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Short Citation:
NMFS Office of Science and Technology, 2022: Winter/Spring Habitat-based Density Models for Three Cetacean Species off Southern California, https://www.fisheries.noaa.gov/inport/item/56126.

Item Identification

Title: Winter/Spring Habitat-based Density Models for Three Cetacean Species off Southern California
Status: Completed
Publication Date: 2018-01-08
Abstract:

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.

Purpose:

These models have been used by the Navy and others to assess potential impacts on cetaceans in compliance with U.S. regulations such as the Endangered Species Act and Marine Mammal Protection Act, which require species-specific assessments of the number of animals potentially affected by their activities.

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
ISO 19115 Topic Category biota
ISO 19115 Topic Category environment
ISO 19115 Topic Category oceans
None cetacean
None Dall's porpoise
None Delphinus delphis delphis
None density
None distribution
None humpback whale
None Megaptera novaeangliae
None Phocoenoides dalli
None short-beaked common dolphin

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
None California
None Eastern Pacific Ocean
None Southern California Bight

Physical Location

City: Moss Landing
State/Province: CA

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Data Presentation Form: Map (digital)
Data Set Credit: CREDIT: Elizabeth A. Becker, Karin A. Forney, Bruce J. Thayre, Amanda J. Debich, Gregory S. Campbell, Katherine Whitaker, Annie B. Douglas, Anita Gilles, Ryan Hoopes, and John A. Hildebrand. Frontiers in Marine Science, 4:121. doi:10.3389/fmars.2017.00121 ORIGINATORS: Southwest Fisheries Science Center;

Support Roles

Data Steward

CC ID: 839094
Date Effective From: 2018-06
Date Effective To:
Contact (Person): Haverland, Timothy J
Address: 1315 East West Hwy
Silver Spring, MD 20910-3282
USA
Email Address: tim.haverland@noaa.gov
Phone: 301-427-8137
Fax: 301-713-4137

Distributor

CC ID: 839095
Date Effective From: 2018-06
Date Effective To:
Contact (Organization): NMFS Office of Science and Technology (OST)
Address: 1315 East West Highway
Silver Spring, MD 20910
USA
Phone: 301-427-8100
URL: http://www.st.nmfs.noaa.gov/
Business Hours: 0700 - 1800 EST/EDT

Metadata Contact

CC ID: 839097
Date Effective From: 2018-06
Date Effective To:
Contact (Person): Haverland, Timothy J
Address: 1315 East West Hwy
Silver Spring, MD 20910-3282
USA
Email Address: tim.haverland@noaa.gov
Phone: 301-427-8137
Fax: 301-713-4137

Point of Contact

CC ID: 839096
Date Effective From: 2018-06
Date Effective To:
Contact (Person): Forney, Karin A
Address: 7544 Sandholdt Rd
Moss Landing, CA 95039
USA
Email Address: karin.forney@noaa.gov
Phone: 831-771-4155
Fax: (858) 546-7003
Business Hours: M-F 8:00 - 16:30

Extents

Currentness Reference: Publication Date

Extent Group 1

Extent Description:

January-April 2005-2015

Extent Group 1 / Geographic Area 1

CC ID: 839118
W° Bound: -179.9999999999
E° Bound: -115.95044115723
N° Bound: 43.00001933323
S° Bound: 27.46897906953

Extent Group 1 / Geographic Area 2

CC ID: 839119
W° Bound: -125.055684
E° Bound: -117.122588
N° Bound: 38.065782
S° Bound: 30.070776

Extent Group 1 / Time Frame 1

CC ID: 839107
Time Frame Type: Range
Start: 2005-01-01 00:00:00+0000
End: 2005-04-30 00:00:00+0000

Extent Group 1 / Time Frame 2

CC ID: 839108
Time Frame Type: Range
Start: 2006-01-01 00:00:00+0000
End: 2006-04-30 00:00:00+0000

Extent Group 1 / Time Frame 3

CC ID: 839109
Time Frame Type: Range
Start: 2007-01-01 00:00:00+0000
End: 2007-04-30 00:00:00+0000

Extent Group 1 / Time Frame 4

CC ID: 839110
Time Frame Type: Range
Start: 2008-01-01 00:00:00+0000
End: 2008-04-30 00:00:00+0000

Extent Group 1 / Time Frame 5

CC ID: 839111
Time Frame Type: Range
Start: 2009-01-01 00:00:00+0000
End: 2009-04-30 00:00:00+0000

Extent Group 1 / Time Frame 6

CC ID: 839112
Time Frame Type: Range
Start: 2010-01-01 00:00:00+0000
End: 2010-04-30 00:00:00+0000

Extent Group 1 / Time Frame 7

CC ID: 839113
Time Frame Type: Range
Start: 2011-01-01 00:00:00+0000
End: 2011-04-30 00:00:00+0000

Extent Group 1 / Time Frame 8

CC ID: 839114
Time Frame Type: Range
Start: 2012-01-01 00:00:00+0000
End: 2012-04-30 00:00:00+0000

Extent Group 1 / Time Frame 9

CC ID: 839115
Time Frame Type: Range
Start: 2013-01-01 00:00:00+0000
End: 2013-04-30 00:00:00+0000

Extent Group 1 / Time Frame 10

CC ID: 839116
Time Frame Type: Range
Start: 2014-01-01 00:00:00+0000
End: 2014-04-30 00:00:00+0000

Extent Group 1 / Time Frame 11

CC ID: 839117
Time Frame Type: Range
Start: 2015-01-01 00:00:00+0000
End: 2015-04-30 00:00:00+0000

Access Information

Security Class: Unclassified
Data 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.

