<div><p>See: <a href="http://bcodata.whoi.edu/Ocean_Acidification_and_Aggregation/Series5_Acclimatization_Data_Methods.pdf" target="_blank">Series 5: Acclimatization Data - Methods</a></p></div>
Series 5: pCO2 as one of multiple stressors for Thalassiosira weissflogii - Carbonate system: future treatments
<div><p>The increase in partial pressure of CO2 (pCO2) is causing ocean acidification, which impacts the<br />
growth rates and elemental composition of phytoplankton. Here, shifts in growth rates and cell<br />
quotas of Thalassiosira weissflogii grown under a variety of different temperatures, irradiances,<br />
and pCO2 conditions are discussed. The presented data suggest that acclimatization times of<br />
exponentially growing diatoms to environmental perturbations may be weeks to months, rather<br />
than days to weeks. The response of acclimatized T. weissflogii to pCO2 depended on irradiance<br />
and temperature and was highly interactive, non-linear, and non-uniform. A very significant<br />
negative effect of pCO2 was observed under growth conditions that were light-, and<br />
temperature-limited; a smaller, but still significant negative response was seen under<br />
light-limiting growth conditions, whereas pCO2 did not affect growth rates of T. weissflogii under<br />
light-saturated growth conditions. Cell quotas of organic carbon, nitrogen, or chlorophyll a were<br />
linked to growth rate. The cell-normalized production of transparent exopolymer particles (TEP)<br />
was positively correlated with POC cell quotas, with some minor impact of irradiance and pCO2<br />
on the relationship. This correlation of TEP production with carbon cell quotas is consistent with<br />
the hypothesis that extracellular release is an inherent component of cell metabolism. Results<br />
suggest that elevated pCO2 functions as an (additional) metabolic stressor for T. weissflogii and<br />
that the interaction of different stressors determines growth rates and cell characteristics in a<br />
complex, non-linear relationship.</p></div>
Series 5: pCO2 as one of multiple stressors for Thalassiosira weissflogii - Carbonate system: future treatments
<div><p>See: <a href="http://bcodata.whoi.edu/Ocean_Acidification_and_Aggregation/Series5_Acclimatization_Data_Methods.pdf" target="_blank">Series 5: Acclimatization Data - Methods</a></p>
<p><strong>BCO-DMO Processing Notes</strong><br />
Original file: "Acclimat Datafor BCODMO.xlsx" contributed by Uta Passow<br />
Sheet: "raw carbonateSys"<br />
- Approx Lat/Lon of Passow Lab appended to enable data discovery in MapServer<br />
- "nd" (no data) inserted into blank cells<br />
- Parameter names edited to conform to BCO-DMO naming convention found at <a href="http://usjgofs.whoi.edu/naming-guidelines.html" target="_blank">Choosing Parameter Name</a></p></div>
540188
Series 5: pCO2 as one of multiple stressors for Thalassiosira weissflogii - Carbonate system: future treatments
2014-11-19T19:16:38-05:00
2014-11-19T19:16:38-05:00
2023-07-07T16:10:26-04:00
urn:bcodmo:dataset:540188
pCO2 as one of multiple stressors for Thalassiosira weissflogii - Carbonate system - future treatments from UCSB MSI Passow Lab from 2009 to 2010 (OA - Ocean Acidification and Aggregation project)
false
Passow, U., Laws, E. (2014) pCO2 as one of multiple stressors for Thalassiosira weissflogii - Carbonate system - future treatments from UCSB MSI Passow Lab from 2009 to 2010 (OA - Ocean Acidification and Aggregation project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 13 November 2014) Version Date 2014-11-13 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/540188 [access date]
false
13 November 2014
false
2014-11-13
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