http://lod.bco-dmo.org/id/dataset/1001364
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2026-06-18
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Lab measurements of the maximum lengths of different phytoplankton chains collected by phytonet tows from BIOSWOT-Med study in the Northwest Mediterranean Sea during May 2023
2026-06-18
publication
2026-06-18
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2026-06-18
publication
https://doi.org/10.26008/1912/bco-dmo.1001364.1
Mark D. Ohman
University of California-San Diego Scripps
principalInvestigator
Karine Leblanc
Aix-Marseille University
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Leblanc, K., Ohman, M. D. (2026) Lab measurements of the maximum lengths of different phytoplankton chains collected by phytonet tows from BIOSWOT-Med study in the Northwest Mediterranean Sea during May 2023. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2026-06-18 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.1001364.1 [access date]
Lab Measurements of Large Phytoplankton Chain Lengths from BIOSWOT-Med Dataset Description: Methods and Sampling: <p>During BioSWOT-Med, vertical phytonet hauls were performed from the R/V L’Atalante at three locations near water parcels sampled by <em>Zooglider</em>, two south of Menorca (Stas. M, M2) and one in the eddy (Sta. B3, Fig. 1a, Suppl. Table S1). Each haul was from 0-150 meters (m) with a 20-micrometer (µm) mesh net. Net collector contents were diluted to 1 liter (L) with filtered seawater. Two samples (60 milliliters (mL)) were fixed with acidified Lugols solution and buffered formaldehyde for light microscopy observations. One mL of the fresh net material was filtered onboard without fixative at low vacuum onto a 25-millimeter (mm) polycarbonate membrane and rinsed with MilliQ water, dried for 3 hours at 50 degrees Celsius (°C), then kept at room temperature for subsequent SEM analyses. Phytoplankton diversity was assessed by cell counts in light microscopy (Nikon TE200) while SEM samples were gold coated and analyzed on a Phenom ProX benchtop SEM. From the samples, diatom identification and measurements were made of the longest chains visible for each genus or species that was relatively abundant.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2243190 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2243190
Funding provided by French National Research Agency (ANR) Award Number: ANR-23-CE01-0027
onGoing
Mark D. Ohman
University of California-San Diego Scripps
619-534-2754
Scripps Institution of Oceanography 0218 University of California, San Diego 9500 Gilman Drive
La Jolla
CA
92093-0218
USA
mohman@ucsd.edu
pointOfContact
Karine Leblanc
Aix-Marseille University
karine.leblanc@mio.osupytheas.fr
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Station
ISO_DateTime_UTC
Latitude
Longitude
Taxon
Maximum_length_mm
Comments
Corresponding_Zoocam_Category
Nikon TE200
Phytoplankton Net
Phenom ProX benchtop SEM
Zooglider
theme
None, User defined
station
ISO_DateTime_UTC
latitude
longitude
taxon
length
activity and comments
sample description
featureType
BCO-DMO Standard Parameters
Microscope - Optical
Phytoplankton Net
Scanning Electron Microscope
Zooglider
instrument
BCO-DMO Standard Instruments
BioSWOT-Med
service
Deployment Activity
Northwestern Mediterranean Sea
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Zooglider assessment of zooplankton frontal gradients across the BIOSWOT-Med region
https://osprey.bco-dmo.org/project/920991
Zooglider assessment of zooplankton frontal gradients across the BIOSWOT-Med region
<p><em><strong>NSF Award Abstract:</strong></em><br />
Ocean fronts are regions of sharp horizontal discontinuities that can alter phytoplankton growth rates and community composition, zooplankton distributions and grazing activity, and predator foraging success. This study is using Zooglider, an autonomous ocean sampler equipped with a range of sensors and capitalizing on a unique opportunity to investigate frontal gradients and plankton communities in the western Mediterranean Sea. It is timed to coincide with a rapid crossover phase of a new NASA satellite mission. The combination of satellite and field-collected data will provide high resolution of the bio-physical consequences of oceanic frontal processes. The project incorporates training for graduate and undergraduate students as well as public outreach. Results are broadly communicated by partnering with a major public aquarium that serves 450,000 visitors per year, including by exhibiting novel porcelain ‘Zooware’ meant to convey the sensory experience of exploring the ocean’s planktonic fauna.</p>
