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   set  data   graph     files  public Aggregation of Thalassiosira weissflogii as a function of pCO2, temperature, and bacteria -
Acclimatization Phase - Carbonate System from UCSB MSI Passow Laboratory from 2009 to
2010 (OA - Ocean Acidification and Aggregation project)
   ?     I   M   background (external link) RSS BCO-DMO bcodmo_dataset_4038

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson
attribute NC_GLOBAL acquisition_description String See: [Series 4: Aggregation of Thalassiosira weissflogii -
Methods](\\"http://bcodata.whoi.edu/Ocean_Acidification_and_Aggregation
/Series4_Seebah-Methods.pdf\\")
attribute NC_GLOBAL awards_0_award_nid String 54764
attribute NC_GLOBAL awards_0_award_number String OCE-0926711
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0926711 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String Dr Donald L. Rice
attribute NC_GLOBAL awards_0_program_manager_nid String 51467
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Ocean Acidification and Aggregation
Series 4: Aggregation of Thalassiosira weissflogii as a function of pCO2, temperature and bacteria
Acclimatisation Phase - Carbonate System
Version: 05 September 2013
PIs: Passow, Seebah
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv.pl v1.0
attribute NC_GLOBAL date_created String 2013-09-05T18:31:17Z
attribute NC_GLOBAL date_modified String 2016-08-20T03:10:46Z
attribute NC_GLOBAL defaultDataQuery String &time
attribute NC_GLOBAL doi String 10.1575/1912/6845
attribute NC_GLOBAL Easternmost_Easting double -119.842
attribute NC_GLOBAL geospatial_lat_max double 34.4126
attribute NC_GLOBAL geospatial_lat_min double 34.4126
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -119.842
attribute NC_GLOBAL geospatial_lon_min double -119.842
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/4038 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL keywords String acclimatisation, bco, bco-dmo, biological, carbon, carbon dioxide, chemical, co2, data, dataset, date, day, day_of_acclimatisation, density, dic, dioxide, dmo, earth, Earth Science > Oceans > Salinity/Density > Salinity, erddap, growth, growth_rate, identifier, lab, Lab_Id, latitude, longitude, management, ocean, oceanography, oceans, office, pCO2, pH_at_25C, practical, preliminary, rate, salinity, sampling, sampling_date, science, sea, sea_water_practical_salinity, seawater, Temp, temperature, time, water
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/4038 (external link)
attribute NC_GLOBAL Northernmost_Northing double 34.4126
attribute NC_GLOBAL param_mapping String {'4038': {'Lat': 'flag - latitude', 'Lon': 'flag - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/4038/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String University of California-Santa Barbara
attribute NC_GLOBAL people_0_affiliation_acronym String UCSB-MSI
attribute NC_GLOBAL people_0_person_name String Dr Uta Passow
attribute NC_GLOBAL people_0_person_nid String 51317
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String University of California-Santa Barbara
attribute NC_GLOBAL people_1_affiliation_acronym String UCSB-MSI
attribute NC_GLOBAL people_1_person_name String Shalin Seebah
attribute NC_GLOBAL people_1_person_nid String 528318
attribute NC_GLOBAL people_1_role String Student
attribute NC_GLOBAL people_1_role_type String related
attribute NC_GLOBAL people_2_affiliation String University of California-Santa Barbara
attribute NC_GLOBAL people_2_affiliation_acronym String UCSB-MSI
attribute NC_GLOBAL people_2_person_name String Dr Uta Passow
attribute NC_GLOBAL people_2_person_nid String 51317
attribute NC_GLOBAL people_2_role String Contact
attribute NC_GLOBAL people_2_role_type String related
attribute NC_GLOBAL people_3_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_3_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_3_person_name String Stephen R. Gegg
attribute NC_GLOBAL people_3_person_nid String 50910
attribute NC_GLOBAL people_3_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_3_role_type String related
attribute NC_GLOBAL project String Will Ocean Acidification Diminish Particle Aggregation and Mineral Scavenging, Thus Weakening the Biological Pump?
attribute NC_GLOBAL projects_0_acronym String OA - Ocean Acidification and Aggregation
attribute NC_GLOBAL projects_0_description String Will Ocean Acidification Diminish Particle Aggregation and Mineral Scavenging, Thus Weakening the Biological Pump?
This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).
The pH of the ocean is predicted to decrease by 0.2-0.5 pH units in the next 50 to100 years as a result of increasing atmospheric CO2. To date almost all the research on impending ocean acidification has focused on the impacts to calcifying organisms and the carbonate system. However, ocean acidification will also affect other significant marine processes that are pH dependent.
In this project, researchers at the University of California at Santa Barbara will investigate the impact of ocean acidification on the organic carbon or 'soft tissue' biological pump. They predict that a decline in oceanic pH will result in an increase in the protonation of negatively charged substances, especially of Transparent Exopolymer Particles (TEP), the gel-like particles that provide the matrix of aggregates and bind particles together. A decreased polarity of these highly surface-active particles may reduce their "stickiness" resulting in decreased aggregation of organic-rich particles and a decreased ability of aggregates to scavenge and retain heavy ballast minerals. A reduction in aggregation will lower the fraction of POC enclosed in fast-sinking aggregates. Decreased scavenging of minerals by aggregates will result in reduced sinking velocities and consequently a decline in the fraction of material escaping degradation in the water column. Both processes ultimately reduce carbon flux to depth. The resulting weakening of the biological pump will alter pelagic ecology and potentially produce a positive feed-back pathway that further increases atmospheric CO2 concentrations.
The research team will experimentally investigate TEP-production, aggregation rates and aggregate characteristics, mineral scavenging and sinking velocity as a function of ocean acidification, because these parameters are susceptible to pH and central in determining sedimentation rate of organic carbon. They will determine potential changes in the abiotic formation of TEP or in the release rate of TEP or TEP-precursors by phytoplankton that have been adapted to increased CO2 regimes for multiple generations, up to 1000 doublings. Additionally, they will experimentally test potential changes in the aggregation rate of adapted phytoplankton and natural particles, and measure impacts on scavenging rates of ballast minerals by aggregates. Effects of various acidification levels on aggregate characteristics, including size, composition, density, and sinking velocity will also be determined. These results are expected to provide parameterization for a predictive model that will be used to investigate the impact of changing ballasting or aggregation on carbon flux.
Broader impact: Climate and environmental change are a global challenge to society. We need to know if possible positive feed back mechanisms to the biological pump will further increase atmospheric CO2 in order to prepare for and hopefully manage future climate changes.
These data are also available at Pangea

