Metadata: 
  File identifier: 
      R4.x260.000-0026-metadata.xml
  Language: 
      eng; USA
  Character set: 
    Character set code: 
      utf8
  Hierarchy level: 
    Scope code: 
      dataset
  Metadata author: 
    Responsible party: 
      Individual name: 
          Robert (Bob) Cowen
      Organisation name: 
          Oregon State University / Hatfield Marine Science Center
      Position name: 
          Director
      Contact info: 
        Contact: 
          Phone: 
            Telephone: 
              Voice: 
                  5418670211
              Facsimile: 
          Address: 
            Address: 
              Delivery point: 
                  2030 SE Marine Science Dr
              City: 
                  Newport
              Administrative area: 
                  Oregon
              Postal code: 
                  97365
              Country: 
                  USA
              Electronic mail address: 
                  robert.cowen@oregonstate.edu
      Role: 
        Role code: 
          pointOfContact
  Date stamp: 
      2021-05-04T20:04:57+00:00
  Metadata standard name: 
      ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
  Metadata standard version: 
      ISO 19115-2:2009(E)
  Dataset URI: 
      https://data.gulfresearchinitiative.org/metadata/R4.x260.000:0026
Return To Index
  Identification info: 
    Data identification: 
      Citation: 
        Citation: 
          Title: 
              Mesozooplankton Size-Fractionated Dry Weight, cruise PTS01, Fall 2015
          Alternate title: 
              ISIIS Raw Physical Data
          Date: 
            Date: 
              Date: 
                  2017-07-12
              Date type: 
                Date type code: 
                  publication
          Identifier: 
            Identifier: 
              Code: 
                Anchor: xlink: https://dx.doi.org/10.7266/N798853D title: DOI
                  doi:10.7266/N798853D
      Abstract: 
          Mesozooplankton samples were taken during the fall of 2015 between October 27 and November 5 aboard R/V Point 
          Sur using a mininess (BIONESS) tow system. Samples were taken from three nets, corresponding to three depth 
          intervals (e.g. bottom, midwater, surface). Nets had 202 micrometer mesh size, but in some cases samples 
          were taken from nets with 0.333 micrometer mesh. Samples were transferred into a bucket immediately after 
          retrieval and carbonated water was added to the sample to stop or avoid further 'net feeding' or 
          regurgitation from individual zooplankton. Typically, each net sample was split in two aliquots using a 
          Folsom Splitter aboard the ship. The 1/2 aliquot separated from the original sample was then split further 
          in two subsamples: one was used to measure mesozooplankton dry weight and the other was processed for gut 
          fluorescence (data reported in GRIIDC UDI: R4.x260.000:0034). When samples were too thick, the initial 
          sample was split into smaller aliquots (clearly indicated in the dataset). The corresponding aliquot was 
          then size fractionated into five classes using sieves with meshes measuring: 0.212, 0.5, 1, 2, and 4.75 mm. 
          Filtered seawater was used during sample split and size fractionation. Next, each size fraction was filtered 
          onto pre-weighted nitex circles (2.5 mm diameter) with a 0.202 mesh size. Nitex circles were individually 
          put in labeled plastic petri dishes and stored stacked inside sealed plastic bags to avoid moisture from 
          getting in touch with the nitex before using them. After fractionation, each sample was poured onto a nitex 
          circle using a filtering system aboard the ship, rinsed with DI water, transferred to its pre-labeled petri 
          dish and frozen immediately after filtering. At the lab, the samples were dried up in an oven at 60 degrees 
          Celsius over a period of 48 hours and weighted immediately after taking each sample out of the oven. The 
          difference between the weight of the filter minus the weight after drying the sample constituted the 
          mesozooplankton dry weight. These data will be used in combination with other mesozooplankton net data to 
          study zooplankton processes in the river-dominated northern Gulf of Mexico.
      Purpose: 
          The dataset was developed to provide mesozooplankton size-fractionated information that will be used, among 
          others, to normalize mesozooplankton grazing rates measured through the gut fluorescence.
