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Short Citation:
Southwest Fisheries Science Center, 2023: US AMLR Program zooplankton dataset,

Item Identification

Title: US AMLR Program zooplankton dataset
Short Name: US AMLR Program zooplankton dataset
Status: In Work
Creation Date: 1992
Publication Date: Unknown

Zooplankton research in the US AMLR Program focuses on the link between prey production, availability, and climate variability in relation to predator and fishery demands. Annual studies include estimates of krill abundance, and experiments to develop and enhance hydro-acoustic methodologies. Long-term objectives include quantifying the inter-annual and decadal mesoscale (10's to 100's of kilometers) variability in water mass structure, phytoplankton biomass and productivity, and zooplankton (especially krill) associated with potential basin scale climate forcing. Conversely, the microscale (1 to 10's of kilometers) features of the distribution and abundance of krill within the foraging range of krill predators breeding at Cape Shirreff and Admiralty Bay is also studied to resolve local and remote forcing effects on predator foraging success.


The Antarctic Marine Living Resources (AMLR) Convention Act of 1984 provided the legislative authority to establish the U.S. AMLR Program. This national program provides information needed for the development and support of U.S. policy regarding the conservation and management of the marine living resources in the ocean areas surrounding Antarctica.

Other Citation Details:

The datasets incorporated into this archive have been collected by researchers affiliated with the U.S. Antarctic Marine Living Resources (AMLR) Program under the National Marine Fisheries Service (NMFS). These data are part of a long term ecosystem project centered on the South Shetland Islands off the Antarctic Peninsula, Antarctica. Funding for this project was from the NMFS AMLR Program. Data were collected from land and ship based platforms.


Theme Keywords

Thesaurus Keyword
None acoustics
None bathymetry
None benthic
None bioacoustic
None biomass
None chinstrap
None chlorophyll
None copepod
None CTD
None ecosystem
None environmental
None finfish
None fish
None fur seal
None gentoo
None invertebrate
None krill
None marine
None myctophids
None oceanography
None penguins
None phytoplankton
None pinniped
None population
None salinity
None salps
None satellite
None seabed
None seals
None skua
None surveys
None temperature
None trawl
None weather
None zooplankton

Spatial Keywords

Thesaurus Keyword
None Admiralty Bay
None Antarctic
None Antarctica
None Bransfield Strait
None Cape Shirreff
None Chile
None Clarence Island
None Copacabana
None Deception Island
None Drake Passage
None Elephant Island
None King George Island
None Livingston Island
None Peninsula
None San Telmo Islands
None Seal Island
None South Shetlands

Physical Location

Organization: Southwest Fisheries Science Center
City: La Jolla
State/Province: CA
Country: USA

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: Mixed
Maintenance Frequency: As Needed
Data Presentation Form: Document (digital)
Entity Attribute Overview:

Primary sample processing is conducted in laboratory compartments within the ship. Antarctic krill (Euphausia superba) are separated from the catch and enumerated; a sub-sample of salps (Salpa thompsoni) are separated, counted and measured; other adult and larval euphausiids, ichthyoplankton,

and zooplankton material are identified, counted, and preserved (varies by year depending on availability of funds). Sub-samples of E. superba from each tow

are processed in the on-board laboratory space to determine the distribution of krill length, maturity stage, sex ratio, and reproductive condition. Myctophid fish are processed to determine sex, morphometric measurements,

species, stomach contents, etc. Breadth of sampling is determined each year depending on funding availability for resources, staff and sea days.

Distribution Liability:

Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the National Marine Fisheries Service, US AMLR or its partners.

Data Set Credit: US Antarctic Marine Living Resources Program, NOAA

Support Roles

Data Steward

CC ID: 864585
Date Effective From: 2019
Date Effective To:
Contact (Person): Woodman, Sam
Address: 8901 La Jolla Shores Dr
La Jolla, CA 92037
Email Address:
Phone: 858-546-7138


CC ID: 864586
Date Effective From: 2019
Date Effective To:
Contact (Organization): Southwest Fisheries Science Center (SWFSC)
Address: 8901 La Jolla Shores Dr.
La Jolla, CA 92037
Phone: (858)546-7000
Business Hours: 8:00-16:30

Metadata Contact

CC ID: 864587
Date Effective From: 2019
Date Effective To:
Contact (Person): Reiss, Christian
Email Address:

Point of Contact

CC ID: 864588
Date Effective From: 2019
Date Effective To:
Contact (Person): Reiss, Christian
Email Address:


Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 44461
W° Bound: -64
E° Bound: -43
N° Bound: -58
S° Bound: -65

FAO Area 48.1, CCAMLR Area 48.1, Antarctic Peninsula, South Shetland Islands, South Orkney Islands

Extent Group 1 / Time Frame 1

CC ID: 44462
Time Frame Type: Continuing
Start: 1992

Access Information

Security Class: Unclassified
Data Access Policy:

Available upon request; response time varies based on data management resources available at the time of the request.

