RT Journal Article
T1 Temperature fluctuation attenuates the effects of warming in estuarine microbial plankton communities
A1 Jabalera Cabrerizo, Marco
A1 Marañón Sainz, Emilio
A1 Fernandez Gonzalez, Cristina
A1 Alonso Núñez, Adrián
A1 Larsson, Henrik
A1 Aranguren Gassis, María
K1 2417.05 Biología Marina
K1 2502.9 Cambio climático
AB Sea surface warming has the potential to alter the diversity, trophic organization and productivity of marine communities. However, it is unknown if temperature fluctuations that ecosystems naturally experience can alter the predicted impacts of warming. We address this uncertainty by exposing a natural marine plankton community to warming conditions (+3°C) under a constant vs. fluctuating (±3°C) temperature regime using an experimental mesocosm approach. We evaluated changes in stoichiometry, biomass, nutrient uptake, taxonomic composition, species richness and diversity, photosynthetic performance, and community metabolic balance. Overall, warming had a stronger impact than fluctuating temperature on all biological organization levels considered. As the ecological succession progressed toward post-bloom, the effects of warming on phytoplankton biomass, species richness, and net community productivity intensified, likely due to a stimulated microzooplankton grazing, and the community metabolic balance shifted toward a CO2 source. However, fluctuating temperatures reduced the negative effects of warming on photosynthetic performance and net community productivity by 40%. Our results demonstrate that temperature fluctuations may temper the negative effect of warming on marine net productivity. These findings highlight the need to consider short-term thermal fluctuations in experimental and modeling approaches because the use of constant warming conditions could lead to an overestimation of the real magnitude of climate change impacts on marine ecosystems.
PB Frontiers in Marine Science
SN 22967745
YR 2021
FD 2021-04-09
LK http://hdl.handle.net/11093/2526
UL http://hdl.handle.net/11093/2526
LA eng
NO Frontiers in Marine Science, 8, 656282 (2021)
NO Ministerio de Ciencia, Innovación y Universidades | Ref. FJCI2017-32318
DS Investigo
RD 06-dic-2023