<p>This project focuses on advancing understanding of frontal processes in the western Mediterranean Sea, at a ‘crossover’ site where NASA’s new Surface Water Ocean Topography (SWOT) satellite is making high-frequency sea surface height measurements using a high-resolution sensor. Measurements from the SWOT satellite are resolving small changes in sea-surface height, making it possible to follow the development and temporal progression of ocean frontal systems. The investigator is assessing the consequences of these frontal systems by testing the hypotheses that 1) zooplankton, marine snow particles, and predators are altered in these ocean frontal regions with a size-dependent or trait-dependent response; 2) particle-grazing zooplankton are more closely associated with layers of marine snow than with layers of living phytoplankton; 3) vertical thin layers of zooplankton are more likely to form in frontal than non-frontal regions; and 4) higher predators such as zooplanktivorous fish and marine mammals are more detectable in frontal regions The project makes use of an autonomous ocean instrument, the Zooglider. It includes a shadowgraph imaging Zoocam for resolving zooplankton and marine snow; a dual frequency Zonar to resolve mesozooplankton and larger sources of acoustic backscatter; and a sensitive hydrophone for recording ambient sounds, especially from marine mammals and fishes. These autonomous measurements are coordinated with complementary measurements from a ship-based sampling program, other autonomous vehicles, and satellite remote sensing.</p>
BIOSWOT-Med
largerWorkCitation
project
eng; USA
oceans
Northwestern Mediterranean Sea
3.958
5.149
39.494
40.782
2023-05-02
2023-05-12
NW Mediterranean Sea
0
BCO-DMO catalogue of parameters from Lab measurements of the maximum lengths of different phytoplankton chains collected by phytonet tows from BIOSWOT-Med study in the Northwest Mediterranean Sea during May 2023
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/1001387.rdf
Name: Station
Units: unitless
Description: <p>Oceanographic station where phytonet sample was taken</p>
http://lod.bco-dmo.org/id/dataset-parameter/1001388.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>Start date/time for phytonet sample (UTC)</p>
http://lod.bco-dmo.org/id/dataset-parameter/1001390.rdf
Name: Latitude
Units: degrees
Description: <p>North latitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/1001392.rdf
Name: Longitude
Units: degrees
Description: <p>East longitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/1001394.rdf
Name: Taxon
Units: unitless
Description: <p>Phytoplankton chain taxonomic category</p>
http://lod.bco-dmo.org/id/dataset-parameter/1001395.rdf
Name: Maximum_length_mm
Units: millimeters (mm)
Description: <p>Maximum length of chains of this taxonomic designation measured in the laboratory from this station.<br />
* = In some cases, where only individual cells or very short chains were found, an assumption of a maximum of 20 cells per chain was made for maximal length estimates, based on individual cell dimensions.</p>
http://lod.bco-dmo.org/id/dataset-parameter/1001396.rdf
Name: Comments
Units: unitless
Description: <p>Explanation when maximum chain length estimated rather than measured. In some cases, where only individual cells or very short chains were found, an assumption of a maximum of 20 cells per chain was made for maximal length estimates, based on individual cell dimensions.</p>
http://lod.bco-dmo.org/id/dataset-parameter/1001397.rdf
Name: Corresponding_Zoocam_Category
Units: unitless
Description: <p>Assignment of each phytoplankton type measured in the laboratory to 1 of 5 phytoplankton categories recognized from in situ imaging by Zoocam on Zooglider</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
https://osprey.bco-dmo.org/dataset/1001364/data/download
