Aerial Survey Counts of Harbor Seals in Coastal Alaska (2003-2011)
Alaska Fisheries Science Center
Data Set
(DS)
| ID: 26741
| Published / External
Created: 2015-08-31
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Last Modified: 2024-04-17
Project (PRJ) | ID: 67180
ID: 26741
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | Aerial Survey Counts of Harbor Seals in Coastal Alaska (2003-2011) |
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Short Name | Aerial Survey Counts of Harbor Seals in Coastal Alaska (2003-2011) |
* Status | In Work |
Creation Date | |
Revision Date | |
• Publication Date | |
* » Abstract |
This dataset supports efforts to estimate the abundance and trends in population size of Alaska harbor seals. Annual surveys of harbor seal populations are fundamental to estimation of seal abundance, distribution, and trends, which in turn are essential for stock assessment, conservation, and management. The most feasible approach to determining harbor seal distribution and abundance is to use aircraft to count seals when they haul out of the water and are visible. Harbor seals in Alaska occupy a geographically extensive range from approximately long. 172ºE to 130ºW (over 3,500 km east to west) and from lat. 51ºN to 61.5ºN (over 1,000 km north to south). Estimation of the abundance of harbor seals statewide requires broad-scale aerial surveys and these surveys have been conducted by NOAA Fisheries, the Alaska Department of Fish and Game, and other collaborators since the early 1980s. This dataset reflects counts of harbor seals from surveys conducted between 2003 and 2011. This dataset differs from earlier datasets in a few key areas: 1) records generally correspond to a count of the number of harbor seals within a single, geo-referenced digital photo, 2) photographs were not taken when no seals were present so additional analysis of survey effort and flight tracks was required to determine 0 counts. |
* Purpose |
The purpose of this dataset is to provide a single collection of harbor seal counts from aerial surveys conducted in Alaska between 2003 and 2011. |
Notes | |
Other Citation Details |
London, J.M., K.M. Yano, D.E. Withrow, J.K. Jansen, S.P. Dahle, H.L. Ziel, G.M. Brady, M.F. Cameron, J.M. Ver Hoef, and P.L. Boveng (2015): Aerial Survey Counts of Harbor Seals in Coastal Alaska (2004-2011). Alaska Fisheries Science Center, National Oceanic and Atmospheric Administration. --doi:TBD, contact authors for updated citation details-- |
• Supplemental Information | |
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Keywords
Theme Keywords
Thesaurus | Keyword |
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ISO 19115 Topic Category | biota |
ISO 19115 Topic Category | environment |
Geographic Names Information System | Aleutian Islands |
Geographic Names Information System | Bristol Bay |
Integrated Taxonomic Information systems (ITIS) | Harbor Seal |
None | aerial survey |
Temporal Keywords
Thesaurus | Keyword |
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* Spatial Keywords
Thesaurus | Keyword |
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Geographic Names Information System | Alaska |
Geographic Names Information System | Gulf of Alaska |
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Physical Location
• » Organization | Alaska Fisheries Science Center |
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• » City | Seattle |
• » State/Province | WA |
• Country | USA |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | CSV Files |
• Maintenance Frequency | As Needed |
Maintenance Note | |
» Data Presentation Form | Table (digital) |
• Entity Attribute Overview | |
Entity Attribute Detail Citation | |
Entity Attribute Detail URL | |
Distribution Liability |
While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. |
Data Set Credit | London, J.M., K.M. Yano, D.E. Withrow, J.K. Jansen, S.P. Dahle, H.L. Ziel, G.M. Brady, M.F. Cameron, J.M. Ver Hoef, and P.L. Boveng (2015): Aerial Survey Counts of Harbor Seals in Coastal Alaska (2004-2011). Alaska Fisheries Science Center, National Oceanic and Atmospheric Administration. --doi:TBD, contact authors for updated citation details-- |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2024-03-06 |
Date Effective To | |
Person | Koslovsky, Stacie |
Address |
7600 Sand Point Way NE Seattle, WA 98115-6349 |
Email Address | stacie.koslovsky@noaa.gov |
Phone | 206-526-6433 |
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Contact Instructions |
* » Support Role | Distributor |
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* » Date Effective From | 2015-11-01 |
Date Effective To | |
Organization | Alaska Fisheries Science Center (AFSC) |
Address |
7600 Sand Point Way N.E., Building 4 Seattle, WA 98115 USA |
Email Address | afsc.webmaster@noaa.gov |
Phone | (206) 526-4000 |
Fax | (206) 526-4004 |
Mobile | |
URL | https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center |
Business Hours | 0700-1700 Pacific Time |
Contact Instructions |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2024-03-06 |
Date Effective To | |
Person | Koslovsky, Stacie |
Address |
7600 Sand Point Way NE Seattle, WA 98115-6349 |
Email Address | stacie.koslovsky@noaa.gov |
Phone | 206-526-6433 |
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Contact Instructions |
* » Support Role | Originator |
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* » Date Effective From | 2015-11-01 |
Date Effective To | |
Organization | Alaska Fisheries Science Center (AFSC) |
Address |
7600 Sand Point Way N.E., Building 4 Seattle, WA 98115 USA |
Email Address | afsc.webmaster@noaa.gov |
Phone | (206) 526-4000 |
Fax | (206) 526-4004 |
Mobile | |
URL | https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center |
Business Hours | 0700-1700 Pacific Time |
Contact Instructions |
* » Support Role | Point of Contact |
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* » Date Effective From | 2024-03-06 |
Date Effective To | |
Person | Cameron, Mike |
Email Address | michael.cameron@noaa.gov |
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Extents
Currentness Reference | Ground Condition |
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Extent Group 1
Extent Description |
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Extent Group 1 / Geographic Area 1
