Mesocosm experiment on warming and acidification effects on phytoplankton composition and cell size
Cobertura |
DATE/TIME START: 2012-10-19T00:00:00 * DATE/TIME END: 2012-11-12T00:00:00 |
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Data(s) |
18/12/2014
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Resumo |
While the isolated responses of marine phytoplankton to climate warming and to ocean acidification have been studies intensively, studies on the combined effect of both aspects of Global Change are still scarce. Therefore, we performed a mesocosm experiment with a factorial combination of temperature (9 and 15°C) and pCO2 (560 ppm and 1400 ppm) with a natural autumn plankton community from the western Baltic Sea. Temporal trajectories of total biomass and of the biomass of the most important higher taxa followed similar patterns in all treatments. When averaging over the entire time course, phytoplankton biomass decreased with warming and increased with CO2 under warm conditions. The contribution of the two dominant higher phytoplankton taxa (diatoms and cryptophytes) and of the 4 most important species (3 diatoms, 1 cryptophyte) did not respond to the experimental treatments. Taxonomic composition of phytoplankton showed only responses at the level of subdominant and rare species. Phytoplankton cell sizes increased with CO2 addition and decreased with warming. Both effects were stronger for larger species. Warming effects were stronger than CO2 effects and tended to counteract each other. Phytoplankton communities without calcifying species and exposed to short-term variation of COO2 seem to be rather resistant to ocean acidification. |
Formato |
application/zip, 4 datasets |
Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.840845 doi:10.1594/PANGAEA.840845 |
Idioma(s) |
en |
Publicador |
PANGAEA |
Relação |
Paul, Carolin; Garzke, Jessica (2014): Mesocosm experiment on warming and acidification effects in 2012: Alkalinity and dissolved inorganic carbon. doi:10.1594/PANGAEA.840840 Paul, Carolin; Garzke, Jessica (2014): Mesocosm experiment on warming and acidification effects in 2012: pH, temperature and salinity. doi:10.1594/PANGAEA.840836 Material and methods BIOACID Experiment I, 2012 (URI: hdl:10013/epic.44714.d001) |
Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
Fonte |
Supplement to: Sommer, Ulrich; Paul, Carolin; Moustaka-Gouni, Maria (2015): Warming and Ocean Acidification Effects on Phytoplankton-From Species Shifts to Size Shifts within Species in a Mesocosm Experiment. PLoS ONE, 10(5), e0125239, doi:10.1371/journal.pone.0125239 |
Palavras-Chave | #BIOACID; Biological Impacts of Ocean Acidification; Cell biovol; Cell biovolume; Cell density; Cells; Cell size; Cerataulina; Cerataulina planktonica; Ceratium fusus; Ceratium lineatum; Ceratium tripos; Chaetoceros curvisetus; CO2; Coscinodiscus sp.; Cryptophyta, cell biovolume; Cryptophyta cell biovol; Cylindrotheca closterium; Dactyliosolen; Dactyliosolen fragilissimus; Date/Time; DATE/TIME; Day of experiment; diameter; Diameter; Diatom, cell biovolume; Diatom cell biovol; Ditylum brightwellii; DOE; Equivalent sherical diamenter; Guinardia; Guinardia flaccida; height; ID; Identification; Label; Name; Pigment; Proboscia alata; Prorocentrum micans; Pseudonitzschia; R1:picoplankton without phycoerythrin, Ostreococcus sp; R2:picoplankton without phycoerythrin, Bathycoccus sp.; R3:picoplankton with phycoerythrin, Synechococcus-type; R4:Cyanobacterium with phycoerythrin Synechococcus-type; R5:phycoerythrin containing eukaryote Plagioselmis; R6:Chrysochromulina, possibly two spp.; R7:Cyanobacterium, with allophycocynin, no phycoerythrin, Synechocytis-type; R8 :not matched to microscopically identified species; Rare species, means across all mesocosms; Rhizosolenia; Rhizosolenia setigera; Sample code/label; Skeletonema; Skeletonema marinoi; Species; Stauroneis constricta; Teleaulax; Teleaulax amphioxeia; Temperature; Thalassionema; Thalassiosira; Thalassiosira nordenskioldii; Thalssionema nitzschioides; total cell number per mL; total length; Treatm; Treatment; Ø |
Tipo |
Dataset |