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Dataset Title:  Growth rates of Ulva exposed to different average and variability of
pCO2 (Seaweed OA Resilience project)
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Institution:  BCO-DMO   (Dataset ID: bcodmo_dataset_732600)
Information:  Summary ? | License ? | ISO 19115 | Metadata | Background (external link) | Files | Make a graph
 
Variable ?   Optional
Constraint #1 ?
Optional
Constraint #2 ?
   Minimum ?
 
   Maximum ?
 
 Label (unitless) ?          "T2-P01"    "T4-P10"
 pCO2_avg (microatmospheres (µatm)) ?          248    1001
 pCO2_sd (microatmospheres (µatm)) ?          36.22    1827.8
 GP1i (grams) ?          0.05    0.13
 GP1f (grams) ?          0.12    1.09
 GP2i (grams) ?          0.12    1.09
 GP2f (grams) ?          0.19    9.14
 GP3i (grams) ?          0.19    2.14
 GP3f (grams) ?          0.33    10.07
 RGR_GP1 (%/day) ?          6.440539014    36.56190842
 RGR_GP2 (%/day) ?          7.03256994    42.70059048
 RGR_GP3 (%/day) ?          -6.980403475    34.61145124
 RGR_GP1to3_Net (%/day) ?          5.239759631    27.5381111
 added_mass (grams) ?          0.0    8.57
 RGR_GP1to3_Abs (grams) ?          10.68895258    27.65505603
 Total_mass (grams) ?          0.57    10.3
 
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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  Label {
    String bcodmo_name "sample";
    String description "Trial and culture pot number";
    String long_name "Label";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P02/current/ACYC/";
    String units "unitless";
  }
  pCO2_avg {
    Int16 _FillValue 32767;
    Int16 actual_range 248, 1001;
    String bcodmo_name "pCO2";
    String description "Average pCO2 partial pressure in seawater tanks";
    String long_name "P CO2 Avg";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PCO2C101/";
    String units "microatmospheres (µatm)";
  }
  pCO2_sd {
    Float32 _FillValue NaN;
    Float32 actual_range 36.22, 1827.8;
    String bcodmo_name "pCO2";
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String description "Variability of pCO2 partial pressure - standard deviation";
    String long_name "P CO2 Sd";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PCO2C101/";
    String units "microatmospheres (µatm)";
  }
  GP1i {
    Float32 _FillValue NaN;
    Float32 actual_range 0.05, 0.13;
    String bcodmo_name "weight";
    String description "Pot biomass at the beginning of the first growth interval";
    String long_name "GP1i";
    String units "grams";
  }
  GP1f {
    Float32 _FillValue NaN;
    Float32 actual_range 0.12, 1.09;
    String bcodmo_name "weight";
    String description "Pot biomass at the end of the first growth interval";
    String long_name "GP1F";
    String units "grams";
  }
  GP2i {
    Float32 _FillValue NaN;
    Float32 actual_range 0.12, 1.09;
    String bcodmo_name "weight";
    String description "Pot biomass at the beginning of the second growth interval";
    String long_name "GP2i";
    String units "grams";
  }
  GP2f {
    Float32 _FillValue NaN;
    Float32 actual_range 0.19, 9.14;
    String bcodmo_name "weight";
    String description "Pot biomass at the end of the second growth interval";
    String long_name "GP2F";
    String units "grams";
  }
  GP3i {
    Float32 _FillValue NaN;
    Float32 actual_range 0.19, 2.14;
    String bcodmo_name "weight";
    String description "Pot biomass at the beginning of the third growth interval";
    String long_name "GP3i";
    String units "grams";
  }
  GP3f {
    Float32 _FillValue NaN;
    Float32 actual_range 0.33, 10.07;
    String bcodmo_name "weight";
    String description "Pot biomass at the end of the third growth interval";
    String long_name "GP3F";
    String units "grams";
  }
  RGR_GP1 {
    Float64 _FillValue NaN;
    Float64 actual_range 6.440539014, 36.56190842;
    String bcodmo_name "growth";
    String description "Calculated relative growth rate for the 1st growth interval";
    String long_name "RGR GP1";
    String units "%/day";
  }
  RGR_GP2 {
    Float64 _FillValue NaN;
    Float64 actual_range 7.03256994, 42.70059048;
    String bcodmo_name "growth";
    String description "Calculated relative growth rate for the 2nd growth interval";
    String long_name "RGR GP2";
    String units "%/day";
  }
  RGR_GP3 {
    Float64 _FillValue NaN;
    Float64 actual_range -6.980403475, 34.61145124;
    String bcodmo_name "growth";
    String description "Calculated relative growth rate for the 3rd growth interval";
    String long_name "RGR GP3";
    String units "%/day";
  }
  RGR_GP1to3_Net {
    Float64 _FillValue NaN;
    Float64 actual_range 5.239759631, 27.5381111;
    String bcodmo_name "growth";
    String description "Calculated net growth integrated across experiment duration";
    String long_name "RGR GP1to3 Net";
    String units "%/day";
  }
  added_mass {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 8.57;
    String bcodmo_name "weight";
    String description "Summed biomass of small fragments from thalli in each growth interval";
    String long_name "Added Mass";
    String units "grams";
  }
  RGR_GP1to3_Abs {
    Float64 _FillValue NaN;
    Float64 actual_range 10.68895258, 27.65505603;
    String bcodmo_name "weight";
    String description "Calculated absolute growth integrated across experiment duration";
    String long_name "RGR GP1to3 Abs";
    String units "grams";
  }
  Total_mass {
    Float32 _FillValue NaN;
    Float32 actual_range 0.57, 10.3;
    String bcodmo_name "weight";
    String description "Sum of GP3f and added_mass";
    String long_name "Total Mass";
    String units "grams";
  }
 }
  NC_GLOBAL {
    String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv";
    String acquisition_description 
"Growth rate was measured in batch culture by pooling all plant thalli and
summing them to attain the datum for the culture pot. Hence, the culture pot
is the unit of replication. Growth rate was measured by recording the fresh
weight of living material approximately every 6 days. Plant tissue was lightly
stacked and gently pressed between layers of Kimwipes. This method reduced
handling time and removed superficial water prior to weighing. The stack was
then weighed together to attain the fresh weight for the pot. Relative growth
rate was then calculated following L\\u00fcning (1990):\\u00a0 RGR(% . day-1 =
(100*Ln(W2/W1))/(t2-t1), where W1, W2, t1, t2 correspond to fresh weights at
times 1 (t1) and 2 (t2), respectively. The weekly relative growth rates track
the dynamics of growth and its variation during the experiment. In addition to
growth rates estimated approximately weekly, estimates of overall net and
absolute growth rates integrated across the 3-week experiment were also made
using the initial and final starting masses. The difference between the
overall net and absolute growth rate estimates is that the latter estimate
includes small tissue fragments derived from whole thalli that occasionally
appeared at the end of a weekly growth interval, but were thought to not be
healthy viable fragments that would generate new growth in the subsequent
interval so were discarded at the beginning of the next growth interval.
 
