West Coast Canopy-Forming Kelp, 1989-2014

Metadata Updated: February 25, 2021

These data include the general extents of canopy-forming kelp surveys from 1989 to 2014 and a compilation of existing data sets delineating canopy-forming kelp beds along the coasts of Washington, Oregon, and California. Canopy-forming kelp includes species of the genera Nereocystis (bull kelp) and Macrocystis (giant kelp). It does not include the understory kelp genera, such as Laminaria or Alaria. The source data were created from remote-sensing surveys (aerial photos and digital imagery) which often used different survey methods from area to area or year to year. The data depict all kelp observations from all surveys, merged into continuous polygons with the internal boundaries removed (dissolved). This depiction is sometimes referred to as the "maximum extent." Different sections of the coast have been surveyed during different time periods. The number of surveys per section of coast ranges from 1 to 25 surveys. The kelp survey extent data depict the general sections of coastline that were surveyed, how many times they were surveyed, the years of the survey, and which source data were included in the final kelp data compilation.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Date August 22, 2016
Metadata Created Date November 12, 2020
Metadata Updated Date February 25, 2021
Reference Date(s) February 10, 2016 (publication)
Frequency Of Update unknown

Metadata Source

Harvested from DOI Open Data

Additional Metadata

Resource Type Dataset
Metadata Date August 22, 2016
Metadata Created Date November 12, 2020
Metadata Updated Date February 25, 2021
Reference Date(s) February 10, 2016 (publication)
Responsible Party Bureau of Ocean Energy Management (Point of Contact)
Contact Email
Access Constraints Use Constraints: None. Please check sources, scale, accuracy, currency and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgement of the West Coast Ocean Data Portal would be appreciated., Access Constraints: None
Bbox East Long -117.123850
Bbox North Lat 48.426418
Bbox South Lat 32.530783
Bbox West Long -124.844003
Coupled Resource
Frequency Of Update unknown
Licence 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 also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data to evaluate data set limitations, restrictions or intended use. The West Coast Ocean Data Network shall not be held liable for improper or incorrect use of the data described and/or contained herein.
Metadata Language
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-124.844003, 32.530783], [-117.12385, 32.530783], [-117.12385, 48.426418], [-124.844003, 48.426418], [-124.844003, 32.530783]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1989-08-01
Temporal Extent End 2014-09-30

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