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Dataset Title:  Experimental results of Plocamium cartilagineum growth and biomass as a
function of pCO2 and temperature (Seaweed OA Resilience project)
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Institution:  BCO-DMO   (Dataset ID: bcodmo_dataset_726452)
Information:  Summary ? | License ? | ISO 19115 | Metadata | Background (external link) | Files | Make a graph
 
Variable ?   Optional
Constraint #1 ?
Optional
Constraint #2 ?
   Minimum ?
 
   Maximum ?
 
 trial (unitless) ?          2    8
 pot (unitless) ?          1    9
 pCO2_target_range (unitless) ?          "high_increase"    "near_ambient"
 pCO2 (microatmospheres (uatm)) ?          344    1053
 temp (Temperature, degrees Celsius) ?          15    20
 date_start (unitless) ?          "2014-06-04"    "2015-01-30"
 date_end (unitless) ?          "2014-06-12"    "2015-02-23"
 area_t0 (square centimeters (cm^2)) ?          99.51    156.56
 area_end (square centimeters (cm^2)) ?          23.05    170.59
 days (days) ?          18    46
 adj_growth (square centimeters/square centimeters/day (cm^2/cm^2/day)) ?          -0.07982    0.01041
 growth_biom (milligrams/gram/day (mg/g/day)) ?          -9.06    20.9
 growth_dyn (milligrams/gram/day (mg/g/day)) ?          -7.92    23.53
 
