http://lod.bco-dmo.org/id/dataset/915900
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
2023-11-30
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Zooplankton abundance and size data from Bongo plankton net tows conducted in the subtropical Southern California Bight during February and April 2021
2023-11-30
publication
2023-11-30
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2023-12-12
publication
https://doi.org/10.26008/1912/bco-dmo.915900.1
Brice X. Semmens
University of California-San Diego Scripps
principalInvestigator
Michael R. Landry
University of California-San Diego Scripps
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: Semmens, B. X., Landry, M. R. (2023) Zooplankton abundance and size data from Bongo plankton net tows conducted in the subtropical Southern California Bight during February and April 2021. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-11-30 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.915900.1 [access date]
Zooplankton abundance and size from Bongo plankton net tows Dataset Description: Methods and Sampling: <p>This study was carried out within the temperate to subtropical Southern California Bight and surrounding coastal areas between 32° and 35° N, and 117° and 120° W. Specific locations sampled fall within the CalCOFI and CCE-LTER programs' quarterly survey grid from lines 76.7 to 93.4 and stations 26 to 55.</p>
<p>Sampling took place during February 2021 and April 2021 on R/V Bob and Betty Beyster cruises BBB2102 and BBB2104 and on R/V Shearwater cruise SW2104. Each cruise was composed of one or more day trips using one of the two research vessels. The two-three letters in the cruise ID number indicate the research vessel and the four digits indicate YYMM.</p>
<p>Zooplankton were collected using a 71-centimeter (cm) diameter dual Bongo plankton net system equipped with a small CTD to record depth and physical variables during horizontal net tows at a ship speed of 1.5-2.5 knots down to 30-33 meters (m) depth. The Bongo was equipped with two nets, one with a 53-micrometer (µm) and the other with a 202 µm mesh size, and a flowmeter mounted in the center of each of the two nets.</p>
<p>Once the nets were retrieved, they were gently rinsed with saltwater. The content of the cod-ends was then concentrated onto a sieve of 50 µm mesh size, transferred into glass jars, and preserved in buffered 3.7% formaldehyde. The 53 µm samples were split using a 10-milliliter (mL) Hensen Stempel Pipette and sorted under a dissecting microscope. Zooplankton were identified based on morphological characteristics and measured using an eyepiece micrometer. The 202 µm samples were size fractioned into two replicate small (202 - 999 µm), one large (1000 - 4999 µm), and one extra large (&gt; 5000 µm) size fractions, split into appropriately sized subsamples using a Folsom splitter, and analyzed by ZooScan. The organism's images were then identified manually and sized using ImageJ. In most identified taxonomic groups, up to 30 individuals were size-measured and a target of 50 individuals were counted per sample. Length measurements represent the total body length for all organisms except copepodites where prosome length was measured instead. Width measurements were taken at the widest part of the body.</p>
<p><strong>Known problems or issues:</strong> Unicellular organisms such as dinoflagellates, diatoms, and tintinnids are underrepresented in the samples due to their small size and fragile structure.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2053719 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2053719
completed
Brice X. Semmens
University of California-San Diego Scripps
858-822-0518
MBRD, Scripps Institution of Oceanography 9500 Gilman Dr #0202
La Jolla
CA
92303-0202
USA
bsemmens@ucsd.edu
pointOfContact
Michael R. Landry
University of California-San Diego Scripps
858-534-4702
9500 Gilman Drive Mail Code: 0227
La Jolla
CA
92093-0227
USA
mlandry@ucsd.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Cruise
ISO_DateTime_UTC
ISO_DateTime_PDT
Line
St
Lat
Long
Tow_depth
Mesh_size
Taxa
Development_stage
ind_per_cubic_m
Avg_length
SD_length
Avg_width
SD_width
Num_Measured
71 cm diameter dual Bongo plankton net system
Folsom splitter
Zeiss Stemi 2000-C dissecting microscope
Hensen Stempel Pipette
ZooScan
theme
None, User defined
Cruise identfier
ISO_DateTime_UTC
ISO_DateTime_Local
site
station
latitude
longitude
depth_max
net mesh size
taxon
stage
abundance
length
width
number
featureType
BCO-DMO Standard Parameters
Bongo Net
Folsom Plankton Splitter
Microscope - Optical
Plankton sub-sampler
ZooSCAN
instrument
BCO-DMO Standard Instruments
BBB2102
BBB2104
SW2104
service
Deployment Activity
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.
