Seawater carbonate chemistry, calcification, primary production and respiration of a temperate rhodolith Lithothamnion corallioides in a laboratory experiment


Autoria(s): Noisette, Fanny; Duong, Gwendoline; Six, Christophe; Davoult, Dominique; Martin, Sophie
Cobertura

LATITUDE: 48.296110 * LONGITUDE: -4.416390 * DATE/TIME START: 2010-12-15T00:00:00 * DATE/TIME END: 2010-12-30T00:00:00

Data(s)

18/03/2013

Resumo

Coralline algae are considered among the most sensitive species to near future ocean acidification. We tested the effects of elevated pCO2 on the metabolism of the free-living coralline alga Lithothamnion corallioides ("maerl") and the interactions with changes in temperature. Specimens were collected in North Brittany (France) and grown for 3 months at pCO2 of 380 (ambient pCO2), 550, 750, and 1000 µatm (elevated pCO2) and at successive temperatures of 10°C (ambient temperature in winter), 16°C (ambient temperature in summer), and 19°C (ambient temperature in summer +3°C). At each temperature, gross primary production, respiration (oxygen flux), and calcification (alkalinity flux) rates were assessed in the light and dark. Pigments were determined by HPLC. Chl a, carotene, and zeaxanthin were the three major pigments found in L. corallioides thalli. Elevated pCO2 did not affect pigment content while temperature slightly decreased zeaxanthin and carotene content at 10°C. Gross production was not affected by temperature but was significantly affected by pCO2 with an increase between 380 and 550 µatm. Light, dark, and diel (24 h) calcification rates strongly decreased with increasing pCO2 regardless of the temperature. Although elevated pCO2 only slightly affected gross production in L. corallioides, diel net calcification was reduced by up to 80% under the 1,000 µatm treatment. Our findings suggested that near future levels of CO2 will have profound consequences for carbon and carbonate budgets in rhodolith beds and for the sustainability of these habitats.

Formato

text/tab-separated-values, 5796 data points

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.830639

doi:10.1594/PANGAEA.830639

Idioma(s)

en

Publicador

PANGAEA

Relação

Lavigne, Héloise; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4. https://cran.r-project.org/package=seacarb

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

Supplement to: Noisette, Fanny; Duong, Gwendoline; Six, Christophe; Davoult, Dominique; Martin, Sophie (2013): Effects of elevated pCO2 on the metabolism of a temperate rhodolith Lithothamnion corallioides grown under different temperatures. Journal of Phycology, 49(4), 746-757, doi:10.1111/jpy.12085

Palavras-Chave #algae; Alkalinity, total; Alkalinity, total, standard error; Alkalinity anomaly technique (Smith and Key, 1975); Aquarium number; Aragonite saturation state; Aragonite saturation state, standard error; Bicarbonate ion; calcification; Calcification rate of calcium carbonate; Calcite saturation state; Calculated; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard error; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Carotene; Chlorophyll a; EPOCA; European Project on Ocean Acidification; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gross photosynthesis rate, oxygen; Irradiance; laboratory; multiple factors; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error; pH; pH, standard error; physiology; Potentiometric; primary production; Replicates; respiration; Respiration rate, oxygen; Roscanvel; Salinity; Salinity, standard error; Species; temperature; Temperature, water; Temperature, water, standard error; Zeaxanthin
Tipo

Dataset