Halibut PreMPA - Commercial Fishery - Central Region [ds1074]

SDE Raster Dataset

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Tags
halibut, Marine Protected Area (MPA), fishing, socioeconomic, baseline monitoring, Marine Life Protection Act (MLPA), monitoring, biota, location, California Central Coast, California


Summary

The primary goal of this project was to collect up-to-date information on historical trends, current socioeconomic conditions, and the spatial distribution and economic value of key commercial fisheries and the commercial passenger fishing vessel fleet in the Central Coast Region.

Description

This data set is a part of Ecotrust's project entitled: Establishing a Baseline and Assessing Spatial and Socioeconomic Change in the California Central Coast Commercial and CPFV Fisheries. This project is a component of the California Central Coast Marine Protected Area Baseline Monitoring Project that is designed to characterize the ecological and socioeconomic conditions and changes within the Central Coast Region since MPA implementation. The Central Coast study region extends from the north at Pigeon Point to the south at Point Conception. This data set consists of data collected to inform the California Marine Life Protection Act (MLPA) planning process in the summer of 2005 from fisheries mapping interviews with commercial fishermen who had California halibut--hook and line landings in the California Central Coast between 2003 and 2004. Results from the interviews were then combined through an aggregation process where the value each fisherman gives to their California halibut fishing grounds are weighted by their average annual landings for California halibut from 2000 to 2004. This data set represents the average spatial extent and relative value of California halibut commercial fishing grounds for the Central Coast Region in the years 2000 to 2004.

Credits

Use limitations

Contact Ecotrust about using this data.

Extent

West -123.564094 East -120.375973
North 37.328461 South 33.860526

Scale Range
Maximum (zoomed in) 1:5,000
Minimum (zoomed out) 1:150,000,000

ArcGIS Metadata

Topics and Keywords

Content type Downloadable Data
Export to FGDC CSDGM XML format as Resource Description No

Place keywords California Central Coast, California

Theme keywords Marine Protected Area (MPA), Marine Life Protection Act (MLPA), fishing, socioeconomic, baseline monitoring, monitoring, halibut

Theme keywords biota, location

Thesaurus
Title ISO 19115 Topic Category




Citation

Title Halibut PreMPA - Commercial Fishery - Central Region [ds1074]
Publication date 2012-07-3000:00:00
Indeterminate date unknown


Presentation formats * digital table


Citation Contacts

Responsible party
Organization's name Ecotrust
Contact's role originator


Responsible party
Individual's name Charles Steinback
Organization's name Ecotrust
Contact's position Director, Marine Spatial Planning
Contact's role point of contact


Contact information
Phone
Voice (503) 467-0777

Address
Type both
Delivery point Ste. 200
Delivery point 721 NW 9th Ave.
City Portland
Administrative area OR
Postal code 97209
Country US
e-mail address charles@ecotrust.org



Resource Details

Dataset languages English(UNITED STATES)
Dataset character set utf8 - 8 bit UCS Transfer Format


Status completed
Spatial representation type * grid


* Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.1.3497


ArcGIS item properties
* Name Halibut PreMPA - Commercial Fishery - Central Region [ds1074]
* Location Server=; :; Database=; User=; Version=
* Access protocol ArcSDE Connection

Extents

Extent
Description
ground condition
Temporal extent
Date and time 2012-01-01

Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -123.564094
* East longitude -120.375973
* North latitude 37.328461
* South latitude 33.860526
* Extent contains the resource Yes

Extent in the item's coordinate system
* West longitude -13755092.008811
* East longitude -13400192.008811
* South latitude 4010089.392301
* North latitude 4484989.392301
* Extent contains the resource Yes

Resource Maintenance

Resource maintenance
Update frequency as needed


Resource Constraints

Constraints
Limitations of use

Contact Ecotrust about using this data.


Spatial Reference

ArcGIS coordinate system
* Type Projected
* Geographic coordinate reference GCS_WGS_1984
* Projection WGS_1984_Web_Mercator_Auxiliary_Sphere
* Coordinate reference details
Projected coordinate system
Well-known identifier 102100
X origin -20037700
Y origin -30241100
XY scale 148923141.92838538
Z origin -100000
Z scale 10000
M origin -100000
M scale 10000
XY tolerance 0.001
Z tolerance 0.00020000000000000001
M tolerance 0.00020000000000000001
High precision true
Latest well-known identifier 3857
Well-known text PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3857]]

Reference system identifier
* Value 3857
* Codespace EPSG
* Version 8.2.6


Spatial Data Properties

ArcGIS Raster Properties
General Information
* Pixel depth 32
* Compression type None
* Number of bands 1
* Raster format AIG
* Source type continuous
* Pixel type floating point
* No data value -3.4028235e+038
* Has colormap No
* Has pyramids Yes




Data Quality

Scope of quality information
Resource level dataset




Data quality report - Quantitative attribute accuracy
Measure description
Data was derived from interviews with fishermen and each fisherman gave boundaries to their fishing grounds and the value attributed to those grounds. Not all fishermen have the same method for describing their fishing areas, so there is variability in the results. Some fishermen would give very detailed areas and other fishermen would give less detailed areas.




