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     data   graph     files  public Chlorophyll a per unit biomass in Ulva lactuca under ocean acidification (OA)
conditions (Seaweed OA Resilience project)
   ?     I   M   background (external link) RSS BCO-DMO bcodmo_dataset_732438

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
attribute NC_GLOBAL acquisition_description String Culture pots were placed in large thermally insulated coolers in a
temperature-controlled water bath at 15\u00b0 C under saturating illumination
of ~550 \u00b5moles photons/m^2/s on a 12:12 L:D cycle. pCO2 treatments were
supplied to closed culture pots by use of a gas mixing system combining
nitrogen, oxygen and carbon dioxide to specific CO2 partial pressures, 20.9%
oxygen and the balance being nitrogen.

Chlorophyll a was extracted from Ulva tissue following the procedure described
in Duncan and Harrison (1982). Chlorophyll a concentrations were measured
using a Shimadzu UV-2450 UV-visible spectrophotometer.
attribute NC_GLOBAL awards_0_award_nid String 55177
attribute NC_GLOBAL awards_0_award_number String OCE-1316198
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=1316198 (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 David L. Garrison
attribute NC_GLOBAL awards_0_program_manager_nid String 50534
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Chl_a - Ulva
Chlorophyll a per unit biomass in Ulva lactuca under ocean acidification conditions
PI's: J. Kubler, S. Dudgeon (CSU-Northbridge)
version: 2018-03-22
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 version 2.2d 13 Jun 2019
attribute NC_GLOBAL date_created String 2018-03-28T12:21:30Z
attribute NC_GLOBAL date_modified String 2019-06-03T18:19:55Z
attribute NC_GLOBAL defaultDataQuery String &time
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.732438.1
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/732438 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String UV Spectrophotometer-Shimadzu
attribute NC_GLOBAL instruments_0_dataset_instrument_description String Used to measure chlorophyll a�concentration.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 732449
attribute NC_GLOBAL instruments_0_description String The Shimadzu UV Spectrophotometer is manufactured by Shimadzu Scientific Instruments (ssi.shimadzu.com). Shimadzu manufacturers several models of spectrophotometer; refer to dataset for make/model information.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB20/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String UV Spectrophotometer-Shimadzu
attribute NC_GLOBAL instruments_0_instrument_nid String 595
attribute NC_GLOBAL instruments_0_supplied_name String Shimadzu UV-2450 UV-visible spectrophotometer
attribute NC_GLOBAL keywords String a635, a665, a668, average, bco, bco-dmo, biological, carbon, carbon dioxide, chemical, chemistry, chl, chl_a, chlorophyll, co2, color, concentration, concentration_of_chlorophyll_in_sea_water, data, dataset, dioxide, dmo, dmso, DMSO_A665, DMSO_ext, earth, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, erddap, ext, fresh, Fresh_Wt, label, management, meth, Meth_ext, methanol, Methanol_A635, Methanol_A668, ocean, ocean color, oceanography, oceans, office, pCO2_avg, pCO2_sd, preliminary, science, sea, seawater, statistics, total, Total_chl_mg, 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/732438 (external link)
attribute NC_GLOBAL param_mapping String {'732438': {}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/732438/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String California State University Northridge
attribute NC_GLOBAL people_0_affiliation_acronym String CSU-Northridge
attribute NC_GLOBAL people_0_person_name String Dr Janet E Kubler
attribute NC_GLOBAL people_0_person_nid String 51681
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 California State University Northridge
attribute NC_GLOBAL people_1_affiliation_acronym String CSU-Northridge
attribute NC_GLOBAL people_1_person_name String Dr Steve Dudgeon
attribute NC_GLOBAL people_1_person_nid String 51682
attribute NC_GLOBAL people_1_role String Co-Principal Investigator
attribute NC_GLOBAL people_1_role_type String originator
attribute NC_GLOBAL people_2_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_2_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_2_person_name String Nancy Copley
attribute NC_GLOBAL people_2_person_nid String 50396
attribute NC_GLOBAL people_2_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_2_role_type String related
attribute NC_GLOBAL project String Ocean Acidification: Scope for Resilience to Ocean Acidification in Macroalgae
attribute NC_GLOBAL projects_0_acronym String Seaweed OA Resilience
attribute NC_GLOBAL projects_0_description String Benthic macroalgae contribute to intensely productive near shore ecosystems and little is known about the potential effects of ocean acidification on non-calcifying macroalgae. K�bler and Dudgeon will test hypotheses about two macroalgae, Ulva spp. and Plocamium cartilagineum, which, for different reasons, are hypothesized to be more productive and undergo ecological expansions under predicted changes in ocean chemistry. They have designed laboratory culture-based experiments to quantify the scope for response to ocean acidification in Plocamium, which relies solely on diffusive uptake of CO2, and populations of Ulva spp., which have an inducible concentrating mechanism (CCM). The investigators will culture these algae in media equilibrated at 8 different pCO2 levels ranging from 380 to 940 ppm to address three key hypotheses. The first is that