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Experiment: Combined effects of CO2, temperature, irradiance and time on the physiological performance of Chondrus crispus (Rhodophyta)

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.

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Cite this as

Sarker, Mohammed Yusuf (2012). Dataset: Experiment: Combined effects of CO2, temperature, irradiance and time on the physiological performance of Chondrus crispus (Rhodophyta). https://doi.org/10.1594/PANGAEA.830139

DOI retrieved: 2012

Additional Info

Field Value
Imported on November 29, 2024
Last update November 29, 2024
License CC-BY-3.0
Source https://doi.org/10.1594/PANGAEA.830139
Author Sarker, Mohammed Yusuf
Given Name Mohammed Yusuf
Family Name Sarker
Source Creation 2012
Publication Year 2012
Resource Type text/tab-separated-values - filename: Sarker_2012
Subject Areas
Name: BiologicalClassification

Name: Biosphere

Name: Chemistry

Name: Oceans

Related Identifiers
Title: Combined effects of CO2, temperature, irradiance and time on the physiological performance of Chondrus crispus (Rhodophyta)
Identifier: https://doi.org/10.1515/bot-2012-0143
Type: DOI
Relation: IsSupplementTo
Year: 2013
Source: Botanica Marina
Authors: Sarker Mohammed Yusuf , Bartsch Inka , Olischläger Mark , Gutow Lars , Wiencke Christian .

Title: seacarb: seawater carbonate chemistry with R. R package version 2.4
Identifier: https://cran.r-project.org/package=seacarb
Type: DOI
Relation: References
Year: 2011
Authors: Lavigne Héloïse , Gattuso Jean-Pierre .