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Short Citation:
National Centers for Coastal Ocean Science, 2022: Five-minute grid shapefile with marine bird density data off central California, CDAS data (1980-2001), https://www.fisheries.noaa.gov/inport/item/39255.

Item Identification

Title: Five-minute grid shapefile with marine bird density data off central California, CDAS data (1980-2001)
Short Name: birdsummary
Status: Completed
Publication Date: 2002
Abstract:

A shapefile of five minute grids that contains marine bird density data at-sea from the CDAS Central CA data set (1980-2001). It is a shapefile representing 5 minute x 5 minute latitude x longitude cells that house the densities (birds/sq.km.) of 40 species of marine birds during the Upwelling, Oceanic and Davidson Current Seasons. The number of marine birds seen in a cell was divided by the area sampled in the cell to estimate density. If a cell was surveyed more than once, densities were averaged and weighted according to effort. Cells that were surveyed but in which no birds were observed have densities of zero.

Purpose:

This shapefile was used to map bird density maps for NOAA from the CDAS data set.

Notes:

241

Supplemental Information:

The CDAS data set (1980-2001) was developed and is maintained by R.G. Ford Consulting Co. It is a combination/ synthesis of at-sea data sets off the U.S. west coast of CA,OR and WA. This shapefile was created as part of a biogeographic assessment of marine resources off northern and central California, for the National Oceanic and Atmospheric Administration's Ocean Service. For additional information, see the bird chapter of the Phase 2 report at http://ccma.nos.noaa.gov/ecosystems/sanctuaries/california/html/birds/. For additional information on the aerial survey data, see CD-ROM, Marine Mammal and Seabird Computer Database Analysis System, Washington, Oregon, and California (1975-1997). For additional ship-based survey data information, contact the following contributing researchers: SF-DODS Cruises (1996-2000) EPOCS Cruises (1984-1994) David G. Ainley, Ph.D. H.T. Harvey and Associates 3150 Almaden Expressway, Suite 145 San Jose, California 95118 dainley@sbcglobal.net Midwater Trawls for Juvenile Rockfish(1985-2001) David G. Ainley, Ph.D. (see above) and Carol Keiper, Ph.D. Oikonos P.O. Box 979 Bolinas, Calfornia 94924 carol@oikonos.org ORCAWALE Cruise (2001) Lisa T. Ballance, Ph.D. Ecosystem Studies Program Southwest Fisheries Science Center 8604 La Jolla Shores Drive La Jolla, California 92037 lisa.ballance@noaa.gov

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
ISO 19115 Topic Category biota
ISO 19115 Topic Category environment
ISO 19115 Topic Category oceans
NOS Data Explorer Topic Category Environmental Monitoring
None avifauna
None bird density at sea
None density
None marine bird
None marine bird density
None marine bird distribution
None seabird
None seabird density

Temporal Keywords

Thesaurus Keyword
UNCONTROLLED
None all seasons
None anytime
None Davidson Current Season
None ocean season
None oceanic season
None season
None seasonal
None upwelling season
None year-round

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
None central California coast
None Coastal ocean off central CA
None national marine sanctuaries
None NE Pacific
None ocean

Physical Location

Organization: National Centers for Coastal Ocean Science
City: Silver Spring
State/Province: MD

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Data Presentation Form: vector digital data
Entity Attribute Overview:

Thus file contains at-sea summary distributional data for seabirds off north/central CA, from 1980-2001. The data is summarized into 5-minute grids.

Entity Attribute Detail Citation:

For explanations of the attributes, please see the excel file on the Data DVD called DefinitionsofCDASBirdAcronyms.xls

Distribution Liability:

These data were prepared for an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data have been used by NOAA, no warranty, expressed or implied, is made by NOAA as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by NOAA in the use of these data or related materials.

Data Set Credit: This data set was compiled by R. G. Ford Consulting Company for the National Oceanic and Atmospheric Administration's National Ocean Service: National Centers for Coastal Ocean Science and National Marine Sanctuary Program. The following researchers contributed ship-based survey data for use in production of this shapefile: David G. Ainley, Ph.D., H. T. Harvey and Associates; Carol Keiper, Ph.D., Oikonos; Lisa T. Ballance, Ph. D., Ecosystem Studies Program, Southwest Fisheries Science Center, National Marine Fisheries Service. Aerial survey data used for production of this shapefile are available on CD-ROM, Marine Mammal and Seabird Computer Database Analysis System, Washington, Oregon, and California (1975-1997). See Source Information for additional citations of contributors to this data set.

Support Roles

Data Steward

CC ID: 462688
Date Effective From: 2002
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Distributor

CC ID: 462690
Date Effective From: 2002
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Metadata Contact

CC ID: 462691
Date Effective From: 2002
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Point of Contact

CC ID: 462689
Date Effective From: 2002
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Principal Investigator

CC ID: 462692
Date Effective From: 2002
Date Effective To:
Contact (Person): Gill, Tracy
Email Address: tracy.gill@noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 462695
W° Bound: -128.833328
E° Bound: -120.583336
N° Bound: 39.083332
S° Bound: 34.833333

Extent Group 1 / Time Frame 1

CC ID: 462694
Time Frame Type: Range
Start: 1980
End: 2001

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Vector Representation 1

CC ID: 584188
Complex Object Present?: Yes
Complex Object Count: 493

Access Information

Security Class: Unclassified
Data Access Procedure:

download from website;

Data Access Constraints:

This data set is in the public domain, and the recipient may not assert any proprietary rights thereto nor represent it to anyone as other than a data set compiled by R. G. Ford Consulting Company for the National Oceanic and Atmospheric Administration's National Ocean Service.

