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Domingues, Rita B; Guerra, Catia C; Barbosa, Ana B; Brotas, Vanda; Galvão, Helena M (2014): Effects of ultraviolet radiation and CO2 increase on winter phytoplankton assemblages in a temperate coastal lagoon [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.836111, Supplement to: Domingues, RB et al. (2014): Effects of ultraviolet radiation and CO2 increase on winter phytoplankton assemblages in a temperate coastal lagoon. Journal of Plankton Research, 36(3), 672-684, https://doi.org/10.1093/plankt/fbt135

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Abstract:
Increases in ultraviolet radiation (UVR) and CO2 affect phytoplankton growth and mortality in a variety of different ways. However, in situ responses of natural phytoplankton communities to climate change, as well as its effects on phytoplankton annual cycles, are still largely unknown. Although temperature and UVR have been increasing in temperate latitudes during winter, this season is still particularly neglected in climate change studies, being considered a non-active season regarding phytoplankton growth and production. Additionally, coastal lagoons are highly productive ecosystems and very vulnerable to climate change. This study aims, therefore, to evaluate the short-term effects of increased UVR and CO2 on the composition and growth of winter phytoplankton assemblages in a temperate coastal lagoon. During winter 2012, microcosm experiments were used to evaluate the isolated and combined effects of UVR and CO2, under ambient and high CO2 treatments, exposed to ambient UV levels and photosynthetically active radiation (PAR), or to PAR only. Phytoplankton composition, abundance, biomass and photosynthetic parameters were evaluated during the experiments. Significant changes were observed in the growth of specific phytoplankton groups, leading to changes in community composition. The cyanobacterium Synechococcus was dominant at the beginning of the experiment, but it was negatively affected by UVR and CO2. Diatoms clearly benefited from high CO2 and UVR, particularly Thalassiosira. Despite the changes observed in specific phytoplankton groups, growth and production of the whole phytoplankton community did not show significant responses to UVR and/or CO2.
Keyword(s):
Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Coast and continental shelf; Community composition and diversity; Entire community; Growth/Morphology; Light; North Atlantic; Pelagos; Primary production/Photosynthesis; Temperate
Further details:
Lavigne, Héloïse; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0 [webpage]. https://cran.r-project.org/package=seacarb
Project(s):
Ocean Acidification International Coordination Centre (OA-ICC)
Comment:
In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne et al, 2014) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation is 2014-09-19.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1SpeciesSpeciesDomingues, Rita B
2TableTabDomingues, Rita B
3FigureFigDomingues, Rita B
4TreatmentTreatDomingues, Rita B
5Growth rateµ1/dayDomingues, Rita Bnet
6Growth rate, standard errorµ std e±Domingues, Rita Bnet
7Photosynthetic efficiency, carbon productionalphamg C/(µE/m2/s)/mg Chl/hDomingues, Rita B
8Photosynthetic efficiency, standard erroralpha std e±Domingues, Rita B
9Production rate, maximal, light saturated, as carbon per chlorophyll aPBmaxmg C/mg Chl a/hDomingues, Rita B
10Production rate, maximal, light saturated, as carbon normalized to chlorophyll a, standard errorPBmax std e±Domingues, Rita B
11IrradianceEµmol/m2/sDomingues, Rita Boptimal
12Irradiance, standard errorE std e±Domingues, Rita Boptimal
13Incubation durationInc durdaysDomingues, Rita B
14Cell densityCells#/mlDomingues, Rita B
15SalinitySalDomingues, Rita B
16Temperature, waterTemp°CDomingues, Rita B
17pHpHDomingues, Rita BNBS scale
18Carbon, inorganic, dissolvedDICµmol/kgDomingues, Rita B
19Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmDomingues, Rita BCalculated using seacarb
20Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
21pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale
22Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
23Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
24Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
25Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
26Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
27Alkalinity, totalATµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
28Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
29Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
663 data points

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