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    • Winter/Spring Habitat-based Density Models for Three Cetacean Species off Southern California

    Metadata Updated: March 1, 2024

    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.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Date February 29, 2024
    Metadata Created Date November 12, 2020
    Metadata Updated Date March 1, 2024
    Reference Date(s) January 8, 2018 (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NMFS OST

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Date February 29, 2024
    Metadata Created Date November 12, 2020
    Metadata Updated Date March 1, 2024
    Reference Date(s) January 8, 2018 (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:56126
    Access Constraints Cite As: NMFS Office of Science and Technology, [Date of Access]: Winter/Spring Habitat-based Density Models for Three Cetacean Species off Southern California [Data Date Range], https://www.fisheries.noaa.gov/inport/item/56126., Use Constraints: *** No Warranty*** The user assumes the entire risk related to its use of these data. NMFS is providing these data "as is," and NMFS disclaims any and all warranties, whether express or implied, including (without limitation) any implied warranties of merchantability or fitness for a particular purpose. No warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data to evaluate dataset limitations, restrictions or intended use. In no event will NMFS be liable to you or to any third party for any direct, indirect, incidental, consequential, special or exemplary damages or lost profit resulting from any use or misuse of this data.
    Bbox East Long -115.95044115723
    Bbox North Lat 43.00001933323
    Bbox South Lat 27.46897906953
    Bbox West Long -179.9999999999
    Coupled Resource
    Frequency Of Update asNeeded
    Harvest Object Id af2fdbf7-a062-4d63-8a49-30d33ccd664d
    Harvest Source Id f9290d59-efab-4b58-a20f-a0e82126966c
    Harvest Source Title NMFS OST
    Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-179.9999999999, 27.46897906953], [-115.95044115723, 27.46897906953], [-115.95044115723, 43.00001933323], [-179.9999999999, 43.00001933323], [-179.9999999999, 27.46897906953]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2005-01-01T00:00:00Z
    Temporal Extent End 2005-04-30T00:00:00Z

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