* » W° Bound | 172 |
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* » E° Bound | -130 |
* » N° Bound | 61.5 |
* » S° Bound | 51 |
* » Description |
All coastal habitats (intertidal and offshore rocks and reefs) of Alaska south 61.5 degrees North or Cape Newenham in Bristol Bay |
Extent Group 1 / Vertical Extent
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Extent Group 1 / Time Frame 1
* » Time Frame Type | Range |
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* » Start | 2003 |
End | 2011 |
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Spatial Information
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Access Information
Data License | |
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Data License Statement | |
* » Security Class | Unclassified |
* Security Classification System | |
Security Handling Description | |
• Data Access Policy |
The data set is in the process of being archived with the NOAA National Centers for Environmental Information. Once the archival process is complete and verified, the data set will be publicly available. Acknowledge NOAA/NMFS/AFSC as the source from which these data were obtained in any publications and/or other representations of these data. Communication and collaboration with dataset authors is strongly encouraged prior to use. |
» Data Access Procedure |
The data set is in the process of being archived with the NOAA National Centers for Environmental Information. Once the archival process is complete and verified, the data set will be publicly available. |
• » Data Access Constraints |
The data set is in the process of being archived with the NOAA National Centers for Environmental Information. Once the archival process is complete and verified, the data set will be publicly available. |
• Data Use Constraints |
User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. Acknowledge NOAA/NMFS/AFSC or the specified citation as the source from which these data were obtained in any publications and/or other representations of these data. Communication and collaboration with dataset authors is strongly encouraged. |
Metadata Access Constraints |
no metadata access constraints |
Metadata Use Constraints |
Metadata are subject to revision at any time and information within the metadata record should not be cited without author consent. While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. |
Distribution Information
Start Date | |
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» Download URL | https://console.cloud.google.com/storage/browser/_details/nmfs_odp_afsc/MML/PEP/Aerial%20Survey%20Counts%20of%20Harbor%20Seals%20in%20Coastal%20Alaska%20%282003-2011%29.csv |
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Note: Dataset migrated by Dan Woodrich (AFSC data management coordinator) on 12/15/2021. Contact: Daniel.woodrich@noaa.gov |
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» Quality Control Procedures Employed |
Data represented in this dataset are the result of a culmination of multiple observations, data collection protocols and spatial analysis. Through the process various checks are performed to insure data are of the highest quality. These include, but are not limited to: collection of geographic coordinates with high resolution GPS units, high resolution navigational systems on board the aircraft, the use of high resolution DSLR cameras and quality lenses, synching camera time with GPS provided time, and counting of photographs on large, high quality screens with modern software. Despite these quality control checks, users of these data must understand the data are often collected under challenging field conditions and additional processing and testing must be done before these data can be used appropriately. |
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? | No |
» Is Access to the Data Limited Based on an Approved Waiver? | No |
» If Distributor (Data Hosting Service) is Needed, Please Indicate | not needed, planned for NCEI-MD |
» Approximate Delay Between Data Collection and Dissemination | unknown |
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed |
data are not automatically processed |
» Actual or Planned Long-Term Data Archive Location | NCEI-MD |
» Approximate Delay Between Data Collection and Archiving | unknown |
» How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive? |
IT Security and Contingency Plan for the system establishes procedures and applies to the functions, operations, and resources necessary to recover and restore data as hosted in the Western Regional Support Center in Seattle, Washington, following a disruption. |
Lineage
» Lineage Statement |
Data collection and processing protocols were updated and improved on a nearly annual basis during the 2003-2011 period. For example, aerial survey observers transitioned from using paper maps and rudimentary GPS units to using advanced GPS units and moving map software on laptop computers for in-flight navigation and data recording purposes. 35 mm film cameras were replaced by digital SLR cameras with new, higher-resolution models being added every few years. And the seal counting process transitioned from projecting slides on a white board to using computers with photo-processing software and high-resolution monitors to mark and count individual seals. In most cases, records within this dataset represent seal counts within a single, geo-referenced photograph taken by a trained observer during dedicated aerial surveys for harbor seals. |
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Acquisition Information
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Child Items
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Related Items
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Catalog Details
Catalog Item ID | 26741 |
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Metadata Record Created By | Josh London |
Metadata Record Created | 2015-08-31 18:09+0000 |
Metadata Record Last Modified By | Cynthia Christman |
» Metadata Record Last Modified | 2024-04-17 22:41+0000 |
Metadata Record Published | 2024-04-03 |
Owner Org | AFSC |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2022-05-05 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2023-05-05 |
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