Data Use Constraints:

This data set is provided "as-is" without warranty of any kind. The user assumes all responsibility for the accuracy and suitability of this data set for a particular purpose.

Distribution Information

Distribution 1

CC ID: 462696
Download URL: http://ccma.nos.noaa.gov/ecosystems/sanctuaries/california/html/data/shapes/bird_shapes.zip
Distributor:
Description:

Downloadable Data

File Type: shapefile
File Size: 0.655

URLs

URL 2

CC ID: 462685
URL: http://ccma.nos.noaa.gov/ecosystems/sanctuaries/california/html/data/
URL Type:
Online Resource

URL 3

CC ID: 462686
URL: http://ccma.nos.noaa.gov/ecosystems/sanctuaries/california/html/data/pdfs/bird_DENS_SEAS.pdf
URL Type:
Browse Graphic
File Resource Format: PDF
Description:

At-sea, seasonal density maps of selected marine birds off central CA, 1980-2001, from CDAS Cent Ca data set (1980-2001).

Activity Log

Activity Log 1

CC ID: 462724
Activity Date/Time: 2014-03-19
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 462723
Activity Date/Time: 2017-04-05
Description:

Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 584186
Activity Date/Time: 2017-09-13
Description:

Partial upload of Spatial Info section only.

Activity Log 4

CC ID: 600898
Activity Date/Time: 2017-11-01
Description:

Replaced entire Lineage section to populate new Source Contribution field.

Technical Environment

Description:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.0.1324

Data Quality

Accuracy:

The at-sea density data, from which this shapefile was created, are the result of a synthesis of data from eight shipboard and aerial survey programs conducted in the study area in the years 1980-2001. Observation and trackline data from these studies were converted to a common format. All aerial data were continuous; ship-based data were converted separately into a continuous transect to the extent possible. From the digitized survey data, the distributions of effort and of marine bird species were mapped into 5 minute latitude x 5 minute longitude cells using CDAS, a custom geographic information system for analyzing marine bird and mammal surveys (MMS-CDAS 2001). The length and width of the survey trackline in a given cell (estimated trackline width varied by platform, depending on speed and height above water) were used to estimate the area sampled. The number of marine birds seen in a cell was then divided by the area sampled in the cell to estimate density. If a cell was censused more than once, densities were averaged, with adjustment made for effort. Although the at-sea data span the years 1980-2001, data are not available for all seasons in all years. For the Upwelling Season, data are from 1980-1982 and 1985-2001. For the Oceanic Season, data are from 1980-1982, 1991 and 1994-2001. For the Davidson Current Season, data are from 1980-1986 and 1991-2001. All data sources were thoroughly checked for accuracy, consistency and completeness. Accuracy analyses were not applicable to this data set and therefore not produced.

Completeness Report:

All shapefile cells have attribute information.

Conceptual Consistency:

All shapefile attributes were checked for consistency of appropriate range values.

Lineage

Sources

CDAS Central Calfornia Data Set

CC ID: 600899
Contact Name: R.G. Ford Consulting Co.
Publish Date: 2001-01-01
Extent Type: Range
Extent Start Date/Time: 1980
Extent End Date/Time: 2001
Source Contribution:

CDAS Central California data set (1980-2001), 2003. A GIS data set of marine birds at sea off the coast of central California; the CDAS data set was developed and is maintained by Glenn Ford and Janet Casey or R.G. Ford Consulting Co., Portland, Oregon. | Type of Source Media: online

Process Steps

Process Step 1

CC ID: 600900
Description:

The at-sea density data, from which this shapefile was created, are the result of a synthesis of data from eight shipboard and aerial survey programs conducted in the study area in the years 1980-2001. Observation and trackline data from these studies were converted to a common format. All aerial data were continuous; ship-based data were converted separately into a continuous transect to the extent possible. From the digitized survey data, the distributions of effort and of marine bird species were mapped into 5 minute x 5 minute latitude x longitude cells using CDAS, a custom geographic information system for analyzing marine bird and mammal surveys (MMS-CDAS 2001). The length and width of the survey trackline in a given cell (estimated trackline width varied by platform, depending on speed and height above water) were used to estimate the area sampled. The number of marine birds seen in a cell was then divided by the area sampled in the cell to estimate density. If a cell was censused more than once, densities were averaged, with adjustment made for effort. Although the at-sea data span the years 1980-2001, data are not available for all seasons in all years. For the Upwelling Season, data are from 1980-1982 and 1985-2001. For the Oceanic Season, data are from 1980-1982, 1991 and 1994-2001. For the Davidson Current Season, data are from 1980-1986 and 1991-2001. All data sources were thoroughly checked for accuracy, consistency and completeness. Accuracy analyses were not applicable to this data set and therefore not produced.

Process Date/Time: 2001-01-01 00:00:00
Source: CDAS Central Calfornia Data Set

Catalog Details

Catalog Item ID: 39255
GUID: gov.noaa.nmfs.inport:39255
Metadata Record Created By: Tyler Christensen
Metadata Record Created: 2017-04-05 12:51+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2017-11-09
Owner Org: NCCOS
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2017-11-09
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2018-11-09