Kelp distribution off California
Data Set (DS) | National Centers for Coastal Ocean Science (NCCOS)GUID: gov.noaa.nmfs.inport:39359 | Updated: October 17, 2023 | Published / External
Summary
Short Citation
National Centers for Coastal Ocean Science, 2024: Kelp distribution off California, https://www.fisheries.noaa.gov/inport/item/39359.
Full Citation Examples
This data set delineates kelp beds (Nereocystis leutkeana and Macrocystis spp.) along the Pacific Coast of California. Multiple years of kelp mapping data for the state have been compiled into a single coastwide data set. Due to variability in oceanographic and climatic conditions, kelp bed abundance and distribution is extremely variable from year to year. Therefore kelp bed locations and extent in a particular year may not reflect current or past conditions. In addition, the methods for mapping kelp in California have changed over time. Despite these caveats, this multi-year kelp coverage can be used to identify areas that have been known to support kelp growth, and investigate general patterns of kelp distribution on a coastwide scale.California has three coastal kelp surveys. The first survey, 1989, was a coastwide survey using the same contractor and method as Washington State. Kelp canopy data from the second survey, 1999, was created from digital image processing of scanned aerial photographs. The 2002 survey was performed with a Digital Multispectral Video (DMSV) sensor and kelp beds were delineated by digital image processing techniques.
Distribution Information
-
Shapefile, 81
Downloadable Data
None
None
Controlled Theme Keywords
BENTHIC, BROWN ALGAE, COMMUNITY STRUCTURE, DYNAMIC VEGETATION/ECOSYSTEM MODELS, ECOSYSTEM FUNCTIONS, environment, ENVIRONMENTAL ASSESSMENTS, oceans, PELAGIC, USE/FEEDING HABITATS
Child Items
Type | Title |
---|---|
Entity | kelp_ca |
Contact Information
Point of Contact
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
Metadata Contact
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
Extents
-124.397359° W,
-116.826846° E,
40.475111° N,
32.520358° S
1989 - 2002
Item Identification
Title: | Kelp distribution off California |
---|---|
Short Name: | kelp_ca.shp |
Status: | Completed |
Publication Date: | 2004 |
Abstract: |
This data set delineates kelp beds (Nereocystis leutkeana and Macrocystis spp.) along the Pacific Coast of California. Multiple years of kelp mapping data for the state have been compiled into a single coastwide data set. Due to variability in oceanographic and climatic conditions, kelp bed abundance and distribution is extremely variable from year to year. Therefore kelp bed locations and extent in a particular year may not reflect current or past conditions. In addition, the methods for mapping kelp in California have changed over time. Despite these caveats, this multi-year kelp coverage can be used to identify areas that have been known to support kelp growth, and investigate general patterns of kelp distribution on a coastwide scale.California has three coastal kelp surveys. The first survey, 1989, was a coastwide survey using the same contractor and method as Washington State. Kelp canopy data from the second survey, 1999, was created from digital image processing of scanned aerial photographs. The 2002 survey was performed with a Digital Multispectral Video (DMSV) sensor and kelp beds were delineated by digital image processing techniques. |
Purpose: |
These data were developed for Pacific States Marine Fisheries Commission in cooperation with the National Marine Fisheries Service Northwest Region and the Pacific Fishery Management Council in support of an Environmental Impact Statement (EIS) to consider the designation and conservation of Essential Fish Habitat (EFH) for Pacific Coast Groundfish. These data were consolidated and integrated in a GIS format to support spatially explicit groundfish habitat modelling and impacts assessment on a coastwide scale. |
Notes: |
281 |
Keywords
Theme Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MACROALGAE (SEAWEEDS) > BROWN ALGAE
|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > COMMUNITY STRUCTURE
|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS
|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > USE/FEEDING HABITATS
|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC
|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > PELAGIC
|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > HUMAN DIMENSIONS > ENVIRONMENTAL GOVERNANCE/MANAGEMENT > ENVIRONMENTAL ASSESSMENTS
|
Global Change Master Directory (GCMD) Service Keywords |
EARTH SCIENCE SERVICES > MODELS > DYNAMIC VEGETATION/ECOSYSTEM MODELS
|
ISO 19115 Topic Category |
environment
|
ISO 19115 Topic Category |
oceans
|
UNCONTROLLED | |
Global Change Master Directory (GCMD) Data Center Keywords | DOC/NOAA/NOS/NCCOS > National Centers for Coastal Ocean Science, National Ocean Service, NOAA, U.S. Department of Commerce |
NOS Data Explorer Topic Category | Environmental Monitoring |
None | coastal |
None | essential fish habitat (EFH) |
None | kelp |
None | Macrocysits |
None | marine plant |
None | Nereocystis |
Spatial Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CALIFORNIA
|
UNCONTROLLED | |
None | California |
None | Channel Islands National Marine Sanctuary |
None | Northwest Pacific 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 |
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Maintenance Frequency: | Unknown |
Data Presentation Form: | vector digital data |
Distribution Liability: |
Unknown |
Data Set Credit: | Cooperators and funders who contributed to development of these data, include Pacific States Marine Fisheries Commission, and National Marine Fisheries Service, Northwest Fisheries Science Center, Southwest Fisheries Science Center, Northwest Region, and Southwest Region. |
Support Roles
Data Steward
Date Effective From: | 2004 |
---|---|
Date Effective To: | |
Contact (Position): | NCCOS Scientific Data Coordinator |
Email Address: | NCCOS.data@noaa.gov |
Distributor
Date Effective From: | 2004 |
---|---|
Date Effective To: | |
Contact (Position): | NCCOS Scientific Data Coordinator |
Email Address: | NCCOS.data@noaa.gov |
Metadata Contact
Date Effective From: | 2004 |
---|---|
Date Effective To: | |
Contact (Position): | NCCOS Scientific Data Coordinator |
Email Address: | NCCOS.data@noaa.gov |
Point of Contact
Date Effective From: | 2004 |
---|---|
Date Effective To: | |
Contact (Position): | NCCOS Scientific Data Coordinator |
Email Address: | NCCOS.data@noaa.gov |
Principal Investigator
Date Effective From: | 2004 |
---|---|
Date Effective To: | |
Contact (Person): | Clark, Randy |
Address: |
1021 Balch Blvd Stennis Space Center, MS 39529 |
Email Address: | randy.clark@noaa.gov |
Phone: | 228-688-3732 |
Extents
Currentness Reference: | Ground Condition |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -124.397359 | |
---|---|---|
E° Bound: | -116.826846 | |
N° Bound: | 40.475111 | |
S° Bound: | 32.520358 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
---|---|
Start: | 1989 |
End: | 2002 |
Spatial Information
Spatial Representation
Representations Used
Vector: | Yes |
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Vector Representation 1
Complex Object Present?: | Yes |
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Complex Object Count: | 269271 |
Access Information
Security Class: | Unclassified |
---|---|
Data Access Constraints: |
None |
Data Use Constraints: |
None |
Distribution Information
Distribution 1
Download URL: | http://coastalscience.noaa.gov/datasets/ccma/biogeo/cinms/Chap_2_Data/kelp_ca.zip |
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Distributor: | |
Description: |
Downloadable Data |
File Type (Deprecated): | ESRI Shape File |
Distribution Format: | Shapefile |
File Size: | 81 |
Compression: | Uncompressed |
URLs
URL 1
URL: | http://coastalscience.noaa.gov/datasets/ccma/biogeo/cinms/Chap_2_Data/kelp_ca.zip |
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URL Type: |
Online Resource
|
URL 2
URL: | http://ccma.nos.noaa.gov/products/biogeography/cinms/data/ |
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URL Type: |
Online Resource
|
URL 3
URL: | http://ccma.nos.noaa.gov/ecosystems/sanctuaries/chanisl_nms/ |
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URL Type: |
Online Resource
|
Activity Log
Activity Log 1
Activity Date/Time: | 2014-09-03 |
---|---|
Description: |
Date that the source FGDC record was last modified. |
Activity Log 2
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
Activity Date/Time: | 2017-09-13 |