Note: Trial 1 was a pilot test of culture system and methodological procedures
so was not used for data collection";
    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 
"Ulva_Growth_pCO2_var - Ulva 
   Growth rates of Ulva exposed to different average and variability of pCO2 
   PI's: J. Kubler, S. Dudgeon (CSU-Northridge) 
   version: 2019-06-03";
    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 "2018-03-28T20:16:28Z";
    String date_modified "2019-06-06T19:31:33Z";
    String defaultDataQuery "&time<now";
    String doi "10.1575/1912/bco-dmo.732600.1";
    String history 
"2020-08-06T00:40:12Z (local files)
2020-08-06T00:40:12Z https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_732600.html";
    String infoUrl "https://www.bco-dmo.org/dataset/732600";
    String institution "BCO-DMO";
    String instruments_0_acronym "Scale";
    String instruments_0_dataset_instrument_nid "732608";
    String instruments_0_description "An instrument used to measure weight or mass.";
    String instruments_0_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/LAB13/";
    String instruments_0_instrument_name "Scale";
    String instruments_0_instrument_nid "714";
    String instruments_0_supplied_name "Mettler Toledo AG204 Delta Range Analytical Balance";
    String keywords "abs, added, added_mass, average, bco, bco-dmo, biological, carbon, carbon dioxide, chemical, co2, data, dataset, dioxide, dmo, erddap, gp1, gp1f, gp1i, gp1to3, gp2, gp2f, gp2i, gp3, gp3f, gp3i, label, management, mass, net, oceanography, office, pCO2_avg, pCO2_sd, preliminary, rgr, RGR_GP1, RGR_GP1to3_Abs, RGR_GP1to3_Net, RGR_GP2, RGR_GP3, total, Total_mass";
    String license "https://www.bco-dmo.org/dataset/732600/license";
    String metadata_source "https://www.bco-dmo.org/api/dataset/732600";
    String param_mapping "{'732600': {}}";
    String parameter_source "https://www.bco-dmo.org/mapserver/dataset/732600/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 "This dataset includes growth rates of Ulva measured at three weekly intervals as well as integrated over the experimental trial grown in culture under various pCO2 levels from May through July 2015.";
    String title "Growth rates of Ulva exposed to different average and variability of pCO2 (Seaweed OA Resilience project)";
    String version "2";
    String xml_source "osprey2erddap.update_xml() v1.3";
  }
}

 

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