RAPID: Understanding the unprecedented anchovy response to warm-water conditions in the California Current
https://osprey.bco-dmo.org/project/867657
RAPID: Understanding the unprecedented anchovy response to warm-water conditions in the California Current
<p><em>NSF Award Abstract:</em><br />
Like many species of small pelagic marine fish, recruitment and productivity of Northern Anchovy fluctuate by orders of magnitude among years. When abundant, the anchovy support a wide range of marine species, including marine mammals, seabirds and a diverse group of marine fishes. Anchovy, which previously thrived during periods of cool-water temperatures and strong coastal upwelling, are currently booming with abundances far in excess of any historical record, even though the California Current Ecosystem is experiencing an unprecedented marine heat wave. This unexpected occurrence challenges the most basic understanding of the mechanisms driving population dynamics in the species. This project is investigating the effects of trophic relationships on population productivity by capitalizing on the immediate research opportunity afforded by the novel, yet ephemeral, state of a local marine heat wave. Findings from the work are being used to develop a mechanistic model of coastal pelagic fish population dynamics generally, and anchovy dynamics in particular. Funded field and lab work are supporting opportunities for undergraduate training and research, and are generating open-access data that serve the research and teaching/training communities into the future.</p>
<p>This RAPID project augments the scheduled Fall research cruises jointly run by the California Cooperative Oceanic Fisheries Investigation and the California Current Ecosystem Long-Term Ecological Research programs. Together, these programs conduct regional oceanographic surveys that include anchovy spawning grounds and larval nursery areas. The RAPID-augmented sampling is designed to test the emerging hypothesis that anchovy populations are trophodynamically mediated at the larval stage, whereby high recruitment results from increased trophic transfer efficiency from the base of the food web. Larval diets and prey selection analyses are being paired with amino acid compound-specific isotope analysis (δ15N) of the larvae and prey field to generate detailed information on larval trophic ecology. Larval diets and plankton community structure are being related to available data on upwelling and productivity to assess environmental and biological drivers to trophic transfer efficiency. Collectively, these analyses are revealing how food chain length is regulated at the larval level through prey selection, at the prey level through community composition, and at the base of the food chain via coastal upwelling and primary production. Furthermore, this project is establishing whether the current trophic level of anchovy larvae is equal to that of historic population booms and if this is the result of favorable feeding conditions throughout their habitat. Findings from the study are generating a mechanistic understanding of the trophic underpinnings of small pelagic fish population productivity in coastal upwelling systems.</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
<p>Location Description:<br />
This study is carried out within the temperate to subtropical Southern California Bight and surrounding coastal areas between 32° and 35° N, and 117° and 120° W. Specific locations sampled fall within the CalCOFI and CCE-LTER programs quarterly survey grid from lines 76.7 to 93.4 and stations 26 to 55.</p>
<p>Project Affiliations:<br />
<a href="https://www.bco-dmo.org/project/2086" target="_blank">California Current Ecosystem Long-term Ecological Research Program (CCE-LTER)</a><br />
<a href="https://calcofi.org/">California Cooperative Oceanic Fisheries Investigations (CalCOFI)</a></p>
RAPID Anchovy Response
largerWorkCitation
project
eng; USA
oceans
-119.5062
-117.390867
32.847217
34.1796
2021-02-01
2021-04-15
Southern California Bight and surrounding coastal areas between 32° and 35° N, and 117° and 120° W
0
