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Predictive Models of Cetacean Densities in the Hawaiian Islands EEZ, 2020

Metadata Updated: March 1, 2024

To develop improved and updated species distribution models (SDMs) and to update cetacean stock abundance estimates for waters of the US Hawaiian EEZ, sighting data from the Hawaiian Islands Cetacean and Ecosystem Assessment Survey (HICEAS) 2017 were combined with previous line-transect survey data collected within the study area to create a modeling database spanning the period from 2002 to 2017. The majority of these data were from the two previous HICEAS efforts, the first in 2002 and the second in 2010. In contrast to previous modeling efforts that included survey data from a broader region of the central Pacific Ocean, the current SDMs were built only with survey data collected within waters of the Hawaiian EEZ. Habitat models were developed to derive spatially-explicit estimates of species density specific to the Hawaiian EEZ based on previously established methods that allow for the incorporation of segment-specific estimates of detection probability. Potential habitat variables included bathymetric depth, distance to islands, and a suite of dynamic surface and subsurface outputs from an ocean circulation model. The habitat-based models of cetacean density developed in this study represent an improvement over previous models because they more accurately account for variation in detection probabilities, provide finer-scale density predictions (~9km x 9km grid resolution), and better account for uncertainty in the resulting study area abundance estimates. In addition, they include dynamic subsurface variables that were not available for the previous models. Further, increases in sample sizes allowed for the development of a new habitat model for Risso’s dolphin (Grampus griseus).

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.

Downloads & Resources

Dates

Metadata Date February 29, 2024
Metadata Created Date January 15, 2021
Metadata Updated Date March 1, 2024
Reference Date(s) August 6, 2020 (publication)
Frequency Of Update irregular

Metadata Source

Harvested from NMFS OST

Additional Metadata

Resource Type Dataset
Metadata Date February 29, 2024
Metadata Created Date January 15, 2021
Metadata Updated Date March 1, 2024
Reference Date(s) August 6, 2020 (publication)
Responsible Party (Point of Contact, Custodian)
Contact Email
Guid gov.noaa.nmfs.inport:63318
Access Constraints Cite As: NMFS Office of Science and Technology, [Date of Access]: Predictive Models of Cetacean Densities in the Hawaiian Islands EEZ, 2020 [Data Date Range], https://www.fisheries.noaa.gov/inport/item/63318., 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 these data.
Bbox East Long 180
Bbox North Lat 31.805643
Bbox South Lat 15.55512
Bbox West Long -180
Coupled Resource
Frequency Of Update irregular
Harvest Object Id ef8976ef-161b-4f18-89d3-306f75310797
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": [[[-180.0, 15.55512], [180.0, 15.55512], [180.0, 31.805643], [-180.0, 31.805643], [-180.0, 15.55512]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System EPSG::4326
Spatial Harvester True
Temporal Extent Begin 2002-07-01T00:00:00Z
Temporal Extent End 2002-12-31T00:00:00Z

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