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     data   graph     files  public Experimental results of Plocamium cartilagineum growth and biomass as a function of pCO2 and
temperature (Seaweed OA Resilience project)
   ?     I   M   background (external link) RSS Subscribe BCO-DMO bcodmo_dataset_726452

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 Plocamium cartilagineum was collected from Catalina Island in June - Nov. 2014
and Jan. 2015.

Culture pots were placed in large thermally insulated coolers in a
temperature-controlled water bath at either 15 or 20\u00b0C under saturating
illumination of ~150 \u00b5moles photons/m^2/s. 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.

Areal growth: Frond pieces were placed under glass without overlap of branches
adjacent to a ruler for scale and imaged using an Infinity 2 camera with
attached macro lens mounted on a copy stand. Images and calibrated and surface
area of fronds measured using Image J. Measurements were taken at the start
and end of the trial. For all measures of growth (by surface area
[adj_growth], and biomass [growth_biom] and [growth_dyn]) the calculations are
specific growth rates, meaning LOG(measure@t2 / measure@t1)/(t2-t1).\u00a0For
surface area measures (adj_growth) and biomass (as growth_biom), t1 is the
initial measure at the start of the experiment and t2 is the final measure at
the end of the experiment. For biomass (asgrowth_dyn), t1 is the measure at
the start of each weeklong interval and t2 is the measure at the end of the
interval. Thus, there were typically 3 such intervals during a trial in which
growth was measured and the datum in the column growth_dyn represents the
average of those interval specific measures over the course of a trial.

Note: Since tagging individual fronds compromised frond performance, all
fronds in a culture pot were treated as sub-samples that were summed to give
the datum for the culture pot that was treated as the replicate.

Biomass: Frond pieces were gently blotted dry with paper toweling to remove
surface water and weighed at weekly intervals to estimate biomass specific
growth rates (growth_biom and growth_dyn). Note: since tagging individual
fronds compromised frond performance, all fronds in a culture pot were treated
as sub-samples that were summed to give the datum for the culture pot that was
treated as the replicate.

Note: Trial 1 was a pilot test of culture system and methodological procedures
so was not used for data collection in the testing of hypotheses.