Distribution Information

Distribution 1

CC ID: 839098
Download URL: https://cetsound.noaa.gov/packages/swfsc_CalCOFI_WinterSpring_Becker_et_al_2017.zip
Distributor: NMFS Office of Science and Technology (OST) (2018-06 - Present)
Description:

Data access URL

File Type: Shapefile
Compression: zip

URLs

URL 1

CC ID: 839105
URL: https://cetsound.noaa.gov
Name: Citation URL
URL Type:
Online Resource
File Resource Format: Information
Description:

Online Resource

Technical Environment

Description:

Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270

Data Quality

Completeness Measure:

All grid cells have density/CV values.

Lineage

Sources

CalCOFI 10x10km grid

CC ID: 839099
Source Contribution:

CalCOFI 10x10km grid

Process Steps

Process Step 1

CC ID: 839100
Description:

The NMSDD compliant grid layer, which required each cell to be 10² km, was produced using the ArcGIS Fishnet tool. The grid data layer was generated using the World Plate Carree projection so that each grid cell would line up with the points generated from any HBDM output. The gridded data layer was created to cover the entire study area. All fields required for the NMSDD were added.

Process Date/Time: 2015-05-01 00:00:00
Process Contact: Southwest Fisheries Science Center (SWFSC)
Phone (Voice): (858)546-7000

Process Step 2

CC ID: 839101
Description:

The following fields were populated using ArcGIS ModelBuilder with inputs provided by subject matter experts (SME): SPECIES, SPECIES_2,STUDY, STRATUM, MODEL_TYPE, SEASON, AREA_SQKM, ABUNDANCE.

The AREA_SQKM field was populated by calculating square kilometers using the ArcGIS geometry calculator.Areas were calculated using the World Cylindrical Equal Area projection.

The ABUNDANCE field was populated by running a field calculation that multiplied the DENSITY and AREA_SQKM fields.

Process Date/Time: 2015-05-15 00:00:00
Process Contact: Southwest Fisheries Science Center (SWFSC)
Phone (Voice): (858)546-7000

Process Step 3

CC ID: 839102
Description:

Habitat-based Density Model Data:

Original data in csv format produced from habitat-based density models (HBDM) were converted to a point shapefile using ArcGIS.

A spatial join between the points generated from the HBDM csv output and the NMSDD grid data was created in ArcGIS in order to populate the appropriate NMSDD attribute fieds with the HBDM information.

The following fields were calculated from the HBDM information: DENSITY, UNCERTAINTY, AREA_SQKM2, ABUNDANCE2.

The UNCERTAINTY field represents the coefficient of variation (CV) value.

The AREA_SQKM2 and ABUNDANCE2 fields are for Navy internal purposes only and are used to compare the HBDM and NMSDD grid areas since there could be slight variations due to spatial projections.

Process Date/Time: 2015-05-20 00:00:00
Process Contact: Southwest Fisheries Science Center (SWFSC)
Phone (Voice): (858)546-7000

Process Step 4

CC ID: 839103
Description:

Data Layer was projected to the WGS84 Global Coordinate System (GCS).

Data geometry was validated by running ArcGIS topology checks and the check/repair geometry tool.

Attribute values were validated by running a python script to ensure all fields were correctly populated.

Process Date/Time: 2015-05-31 00:00:00
Process Contact: Southwest Fisheries Science Center (SWFSC)
Phone (Voice): (858)546-7000

Process Step 5

CC ID: 839104
Description:

For distributing data to the public via the CetSound project, we performed the following:

- Made a single shapefile for each species, instead of separate shapefiles for winter and spring

- Calculated STUDY column to "Becker, et al. 2017"

- Calculated SEASON column to "Winter/Spring". While this does not meet Navy standards (Fall, Winter, Spring, Summer), we felt it was important to note the extended season that the data apply to because we are using a single shapefile.

- Removed Navy-specific fields AREA_SQKM2 and ABUNDANCE2

- Removed Shape_Area and Shape_Leng fields

- Updated metadata with input from SME

Process Date/Time: 2019-04-16 00:00:00
Process Contact: NMFS Office of Science and Technology (OST)
Phone (Voice): 301-427-8100

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity Shapefile Data Attributes for All Species

Catalog Details

Catalog Item ID: 56126
GUID: gov.noaa.nmfs.inport:56126
Metadata Record Created By: Timothy J Haverland
Metadata Record Created: 2019-04-25 12:25+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2019-09-20 12:16+0000
Metadata Record Published: 2019-05-10
Owner Org: OST
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Review Frequency: 1 Year