BCO-DMO catalogue of parameters from Zooplankton abundance and size data from Bongo plankton net tows conducted in the subtropical Southern California Bight during February and April 2021
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/916016.rdf
Name: Cruise
Units: unitless
Description: <p>Cruise identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/916017.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time (UTC) in ISO 8601 format</p>
http://lod.bco-dmo.org/id/dataset-parameter/916018.rdf
Name: ISO_DateTime_PDT
Units: unitless
Description: <p>Date and time (PDT) is ISO 8601 format</p>
http://lod.bco-dmo.org/id/dataset-parameter/916019.rdf
Name: Line
Units: unitless
Description: <p>CalCOFI line</p>
http://lod.bco-dmo.org/id/dataset-parameter/916020.rdf
Name: St
Units: unitless
Description: <p>CalCOFI station</p>
http://lod.bco-dmo.org/id/dataset-parameter/916021.rdf
Name: Lat
Units: decimal degrees
Description: <p>Latitude; positive values = North</p>
http://lod.bco-dmo.org/id/dataset-parameter/916022.rdf
Name: Long
Units: decimal degrees
Description: <p>Longitude; negative values = West</p>
http://lod.bco-dmo.org/id/dataset-parameter/916023.rdf
Name: Tow_depth
Units: meters (m)
Description: <p>Maximum depth of net</p>
http://lod.bco-dmo.org/id/dataset-parameter/916024.rdf
Name: Mesh_size
Units: micrometers (um)
Description: <p>Bongo net mesh size</p>
http://lod.bco-dmo.org/id/dataset-parameter/916025.rdf
Name: Taxa
Units: unitless
Description: <p>Zooplankton latin name (the taxonomic resolution varies between groups)</p>
http://lod.bco-dmo.org/id/dataset-parameter/916026.rdf
Name: Development_stage
Units: unitless
Description: <p>Zooplankton development stage</p>
http://lod.bco-dmo.org/id/dataset-parameter/916027.rdf
Name: ind_per_cubic_m
Units: individuals per cubic meter
Description: <p>Zooplankton abundance</p>
http://lod.bco-dmo.org/id/dataset-parameter/916028.rdf
Name: Avg_length
Units: micrometers (um)
Description: <p>Average zooplankton length</p>
http://lod.bco-dmo.org/id/dataset-parameter/916029.rdf
Name: SD_length
Units: micrometers (um)
Description: <p>Length standard deviation</p>
http://lod.bco-dmo.org/id/dataset-parameter/916030.rdf
Name: Avg_width
Units: micrometers (um)
Description: <p>Average zooplankton width</p>
http://lod.bco-dmo.org/id/dataset-parameter/916031.rdf
Name: SD_width
Units: micrometers (um)
Description: <p>Width standard deviation</p>
http://lod.bco-dmo.org/id/dataset-parameter/916032.rdf
Name: Num_Measured
Units: unitless
Description: <p>Number of organisms that were size measured</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
44143
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/e6741c3b-02da-4f6d-b885-d0d2b7f2a5cf/content
download
https://doi.org/10.26008/1912/bco-dmo.915900.1
download
onLine
dataset
<p>This study was carried out within the temperate to subtropical Southern California Bight and surrounding coastal areas between 32° and 35° N, and 117° and 120° W. Specific locations sampled fall within the CalCOFI and CCE-LTER programs' quarterly survey grid from lines 76.7 to 93.4 and stations 26 to 55.</p>
<p>Sampling took place during February 2021 and April 2021 on R/V Bob and Betty Beyster cruises BBB2102 and BBB2104 and on R/V Shearwater cruise SW2104. Each cruise was composed of one or more day trips using one of the two research vessels. The two-three letters in the cruise ID number indicate the research vessel and the four digits indicate YYMM.</p>
<p>Zooplankton were collected using a 71-centimeter (cm) diameter dual Bongo plankton net system equipped with a small CTD to record depth and physical variables during horizontal net tows at a ship speed of 1.5-2.5 knots down to 30-33 meters (m) depth. The Bongo was equipped with two nets, one with a 53-micrometer (µm) and the other with a 202 µm mesh size, and a flowmeter mounted in the center of each of the two nets.</p>
