a factorial design including four different N/P treatments (control plus three different N/P levels) and 10 different temperatures (-2, -1, 0, 1, 2, 3, 4, 6, 8 and 10°C). The detailed experimental setup is explained in doi:10.1594/PANGAEA.971329. In order to analyze whether the temperature and nutrient response of the mixed assemblage differs from expectations based on the monoculture performance, we calculated the log response ratio between the observed specific growth rate (µobs) of the mixed phytoplankton assemblage and the expected growth rate based on monocultures (µexp) as ln(µobs/µexp). Therefore we calculated an abundance weighted specific growth rate for the expected performance in the mixed assemblage (µexp) based on the monoculture performance as µexp = (a1*µ1) + (a2*µ2) + (a3*µ3) / (a1+a2+a3) where a is the abundance of each species at exponential growth in the mixed assemblage and µ is the specific growth rate of the corresponding monoculture. Positive deviations from 0 indicate higher observed growth in the mixed assemblage (µobs) than expected from monoculture performance (µexp). completed Plum, Christoph
c.plum@uni-oldenburg.de
https://orcid.org/0000-0002-2231-1315 information principalInvestigator Diatom ecological stoichiometry Geminigera cryophila Laboratory experiment Nitrogen Phaeocystis antarctica Phosphorus Southern Ocean Temperature theme <gco:CharacterString>PANGAEA Keyword List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation The experiment started at 2021-04-02T10:00 and ended at 2021-05-19T12:00 . Type of study thematicClassification Taxon/taxa thematicClassification Treatment: temperature physicalMeasurement °C °C Treatment: nitrogen/phosphorus ratio thematicClassification molar N:P supply Experimental treatment thematicClassification "P addition", "N addition", "N and P addition", Control Treatment: nitrogen physicalMeasurement Nitrogen supply µmol/l µmol/l Treatment: phosphorus physicalMeasurement Phosphorus supply µmol/l µmol/l Replicate thematicClassification Expected growth rate, linear physicalMeasurement Calculated; specific growth rate 1/day 1/day Observed growth rate, linear physicalMeasurement Calculated; specific growth rate 1/day 1/day Log response ratio, observed versus expected growth rate, linear thematicClassification Calculated; LRR2 text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.971327?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. Supplement to <gco:CharacterString>Nutrient-dependent thermal response in growth and stoichiometry of Antarctic phytoplankton</gco:CharacterString> 2025-01-01 publication https://doi.org/10.1002/lno.70045 Smykala, Mike
mike.jan.smykala@uni-oldenburg.de
https://orcid.org/0009-0004-7439-8514 information author Gerhard, Miriam
miriam.libertad.gerhard@uni-oldenburg.de
https://orcid.org/0000-0002-0472-9435 information author Plum, Christoph
c.plum@uni-oldenburg.de
https://orcid.org/0000-0002-2231-1315 information author documentDigital Limnology and Oceanography 70(6) 1709-1724