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)
<p>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 <em>Thalassiosira weissflogii</em> grown under a variety of different tempera...
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Biological and Chemical Oceanography Data Management Office (BCO-DMO)
2014
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dataone:sha256:90ca442d0966884d9d81e7e6083b666568ecb8edc28b31dedbca3fb18056349c 2024-06-03T18:47:06+00:00 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) Uta Passow Edward Laws ENVELOPE(-119.842,-119.842,34.4126,34.4126) 2014-11-13T00:00:00Z https://search.dataone.org/view/sha256:90ca442d0966884d9d81e7e6083b666568ecb8edc28b31dedbca3fb18056349c unknown Biological and Chemical Oceanography Data Management Office (BCO-DMO) oceans Dataset 2014 dataone:urn:node:BCODMO 2024-06-03T18:19:24Z <p>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 <em>Thalassiosira weissflogii</em> 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 <em>T. weissflogii</em> 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 <em>T. weissflogii</em> under light-saturated growth conditions. Cell quotas of organic carbon, nitrogen, or chlorophyll <em>a</em> 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<br /> suggest that elevated pCO2 functions as an (additional) metabolic stressor for <em>T. weissflogii</em> and that the interaction of different stressors determines growth rates and cell characteristics in a complex, non-linear relationship.</p> Dataset Ocean acidification Biological and Chemical Oceanography Data Management Office (BCO-DMO) (via DataONE) ENVELOPE(-119.842,-119.842,34.4126,34.4126) |
institution |
Open Polar |
collection |
Biological and Chemical Oceanography Data Management Office (BCO-DMO) (via DataONE) |
op_collection_id |
dataone:urn:node:BCODMO |
language |
unknown |
topic |
oceans |
spellingShingle |
oceans Uta Passow Edward Laws 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) |
topic_facet |
oceans |
description |
<p>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 <em>Thalassiosira weissflogii</em> 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 <em>T. weissflogii</em> 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 <em>T. weissflogii</em> under light-saturated growth conditions. Cell quotas of organic carbon, nitrogen, or chlorophyll <em>a</em> 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<br /> suggest that elevated pCO2 functions as an (additional) metabolic stressor for <em>T. weissflogii</em> and that the interaction of different stressors determines growth rates and cell characteristics in a complex, non-linear relationship.</p> |
format |
Dataset |
author |
Uta Passow Edward Laws |
author_facet |
Uta Passow Edward Laws |
author_sort |
Uta Passow |
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) |
title_short |
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) |
title_full |
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) |
title_fullStr |
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) |
title_full_unstemmed |
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) |
title_sort |
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) |
publisher |
Biological and Chemical Oceanography Data Management Office (BCO-DMO) |
publishDate |
2014 |
url |
https://search.dataone.org/view/sha256:90ca442d0966884d9d81e7e6083b666568ecb8edc28b31dedbca3fb18056349c |
op_coverage |
ENVELOPE(-119.842,-119.842,34.4126,34.4126) |
long_lat |
ENVELOPE(-119.842,-119.842,34.4126,34.4126) |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
_version_ |
1800875999109316608 |