Rapid Population Collapse of a Key Marine Predator in the Northern Antarctic Peninsula - Antarctic Fur Seal Population Dynamics
Southwest Fisheries Science Center
Data Set
(DS)
| ID: 66326
| Published / External
Created: 2022-01-04
|
Last Modified: 2023-08-15
Project (PRJ) | ID: 31107
ID: 66326
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | Rapid Population Collapse of a Key Marine Predator in the Northern Antarctic Peninsula - Antarctic Fur Seal Population Dynamics |
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Short Name | |
* Status | Completed |
Creation Date | 2022-01-04 |
Revision Date | 2022-01-04 |
• Publication Date | 2022-01-03 |
* » Abstract |
Antarctic fur seals (AFS) are an ecologically important predator and a focal indicator species for ecosystem-based Antarctic fisheries management. This species suffered intensive anthropogenic exploitation until the early 1900s, but recolonized most of its former distribution, including the southern-most colony at Cape Shirreff, South Shetland Islands (SSI). The IUCN describes a single, global AFS population of least concern; however, extensive genetic analyses clearly identify four distinct breeding stocks, including one in the SSI. To update the population status of SSI AFS, we analyzed 20 years of field-based data including population counts, body size and condition, natality, recruitment, foraging behaviors, return rates, and pup mortality at the largest SSI colony. Our findings show a precipitous decline in AFS abundance (86% decrease since 2007), likely driven by leopard seal predation (increasing since 2001, p << 0.001) and potentially worsening summer foraging conditions. We estimated that leopard seals consumed an average of 69.3% (range: 50.3â80.9%) of all AFS pups born each year since 2010. AFS foraging-trip durations, an index of their foraging habitat quality, were consistent with decreasing krill and fish availability. Significant improvement in the age-specific over-winter body condition of AFS indicates that observed population declines are driven by processes local to the northern Antarctic Peninsula. The loss of SSI AFS would substantially reduce the genetic diversity of the species, and decrease its resilience to climate change. There is an urgent need to reevaluate the conservation status of Antarctic fur seals, particularly for the rapidly declining SSI population. |
* Purpose |
To provide empirical data documenting the rapid decline of Antarctic Fur Seals at Cape Shirreff, as well as the important genetic diversity of this population. |
Notes |
Supplementary Data from Krause DJ, Bonin CA, Goebel ME, Reiss CS and Watters GM (2022) The Rapid Population Collapse of a Key Marine Predator in the Northern Antarctic Peninsula Endangers Genetic Diversity and Resilience to Climate Change. Front. Mar. Sci. 8:796488. doi: 10.3389/fmars.2021.796488 |
Other Citation Details |
Krause DJ, Bonin CA, Goebel ME, Reiss CS and Watters GM (2022) The Rapid Population Collapse of a Key Marine Predator in the Northern Antarctic Peninsula Endangers Genetic Diversity and Resilience to Climate Change. Front. Mar. Sci. 8:796488. doi: 10.3389/fmars.2021.796488 |
• Supplemental Information | |
DOI (Digital Object Identifier) | 10.3389/fmars.2021.796488 |
DOI Registration Authority | DOI Registration Authority |
DOI Issue Date | 2022-01-03 |
Keywords
Theme Keywords
Thesaurus | Keyword |
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None | Antarctic fur seal |
None | Arctocephalus gazella |
None | conservation status |
None | edge population |
None | population dynamics (ecology) |
None | Top-down and bottom-up control |
Temporal Keywords
Thesaurus | Keyword |
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* Spatial Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Location Keywords | CONTINENT > ANTARCTICA > ANTARCTIC PENINSULA |
None | Cape Shirreff |
None | Livingston Island |
None | San Telmo Islets |
None | South Shetland Islands |
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Physical Location
• » Organization | Southwest Fisheries Science Center |
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• » City | La Jolla |
• » State/Province | CA |
• Country | USA |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | flat files |
• Maintenance Frequency | None Planned |
Maintenance Note | |
» Data Presentation Form | Table (digital) |
• Entity Attribute Overview | |
Entity Attribute Detail Citation | |
Entity Attribute Detail URL | |
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 and collaborators |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2022 |
Date Effective To | |
Person | Woodman, Sam |
Address |
8901 La Jolla Shores Dr La Jolla, CA 92037 USA |
Email Address | sam.woodman@noaa.gov |
Phone | 858-546-7138 |