Data quality report - Absolute external positional accuracy
Dimension horizontal


Measure description
All data is overlaid on NOAA nautical charts, with all layers sharing the same projection.




Lineage

Process step
Description
Ecotrust staff edits the fishing ground data to the specific area(s) that the fisherman described, using north and south boundaries, depth ranges, or other geographic details.




Process step
Description
Ecotrust staff interviews individual fishermen, collecting data on their fishing grounds, fishing history, and value of fishing grounds.




Process step
Description
For each fisherman in a particular fishery, these raster grids are added one on top of another and the total value of each cell is calculated, resulting in a combined raster dataset, showing the value of a particular fishery for all participating fishermen using the values they placed on their grounds and their landings.




Process step
Description
Data are combined through a calculation where the value of a fisherman's particular fishing ground (number of pennies out of 100) is combined with their landings for that fishery and divided by the area of that particular fishing ground.




Process step
Description
Each fisherman's grounds are converted from a vector to a raster using the value determined in the previous step, with the result being a dollar value for each raster grid cell.




Process step
Description
Commercial fishery datasets are created for each of the fishery/port combinations that had 3 or more fishermen participate in the interview process.




Process step
Description
Quality control to check that penny value equals 100 for each fishery that the fisherman participates in and that the fishery shapes are correct.




Process step
Description
The cell values in the combined raster are multiplied by 100,000 to give each cell a relative value that is easier to interpret.




Process step
Description
A kernel density is used to smooth the boundaries between individual shapes in the combined raster for confidentiality and a map product that is easier to interpret.




Distribution

Distribution format
* Name SDE Raster Dataset


Transfer options
Online source
Location http://bios.dfg.ca.gov/
Function performed information

Online source
Location http://oceanspaces.org/data/assessing-spatial-and-socioeconomic-change-central-coast-commercial-and-cpfv-fisheries-final
Description Reports
Function performed information

Online source
Location http://oceanspaces.org/data/rocky-habitat-analysis-spatial-change-analysis-spatial-data-sets-available-and-recommendations
Description Download
Function performed download

Online source
Location ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/1000_1099/ds1074.zip
Description Download
Function performed download

Fields

Details for object Value
Definition
Relative value of California halibut commercial fishing grounds for the Central Coast Region in the years 2000 to 2004


Metadata Details

Metadata language English(UNITED STATES)
Metadata character set utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata dataset
Scope name * dataset


* Last update 2015-01-09


ArcGIS metadata properties
Metadata format ArcGIS1.0
Metadata style FGDC CSDGM Metadata
Standard or profile used to edit metadata FGDC


Created in ArcGIS for the item 2014-12-1117:01:30
Last modified in ArcGIS for the item 2015-01-0916:58:38


Automatic updates
Have been performed Yes
Last update 2015-01-0916:58:38

Item location history
Item copied or moved 2014-12-1117:01:30
From P:\WorkArea\HoldItems\Marine\MPA\Baseline_CC\OceanSpacesArchive\Ecotrust\Spatial Data Sets and Maps\Data\COM\COM_Pre_MPA\kdensity\chal_allk
To \\geodata.\\ds1000-1099\ds1074-\v1\v1_source\chal_allk


Metadata Contacts

Metadata contact
Individual's name Charles Steinback
Organization's name Ecotrust
Contact's position Director, Marine Spatial Planning
Contact's role point of contact


Contact information
Phone
Voice (503) 467-0777

Address
Type both
Delivery point Ste. 200
Delivery point 721 NW 9th Ave.
City Portland
Administrative area OR
Postal code 97209
Country US
e-mail address charles@ecotrust.org



Metadata Maintenance

Maintenance
Update frequency not planned


Thumbnail and Enclosures

Enclosure
Enclosure type File
Description of enclosure original metadata
Original metadata document, which was translated yes
Source metadata format fgdc