Citation:

bot-2012-0143

Name: Experiment: Combined effects of CO2, temperature, irradiance and time on the physiological performance of Chondrus crispus (Rhodophyta)
Creator: Mohammed Yusuf Sarker
Published: 2012
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Benthos; Bottles or small containers/Aquaria (<20 L); Chondrus crispus; Coast and continental shelf; Growth/Morphology; Laboratory experiment; Light; Macroalgae; North Atlantic; Plantae; Primary production/Photosynthesis; Rhodophyta; Single species; Temperate; Temperature

Always quote citation above when using data! You can download the citation in several formats below.

RIS Citation BibTeX Citation Text Citation Facebook Twitter

Abstract:

In natural environments, marine biotas are exposed to a variety of simultaneously acting abiotic factors. Among these, temperature, irradiance and CO2 availability are major factors influencing the physiological performance of marine macroalgae. To test whether elevated levels of CO2 may remediate the otherwise reduced performance of uncalcified seaweeds under the influence of other stressful abiotic factors, we performed multifactorial experiments with the red alga Chondrus crispus from Helgoland (North Sea) with two levels of CO2, temperature and irradiance: low and high pCO2 levels were tested in combination with either (1) optimal and low irradiances or (2) optimal and sub-lethal high temperatures for growth. Performance of C. crispus was evaluated as biomass increase and relative growth rates (RGR), gross photosynthesis and pigment content. Acclimations of growth and photosynthesis were measured after 4 and 8 days. Acclimation time was crucial for elucidating single or combined CO2 effects on growth and photosynthesis. Signifi- cant CO2 effects became evident only in combination with either elevated temperature or reduced irradiance. Growth and photosynthesis had divergent patterns: RGR and biomass significantly increased only under a combination of high pCO2 and elevated temperature; gross photosynthesis was significantly reduced under high pCO2 conditions at low irradiance. Pigment content varied in response to irradiance and temperature, but was independent of pCO2.

Keyword(s):

Benthos; Bottles or small containers/Aquaria (<20 L); Chondrus crispus; Coast and continental shelf; Growth/Morphology; Laboratory experiment; Light; Macroalgae; North Atlantic; Plantae; Primary production/Photosynthesis; Rhodophyta; Single species; Temperate; Temperature

Further details:

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

Project(s):

Biological Impacts of Ocean Acidification (BIOACID)

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 and Gattuso, 2011) 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 by seacarb is 2014-02-11.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Species	Species		Sarker, Mohammed Yusuf
2	Experiment	Exp		Sarker, Mohammed Yusuf
3	Treatment	Treat		Sarker, Mohammed Yusuf
4	Replicate	Repl		Sarker, Mohammed Yusuf
5	Incubation duration	Inc dur	days	Sarker, Mohammed Yusuf
6	Mass	Mass	g	Sarker, Mohammed Yusuf		Fresh weight
7	Temperature, water	Temp	°C	Sarker, Mohammed Yusuf
8	Irradiance	E	µmol/m²/s	Sarker, Mohammed Yusuf		cultural condition
9	Growth rate	µ	%/day	Sarker, Mohammed Yusuf
10	Irradiance	E	µmol/m²/s	Sarker, Mohammed Yusuf		measuring condition
11	Net photosynthesis rate, oxygen	PN O2	µmol/g/h	Sarker, Mohammed Yusuf
12	Salinity	Sal		Sarker, Mohammed Yusuf
13	pH	pH		Sarker, Mohammed Yusuf		NBS scale
14	Alkalinity, total	AT	µmol/kg	Sarker, Mohammed Yusuf
15	Carbon dioxide, partial pressure	pCO2	µatm	Sarker, Mohammed Yusuf
16	Bicarbonate ion	[HCO3]-	µmol/kg	Sarker, Mohammed Yusuf
17	Carbon dioxide	CO2	µmol/kg	Sarker, Mohammed Yusuf
18	Carbonate ion	[CO3]2-	µmol/kg	Sarker, Mohammed Yusuf
19	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
20	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	total scale
21	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
22	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
23	Fugacity of carbon dioxide (water) at sea surface temperature (wet air)	fCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
24	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
25	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
26	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
27	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
28	Calcite saturation state	Omega Cal		Yang, Yan	Calculated 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:

7680 data points

Download Data

Download dataset as tab-delimited text — use the following character encoding:

View dataset as HTML (shows only first 2000 rows)