AFSC/NMML: Southeast Alaska Cetacean Vessel Surveys, 1991 - 2012
In 1991, NMML initiated cetacean studies with vessel coverage throughout inland waters of Southeast Alaska. Between 1991 and 1993, line-transect methodology was used to: 1) obtain population estimates of both harbor porpoise and Dalls porpoise, 2) establish a baseline for detecting trends in porpoise abundance, and 3) define porpoise distributional patterns and seasonality. Three line-transect surveys were carried out each year spanning spring, summer, and fall. To update abundance and trends for both harbor porpoise and Dalls porpoise, NMML once again initiated line-transect surveys in 2006 (spring and summer), 2007 (spring, summer and fall), 2010 (summer and fall), 2011 (summer and fall), and 2012 (summer) using methods comparable to those used in the early 1990s.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{
"fn": "Clapham, Phillip",
"@type": "vcard:Contact",
"hasEmail": "mailto:phillip.clapham@noaa.gov"
}
|
| describedByType | application/octet-steam |
| description | In 1991, NMML initiated cetacean studies with vessel coverage throughout inland waters of Southeast Alaska. Between 1991 and 1993, line-transect methodology was used to: 1) obtain population estimates of both harbor porpoise and Dalls porpoise, 2) establish a baseline for detecting trends in porpoise abundance, and 3) define porpoise distributional patterns and seasonality. Three line-transect surveys were carried out each year spanning spring, summer, and fall. To update abundance and trends for both harbor porpoise and Dalls porpoise, NMML once again initiated line-transect surveys in 2006 (spring and summer), 2007 (spring, summer and fall), 2010 (summer and fall), 2011 (summer and fall), and 2012 (summer) using methods comparable to those used in the early 1990s. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "https://accession.nodc.noaa.gov/0140931",
"mediaType": "placeholder/value",
"description": "csv files with effort and sighting data.",
"downloadURL": "https://accession.nodc.noaa.gov/0140931",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "NOAA Data Management Plan (DMP)",
"mediaType": "placeholder/value",
"description": "NOAA Data Management Plan for this record on InPort.",
"downloadURL": "https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/17370.pdf",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "GCMD Keyword Forum Page",
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"description": "Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords",
"downloadURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "Full Metadata Record",
"mediaType": "placeholder/value",
"description": "View the complete metadata record on InPort for more information about this dataset.",
"downloadURL": "https://www.fisheries.noaa.gov/inport/item/17370",
"describedByType": "application/octet-steam"
}
]
|
| identifier | gov.noaa.nmfs.inport:17370 |
| issued | 2015-01-01T00:00:00.000+00:00 |
| keyword |
[
"abundance",
"distribution",
"line-transect survey",
"seaonal occurrence",
"trends",
"fall",
"spring",
"summer",
"Southeast Alaska",
"DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce",
"Cetacean Assessment and Ecology Program"
]
|
| landingPage | https://www.fisheries.noaa.gov/inport/item/17370 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2015-01-01T00:00:00.000+00:00 |
| publisher |
{
"name": "Alaska Fisheries Science Center",
"@type": "org:Organization"
}
|
| references |
[
"https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/17370.pdf"
]
|
| rights | otherRestrictions, unclassified |
| spatial | -130.0,54.0,-137.0,60.0 |
| title | AFSC/NMML: Southeast Alaska Cetacean Vessel Surveys, 1991 - 2012 |