macroalgae (such as Plocamium cartilagineum) that are not able to acquire inorganic carbon in changed form will benefit, in terms of photosynthetic and growth rates, from ocean acidification. There is little existing data to support this common assumption. The second hypothesis is that enhanced growth of Ulva sp. under OA will result from the energetic savings from down regulating the CCM, rather than from enhanced photosynthesis per se. Their approach will detect existing genetic variation for adaptive plasticity. The third key hypothesis to be addressed in short-term culture experiments is that there will be a significant interaction between ocean acidification and nitrogen limited growth of Ulva spp., which are indicator species of eutrophication. K�bler and Dudgeon will be able to quantify the individual effects of ocean acidification and nitrogenous nutrient addition on Ulva spp. and also, the synergistic effects, which will inevitably apply in many highly productive, shallow coastal areas. The three hypotheses being addressed have been broadly identified as urgent needs in our growing understanding of the impacts of ocean acidification.
attribute NC_GLOBAL projects_0_end_date String 2016-05
attribute NC_GLOBAL projects_0_geolocation String Temperate coastal waters of the USA (30 - 45 N latitude, -66 to -88 W and -117 to -125 W longitude)
attribute NC_GLOBAL projects_0_name String Ocean Acidification: Scope for Resilience to Ocean Acidification in Macroalgae
attribute NC_GLOBAL projects_0_project_nid String 2275
attribute NC_GLOBAL projects_0_start_date String 2013-06
attribute NC_GLOBAL publisher_name String Nancy Copley
attribute NC_GLOBAL publisher_role String BCO-DMO Data Manager(s)
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v29
attribute NC_GLOBAL summary String This dataset reports the chlorophyll a concentration per unit biomass of Ulva lactuca grown in closed culture pots at varying pCO2 levels.
attribute NC_GLOBAL title String Chlorophyll a per unit biomass in Ulva lactuca under ocean acidification (OA) conditions (Seaweed OA Resilience project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.5-beta
variable Label   String  
attribute Label description String Trial number-pot number.frozen tissue replicate
attribute Label ioos_category String Unknown
attribute Label long_name String Label
attribute Label units String unitless
variable pCO2_avg   short  
attribute pCO2_avg _FillValue short 32767
attribute pCO2_avg actual_range short 248, 1001
attribute pCO2_avg description String Average pCO2 partial pressure in seawater tanks
attribute pCO2_avg ioos_category String CO2
attribute pCO2_avg long_name String P CO2 Avg
attribute pCO2_avg units String microatmospheres (�atm)
variable pCO2_sd   float  
attribute pCO2_sd _FillValue float NaN
attribute pCO2_sd actual_range float 36.22, 1827.8
attribute pCO2_sd colorBarMaximum double 50.0
attribute pCO2_sd colorBarMinimum double 0.0
attribute pCO2_sd description String Variability of pCO2 partial pressure - standard deviation
attribute pCO2_sd ioos_category String Statistics
attribute pCO2_sd long_name String P CO2 Sd
attribute pCO2_sd units String microatmospheres (�atm)
variable Fresh_Wt   String  
attribute Fresh_Wt description String Fresh weight of tissue sample prior to deep freeze
attribute Fresh_Wt ioos_category String Unknown
attribute Fresh_Wt long_name String Fresh Wt
attribute Fresh_Wt units String grams
variable DMSO_A665   String  
attribute DMSO_A665 description String Absorbance of light by ground Ulva tissue at 665nm in 1.25 ml of an 80% DMSO solution in water
attribute DMSO_A665 ioos_category String Unknown
attribute DMSO_A665 long_name String DMSO A665
attribute DMSO_A665 units String unitless
variable Methanol_A668   String  
attribute Methanol_A668 description String Absorbance of light by ground Ulva tissue at 668nm in 6 ml methanol
attribute Methanol_A668 ioos_category String Unknown
attribute Methanol_A668 long_name String Methanol A668
attribute Methanol_A668 units String unitless
variable Methanol_A635   String  
attribute Methanol_A635 description String Absorbance of light by ground Ulva tissue at 635nm in 6 ml methanol
attribute Methanol_A635 ioos_category String Unknown
attribute Methanol_A635 long_name String Methanol A635
attribute Methanol_A635 units String unitless
variable DMSO_ext   String  
attribute DMSO_ext description String Chlorophyll a extracted in DMSO
attribute DMSO_ext ioos_category String Unknown
attribute DMSO_ext long_name String DMSO Ext
attribute DMSO_ext units String milligram/liter (mg/L)
variable Meth_ext   String  
attribute Meth_ext description String Chlorophyll a in pooled extracts of 12 ml of methanol
attribute Meth_ext ioos_category String Unknown
attribute Meth_ext long_name String Meth Ext
attribute Meth_ext units String milligram/liter (mg/L)
variable Total_chl_mg   String  
attribute Total_chl_mg description String Total chlorophyll a extracted from ground tissue
attribute Total_chl_mg ioos_category String Unknown
attribute Total_chl_mg long_name String Total Chl Mg
attribute Total_chl_mg units String milligrams (mg)
variable chl_a   String  
attribute chl_a colorBarMaximum double 30.0
attribute chl_a colorBarMinimum double 0.03
attribute chl_a colorBarScale String Log
attribute chl_a description String Chlorophyll a concentration per unit biomass
attribute chl_a ioos_category String Ocean Color
attribute chl_a long_name String Concentration Of Chlorophyll In Sea Water
attribute chl_a units String milligrams/gram (mg/g)

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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