Predictive Models of Cetacean Densities in the California Current Ecosystem, 2020
NMFS Office of Science and Technology
Data Set
(DS)
| ID: 63298
| Published / External
Created: 2020-12-10
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Last Modified: 2023-10-17
Project (PRJ) | ID: 12695
ID: 63298
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | Predictive Models of Cetacean Densities in the California Current Ecosystem, 2020 |
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Short Name | |
* Status | Completed |
Creation Date | |
Revision Date | |
• Publication Date | 2020-05-11 |
* » Abstract |
Species distribution models (SDMs) are important management tools for highly mobile marine species because they provide spatially and temporally explicit information on animal distribution. Two prevalent modeling frameworks used to develop SDMs for marine species are Generalized Additive Models (GAMs) and Boosted Regression Trees (BRTs), but comparative studies have rarely been conducted; most rely on presence-only data; and few have explored how features such as species distribution characteristics affect model performance. Since the majority of marine species BRTs have been used to predict habitat suitability, we first compared BRTs to GAMs that used presence/absence as the response variable. We then compared results from these habitat suitability models to GAMs that predict species density (animals km-2) because density models built with a subset of the data used here have previously received extensive validation. We compared both the explanatory power (i.e., model goodness-of-fit) and predictive power (i.e., performance on a novel dataset) of the GAMs and BRTs for a taxonomically diverse suite of cetacean species using a robust set of systematic survey data (1991-2014) within the California Current Ecosystem. Both BRTs and GAMs were successful at describing overall distribution patterns throughout the study area for the majority of species considered, but when predicting on novel data, the density GAMs exhibited substantially greater predictive power than both the presence/absence GAMs and BRTs, likely due to both the different response variables and fitting algorithms. Our results provide an improved understanding of some of the strengths and limitations of models developed using these two methods. These results can be used by modelers developing SDMs and resource managers tasked with the spatial management of marine species to determine the best modeling technique for their question of interest. |
* 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. |
Notes | |
Other Citation Details | |
• Supplemental Information | |
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Keywords
Theme Keywords
Thesaurus | Keyword |
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ISO 19115 Topic Category | biota |
ISO 19115 Topic Category | oceans |
None | Balaenoptera musculus |
None | Balaenoptera physalus |
None | Berardius bairdii |
None | California Current Ecosystem |
None | cetacean |
None | Delphinus delphis bairdii |
None | Delphinus delphis delphis |
None | density |
None | distribution |
None | Grampus griseus |
None | Lagenorhynchus obliquidens |
None | Lissodelphis borealis |
None | Megaptera novaeangliae |
None | Phocoenoides dalli |
None | Physeter macrocephalus |
None | small beaked whales |
None | Stenella coeruleoalba |
None | Tursiops truncatus |
Temporal Keywords
Thesaurus | Keyword |
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* Spatial Keywords
Thesaurus | Keyword |
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None | California |
None | Eastern Pacific Ocean |
None | Oregon |
None | Washington |
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Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | |
• Maintenance Frequency | Irregular |
Maintenance Note | |
» Data Presentation Form | Map (digital) |
• Entity Attribute Overview | |
Entity Attribute Detail Citation | |
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Distribution Liability | |
Data Set Credit | CREDIT: Becker, E.A., J.V. Carretta, K.A. Forney, J. Barlow, S. Brodie, R. Hoopes, M.G. Jacox, S.M. Maxwell, J.V. Redfern, N.B. Sisson, H. Welch, E.L. Hazen. 2020. Performance evaluation of cetacean species distribution models developed using generalized additive models and boosted regression trees. Ecology and Evolution, 10, 5759-5784. For Blue_whale_winter_spring: Hazen, E. L., Palacios, D. M., Forney, K. A., Howell, E. A., Becker, E., Hoover, A. L., … Bailey, H. (2017). WhaleWatch: A dynamic management tool for predicting blue whale density in the California Current. Journal of Applied Ecology, 54(5), 1415–1428. https://doi.org/10.1111/1365‐2664.12820 For Humpback_whale_winter_spring and Fin_whale_winter_spring: U.S. Department of the Navy. (2019). U.S. Navy Marine Species Density Database Phase III for the Northwest Training and Testing Study Area. NAVFAC Pacific Technical Report. Naval Facilities Engineering Command Pacific, Pearl Harbor, HI. 262 pp. ORIGINATORS: Southwest Fisheries Science Center; |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2018-06 |
Date Effective To | |
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 |
Mobile | |
URL | |
Business Hours | |
Contact Instructions |
* » Support Role | Distributor |
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* » Date Effective From | 2018-06 |
Date Effective To | |
Organization | NMFS Office of Science and Technology (OST) |
Address |
1315 East West Highway Silver Spring, MD 20910 USA |
Email Address | |
Phone | 301-427-8100 |
Fax | |
Mobile | |
