Invertebrate diversity in southern California

This shapefile displays mean invertebrate diversity within 5 minute grid cells. The Shannon Index of diversity was calculated from Southern California Coastal Water Research Project (SCCWRP) invertebrate trawl data. Data from 426 fisheries independent trawls ranging from 2-215 meters depth were collected during the months of June-August. The data set contained information for 288 invertebrate species in 426 trawls. Using ArcGIS, 5 x 5 minute grids were created and mean diversity was calculated for each grid cell containing data. Gear included a 7.6-m head-rope semi balloon otter trawl with 1.25 cm codend mesh trawled for 5-10 minutes at each station. For more information on trawl methods, see Allen et al. (1997), and Allen et al. (2003).

Data and Resources

Field Value
accessLevel public
accrualPeriodicity irregular
bureauCode {006:48}
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
identifier Invertebrate diversity in southern California
language {en-US}
modified 2004-07-01
old-spatial {"type": "Polygon", "coordinates": [[[-120.503185, 32.493744], [-117.010474, 32.493744], [-117.010474, 34.500757], [-120.503185, 34.500757], [-120.503185, 32.493744]]]}
programCode {006:055}
publisher NOAA/NOS/NCCOS/CCMA/Biogeography Branch (Point of Contact)
resource-type Dataset
source_datajson_identifier true
source_hash 85fb523d863e9b3100e5f6188fa2a01820e2f165
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-120.503185, 32.493744], [-117.010474, 32.493744], [-117.010474, 34.500757], [-120.503185, 34.500757], [-120.503185, 32.493744]]]}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • benthic
  • california
  • channel-islands-national-marine-sanctuary
  • ckan
  • earth-science-oceans-marine-biology-invertebrates
  • environmental-monitoring
  • geo
  • geographic-information-polygons
  • geoss
  • national
  • north-america
  • southern-california
  • united-states
isopen False
license_id notspecified
license_title License not specified
maintainer Randy Clark
maintainer_email randy.clark@noaa.gov
metadata_created 2025-11-22T09:04:46.000990
metadata_modified 2025-11-22T09:04:46.000994
notes This shapefile displays mean invertebrate diversity within 5 minute grid cells. The Shannon Index of diversity was calculated from Southern California Coastal Water Research Project (SCCWRP) invertebrate trawl data. Data from 426 fisheries independent trawls ranging from 2-215 meters depth were collected during the months of June-August. The data set contained information for 288 invertebrate species in 426 trawls. Using ArcGIS, 5 x 5 minute grids were created and mean diversity was calculated for each grid cell containing data. Gear included a 7.6-m head-rope semi balloon otter trawl with 1.25 cm codend mesh trawled for 5-10 minutes at each station. For more information on trawl methods, see Allen et al. (1997), and Allen et al. (2003).
num_resources 3
num_tags 15
title Invertebrate diversity in southern California