      Status: 
        Progress code: 
          completed
      Point of contact: 
        Responsible party: 
          Individual name: 
              Christian Briseno-Avena
          Organisation name: 
              Oregon State University / Hatfield Marine Science Center
          Position name: 
              Postdoctoral Researcher
          Contact info: 
            Contact: 
              Phone: 
                Telephone: 
                  Voice: 
                      5418670314
                  Facsimile: 
              Address: 
                Address: 
                  Delivery point: 
                      2030 SE Marine Science Dr
                  City: 
                      Newport
                  Administrative area: 
                      Oregon
                  Postal code: 
                      97365
                  Country: 
                      USA
                  Electronic mail address: 
                      brisenoc@oregonstate.edu
          Role: 
            Role code: 
              pointOfContact
      Point of contact: 
        Responsible party: 
          Individual name: 
              Robert (Bob) Cowen
          Organisation name: 
              Oregon State University / Hatfield Marine Science Center
          Position name: 
              Director
          Contact info: 
            Contact: 
              Phone: 
                Telephone: 
                  Voice: 
                      5418670211
                  Facsimile: 
              Address: 
                Address: 
                  Delivery point: 
                      2030 SE Marine Science Dr
                  City: 
                      Newport
                  Administrative area: 
                      Oregon
                  Postal code: 
                      97365
                  Country: 
                      USA
                  Electronic mail address: 
                      robert.cowen@oregonstate.edu
          Role: 
            Role code: 
              pointOfContact
      Descriptive keywords: 
        Keywords: 
          Keyword: 
              Mesozooplankton
          Keyword: 
              Dry Weight
          Keyword: 
              Biomass
          Keyword: 
              Size Fractionated
          Keyword: 
              Mississippi Bight
          Keyword: 
              Continental Shelf
          Keyword: 
              Mobile River Delta
          Type: 
            Keyword type code: 
              theme
      Descriptive keywords: 
        Keywords: 
          Keyword: 
              Gulf of Mexico
          Type: 
            Keyword type code: 
              place
      Resource constraints:  title: Cite As
        Constraints: 
          Use limitation: 
              Briseño-Avena, Christian, Alison L. Deary, Robert K. Cowen, Frank J. Hernandez, and Jeffrey W. Krause. 
              2017. Mesozooplankton Size-Fractionated Dry Weight, cruise PTS01, Fall 2015. Distributed by: Gulf of 
              Mexico Research Initiative Information and Data Cooperative (GRIIDC), Harte Research Institute, Texas 
              A&M University–Corpus Christi. doi:10.7266/N798853D
      Resource constraints:  title: CC0 License
        Legal constraints: 
          Use constraints: 
            Restriction code: 
              licenceUnrestricted
          Other constraints: 
              This information is released under the Creative Commons license - No Rights Reserved - CC0 1.0 Universal 
              (https://creativecommons.org/publicdomain/zero/1.0/). The person who associated a work with this deed 
              has dedicated the work to the public domain by waiving all of his or her rights to the work worldwide 
              under copyright law, including all related and neighboring rights, to the extent allowed by law. You can 
              copy, modify, distribute and perform the work, even for commercial purposes, all without asking 
              permission.
      Resource constraints:  title: Liability and Warranty
        Legal constraints: 
          Other constraints: 
              All materials on this website are made available to GRIIDC and in turn to you "as-is." Content may only be 
              submitted by an individual who represents and warrants that s/he has sufficient rights to be able to 
              make the content available under a CC0 waiver. There is no warranty (expressed or implied) to these 
              materials, their title, accuracy, non-infringement of third party rights, or fitness for any particular 
              purpose, including the performance or results you may obtain from their use. Use these materials at your 
              own risk. Under no circumstances shall GRIIDC be liable for any direct, incidental, special, 
              consequential, indirect, or punitive damages that result from the use or the inability to use either 
              this website or the materials available via this website. If you are dissatisfied with any website 
              feature, content, or terms of use, your sole and exclusive remedy is to discontinue use.
      Language: 
          eng; USA
      Topic category: 
        Topic category code: 
          biota
      Topic category: 
        Topic category code: 
          oceans
      Extent: 
        Extent: 
          Geographic element: 
            Geographic bounding box: 
              West bound longitude: 
                  -88.9712
              East bound longitude: 
                  -87.5238
              South bound latitude: 
                  29.2581
              North bound latitude: 
                  30.1926
          Geographic element: 
            BoundingPolygon: 
              Polygon: 
                gml:MultiPoint: 
                  gml:pointMember: 
                    Point: 
                      gml:pos: 
                        30.1287 -88.1237
                  gml:pointMember: 
                    Point: 
                      gml:pos: 
                        30.1276 -88.1247
                  gml:pointMember: 
                    Point: 
                      gml:pos: 
                        29.5686 -88.1348
                  gml:pointMember: 
                    Point: 
                      gml:pos: 
                        30.1926 -87.5295
                  gml:pointMember: 
                    Point: 
                      gml:pos: 
                        29.664 -87.5238
                  gml:pointMember: 
                    Point: 
                      gml:pos: 
                        30.1283 -88.1248
                  gml:pointMember: 
                    Point: 
                      gml:pos: 
                        29.5988 -88.1463
                  gml:pointMember: 
                    Point: 
                      gml:pos: 
                        30.0915 -88.6133
                  gml:pointMember: 
                    Point: 
                      gml:pos: 
                        29.5905 -88.597
                  gml:pointMember: 
                    Point: 
                      gml:pos: 
                        29.2581 -88.803
                  gml:pointMember: 
                    Point: 
                      gml:pos: 
                        29.344 -88.6425
                  gml:pointMember: 
                    Point: 
                      gml:pos: 
                        29.3244 -88.9712
                  gml:pointMember: 
                    Point: 
                      gml:pos: 
                        29.2832 -88.706
          Temporal element: 
            Temporal extent: 
              Extent: 
                Time period: 
                  Description: 
                    ground condition
                  Begin date: 
                    2015-10-29
                  End date: 
                    2015-11-05
      Supplemental Information: 
          CRUISE_ID = research cruise unique identifier. YEAR = Year sample was collected. Month = Month sample was 
          collected. Day = Day sample was collected. Time_UTC_HH = hour sample was collected, in UTC. Time_UTC_MM = 
          minutes when sample was collected, in UTC. Latitude = Latitude (decimal). Longitude = Longitude (decimal). 