URL | http://www.st.nmfs.noaa.gov/ |
Business Hours | 0700 - 1800 EST/EDT |
Contact Instructions |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2018-06 |
Date Effective To | |
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 |
Mobile | |
URL | |
Business Hours | |
Contact Instructions |
* » Support Role | Point of Contact |
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* » Date Effective From | 2018-06 |
Date Effective To | |
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 |
Mobile | |
URL | |
Business Hours | M-F 8:00 - 16:30 |
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Extents
Currentness Reference | Publication Date |
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Extent Group 1
Extent Description |
California, Oregon, Washington, Eastern Pacific Ocean |
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Extent Group 1 / Geographic Area 1
* » W° Bound | -131 |
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* » E° Bound | -117.097556 |
* » N° Bound | 48.5061 |
* » S° Bound | 30.05 |
* » Description |
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* » Time Frame Type | Range |
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* » Start | 1991-07-01 00:00:00+0000 |
End | 1991-11-30 00:00:00+0000 |
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* » Time Frame Type | Range |
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* » Start | 1993-07-01 00:00:00+0000 |
End | 1993-11-30 00:00:00+0000 |
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* » Time Frame Type | Range |
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* » Start | 1996-07-01 00:00:00+0000 |
End | 1996-11-30 00:00:00+0000 |
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* » Time Frame Type | Range |
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* » Start | 2001-07-01 00:00:00+0000 |
End | 2001-11-30 00:00:00+0000 |
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* » Time Frame Type | Range |
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* » Start | 2005-07-01 00:00:00+0000 |
End | 2005-11-30 00:00:00+0000 |
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* » Time Frame Type | Range |
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* » Start | 2008-07-01 00:00:00+0000 |
End | 2008-11-30 00:00:00+0000 |
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* » Time Frame Type | Range |
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* » Start | 2009-07-01 00:00:00+0000 |
End | 2009-11-30 00:00:00+0000 |
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* » Time Frame Type | Range |
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* » Start | 2014-07-01 00:00:00+0000 |
End | 2014-11-30 00:00:00+0000 |
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Spatial Information
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EPSG Code | EPSG:4326 | ||||||||||||||||||||||||||||
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* » Security Class | Unclassified |
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• » Data Access Constraints | |
• 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 these data. |
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Distribution Information
Start Date | |
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» Download URL | https://noaa.maps.arcgis.com/home/item.html?id=96ae05c033a540bf83e0f6c00a25cf5a |
Distributor | NMFS Office of Science and Technology (OST) (2018-06 - Present) |
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File Type (Deprecated) | File Geodatabase Feature Class |
Distribution Format | ESRI File Geodatabase |
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Technical Environment
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Microsoft Windows 10 Version 10.0 (Build 18363) ; Esri ArcGIS 12.6.3.24783 |
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Completeness Report |
The entire study area was divided into approximately 7x10km cells (around 0.1° unprojected), and density, area, and abundance calculated for each. |
Conceptual Consistency |
No measure of horizontal quality was performed. |
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Data Management
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» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed |
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» If To Be Determined, Unable to Archive, or No Archiving Intended, Explain |
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Process Step Number | 1 |
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Outputs from models were assigned to cells in the study area. |
Process Date/Time | 2020-05-11 00:00:00 |
Process Contact | Southwest Fisheries Science Center (SWFSC) |
Phone (Voice) | (858)546-7000 |
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Child Items
Rubric scores updated every 15m
Score | Type | Title |
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Entity (ENT) | Attributes for all species | |
Related Items
Item Type | Relationship Type | Title |
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Catalog Details
Catalog Item ID | 63298 |
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Metadata Record Created By | Timothy J Haverland |
Metadata Record Created | 2020-12-10 22:07+0000 |
Metadata Record Last Modified By | SysAdmin InPortAdmin |
» Metadata Record Last Modified | 2023-10-17 16:12+0000 |
Metadata Record Published | 2020-12-22 |
Owner Org | OST |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2020-12-22 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2021-12-22 |
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