download
onLine
dataset
<p>During BioSWOT-Med, vertical phytonet hauls were performed from the R/V L’Atalante at three locations near water parcels sampled by <em>Zooglider</em>, two south of Menorca (Stas. M, M2) and one in the eddy (Sta. B3, Fig. 1a, Suppl. Table S1). Each haul was from 0-150 meters (m) with a 20-micrometer (µm) mesh net. Net collector contents were diluted to 1 liter (L) with filtered seawater. Two samples (60 milliliters (mL)) were fixed with acidified Lugols solution and buffered formaldehyde for light microscopy observations. One mL of the fresh net material was filtered onboard without fixative at low vacuum onto a 25-millimeter (mm) polycarbonate membrane and rinsed with MilliQ water, dried for 3 hours at 50 degrees Celsius (°C), then kept at room temperature for subsequent SEM analyses. Phytoplankton diversity was assessed by cell counts in light microscopy (Nikon TE200) while SEM samples were gold coated and analyzed on a Phenom ProX benchtop SEM. From the samples, diatom identification and measurements were made of the longest chains visible for each genus or species that was relatively abundant.</p>
Specified by the Principal Investigator(s)
<p>Data were tabulated in a spreadsheet.</p>
Specified by the Principal Investigator(s)
- Loaded sheet 3 from Excel file "BCO-DMO-DATASET_Lab_maximum_chain_lengths.xlsx" into the BCO-DMO system.
- Renamed columns to comply with BCO-DMO naming conventions.
- Saved the final file as "1001364_v1_maximum_chain_lengths.csv".
Specified by BCO-DMO Data Managers
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
Nikon TE200
Nikon TE200
PI Supplied Instrument Name: Nikon TE200 PI Supplied Instrument Description:Phytoplankton diversity was assessed by cell counts in light microscopy (Nikon TE200). Instrument Name: Microscope - Optical Instrument Short Name: Instrument Description: Instruments that generate enlarged images of samples using the phenomena of reflection and absorption of visible light. Includes conventional and inverted instruments. Also called a "light microscope". Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB05/
Phytoplankton Net
Phytoplankton Net
PI Supplied Instrument Name: Phytoplankton Net PI Supplied Instrument Description:Phytonet of diameter 0.57 m, mesh 20 um, retrieved vertically from 150-0 m. Instrument Name: Phytoplankton Net Instrument Short Name:Phytoplankton Net Instrument Description: A Phytoplankton Net is a generic term for a sampling net having mesh size of 150 microns or less that is used to collect phytoplankton. It is used only when detailed instrument documentation is not available. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/22/
Phenom ProX benchtop SEM
Phenom ProX benchtop SEM
PI Supplied Instrument Name: Phenom ProX benchtop SEM PI Supplied Instrument Description:SEM samples were gold coated and analyzed on a Phenom ProX benchtop SEM Instrument Name: Scanning Electron Microscope Instrument Short Name:SEM Instrument Description: A scanning electron microscope (SEM) scans a focused electron beam over a surface to create an image. The electrons in the beam interact with the sample, producing various signals that can be used to obtain information about the surface topography and composition.
Zooglider
Zooglider
PI Supplied Instrument Name: Zooglider PI Supplied Instrument Description:Measurements in this dataset were compared with measurements of comparable chain types imaged in situ by the Zoocam on Zooglider. Instrument Name: Zooglider Instrument Short Name: Instrument Description: Zooglider, designed and built at the Scripps Institution of Oceanography, as described in Ohman et al. (2019. Limnology and Oceanography-Methods 17: 69-86 doi 10.1002/lom3.10301). It is based on a Spray glider hull (Sherman et al. 2002. IEEE Journal of Oceanic Engineering 26: 437-446 doi 10.1109/48.972076), modified with custom optical and acoustic sampling instruments.
Cruise: BioSWOT-Med
BioSWOT-Med
R/V L'Atalante
Community Standard Description
International Council for the Exploration of the Sea
R/V L'Atalante
vessel
BioSWOT-Med
Andrea Doglioli
Aix-Marseille University
R/V L'Atalante
Community Standard Description
International Council for the Exploration of the Sea
R/V L'Atalante
vessel