@misc{10481/96440,
year = {2024},
month = {7},
url = {https://hdl.handle.net/10481/96440},
abstract = {Climate change increases the need to understand the effect of predicted future temperature and nutrient scenarios on marine phytoplankton. However, experimental studies addressing the effects of both drivers use a variety of design approaches regarding their temperature change rate and nutrient supply regimes. This study combines a systematic literature map to identify the existing bias in the experimental design of studies evaluating the phytoplankton response to temperature change, with a laboratory experiment. The experiment was designed to quantify how different temperature levels (6°C, 12°C, and 18°C), temperature regimes (abrupt vs. gradual increase), timings of nutrient addition (before or after the temperature change) and nutrient regimes (limiting vs. balanced) alter the growth and stoichiometry of a natural marine phytoplankton community. The systematic map revealed three key biases in marine global change experiments: (1) 66% of the studies do not explicitly describe the experimental temperature change or nutrient regime, (2) 84% applied an abrupt temperature exposure, and (3) only 15% experimentally manipulated the nutrient regime. Our experiment demonstrated that the identified biases in experimental design toward abrupt temperature exposure induced a short-term growth overshoot compared to gradually increasing temperatures. Additionally, the timing of nutrient availability strongly modulated the direction of the temperature effect and strength of growth enhancement along balanced N : P supply ratios. Our study stresses that the rate of temperature change, the timing of nutrient addition and the N : P supply ratio should be considered in experimental planning to produce ecologically relevant results as different setups lead to contrasting directions of outcome.},
organization = {AQUACOSM-plus (Project No. 871081) is funded by the European Commission EU H2020-INFRAIA},
organization = {Juan de la Cierva-Incorporacion (IJC2019- 040850-I) contract},
organization = {TITAN project (PID2022-136280NA-I00) funded by Spanish Ministry of Science and Innovation (MCIN/AEI/10.13039/501100011033/ and FEDER)},
organization = {Captación, Incorporación y Movilidad de Capital Humano de I+D+i contract funded by Junta de Andalucía (POSTDOC-21-00044)},
organization = {Programa de proyectos de investigación para la incorporación de jóvenes doctores a nuevas líneas de investigación at University of Granada (Ref. No. 15)},
organization = {Open Access funding enabled and organized by Projekt DEAL},
publisher = {Happe, A., Ahme, A., Cabrerizo, M.J., Gerhard, M., John, U. and Striebel, M. (2024), The experimental implications of the rate of temperature change and timing of nutrient availability on growth and stoichiometry of a natural marine phytoplankton community. Limnol Oceanogr, 69: 1769-1781. https://doi.org/10.1002/lno.12613},
title = {The experimental implications of the rate of temperature change and timing of nutrient availability on growth and stoichiometry of a natural marine phytoplankton community},
doi = {10.1002/lno.12613},
author = {Happe, Anika and Ahme, Antonia and Jabalera Cabrerizo, Marco and Gerhard, Miriam and John, Uwe and Striebel, Maren},
}