<p>Once the nets were retrieved, they were gently rinsed with saltwater. The content of the cod-ends was then concentrated onto a sieve of 50 µm mesh size, transferred into glass jars, and preserved in buffered 3.7% formaldehyde. The 53 µm samples were split using a 10-milliliter (mL) Hensen Stempel Pipette and sorted under a dissecting microscope. Zooplankton were identified based on morphological characteristics and measured using an eyepiece micrometer. The 202 µm samples were size fractioned into two replicate small (202 - 999 µm), one large (1000 - 4999 µm), and one extra large (&gt; 5000 µm) size fractions, split into appropriately sized subsamples using a Folsom splitter, and analyzed by ZooScan. The organism's images were then identified manually and sized using ImageJ. In most identified taxonomic groups, up to 30 individuals were size-measured and a target of 50 individuals were counted per sample. Length measurements represent the total body length for all organisms except copepodites where prosome length was measured instead. Width measurements were taken at the widest part of the body.</p>
<p><strong>Known problems or issues:</strong> Unicellular organisms such as dinoflagellates, diatoms, and tintinnids are underrepresented in the samples due to their small size and fragile structure.</p>
Specified by the Principal Investigator(s)
<p>The flowmeter was calibrated between cruises to accurately calculate the volume of water strained by the 53 and 202 µm nets and the abundance of zooplankton.</p>
Specified by the Principal Investigator(s)
- Imported original file "Zooplankton abundance data from Bongo plankton net tows.xlsx" into the BCO-DMO system.
- Marked 'nd' as a missing data value (missing data are blank/empty in the final CSV file).
- Created local and UTC date/time fields in ISO 8601 format; removed original separate date and time columns.
- Rounded numeric fields.
- Saved the final file as "915900_v1_zooplankton_abund_and_size.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
71 cm diameter dual Bongo plankton net system
71 cm diameter dual Bongo plankton net system
PI Supplied Instrument Name: 71 cm diameter dual Bongo plankton net system PI Supplied Instrument Description:Zooplankton were collected using a 71 cm diameter dual Bongo plankton net system equipped with a small CTD to record depth and physical variables during horizontal net tows at a ship speed of 1.5-2.5 knots down to 30-33 m depth. The Bongo was equipped with two nets, one with a 53 µm and the other with a 202 µm mesh sized, and a flowmeter mounted in the center of each of the two nets. Instrument Name: Bongo Net Instrument Short Name:Bongo Net Instrument Description: A Bongo Net consists of paired plankton nets, typically with a 60 cm diameter mouth opening and varying mesh sizes, 10 to 1000 micron. The Bongo Frame was designed by the National Marine Fisheries Service for use in the MARMAP program. It consists of two cylindrical collars connected with a yoke so that replicate samples are collected at the same time. Variations in models are designed for either vertical hauls (OI-2500 = NMFS Pairovet-Style, MARMAP Bongo, CalVET) or both oblique and vertical hauls (Aquatic Research). The OI-1200 has an opening and closing mechanism that allows discrete "known-depth" sampling. This model is large enough to filter water at the rate of 47.5 m3/minute when towing at a speed of two knots. More information: Ocean Instruments, Aquatic Research, Sea-Gear Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/NETT0009/
Folsom splitter
Folsom splitter
PI Supplied Instrument Name: Folsom splitter PI Supplied Instrument Description:The 202 µm samples were size fractioned into two replicate small (202 - 999 µm), one large (1000 - 4999 µm) and one extra large (> 5000 µm) size fractions, split into appropriately sized subsamples using a Folsom splitter, and analyzed by ZooScan Instrument Name: Folsom Plankton Splitter Instrument Short Name:Folsom Splitter Instrument Description: A device for sub-sampling of plankton and ichthyoplankton samples by splitting, developed by Dr. Folsom of the Scripps Institute of Oceanography. Ideally suited for splitting plankton samples with minimal debris. A measured volume of plankton sample is placed in the undivided section of the drum. This is rotated 120 degrees to divide the stirred sample with a separating blade. Standard Methods suggests splitting until a subsample of 200-500 individuals is obtained.