RELATED FILES:
Passow U (2012) The Abiotic Formation of Tep under Ocean Acidification Scenarios. Marine Chemistry 128-129:72-80

PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH
Bathmann U, Passow U.�"Global Erwaermung. Kohlenstoffpumpen im Ozean steuern das Klima.,"�Biologie in unserer Zeit 5,�v.5,�2010.
Benner I, Passow U.�"Utilization of organic nutrients by coccolithophores,"�Marine Ecology Progress Series,�v.404,�2010,�p. 21.
Feng Y, Hare C, Leblanc K, Rose J, Zhang Y, DiTullio G, Lee P, Wilhelm S, Rowe J, Sun J, Nemcek N, Gueguen C, Passow U, Benner I, Brown C, Hutchins D.�"Effects of increased pCO2 and temperature on the North Atlantic spring bloom. I. The phytoplankton community and biogeochemical response,"�Marine Ecology Progress Series,�v.388,�2009,�p. 13.
Gaerdes A, Iversen MH, Grossart H-P, Passow U, Ullrich M.�"Diatom associated bacteria are required for aggregation of Thalassiosira weissflogii.,"�ISME Journal,�2010,�p. 1.
Leblanc K, Hare CE, Feng Y, Berg GM, DiTullio GR, Neeley A, Benner I, Sprengel C, Beck A, Sanudo-Wilhelmy SA, Passow U, Klinck K, Rowe JM, Wilhelm SW, Brown CW, Hutchins DA.�"Distribution of calcifying and silicifying phytoplankton in relation to environmental and biogeochemical parameters during the late stages of the 2005 North East Atlantic Spring Bloom,"�Biogeosciences,�v.6,�2009,�p. 2155.
Ploug H, Terbruggen A, Kaufmann A, Wolf-Gladrow D, Passow U.�"A novel method to measure particle sinking velocity in vitro, and its comparison to three other in vitro methods.,"�Limnolgy and Oceanography Methods,�v.8,�2010,�p. 386.
Passow, U., Rocha, C.L.D.L., Fairfield, C., Schmidt, K., 2014. Aggregation as a function of pCO2 and mineral particles. Limnology and Oceanography 59 (2), 532-547.
De La Rocha, C.L., Passow, U., 2014. The biological pump. In: Turekian, K.K., Holland, H.D. (Eds.), Treatise on Geochemistry. Elsevier, Oxford, pp. 93-122.
Boyd, P., Rynearson, T., Armstrong, E., Fu, F., Hayashi, K., Hu, Z., Hutchins, D., Kudela, R., Litchman, E., Mulholland, M., Passow, U., Strzepek, R., Whittaker, K., Yu, E., Thomas, M., 2013. Marine Phytoplankton Temperature versus Growth Responses from Polar to Tropical Waters - Outcome of a Scientific Community-Wide Study. PLoS ONE 8 (5), e63091.
Passow, U., Carlson, C., 2012. The Biological Pump in a High CO2 World. Marine Ecology Progress Series 470, 249-271.
attribute NC_GLOBAL projects_0_end_date String 2012-08
attribute NC_GLOBAL projects_0_geolocation String Passow Lab, Marine Science Institute, University of California Santa Barbara
attribute NC_GLOBAL projects_0_name String Will Ocean Acidification Diminish Particle Aggregation and Mineral Scavenging, Thus Weakening the Biological Pump?
attribute NC_GLOBAL projects_0_project_nid String 2201
attribute NC_GLOBAL projects_0_project_website String http://www.msi.ucsb.edu/people/research-scientists/uta-passow (external link)
attribute NC_GLOBAL projects_0_start_date String 2009-09
attribute NC_GLOBAL publisher_name String Stephen R. Gegg
attribute NC_GLOBAL publisher_role String BCO-DMO Data Manager(s)
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 34.4126
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v29
attribute NC_GLOBAL subsetVariables String Lab_Id, latitude, longitude
attribute NC_GLOBAL summary String Series 4: Aggregation of Thalassiosira weissflogii as a function of pCO2,
temperature and bacteria: Acclimatisation Phase - Carbonate System