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* » Support Role | Distributor |
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* » Date Effective From | 2022 |
Date Effective To | |
Organization | Southwest Fisheries Science Center (SWFSC) |
Address |
8901 La Jolla Shores Dr. La Jolla, CA 92037 USA |
Email Address | |
Phone | (858)546-7000 |
Fax | |
Mobile | |
URL | http://swfsc.noaa.gov/ |
Business Hours | 8:00-16:30 |
Contact Instructions |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2022 |
Date Effective To | |
Person | Krause, Douglas |
Email Address | douglas.krause@noaa.gov |
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* » Support Role | Point of Contact |
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* » Date Effective From | 2022 |
Date Effective To | |
Person | Krause, Douglas |
Email Address | douglas.krause@noaa.gov |
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Extents
Currentness Reference |
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Extent Group 1
Extent Description |
FAO Area 48.1, CCAMLR Area 48.1, Antarctic Peninsula, South Shetland Islands, South Orkney Islands |
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Extent Group 1 / Geographic Area 1
* » W° Bound | -64 |
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* » E° Bound | -43 |
* » N° Bound | -58 |
* » S° Bound | -65 |
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* » Time Frame Type | Range |
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* » Start | 2001 |
End | 2020 |
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Access Information
Data License | |
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* » Security Class | Unclassified |
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• Data Access Policy |
Available online at https://www.frontiersin.org/articles/10.3389/fmars.2021.796488/full#supplementary-material |
» Data Access Procedure |
https://www.frontiersin.org/articles/10.3389/fmars.2021.796488/full#supplementary-material |
• » Data Access Constraints |
None |
• Data Use Constraints |
None |
Metadata Access Constraints |
None |
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None |
Distribution Information
Start Date | |
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» Download URL | https://www.frontiersin.org/articles/10.3389/fmars.2021.796488/full#supplementary-material |
Distributor | Southwest Fisheries Science Center (SWFSC) (2022 - Present) |
File Name | 5773724.zip |
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File Type (Deprecated) | Zip |
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Compression | Zip |
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URLs
URL | https://www.fisheries.noaa.gov/about/antarctic-ecosystem-research-division-southwest-fisheries-science-center |
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Name | U.S. Antarctic Marine Living Resources (US-AMLR) Program |
URL Type | Online Resource |
File Resource Format | |
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NOAA, NMFS, SWFSC, Antarctic Ecosystem Research Division |
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Data were collected using agreed, standard field protocols. |
» Quality Control Procedures Employed |
Data Management
» Have Resources for Management of these Data Been Identified? | No |
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» Approximate Percentage of Budget for these Data Devoted to Data Management | Unknown |
» Do these Data Comply with the Data Access Directive? | Yes |
» Is Access to the Data Limited Based on an Approved Waiver? | No |
» If Distributor (Data Hosting Service) is Needed, Please Indicate | |
» Approximate Delay Between Data Collection and Dissemination | Two years |
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed | |
» 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
» Lineage Statement |
Raw data are collected by researchers at land based stations, entered into data files, reviewed for QA/QC and later on shore-based servers. |
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Child Items
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Related Items
Item Type | Relationship Type | Title |
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Catalog Details
Catalog Item ID | 66326 |
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Metadata Record Created By | Sam Woodman |
Metadata Record Created | 2022-01-04 23:19+0000 |
Metadata Record Last Modified By | SysAdmin InPortAdmin |
» Metadata Record Last Modified | 2023-08-15 17:09+0000 |
Metadata Record Published | 2022-01-04 |
Owner Org | SWFSC |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2022-01-04 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2023-01-04 |
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