Winter/Spring Habitat-based Density Models for Three Cetacean Species off Southern California
We used a well-established Generalized Additive Modeling framework to develop cetacean SDMs based on 20 California Cooperative Oceanic Fisheries Investigations (CalCOFI) shipboard surveys conducted during winter and spring between 2005 and 2015. Models were fit for short-beaked common dolphin (Delphinus delphis delphis), Dall’s porpoise (Phocoenoides dalli), and humpback whale (Megaptera novaeangliae). Model performance was evaluated based on a variety of established metrics, including the percentage of explained deviance, ratios of observed to predicted density, and visual inspection of predicted and observed distributions. Final models were used to produce spatial grids of average species density and spatially-explicit measures of uncertainty. Results provide the first fine scale (10 km) density predictions for these species during the cool seasons and reveal distribution patterns that are markedly different from summer/fall, thus providing novel insights into species ecology and quantitative data for the seasonal assessment of potential anthropogenic impacts.
Resources
3 resources available
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https://cetsound.noaa.gov/packages/swfsc_CalCOFI_WinterSpring_Becker_et_al_2017.zip
ZIP -
GCMD Keyword Forum Page
TEXT/HTML -
Full Metadata Record
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| contactPoint |
{ "fn": "Forney, Karin A", "@type": "vcard:Contact", "hasEmail": "mailto:karin.forney@noaa.gov" } |
| describedByType | application/octet-steam |
| description | We used a well-established Generalized Additive Modeling framework to develop cetacean SDMs based on 20 California Cooperative Oceanic Fisheries Investigations (CalCOFI) shipboard surveys conducted during winter and spring between 2005 and 2015. Models were fit for short-beaked common dolphin (Delphinus delphis delphis), Dall’s porpoise (Phocoenoides dalli), and humpback whale (Megaptera novaeangliae). Model performance was evaluated based on a variety of established metrics, including the percentage of explained deviance, ratios of observed to predicted density, and visual inspection of predicted and observed distributions. Final models were used to produce spatial grids of average species density and spatially-explicit measures of uncertainty. Results provide the first fine scale (10 km) density predictions for these species during the cool seasons and reveal distribution patterns that are markedly different from summer/fall, thus providing novel insights into species ecology and quantitative data for the seasonal assessment of potential anthropogenic impacts. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "https://cetsound.noaa.gov/packages/swfsc_CalCOFI_WinterSpring_Becker_et_al_2017.zip", "format": "ZIP", "mediaType": "application/zip", "description": "Data access URL", "downloadURL": "https://cetsound.noaa.gov/packages/swfsc_CalCOFI_WinterSpring_Becker_et_al_2017.zip", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "GCMD Keyword Forum Page", "accessURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords", "mediaType": "text/html", "description": "Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. 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", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "Full Metadata Record", "accessURL": "https://www.fisheries.noaa.gov/inport/item/56126", "mediaType": "text/html", "description": "View the complete metadata record on InPort for more information about this dataset.", "describedByType": "application/octet-stream" } ] |
| identifier | https://data.noaa.gov/waf/NOAA/nmfs/ost/iso/xml/56126.xml |
| issued | 2018-01-08T00:00:00.000+00:00 |
| keyword |
[ "Dall's porpoise", "Delphinus delphis delphis", "Megaptera novaeangliae", "Phocoenoides dalli", "cetacean", "density", "distribution", "humpback whale", "short-beaked common dolphin", "California", "Eastern Pacific Ocean", "Southern California Bight", "DOC/NOAA/NMFS/OST > Office of Science & Technology, National Marine Fisheries Service, NOAA, U.S. Department of Commerce", "NOAA Cetaceans and Sound Project (CetSound)" ] |
| landingPage | https://www.fisheries.noaa.gov/inport/item/56126 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2018-01-08T00:00:00.000+00:00 |
| publisher |
{ "name": "NMFS Office of Science and Technology", "@type": "org:Organization" } |
| spatial | -115.95044115723,27.46897906953,-179.9999999999,43.00001933323 |
| temporal | 2005-01-01T00:00:00+00:00/2005-04-30T00:00:00+00:00 |
| theme |
[ "geospatial" ] |
| title | Winter/Spring Habitat-based Density Models for Three Cetacean Species off Southern California |
