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OAS accession Detail for 0294409
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Title: PCO2 as one of multiple stressors for Thalassiosira weissflogii - Carbonate system - ambient treatments - from UCSB MSI Passow Lab from 2009 to 2010 (OA - Ocean Acidification and Aggregation project) (NCEI Accession 0294409)
Abstract: This dataset contains biological, chemical, optical, and physical data collected at UCSB MSI Passow during deployment lab_UCSB_MSI_Passow on 2014-11-13. These data include dissolved inorganic Carbon, irradiance level set for incubation experiments, pH, salinity, temp_incub, and total alkalinity (TA). These data were collected by Edward Laws of Louisiana State University and Uta Passow of University of California-Santa Barbara as part of the "Will Ocean Acidification Diminish Particle Aggregation and Mineral Scavenging, Thus Weakening the Biological Pump? (OA - Ocean Acidification and Aggregation)" project and "Ocean Carbon and Biogeochemistry (OCB)" and "Science, Engineering and Education for Sustainability NSF-Wide Investment (SEES): Ocean Acidification (formerly CRI-OA) (SEES-OA)" programs. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2023-04-24.

The following is the text of the dataset description provided by BCO-DMO:

Series 5: pCO2 as one of multiple stressors for Thalassiosira weissflogii - Carbonate system: ambient treatments

Dataset Description:
The increase in partial pressure of CO2 (pCO2) is causing ocean acidification, which impacts the growth rates and elemental composition of phytoplankton. Here, shifts in growth rates and cell quotas of Thalassiosira weissflogii grown under a variety of different temperatures, irradiances, and pCO2 conditions are discussed. The presented data suggest that acclimatization times of exponentially growing diatoms to environmental perturbations may be weeks to months, rather than days to weeks. The response of acclimatized T. weissflogii to pCO2 depended on irradiance and temperature and was highly interactive, non-linear, and non-uniform. A very significant negative effect of pCO2 was observed under growth conditions that were light-, and temperature-limited; a smaller, but still significant negative response was seen under light-limiting growth conditions, whereas pCO2 did not affect growth rates of T. weissflogii under light-saturated growth conditions. Cell quotas of organic carbon, nitrogen, or chlorophyll a were linked to growth rate. The cell-normalized production of transparent exopolymer particles (TEP) was positively correlated with POC cell quotas, with some minor impact of irradiance and pCO2 on the relationship. This correlation of TEP production with carbon cell quotas is consistent with the hypothesis that extracellular release is an inherent component of cell metabolism. Results
suggest that elevated pCO2 functions as an (additional) metabolic stressor for T. weissflogii and that the interaction of different stressors determines growth rates and cell characteristics in a complex, non-linear relationship.
Date received: 20230424
Start date: 20141113
End date: 20141113
Seanames:
West boundary: -119.842
East boundary: -119.842
North boundary: 34.413
South boundary: 34.413
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Submitting institution: Biological and Chemical Oceanography Data Management Office
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Supplementary information: Acquisition Description:
See Supplemental File " Series5_Acclimatization_Data_Methods.pdf "
Availability date:
Metadata version: 1
Keydate: 2024-06-27 20:57:40+00
Editdate: 2024-06-27 20:58:22+00