          Negative sign indicate latitude west. Sampling_Type = Name assigned to the transect or location in which the 
          station took place, usually indicating the type of study. Tow_ID = Unique Net Tow indentifier. MN indicates 
          it was mininess net. Net_ID = mininess number from which the sample was taken. Petri_Dish_Number = label on 
          the petri dish for each pre-weighted nitex circle. Mesh_Size_um = mesh size of the net used during tow. 
          Gear_Type = The gear used for the plankton tow. Size_Fraction_mm = size of the sieve mesh, the values 
          correspond to, in millimeters. Pre_Bake_Weight_g = weight of the nitex circle alone prior to utilization 
          (i.e. blank weight). Post_Bake_Weight_g = weight of the nitex circle and mesozooplankton sample combined. 
          Balance_Offset_g = two different balances were used in some cases. To test the difference in readings from 
          both balances, ten pre-weighted (empty) circles were measured again in the second balance. We found a 
          difference of 0.001 g difference in the reported weights between balances. Post_Bake_Offset_g = The same 
          empty nitex circles were measured before and after baking. We found there was a weight loss by the nitex 
          circle alone of 0.002 g. Adjusted_Dry_Weight_g = This is the weight of the mesozooplankton sample (post-bake 
          minus pre-bake weights, taking offsets into consideration). Net_Split = Initial Sample split from net 
          sample. Final_Aliquot = fraction of the original sample used for this experiment. Begin_Depth_m = depth in 
          meters where the net was opened and started sampling. End_Depth_m = depth in meters where the net was closed 
          and stopped sampling. Depth_Range_m = depth interval sampled by the net between opening and closing 
          interval. Swept_Volume_m3 = water volume (meters cubed) filtered (i.e. sampled) by the net. 
          Dry_Weight_mg_PER_m3 = volumetric mesozooplankton dry weight (milligrams of mesozooplankton dry mass per 
          meter cube). Aerial_Dry_Weight_mg_PER_m2 = aerial mesozooplankton dry weight (milligrams of mesozooplankton 
          dry mass per meter square). Carbon_Mass_ugC_PER_L = volumetric Mesozooplankton Dry Weight converted into 
          volumetric Mesozooplankton Carbon Mass (micrograms of Carbon per liter). Notes = Notes pertaining to 
          collection or laboratory processing.|An attempt was made to "ground truth" CONCORDE mesozooplankton dry 
          weight measurements by comparing them to existing data from the Northern Gulf of Mexico. Since no dry weight 
          measurements were found in publicly available datasets, dry weight data was converted to Carbon Mass 
          (micrograms of Carbon per L) by following Moriarty and O-Brien (2013), and using the equations from Wiebe et 
          al. (1975), and Wiebe (1988). Carbon Mass was then directly compared other measurements (model estimates) 
          available for the region, which includes data from all seasons. For the direct comparison, data from all 
          size classes coming from each sample were pooled together since no size-fractionated Carbon Mass was 
          found.||||These data can be used in conjunction with mesozooplankton gut fluorescence data to get grazing 
          rates estimates.
Return To Index
  Distribution info: 
    Distribution: 
      Distributor: 
        Distributor: 
          Distributor contact: 
            Responsible party: 
              Organisation name: 
                  Gulf of Mexico Research Initiative Information and Data Cooperative (GRIIDC)
              Contact info: 
                Contact: 
                  Phone: 
                    Telephone: 
                      Voice: 
                          3618253604
                  Address: 
                    Address: 
                      Delivery point: 
                          6300 Ocean Drive
                      City: 
                          Corpus Christi
                      Administrative area: 
                          TX
                      Postal code: 
                          78412
                      Country: 
                          USA
                      Electronic mail address: 
                          griidc@gomri.org
                  Online Resource: 
                    Online Resource: 
                      Linkage: 
                        URL: 
                          https://data.gulfresearchinitiative.org
              Role: 
                Role code: 
                  distributor
          Distributor format: 
            Format: 
              Name: 
                  csv
              Version: 
                inapplicable
              File decompression technique: 
          Distributor transfer options: 
            Digital transfer options: 
              Transfer size: 
                  0.0244
              Online: 
                Online Resource: 
                  Linkage: 
                    URL: 
                      https://data.gulfresearchinitiative.org/data/R4.x260.000:0026
                  Protocol: 
                      https
                  Name: 
                      Data Landing Page
                  Description: 
                      GRIIDC dataset landing page
                  Function: 
                    Online function code: 
                      information
Return To Index
  Metadata maintenance: 
    Maintenance information: 
      Maintenance and update frequency: 
        unknown
      Maintenance note: 
          This ISO metadata record was automatically generated from information provided to GRIIDC for dataset: 
          R4.x260.000:0026 on 2021-07-28T23:43:02-05:00
Return To Index