Related Reference:
[Aggregation and Sedimentation of Thalassiosira weissflogii (diatom) in a
Warmer and More Acidified Future
Ocean](\\http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0112379\\)
attribute NC_GLOBAL title String Aggregation of Thalassiosira weissflogii as a function of pCO2, temperature, and bacteria - Acclimatization Phase - Carbonate System from UCSB MSI Passow Laboratory from 2009 to 2010 (OA - Ocean Acidification and Aggregation project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -119.842
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.0-alpha
variable Lab_Id   String  
attribute Lab_Id description String Lab Id - Lab identifier where experiments were conducted
attribute Lab_Id ioos_category String Identifier
attribute Lab_Id long_name String Lab Id
attribute Lab_Id units String text
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 34.4126, 34.4126
attribute latitude axis String Y
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String Approximate Latitude Position of Lab; South is negative
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable longitude   double  
attribute longitude _CoordinateAxisType String Lon
attribute longitude _FillValue double NaN
attribute longitude actual_range double -119.842, -119.842
attribute longitude axis String X
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String Approximate Longitude Position of Lab; West is negative
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable Temp   byte  
attribute Temp _FillValue byte 127
attribute Temp actual_range byte 15, 20
attribute Temp description String Treatment - Temperature
attribute Temp ioos_category String Temperature
attribute Temp long_name String Temperature
attribute Temp units String degrees C
variable pCO2   String  
attribute pCO2 description String Treatment - pCO2 conditions
attribute pCO2 ioos_category String CO2
attribute pCO2 long_name String P CO2
attribute pCO2 units String text
variable sampling_date   int  
attribute sampling_date _FillValue int 2147483647
attribute sampling_date actual_range int 20110517, 20110530
attribute sampling_date description String Sampling times - Sampling date in�YYYYMMDD format
attribute sampling_date ioos_category String Time
attribute sampling_date long_name String Sampling Date
attribute sampling_date units String unitless
variable day_of_acclimatisation   byte  
attribute day_of_acclimatisation _FillValue byte 127
attribute day_of_acclimatisation actual_range byte 1, 14
attribute day_of_acclimatisation description String Sampling times - day_of_acclimatisation
attribute day_of_acclimatisation ioos_category String Time
attribute day_of_acclimatisation long_name String Day Of Acclimatisation
attribute day_of_acclimatisation units String integer
variable pH_at_25C   float  
attribute pH_at_25C _FillValue float NaN
attribute pH_at_25C actual_range float 7.546, 8.338
attribute pH_at_25C description String Carbonate system - pH at 25degC
attribute pH_at_25C ioos_category String Salinity
attribute pH_at_25C long_name String P H At 25 C
attribute pH_at_25C units String total scale
variable DIC   short  
attribute DIC _FillValue short 32767
attribute DIC actual_range short 1823, 2250
attribute DIC description String Carbonate system - DIC
attribute DIC ioos_category String Unknown
attribute DIC long_name String DIC
attribute DIC units String umol/kgSW
variable TA   short  
attribute TA _FillValue short 32767
attribute TA actual_range short 2163, 2398
attribute TA description String Carbonate system - TA
attribute TA ioos_category String Unknown
attribute TA long_name String TA
attribute TA units String umol/kgSW
variable Salinity   float  
attribute Salinity _FillValue float NaN
attribute Salinity actual_range float 33.3, 34.2
attribute Salinity colorBarMaximum double 37.0
attribute Salinity colorBarMinimum double 32.0
attribute Salinity description String Carbonate system - Salinity
attribute Salinity ioos_category String Salinity
attribute Salinity long_name String Sea Water Practical Salinity
attribute Salinity units String ppt
variable growth_rate   float  
attribute growth_rate _FillValue float NaN
attribute growth_rate actual_range float 0.49, 0.86
attribute growth_rate description String Carbonate system - growth rate
attribute growth_rate ioos_category String Unknown
attribute growth_rate long_name String Growth Rate
attribute growth_rate units String u per day

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.


 
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