Data Access Procedure:

Contact AMLR Point of Contact as provided above.

Data Access Constraints:


Data Use Constraints:


Metadata Access Constraints:


Metadata Use Constraints:


Distribution Information

Distribution 1

CC ID: 269880
Distributor: Southwest Fisheries Science Center (SWFSC) (2019 - Present)
File Name: Zooplankton Data
File Type (Deprecated): Zip
Compression: Zip



CC ID: 272428
Name: U.S. Antarctic Marine Living Resources (US-AMLR) Program
URL Type:
Online Resource
File Resource Format: PDF

NOAA, NMFS, SWFSC, Antarctic Ecosystem Research Division

Data Quality


Generally, volume of abundnace is =/- 10% between tows.

Quality Control Procedures Employed:

Standardized data collection and processing methods are used.

Data Management

Have Resources for Management of these Data Been Identified?: No
Approximate Percentage of Budget for these Data Devoted to Data Management: Unknown
Do these Data Comply with the Data Access Directive?: No
Is Access to the Data Limited Based on an Approved Waiver?: No
Approximate Delay Between Data Collection and Dissemination: Two years
Actual or Planned Long-Term Data Archive Location: NCEI-CO
Approximate Delay Between Data Collection and Archiving: Two years
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

Data are stored on a server at the Southwest Fisheries Science Center which has all appropriate access controls.


Lineage Statement:

Trawl samples are analysed and entered into data files on board vessel, or returned to laboratory for analysis and entered into data files at the SWFSC. Post sample analysis requires QA/QC.

Acquisition Information


Instrument 1

CC ID: 864807
Identifier: Isaac-Kidd Midwater Trawl (IKMT)
Instrument / Gear: Gear
Instrument Type: Trawl Nets

The Isaacs-Kidd Midwater Trawl (IKMT) is used to collect deep water biological specimens larger than those taken by standard plankton nets. The mouth of the net is attached to a wide, V-shaped, rigid diving vane that keeps the mouth of the net open and maintains the net at depth for extended periods


Platform 1

CC ID: 864837
Identifier: R/V Moana Wave
Docucomp UUID: 0a8ac4f4-e144-466d-a347-ce6887268df1

R/V Moana Wave

Mounted Instrument 1

Identifier: Isaac-Kidd Midwater Trawl (IKMT)

Platform 2

CC ID: 864839
Identifier: R/V Yuzhmorgeologiya

R/V Yuzhmorgeologiya

Mounted Instrument 1

Identifier: Isaac-Kidd Midwater Trawl (IKMT)

Platform 3

CC ID: 864835
Identifier: Surveyor
Docucomp UUID: 77553a10-dbbb-4d6e-bcc1-449c974a1250

In service 1960-1995. NOAA Ship Surveyor (S 132) worked in the Pacific Ocean from the Beaufort Sea to the Palmer Peninsula of Antarctica during its career. Known affectionately as "Old Workhorse" by those who served, this was the first NOAA ship equipped with a deep-water multi-beam echosounder. This ship conducted hydrographic surveys in areas ranging from Norton Sound Alaska to American Samoa. It was the primary ship for studying the Alaskan Arctic for the Outer Continental Shelf Environmental Assessment Program (OCSEAP) and the primary ship for studying Antarctic Marine Living Resources (AMLR.) It was the first NOAA ship equipped with a deep-water multi-beam system and conducted multi-beam surveys on the United States West Coast, off the southern coast of Alaska, throughout the Juan de Fuca Ridge area, and in Hawaiian waters. This ship is commemorated by Surveyor Fracture Zone, Surveyor Gap, and Surveyor Seachannel. It discovered Axial Seamount on Endeavor Ridge, a seamount that has apparently been split in half by seafloor spreading.

Mounted Instrument 1

Identifier: Isaac-Kidd Midwater Trawl (IKMT)

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity Zooplankton Data

Catalog Details

Catalog Item ID: 11426
GUID: gov.noaa.nmfs.inport:11426
Metadata Record Created By: Stephanie Sexton
Metadata Record Created: 2011-11-04 17:06+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-08-15 17:09+0000
Metadata Record Published: 2019-07-24
Owner Org: SWFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2019-07-24
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2020-07-24