Adult California sheephead (Semicossyphus pulcher) counts at long-term subtidal sites at San Nicolas Island, California (1981-2018)

The data represent total counts of adult California sheephead from six long-term sites at San Nicolas Island, CA between fall 1981 and spring 2018. At each site counts were made by divers swimming five 50-m by 5-m mid-water transects and five 50-m by 2-m benthic transects. The data presented here are the sum of the adult sheephead counted on all transects at a site for each sampling period. The data are from samples made in fall and spring from 1981-2018.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
datagov_dedupe_retained 20220725124225
identifier USGS:61c25b8ed34e2ca389d9e85d
metadata_type geospatial
modified 20220218
old-spatial {"type": "Polygon", "coordinates": [[[-119.60000, 33.20000], [-119.60000, 33.30000], [ -119.40000, 33.30000], [ -119.40000, 33.20000], [-119.60000, 33.20000]]]}
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash fdb99f42ade5523c737c67221905f4d2fdcc1d36
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-119.60000, 33.20000], [-119.60000, 33.30000], [ -119.40000, 33.30000], [ -119.40000, 33.20000], [-119.60000, 33.20000]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • biota
  • california
  • ckan
  • geo
  • geoss
  • kelp-forest
  • marine-fishery-resources
  • national
  • north-america
  • san-nicolas-island
  • southern-california-coastal
  • united-states
  • usgs-61c25b8ed34e2ca389d9e85d
isopen False
license_id notspecified
license_title License not specified
maintainer U.S. Geological Survey, Western Ecological Research Center
maintainer_email gs-b-werc_data_management@usgs.gov
metadata_created 2025-11-22T15:41:41.095988
metadata_modified 2025-11-22T15:41:41.095993
notes The data represent total counts of adult California sheephead from six long-term sites at San Nicolas Island, CA between fall 1981 and spring 2018. At each site counts were made by divers swimming five 50-m by 5-m mid-water transects and five 50-m by 2-m benthic transects. The data presented here are the sum of the adult sheephead counted on all transects at a site for each sampling period. The data are from samples made in fall and spring from 1981-2018.
num_resources 2
num_tags 15
title Adult California sheephead (Semicossyphus pulcher) counts at long-term subtidal sites at San Nicolas Island, California (1981-2018)