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Description: |
Partial upload of Spatial Info section only. |
Activity Log 4
Activity Date/Time: | 2017-11-01 |
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Description: |
Replaced entire Lineage section to populate new Source Contribution field. |
Activity Log 5
Activity Date/Time: | 2018-02-08 |
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Description: |
Partial upload of Positional Accuracy fields only. |
Technical Environment
Description: |
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535 |
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Data Quality
Accuracy: |
Final habitat codes were reviewed for conformance to the list of all potential species codes. The absolute accuracy of species identification is dependent upon the source data and was not validated for this multi-year data compilation. |
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Horizontal Positional Accuracy: |
Horizontal accuracy was not assessed, so the positional accuracy is unknown. |
Completeness Report: |
Data are generally comprehensive for the marine nearshore area off the California Coast of the United States. West Coast estuaries (including San Francisco Bay and smaller coastal estuaries) are not included. The 1989 kelp survey in California was comprehensive, but the surveys in 1999 and 2002 did not cover the entire coastline. |
Conceptual Consistency: |
Kelp bed distribution and abundance are highly variable between years. Therefore, kelp bed locations and extent in a particular year may not reflect current or past conditions. The use of various techniques means that the delineation of a kelp bed is not necessarily consistent over time. These variations include: the level of generalization of kelp bed boundaries, the inclusion or omission of water polygons entirely contained within a kelp polygon, and the minimum kelp bed detected and delineated (i.e., minimum mapping unit). In addition, surveys were not comprehensive for all years mapped. |
Lineage
Sources
California Coastal Kelp Resources Survey, 1989, 1999, 2002
Contact Name: | California Department of Fish and Game, Marine Region GIS Lab |
---|---|
Publish Date: | 2002-01-01 |
Extent Type: | Discrete |
Extent Start Date/Time: | 1989 |
Citation URL: | http://www.dfg.ca.gov/ |
Source Contribution: |
Provide delineation of kelp polygons for areas off California. | Source Geospatial Form: vector digital data | Type of Source Media: digital files provided by ftp |
Process Steps
Process Step 1
Description: |
California Kelp Data Processing:1989 and 2002 data were provided as a single shape file for each year. Processing of these two shape files included conversion to ArcInfo coverage format, projecting to West Coast Albers projection, dropping extraneous items, and adding an item for species code. Species code for all polygons was set to unspecified because species was not identified in California kelp surveys. (Macrocystis pyrifera is the predominant species, but there is some Nereocystis as well).1999 coastwide data were provided as 72 separate shape files. Processing for each shape file included, conversion to ArcInfo coverage format, projecting to West Coast Albers projection, dropping extraneous items, adding species code and setting it to unspecified or none (based on source file grid-code attribute), and dissolving all polygons on species code.After individual year processing, all three annual coverages were combined into one multi-year coverage using ArcInfo UNION command. Added item for data source and set it to 'CDFG'. |
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Process Date/Time: | 2003-01-01 00:00:00 |
Source: | California Coastal Kelp Resources Survey, 1989, 1999, 2002 |
Child Items
Rubric scores updated every 15m
Type | Title | |
---|---|---|
Entity | kelp_ca |
Catalog Details
Catalog Item ID: | 39359 |
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GUID: | gov.noaa.nmfs.inport:39359 |
Metadata Record Created By: | Tyler Christensen |
Metadata Record Created: | 2017-04-05 12:52+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2023-10-17 16:12+0000 |
Metadata Record Published: | 2018-07-12 |
Owner Org: | NCCOS |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2018-07-12 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2019-07-12 |