See Supplemental Files for a table of culture conditions for each of the 8
trials (pdf).
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 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 Plocamium growth and biomass as a function of pCO2 and Temperature
with summary of pCO2 and temperature treatment combinations for each culture pot and experimental trial
S. Dudgeon, J. Kubler (CSU)
version: 2018-03-23
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 2.3 19 Dec 2019
attribute NC_GLOBAL date_created String 2018-02-08T20:27:11Z
attribute NC_GLOBAL date_modified String 2019-06-03T17:37:59Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.726452.1
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/726452 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String camera
attribute NC_GLOBAL instruments_0_dataset_instrument_description String To take images of fronds for area measurements.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 726456
attribute NC_GLOBAL instruments_0_description String All types of photographic equipment including stills, video, film and digital systems.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/311/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Camera
attribute NC_GLOBAL instruments_0_instrument_nid String 520
attribute NC_GLOBAL instruments_0_supplied_name String Lumenera Corp. Infinity 2 2.0 Megapixel Color CCD Camera, Navitar TV Zoom 7000 Macro lens
attribute NC_GLOBAL instruments_1_acronym String MFC
attribute NC_GLOBAL instruments_1_dataset_instrument_description String Used to mix gasses: Nitrogen, 1 L/min; Oxygen, 250 ml/min; CO2, 2 ml/min.
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 726458
attribute NC_GLOBAL instruments_1_description String Mass Flow Controller (MFC) - A device used to measure and control the flow of fluids and gases
attribute NC_GLOBAL instruments_1_instrument_name String Mass Flow Controller
attribute NC_GLOBAL instruments_1_instrument_nid String 712
attribute NC_GLOBAL instruments_1_supplied_name String Qubit Systems Mass Flow Controllers (MFC)
attribute NC_GLOBAL instruments_2_acronym String Scale
attribute NC_GLOBAL instruments_2_dataset_instrument_description String To measure biomass of fronds
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 726455
attribute NC_GLOBAL instruments_2_description String An instrument used to measure weight or mass.
attribute NC_GLOBAL instruments_2_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB13/ (external link)
attribute NC_GLOBAL instruments_2_instrument_name String Scale
attribute NC_GLOBAL instruments_2_instrument_nid String 714
attribute NC_GLOBAL instruments_2_supplied_name String Mettler Toledo AG204 Delta Range Analytical Balance
attribute NC_GLOBAL instruments_3_acronym String Aquarium chiller
attribute NC_GLOBAL instruments_3_dataset_instrument_description String Used to control the temperature of the growth chambers.
attribute NC_GLOBAL instruments_3_dataset_instrument_nid String 726457
attribute NC_GLOBAL instruments_3_description String Immersible or in-line liquid cooling device, usually with temperature control.
attribute NC_GLOBAL instruments_3_instrument_name String Aquarium chiller
attribute NC_GLOBAL instruments_3_instrument_nid String 522982
attribute NC_GLOBAL instruments_3_supplied_name String Aqua Logic Cyclone Chiller
attribute NC_GLOBAL keywords String adj, adj_growth, area, area_end, area_t0, bco, bco-dmo, biological, biom, carbon, carbon dioxide, chemical, co2, data, dataset, date, date_end, days, dioxide, dmo, dyn, end, erddap, growth, growth_biom, growth_dyn, management, oceanography, office, pCO2, pCO2_target_range, pot, preliminary, range, start, target, temperature, time, trial
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/726452/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/726452 (external link)
attribute NC_GLOBAL param_mapping String {'726452': {}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/726452/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 Seaweed OA Resilience
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. Kübler 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. Kübler 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 Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Experimental results of Plocamium cartilagineum growth and biomass as a function of pCO2 and temperature.
attribute NC_GLOBAL title String Experimental results of Plocamium cartilagineum growth and biomass as a function of pCO2 and temperature (Seaweed OA Resilience project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable trial   byte  
attribute trial _FillValue byte 127
attribute trial actual_range byte 2, 8
attribute trial bcodmo_name String exp_id
attribute trial description String experimental trial consisting of 3 PCO2 levels with one always ~380 as control
attribute trial long_name String Trial
attribute trial units String unitless
variable pot   byte  
attribute pot _FillValue byte 127
attribute pot actual_range byte 1, 9
attribute pot bcodmo_name String sample
attribute pot description String culture pot identifier
attribute pot long_name String Pot
attribute pot nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute pot units String unitless
variable pCO2_target_range   String  
attribute pCO2_target_range bcodmo_name String pCO2
attribute pCO2_target_range description String Relative range for the target pCO2. See Supplemental Files for the table of culture conditions for each of the 8 trials.
attribute pCO2_target_range long_name String P CO2 Target Range
attribute pCO2_target_range nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/PCO2C101/ (external link)
attribute pCO2_target_range units String unitless
variable pCO2   short  
attribute pCO2 _FillValue short 32767
attribute pCO2 actual_range short 344, 1053
attribute pCO2 bcodmo_name String pCO2
attribute pCO2 description String partial pressure of dissolved CO2
attribute pCO2 long_name String P CO2
attribute pCO2 nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/PCO2C101/ (external link)
attribute pCO2 units String microatmospheres (uatm)
variable temp   byte  
attribute temp _FillValue byte 127
attribute temp actual_range byte 15, 20
attribute temp bcodmo_name String temperature
attribute temp description String Temperature
attribute temp long_name String Temperature
attribute temp nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/TEMPP901/ (external link)
attribute temp units String degrees Celsius
variable date_start   String  
attribute date_start bcodmo_name String date_start
attribute date_start description String start date for trial formatted as yyyy-mm-dd
attribute date_start long_name String Date Start
attribute date_start source_name String date_start
attribute date_start time_precision String 1970-01-01
attribute date_start units String unitless
variable date_end   String  
attribute date_end bcodmo_name String date_end
attribute date_end description String end date for trial formatted as yyyy-mm-dd
attribute date_end long_name String Date End
attribute date_end time_precision String 1970-01-01
attribute date_end units String unitless
variable area_t0   float  
attribute area_t0 _FillValue float NaN
attribute area_t0 actual_range float 99.51, 156.56
attribute area_t0 bcodmo_name String surface_area
attribute area_t0 description String frond surface area on day 0 (start)
attribute area_t0 long_name String Area T0
attribute area_t0 units String square centimeters (cm^2)
variable area_end   float  
attribute area_end _FillValue float NaN
attribute area_end actual_range float 23.05, 170.59
attribute area_end bcodmo_name String surface_area
attribute area_end description String frond surface area at expt. end
attribute area_end long_name String Area End
attribute area_end units String square centimeters (cm^2)
variable days   byte  
attribute days _FillValue byte 127
attribute days actual_range byte 18, 46
attribute days bcodmo_name String days
attribute days description String Number of days for experimental trial
attribute days long_name String Days
attribute days units String days
variable adj_growth   float  
attribute adj_growth _FillValue float NaN
attribute adj_growth actual_range float -0.07982, 0.01041
attribute adj_growth bcodmo_name String growth
attribute adj_growth description String Area-specific growth rate
attribute adj_growth long_name String Adj Growth
attribute adj_growth units String square centimeters/square centimeters/day (cm^2/cm^2/day)
variable growth_biom   float  
attribute growth_biom _FillValue float NaN
attribute growth_biom actual_range float -9.06, 20.9
attribute growth_biom bcodmo_name String growth
attribute growth_biom description String biomass-specific growth between t=0 and t=19 or 20 or 21 days
attribute growth_biom long_name String Growth Biom
attribute growth_biom units String milligrams/gram/day (mg/g/day)
variable growth_dyn   float  
attribute growth_dyn _FillValue float NaN
attribute growth_dyn actual_range float -7.92, 23.53
attribute growth_dyn bcodmo_name String growth
attribute growth_dyn description String dynamic average of weekly growth rates over the 3-4 week experiment
attribute growth_dyn long_name String Growth Dyn
attribute growth_dyn units String milligrams/gram/day (mg/g/day)

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.


 
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