Zeiss Stemi 2000-C dissecting microscope
Zeiss Stemi 2000-C dissecting microscope
PI Supplied Instrument Name: Zeiss Stemi 2000-C dissecting microscope PI Supplied Instrument Description:The 53 µm samples were split using a 10 ml Hensen Stempel Pipette, sorted under a dissecting microscope and zooplankton identified based on morphological characteristics and measured using an eyepiece micrometer 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/
Hensen Stempel Pipette
Hensen Stempel Pipette
PI Supplied Instrument Name: Hensen Stempel Pipette PI Supplied Instrument Description:The 53 µm samples were split using a 10 ml Hensen Stempel Pipette, sorted under a dissecting microscope and zooplankton identified based on morphological characteristics and measured using an eyepiece micrometer. Instrument Name: Plankton sub-sampler Instrument Short Name: Instrument Description: Various devices for sub-sampling plankton samples
Folsom splitter: http://www.aquaticresearch.com/folsom_plankton_splitter.htm
Motoda box splitter: http://www.aquaticresearch.com/motodo_plankton_splitter.htm
Hensen Stempel Pippette: http://www.envcoglobal.com/catalog/product/plankton-counting/hensen-stempel-pipettes.html
Sedgewick-Rafter Plankton Counting Chamber: http://www.benmeadows.com/wildco-sedgewick-rafter-counting-chambers_36816595/
ZooScan
ZooScan
PI Supplied Instrument Name: ZooScan PI Supplied Instrument Description:The 202 µm samples were size fractioned into two replicate small (202 - 999 µm), one large (1000 - 4999 µm) and one extra large (> 5000 µm) size fractions, split into appropriately sized subsamples using a Folsom splitter, and analyzed by ZooScan. Instrument Name: ZooSCAN Instrument Short Name: Instrument Description: Description excerpt from Hydroptic website
http://www.hydroptic.com/index.php/public/Page/product_item/ZOOSCAN
The ZooSCAN (CNRS patent) system makes use of scanner technology with custom lighting and a watertight scanning chamber into which liquid zooplankton samples can be placed. The scanner recovers a high-resolution, digitial image and the sample can be recovered without damage. These digital images can then be investigated by computer processing. While the resolution of the digitized zooplankton images is lower than the image obtained using a binocular microscope this technique has proved to be more than adequate for large sample sets. Identification of species is done by automatic comparison of the image (vignette) of each individual animal in the scanned image with a library data set which may be built by the investigator for each individual survey or imported from a previous survey. The latest machine learning algorithm allows high recognition levels even if we recommend complementary manual sorting to achieve a high number of taxonomic groups.
Cruise: BBB2102
BBB2102
R/V Bob and Betty Beyster
R/V Bob and Betty Beyster
vessel
BBB2102
Rasmus Swalethorp
University of California-San Diego Scripps
Cruise: BBB2104
BBB2104
R/V Bob and Betty Beyster
R/V Bob and Betty Beyster
vessel
BBB2104
Rasmus Swalethorp
University of California-San Diego Scripps
Cruise: SW2104
SW2104
Community Standard Description
International Council for the Exploration of the Sea
R/V Shearwater
vessel
SW2104
Rasmus Swalethorp
University of California-San Diego Scripps
R/V Bob and Betty Beyster
R/V Bob and Betty Beyster
vessel
Community Standard Description
International Council for the Exploration of the Sea
R/V Shearwater
vessel