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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  trial {
    Byte _FillValue 127;
    Byte actual_range 2, 8;
    String bcodmo_name "exp_id";
    String description "experimental trial consisting of 3 PCO2 levels with one always ~380 as control";
    String long_name "Trial";
    String units "unitless";
  }
  pot {
    Byte _FillValue 127;
    Byte actual_range 1, 9;
    String bcodmo_name "sample";
    String description "culture pot identifier";
    String long_name "Pot";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P02/current/ACYC/";
    String units "unitless";
  }
  pCO2_target_range {
    String bcodmo_name "pCO2";
    String description "Relative range for the target pCO2. See Supplemental Files for the table of culture conditions for each of the 8 trials.";
    String long_name "P CO2 Target Range";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PCO2C101/";
    String units "unitless";
  }
  pCO2 {
    Int16 _FillValue 32767;
    Int16 actual_range 344, 1053;
    String bcodmo_name "pCO2";
    String description "partial pressure of dissolved CO2";
    String long_name "P CO2";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PCO2C101/";
    String units "microatmospheres (uatm)";
  }
  temp {
    Byte _FillValue 127;
    Byte actual_range 15, 20;
    String bcodmo_name "temperature";
    String description "Temperature";
    String long_name "Temperature";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/TEMPP901/";
    String units "degrees Celsius";
  }
  date_start {
    String bcodmo_name "date_start";
    String description "start date for trial formatted as yyyy-mm-dd";
    String long_name "Date Start";
    String source_name "date_start";
    String time_precision "1970-01-01";
    String units "unitless";
  }
  date_end {
    String bcodmo_name "date_end";
    String description "end date for trial formatted as yyyy-mm-dd";
    String long_name "Date End";
    String time_precision "1970-01-01";
    String units "unitless";
  }
  area_t0 {
    Float32 _FillValue NaN;
    Float32 actual_range 99.51, 156.56;
    String bcodmo_name "surface_area";
    String description "frond surface area on day 0 (start)";
    String long_name "Area T0";
    String units "square centimeters (cm^2)";
  }
  area_end {
    Float32 _FillValue NaN;
    Float32 actual_range 23.05, 170.59;
    String bcodmo_name "surface_area";
    String description "frond surface area at expt. end";
    String long_name "Area End";
    String units "square centimeters (cm^2)";
  }
  days {
    Byte _FillValue 127;
    Byte actual_range 18, 46;
    String bcodmo_name "days";
    String description "Number of days for experimental trial";
    String long_name "Days";
    String units "days";
  }
  adj_growth {
    Float32 _FillValue NaN;
    Float32 actual_range -0.07982, 0.01041;
    String bcodmo_name "growth";
    String description "Area-specific growth rate";
    String long_name "Adj Growth";
    String units "square centimeters/square centimeters/day  (cm^2/cm^2/day)";
  }
  growth_biom {
    Float32 _FillValue NaN;
    Float32 actual_range -9.06, 20.9;
    String bcodmo_name "growth";
    String description "biomass-specific growth between t=0 and t=19 or 20 or 21 days";
    String long_name "Growth Biom";
    String units "milligrams/gram/day (mg/g/day)";
  }
  growth_dyn {
    Float32 _FillValue NaN;
    Float32 actual_range -7.92, 23.53;
    String bcodmo_name "growth";
    String description "dynamic average of weekly growth rates over the 3-4 week experiment";
    String long_name "Growth Dyn";
    String units "milligrams/gram/day (mg/g/day)";
  }
 }
  NC_GLOBAL {
    String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv";
    String acquisition_description 
"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).";
    String awards_0_award_nid "55177";
    String awards_0_award_number "OCE-1316198";
    String awards_0_data_url "http://www.nsf.gov/awardsearch/showAward?AWD_ID=1316198";
    String awards_0_funder_name "NSF Division of Ocean Sciences";
    String awards_0_funding_acronym "NSF OCE";
    String awards_0_funding_source_nid "355";
    String awards_0_program_manager "David L. Garrison";
    String awards_0_program_manager_nid "50534";
    String cdm_data_type "Other";
    String comment 
"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";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "info@bco-dmo.org";
    String creator_name "BCO-DMO";
    String creator_type "institution";
    String creator_url "https://www.bco-dmo.org/";
    String data_source "extract_data_as_tsv version 2.3  19 Dec 2019";
    String date_created "2018-02-08T20:27:11Z";
    String date_modified "2019-06-03T17:37:59Z";
    String defaultDataQuery "&time<now";
    String doi "10.1575/1912/bco-dmo.726452.1";
    String history 
"2021-10-21T21:35:32Z (local files)
2021-10-21T21:35:32Z https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_726452.html";
    String infoUrl "https://www.bco-dmo.org/dataset/726452";
    String institution "BCO-DMO";
    String instruments_0_acronym "camera";
    String instruments_0_dataset_instrument_description "To take images of fronds for area measurements.";
    String instruments_0_dataset_instrument_nid "726456";
    String instruments_0_description "All types of photographic equipment including stills, video, film and digital systems.";
    String instruments_0_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/311/";
    String instruments_0_instrument_name "Camera";
    String instruments_0_instrument_nid "520";
    String instruments_0_supplied_name "Lumenera Corp. Infinity 2 2.0 Megapixel Color CCD Camera, Navitar TV Zoom 7000 Macro lens";
    String instruments_1_acronym "MFC";
    String instruments_1_dataset_instrument_description "Used to mix gasses: Nitrogen, 1 L/min; Oxygen, 250 ml/min; CO2, 2 ml/min.";
    String instruments_1_dataset_instrument_nid "726458";
    String instruments_1_description "Mass Flow Controller (MFC) - A device used to measure and control the flow of fluids and gases";
    String instruments_1_instrument_name "Mass Flow Controller";
    String instruments_1_instrument_nid "712";
    String instruments_1_supplied_name "Qubit Systems Mass Flow Controllers (MFC)";
    String instruments_2_acronym "Scale";
    String instruments_2_dataset_instrument_description "To measure biomass of fronds";
    String instruments_2_dataset_instrument_nid "726455";
    String instruments_2_description "An instrument used to measure weight or mass.";
    String instruments_2_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/LAB13/";
    String instruments_2_instrument_name "Scale";
    String instruments_2_instrument_nid "714";
    String instruments_2_supplied_name "Mettler Toledo AG204 Delta Range Analytical Balance";
    String instruments_3_acronym "Aquarium chiller";
    String instruments_3_dataset_instrument_description "Used to control the temperature of the growth chambers.";
    String instruments_3_dataset_instrument_nid "726457";
    String instruments_3_description "Immersible or in-line liquid cooling device, usually with temperature control.";
    String instruments_3_instrument_name "Aquarium chiller";
    String instruments_3_instrument_nid "522982";
    String instruments_3_supplied_name "Aqua Logic Cyclone Chiller";
    String keywords "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";
    String license "https://www.bco-dmo.org/dataset/726452/license";
    String metadata_source "https://www.bco-dmo.org/api/dataset/726452";
    String param_mapping "{'726452': {}}";
    String parameter_source "https://www.bco-dmo.org/mapserver/dataset/726452/parameters";
    String people_0_affiliation "California State University Northridge";
    String people_0_affiliation_acronym "CSU-Northridge";
    String people_0_person_name "Dr Janet  E Kubler";
    String people_0_person_nid "51681";
    String people_0_role "Principal Investigator";
    String people_0_role_type "originator";
    String people_1_affiliation "California State University Northridge";
    String people_1_affiliation_acronym "CSU-Northridge";
    String people_1_person_name "Dr Steve Dudgeon";
    String people_1_person_nid "51682";
    String people_1_role "Co-Principal Investigator";
    String people_1_role_type "originator";
    String people_2_affiliation "Woods Hole Oceanographic Institution";
    String people_2_affiliation_acronym "WHOI BCO-DMO";
    String people_2_person_name "Nancy Copley";
    String people_2_person_nid "50396";
    String people_2_role "BCO-DMO Data Manager";
    String people_2_role_type "related";
    String project "Seaweed OA Resilience";
    String projects_0_acronym "Seaweed OA Resilience";
    String projects_0_description "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.";
    String projects_0_end_date "2016-05";
    String projects_0_geolocation "Temperate coastal waters of the USA (30 - 45 N latitude, -66 to -88 W and -117 to -125 W longitude)";
    String projects_0_name "Ocean Acidification: Scope for Resilience to Ocean Acidification in Macroalgae";
    String projects_0_project_nid "2275";
    String projects_0_start_date "2013-06";
    String publisher_name "Biological and Chemical Oceanographic Data Management Office (BCO-DMO)";
    String publisher_type "institution";
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "Experimental results of Plocamium cartilagineum growth and biomass as a function of pCO2 and temperature.";
    String title "Experimental results of Plocamium cartilagineum growth and biomass as a function of pCO2 and temperature (Seaweed OA Resilience project)";
    String version "1";
    String xml_source "osprey2erddap.update_xml() v1.3";
  }
}

 

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